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2001 Fiscal Year Final Research Report Summary

Ocean Hemisphere Network : New probes for scanning the Earth's interior

Research Project

Project/Area Number 09NP1101
Research Category

Grant-in-Aid for Creative Basic Research

Allocation TypeSingle-year Grants
Research InstitutionThe University of Tokyo

Principal Investigator

FUKAO Yoshino  University of Tokyo, Earthquake Research Institute, Professor, 地震研究所, 教授 (10022708)

Co-Investigator(Kenkyū-buntansha) HAMANO Yozo  University of Tokyo, Department of Earth and Planetary Science, Professor, 大学院・理学系研究科, 教授 (90011709)
KANAZAWA Toshihiko  University of Tokyo, Earthquake Research Institute, Professor, 地震研究所, 教授 (30114698)
YAMADA Isao  Nagoya University, Department of Earth and Planetary Sciences, Professor, 大学院・理学研究科, 教授 (60022670)
SATO Tadahiro  National Astronomical Observatory, Mizusawa, Associate Professor, 助教授 (10000176)
FUJIMOTO Hiromi  Tohoku University, Research Center for Predition of Earthquakes and Volcanic Eruptions, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (50107455)
歌田 久司  東京大学, 地震研究所, 教授 (70134632)
Project Period (FY) 1996 – 2001
KeywordsEarthquake / Global Observation / Electromagnetism / Geodesy / Structures of the Earth and Planetary Interiors / Plate motion / Long-term seafloor monitoring / The western Pacific
Research Abstract

Towards the end of the OHP project, we have completed the OHP network that consists of the seismic, geo-electromagnetic and geodetic components, which are now in routine operation. The data are available from the OHP center. In particular we have for the first time established three ODP borehole stations of very broadband seismometers under the sea bottom. We have also obtained remarkable achievements from the analyses of data, including, (1) Establishment of the concept of stagnant slab, (2) Discovery of Earth's background free oscillations, (3) Modeling of the Earth's nondipole magnetic field by the coupling of the toroidal magnetic field in the core with the electrically heterogeneous structure of the mantle, (4) 3-D global inversion for the electrical conductivity of the mantle, and (5) Mapping of detailed plate motions in the western Pacific region.

  • Research Products

    (198 results)

All Other

All Publications (198 results)

  • [Publications] Sugioka, H., Y.Fukao, S.Sakai: "Anomalously early first arrivals to the J-array from teleseismic events"J.Phys.Earth. 44. 687-699 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kobayashi, S, Y.Fukao: "Fluid mechanical effects of gravitational differentiation of immiscible two phases -Structure, self-sustainment and non-linearity- (in Japanese with English abstract)"Bull.Volcano.Soc.J., 42, Special Number ゛Magmatology". 42. 281-292 (1997)

    • Description
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  • [Publications] Obayashi, M., Y.Fukao: "P and PcP travel time tomography for the core-mantle boundary"J.Geophys.Res.. 102. 17825-17841 (1997)

    • Description
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  • [Publications] Nawa, K, Y.Fukao, R.Shichi, Y.Murata: "Inversion of gravity data for the terrain density distribution in southwest Japan"J.Geophys.Res.. 102. 27703-27719 (1997)

    • Description
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  • [Publications] Nawa, K, N.Suda, Y.Fukao, T.Sato, Y.Aoyama, K.Shibuya: "Incessant excitation of the Earth's free oscillations"Earth Planets Space. 50. 3-8 (1998)

    • Description
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  • [Publications] Fukao, Y., E.Fujita, S.Hori, K.Kanjo: "Response of a volcanic conduit to step-like change in magma pressure"Geophys.Res.Lett.. 25. 105-108 (1998)

    • Description
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  • [Publications] Suda, N., N.Nawa, Y.Fukao: "Earth's background free oscillations"Science. 279. 2089-2091 (1998)

    • Description
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  • [Publications] Hasegawa, A., S.Horiuchi, Y.Fukao: "Observations and surveys for long-term forecasts"Zisin(Special Issue : Long-term Earthquake Forecasts). 50. 191-199 (1998)

    • Description
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  • [Publications] Nawa, K., N.Suda, Y.Fukao, T.Sato, Y.Aoyama, K.Shibuya: "Incessant excitation of the Earth's free oscillations(Reply)"Earth Planets Space. 50. 887-892 (1998)

    • Description
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  • [Publications] Tajima, F., F.Fukao, M.Obayashi, T.Sakurai: "Evaluation of slab images in the northeastern Pacific"Earth Planets Space(OHP special issue). 50. 953-964 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kumagai, H., Y.Fukao, S.Watanabe, Y.Baba: "A self-organized model of earthquakes with constant stress drops and the b-value of 1"Geophys.Res.Lett.. 26. 2817-2820 (1999)

    • Description
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  • [Publications] Fukao, Y., M.Kono, A.Yamamoto, M.Saito, K.Nawa, A., Giesecke, C.Perales: "Gravity measurements, data reduction, and Bouguer anomaly map of Peru"Bull.Earthq.Res.Inst. 74. 161-266 (1999)

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      「研究成果報告書概要(和文)」より
  • [Publications] Fujita, E., Y.Fukao, K.Kanjo: "Strain offsets with monotonous damped oscillations during the 1986 Izu-Oshima Volcano eruption"J.Geophys.Res.. 105. 443-462 (2000)

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      「研究成果報告書概要(和文)」より
  • [Publications] Kunugi, T., Y.Fukao, M.Ohno: "Underdamped responses of a well to nearby swarm earthquakes"J.Geophys.Res.. 105. 7805-7818 (2000)

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      「研究成果報告書概要(和文)」より
  • [Publications] Nishida, K., N.Kobayashi, Y.Fukao: "Resonant oscillations between the solid Earth and the atmosphere"Science. 287. 2244-2246 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Nawa, K., N.Suda, Y.Fukao, T.Sato, Y.Tamura, K.Shibuya, H.McQueen, H.Virtanen, J.Kaariainen: "Incessant excitation of the Earth's free oscillations : global comparison of superconducting gravimeter records"Phys.Earth Planet.Inter. 120. 289-297 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Widiyantoro, S., A.Gorvatov, B.L.N.Kennet, Y.Fukao: "Improving global shear-wave travel-time tomography using three dimensional ray tracing and iterative inversion"Geophys.J.Int.. 141. 747-758 (2000)

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  • [Publications] A.Gorbatov, S.Widiyantoro, Y.Fukao, E.Gordeev: "Signature of remnant slabs in the North Pacific from P-wave tomography"Geophys.J.Int.. 142. 27-36 (2000)

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  • [Publications] Sugioka, H., Y.Fukao, T.Kanazawa, K.Kanjo: "Volcanic events associated with an enigmatic submarine earthquake"Geophys.J.Int.. 142. 361-370 (2000)

    • Description
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  • [Publications] Nakatani, M, S.Kaneshima, Y.Fukao: "Size-dependent microearthquake initiation inferred from high-gain and low-noise observations at Nikko district, Japan"J.Geophys.Res.. 105. 28095-28109 (2000)

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  • [Publications] Sugioka, H., Y.Fukao, T.Okamoto, K.Kanjo: "Detection of shallowest submarine seismicity by acoustic-coupled-shear waves"J.Geophys.Res.. 106. 13485-13499 (2001)

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      「研究成果報告書概要(和文)」より
  • [Publications] Fukao, Y., S.Widiyantoro, M.Obayashi: "Stagnant slabs in the upper and lower mantle transition region"Rev.Geophys.. 39. 291-323 (2001)

    • Description
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  • [Publications] Fukao, Y., K.Nishida, N.Suda, K.Nawa, N.Kobayashi: "A theory of the Earth's background free oscillations"J.Geophys.Res.. (in press). (2001)

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  • [Publications] Gorvatov, A., Y.Fukao, S.Widiyantoro, E.Gordeev: "Seismic evidence for a mantle plume oceanward of the Kamchatka-Aleutian trench junction"Geophys.J.In.. 146. 282-288 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Gorvatov, A., Y.Fukao, S.Widiyantoro: "Application of a three-dimensional ray-tracing techique to global P, PP and Pdiff travel time tomography"Geophys.J.Int.. (in press). (2001)

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  • [Publications] Nishida, K., N.Kobayashi, Y.Fukao: "Origin of Earth's ground noise at 0.2-2 mHz"Geophys.Res.Lett.. (in press). (2001)

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  • [Publications] Takeuchi, N., S.Watada, S.Tsuboi, Y.Fukao, M.Kabayashi, Y.Matsuzaki, T.Nakamura: "Application of distributed object technology to seismic waveform distribution"Seism.Res.Lett.. (in press). (2001)

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      「研究成果報告書概要(和文)」より
  • [Publications] Iidaka, T., Niu, F: "Mantle and crust anisotropy in the eastern China region as inferred from waveform splitting of SKS and PpSms"Earth, Planets and Space. 53. 159-168 (2001)

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  • [Publications] Iidaka, T., F.Niu: "Seismic anisotropy beneath the Lau back-arc basin inferred from sScS-ScS splitting data"Geophys.Res.Lett.. 28. 863-866 (2001)

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  • [Publications] Iidaka, T., Niu, F: "Evidence for an anisotropic lower mantle beneath the eastern Asia : Comparison of shear-wave splitting data of SKS and P660s"Geophys.Res.Lett.. 25. 675-678 (1998)

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  • [Publications] Iidaka, T., K.Obara: "Seismological evidence for the existence of anisotropic zone in the metastable wedge inside the subducting Izu-Bonin slab"Geophys.Res.Lett.. 24. 3305-3308 (1997)

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  • [Publications] Kawakatsu, H.: "On the observability of the isotropic component of a moment tensor"Geophys.J.Int.. 126. 525-544 (1996)

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      「研究成果報告書概要(和文)」より
  • [Publications] Hara, T., K.Kuge, H.Kawakatsu: "Determination of the isotropic component of deep focus earthquakes by inversion of normal mode data"Geophys.J.Int.. 127. 515-528 (1996)

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  • [Publications] Niu, F., H.Kawakatsu: "Complex structure of the mantle discontinuities at the tip of the subducting slab beneath the northeast China : a preliminary investigation of broadband receiver functions"J.Phys.Earth. 44. 701-711 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Niu, F., H.Kawakatsu: "Depth variation of the mid-mantle seismic discontinuity"Geophys.Res.Lett.. 24. 429-432 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Niu, F., H.Kawakatsu: "Determination of the absolute depths of the mantle transition zone discontinuities beneath China : Effect of the stagnant slabs on the mantle transition zone discontinuities"Earth, Planets, and Space(OHP sepcial issue). 50. 965-975 (1998)

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  • [Publications] Vinnik, L., F.Niu, H.Kawakatsu: "Broad-band converted phases from midmantle discontinuities"Earth, Planets, and Space(OHP sepcial issue). 50. 987-997 (1998)

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  • [Publications] Kato, M, M.Misawa, H.Kawakatsu: "Small Subsidence of the 660-km Discontinuity Beneath Japan Probed By ScS Reverberations"Geophys.Res.Lett.. 28. 447-450 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kato, M, H.Kawakatsu: "Seismological in situ Estimation of Density Jumps across the Transition Zone Discontinuities beneath Japan"Geophys.Res.Lett.. 28. 2541-2544 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Vinnik, L., M.Kato, H.Kawakatsu: "Search for seismic discontinuities in the lower mantle"Geophys.J.International. 147. 41-56 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.Zhang, K.Kuge, T.Lay, S.Tsuboi: "Determination of earthquake source mechanisms using teleseismic 30-140 s waves"The January 17, 1994, Northridge earthquake, Journal of Geophysical Research. 102. 8159-8169 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.Kobayashi, I.Nakanishi, S.Tsuboi: "Polarization anomalies of surface waves recorded by a broadband seismometer network in Hokkaido"Japan Journal of Physics of the Earth, No.6. 45. 205-220 (1999)

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  • [Publications] S.Tsuboi, P.M.Whitmore, T.J.Sokolowski: "Application of Mwp to deep and teleseismic earthquakes"Bulletin of the Seismological Society of America. 89. 1345-1351 (1999)

    • Description
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  • [Publications] S.Tsuboi, M.Kikuchi, Y.Yamanaka, M.Kanao: "The March 25, 1998 Antarctic earthquake : Great earthquake caused by postglacial rebound"Earth Planets Space. 52. 133-136 (2000)

    • Description
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  • [Publications] S.Tsuboi: "Application of Mwp to tsunami earthquake"Geophysical Research Letters. 27. 3105-310 (2000)

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  • [Publications] S.Tsuboi, M.Saito, Y.Ishihara: "Verification of horizontal-to-vertical spectral ratio technique for estimation of site response using borehole seismographs"Bulletin of the Seismological Society of America. 91. 499-510 (2001)

    • Description
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  • [Publications] S.Tsuboi, M.Saito: "Existence of finite rigidity layer at the base of the Earth's liquid outer core inferred from anomalous splitting of normal modes"Earth Planets Space. (in press). (2002)

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  • [Publications] Takeuchi, N., R.Geller, P.R.Cummins: "Highly accurate P-SV complete synthetic seismograms using modified DSM operators"Geophys.Res.Lett.. 23. 1175-1178 (1996)

    • Description
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  • [Publications] Cummins, P.R., N.Takeuchi, R.J.Geller: "Computation of complete synthetic seismograms for laterally heterogeneous models using the Direct Solution Method"Geophys.J.Int.. 130. 309-312 (1997)

    • Description
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  • [Publications] Geller, R.J., N.Takeuchi: "Optimally accurate second order time domain finite difference scheme for the elastic equation of motion ; 1-D case"Gerphys.J.Int.. 135. 48-62 (1998)

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  • [Publications] Igel, H., R.J.Geller: "Numerical modelling of global seismic wave propagation : algorithms---accuracy---verification(Editorial)"Phys Earth Planet Int.. 119. 1-2 (2000)

    • Description
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  • [Publications] Takeuchi, N., R.J.Geller, P.R.Cummins: "Complete synthetic seismograms for 3-D heterogeneous Earth models computed using modifed DSM operators and their applicability to inversion for Earth structure"Phys Earth Planet.. 119. 25-36 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takeuchi, N., R.J.Geller: "Optimally accurate second order time-domain finite difference scheme for computing synthetic seismograms in 2-D and 3-D media"Phys Earth Planet.. 119. 99-131 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mizutani, H., R.J.Geller, N.Takeuchi: "Comparison of accuracy and efficiency of time-domain schemes for calculating synthetic seismograms"Phys Earth Planet.. 119. 75-79 (2000)

    • Description
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  • [Publications] Igel, H., N.Takeuchi, R.J.Geller, C.Megnin, H.-P.Bunge, J.Dalkolmo, B.Romanowicz: "The COSY Project : verification of global seismic modeling algorithms"Phys Earth Planet Int.. 199. 3-23 (2000)

    • Description
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  • [Publications] Hara, T., R.J.Geller: "Simultaneous waveform inversion for 3-D Earth structure and earthquake source parameters considering a wide range of modal coupling"Geophys.J.Int.. 142. 539-550 (2000)

    • Description
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  • [Publications] Tono, Y., K.Yomogida: "Short-period Pdiff scattering for the 1994 great Bolivian deep earthquake"Phys.Earth Planet.Inter.. 103. 1-16 (1997)

    • Description
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  • [Publications] Y.Fukao, Y.Morita, M.Shiobara, T.Kanazawa, H.Utada, H.Toh, T.Kato, T.Sato, H.Shiobara, N.Seama, H.Fujimoto, N.Takeuchi: "The Ocean Hemisphere Network Preject(OHP)"Workshop Report of OHP/ION Joint Symposium, ゛Long-Term Observations in the Oceans, "Yamanashi, Jan.. 13-29 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.Takeuchi, M.Kobayashi, R.J.Geller: "Whole mantle S wave structure obtained by preliminary broadband waveform inversion using the Direct Solution Method"OHP/ION Joint Symposium on ゛Long-Term Observations in the Oceans, "Yamanashi, Jan.. 194-195 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.Takeuchi, S.Watada, Y.Fukao, S.Tsuboi: "OHP data center"OHP/ION Joint Symposium on ゛Long-Term Observations in the Oceans", Yamanashi, Jan.2001. 11-12 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Mizutani, R.J.Geller, N.Takeuchi: "Derivation of optimally accurate operators for computation of synthetic seismograms for a medium with internode discontinuities"OHP/ION Joint Symposium on ゛Long-Term Observations in the Oceans, "Yamanashi, Jan.2001. 209 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.Takeuchi, P.R.Cummins, R.J.Geller: "Computation of synthetic seismograms for 3-D heterogeneous Earth models using modified DSM operators"Ocean Hemisphere Project(OHP) International Symposium on ゛New Images of the Earth's Interior through Long-term Ocean-floor Observations, " Chiba, Nov.1997. 140-141 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] R.J.Geller, N.Takeuchi, H.Mizutani: "Optimally accurate numerical schemes for computing synthetic seismograms"Ocean Hemisphere Project(OHP) International Symposium on ゛New Images of the Earth's Interior through Long-term Ocean-floor Observations, " Chiba, Nov.1997. 15 (1997)

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      「研究成果報告書概要(和文)」より
  • [Publications] Imanishi, Y., T.Sato, K.Asari: "Measurement of Mechanical Responses of Superconducting Gravimeters"J.Geodetic Soc.Japan. Vol.42. 115-117 (1996)

    • Description
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  • [Publications] Sato, T., Shibuya, K., Nawa, K., Matsumoto, K., Tamura, Y.: "On the Diurnal and Semidiurnal Tidal Factors at Syowa Station, Antarctica"J.Geodetic Soc.Japan. 42. 145-153 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sato, T., Y.Tamura, S.Okubo, S.Yoshida: "Calibration of the Scale Factor of Superconducting Gravimeter at Esashi using an Absolute Gravimeter FG5"J.Geodetic Soc.Japan. 42. 225-232 (1996)

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  • [Publications] Takemoto, S., T.Higashi, A.Mukai, H.Nose, M.Murakami, K.Nitta, H.Yamamoto, K.Onoue, Y.Fukuyama, K.Yamaguchi, K.Matsuo, M.Machida: "Effects of Ground Vibrations on Absolute Gravity Measurement in Kyoto"IAG Symp. : Effects of Ground Vibrations of Absolute Gravity Measurement in Kyoto. 117. 69-74 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kameyama, M., H.Fujimoto, M.Ogawa: "A thermo-chemical regime in the upper mantle in the early Earth inferred from a numerical model of magma-migration in a convecting upper mantle"Phys.Earth Planet.Inter. 94. 187-215 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tomoda, Y., H.Fujimoto: "Deep structure of seamount of younger age inferred from gravity anomaly"Proc.Jpn Acad. 72. 39-43 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Stroev, P.A., H.Fujimoto: "Gravity anomalies in and around the Japan Sea"In : Geology and Geophysics of the Japan Sea, N.Isezaki, I.I.Bersenev, K.Tamaki, B.Ya.Karp, And E.P.Lelikov(eds.), Terra Sci.Pub., Tokyo. 49-59 (1996)

    • Description
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  • [Publications] Fujimoto, H., P.A.Stroev, A.G.Gainanov: "Lithosphere and asthenosphere models from gravity data"Geology and Geophysics of the Japan Sea, N.Isezaki, I.I.Bersenev, K.Tamaki, B.Ya.Karp, And E.P.Lelikov(eds.), Terra Sci.Pub., Tokyo. 407-412 (1996)

    • Description
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  • [Publications] Fujimoto, H., N.Seama, J.Lin, T.Matsumoto, T.Tanaka, K.Fujioka: "Gravity anomalies of the Mid-Atlantic Ridge north of the Kane Fracture Zone"Geophys.Res.Lett. 23. 3431-3433 (1996)

    • Description
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  • [Publications] Fujimoto, H., M.Ito: "Upper mantle structure beneath the Japan Trench and Tohoku Arc viewed from mantle Bouguer anomalies"Proc.Jpn Acad. 72. 57-61 (1996)

    • Description
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  • [Publications] Sumita, I., Yoshida, S., Kumazawa, M., Hamano, Y: "A model for sedimentary compaction of a viscous medium and its application to inner core growth"Geophys.J.Int. 124. 502-524 (1996)

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  • [Publications] Furuya, M, Hamano, Y., Naito, I.: "Quasi-peiodic wind signal as a possible excitation of Chandler wobble"J.Geophys.Res. 101. 25537-25546 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Utada, H., Hamano, Y., Segawa, J.: "Conductivity anomaly around the Japanese Islands, in Geology and Geophysics of the Japan Sea"Japan-USSR Monograph series, ed.N.Isezaki et al, Terra Sci.Pub. 103-149 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hayakawa, M., R.Kawate, O.A.Molchanov, K.Yumoto: "Results of ultra-low-frequency magnetic field measurements during the Guam earthquake of 8 August 1993"Geophys.Res.Lett.. 23. 241-244 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Osaki, H., K.Yumoto, K.Fukao, K.Shiokawa, F.W.Menk, B.J.Fraser, the 210°MM Magnetic Observation Group: "Characteristics of low-latitude Pi 2 pulsations along the 210°magnetic meridian"J.Geomag.Geoelectr. 48. 1421-1430 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Petrinec, S.M., K.Yumoto, H.Luhr, D.Orr, D.Miling, K.Hayashi, S.Kokubun, T.Araki: "The CME event of February 21, 1994 ; Response of the magnetic field at the Earth's surface"J.Geomag.Geoelectr. 48. 1341-1380 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shiokawa, K., K.Yumoto, Y.Tanaka, H.Osaki, M.Sato, T.Kato, Y.Kato, M.Sera, Y.Ikegami, S.-I.Akasofu, K.Hayashi, T.Oguti, Y.Kiyama: "Auroral observations using automatic optical instruments : Relations with multiple Pi 2 magnetic pulsations"J.Geomag.Geoelectr.. 48. 1407-1420 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yumoto, K., the 210°MM Magnetic Observation Group: "The STEP 210°magnetic meridian network project"J.Geomag.Geoelectr.. 48. 1297-1309 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Araki, T., S.Fujitani, M., Emoto, K.Yumoto, K.Shiokawa, T.Ichinose, H.Luhr, D.Orr, D.K.Milling, H.Singer, G.Rostoker, S.Tsunomura, Y.Yamada, C.F.Liu: "Anomalous sudden commencement on March 24, 1991"J.Geophys.Res. 102. 14075-14086 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Baishev, D.G., K.Yumoto, S.I.Solovyev, N.E.Molochushkin, E.S.Barkova: "Variations of magnetic field in an appearance period of large-scale diffuse luminosity waves in the evening sector during magnetic storm"Geomag.and Aeronomy. 37. 39-46 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Matsuoka, H., K.Takahashi, S.Kokubun, K.Yumoto, T.Yamamoto, S.I.Solovyev, E.F.Vershinin: "Phase and amplitude structure of Pc 3 magnetic pulsations as determined from multipoint observations"J.Geophys.Res. 10. 2391-2404 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Pilipenko, V., K.Yumoto, E.Fedorov, N.Yagova, S.Solovyev, E.Vershinin: "Variations of the Pc 3 spectral content along the 210°magnetic"Geomagnetic & Aeronomy. 37. 66-74 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shinohara, K., K.Yumoto, A.Yoshikawa, O.Saka, S.I.Solovyev, E.F.Vershinin, N.B.Trivedi, J.M.Da Costa: "Wave characteristics of daytime and nighttime Pi 2 pulsations at the equatorial and low latitudes"Geophys.Res.Lett. 24. 2279-2282 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kameyama, M., D.A.Yuen, H.Fujimoto: "The interaction of viscous heating with grain-size dependent rheology in the formation of localized slip zones"Geophys.Res.Lett. 24. 2523-2526 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mochizuki, E., Yokoyama, Y., Shimizu, I., Hamano, Y: "Spherical harmonic analysis in terms of unevenly distributed observation points and its applications to geomagnetic data"J.Geomag.Geoelectr. 49. 1013-1033 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Furuya, M., Hamano, Y., Naito, I.: "Importance of wind for the excitation of Chandler wobble as inferred from wobble domain analysis"J.Phys.Earth. 45. 177-188 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Okubo, S., S.Yoshida, T.Sato, Y.Tamura, Y.Imanishi: "Verifying the precision of a new generation absolute gravimeter FG5-Comparison with superconducting gravimeters and detection of oceanic loading tide"Geophys.Research Letters. 24. 489-492 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Fukuda, Y., Sato, T: "Gravity effects on sea level variation at the super-conducting gravimeter site, estimated from ERS-1 and TOPEX/POSEIDON altimeter data"IAG Sympo. 117. 107-114 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hideo, H., Tamura, Y., Sato, T: "Absolute gravimetric constraint on ocean tide model"J.Geodetic Soc.Japan. 43. 67-77 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sato, T., K.Nawa, K.Shibya, Y.Tamura, M.Ooe, K.Kaminuma, Y.Aoyama: "Polar motion effect on gravity observed with a superconducting gravimeter at Syowa Station, Antarctica"IAG Sympo. 117. 99-106 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sato, T., M.Ooe, K.Nawa, K.Shibya, Y.Tamura, K.Kaminuma: "Long-period tides observed with a superconducting gravimeter at Syowa Station, Antarctica, and their implication to global ocean tide modeling"Phys.Earth Planetary Interiors. 103. 39-53 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Palshin, N.A., L.L.Vanyan, V.A.Kuznetsov, R.D.Medzhitov, V.M.Nikiforov, H.Utada, H.Shimizu: "Voltage Measurements with the Cable Crossing the Sea of Japan from Nakhodka to Naoetsu"Acta Oceanographica Taiwanica. 36. 11-24 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shimoizumi, M., T.Mogi, M.Nakada, T.Yukutake, S.Handa, Y.Tanaka, H.Utada: "Electrical conductivity anomalies beneath the western sea of Kyushu, Japan"Geophys.Res.Lett. 24. 1551-1554 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Shimizu, David E.Loper: "Time and length scales of buoyancy-driven flow structures in a rotating hydromagnetic fluid"Phys.Earth Planet.Inter. 104. 307-329 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Geli, L., Bougault, H., Aslanian, D., Briais, A., Dosso, L., Etoubleau, J., Le Formal, J-P., Maia, M., Ondreas, H., Olivet, J-L., Richardson, C., Sayanagi, K., Seama, N., Shah, A., Vlastelic, I., Yamamoto, M.: "Evolution of the Pacific-Antarctic ridge south of the Udintsev Fracturezone"Science. 278. 1281-1284 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Utada, H., T.Yoshino, T.Okubo, T.Yukutake: "Seismic resistivity changes observed at Aburatsubo, central Japan, revisited"Tectonophysics. 299. 317-331 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Sugioka, H., Y. Fukao and S. Sakai: "Anoinaiously early first arrivals to the J-arrayc from telcscismic events"J. Phys. Earth. 44. 687-699 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kobayashi, S. and Y. Fukao: "Fluid mechanical effects of gravitational differentiation of immsiscible two phases -Structure, self-sustainment and non-linearity- (in Japanese with English abstract), Bull."Volcano. Soc. J.. 42, Special Number "Magmatology". s281-s292 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Obayashi, M. and Y. Fukao: "P and PcP travel time tomography for the core-mantle boundary"J. Geophys. Res.. 102. 17825-17841 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nawa, K., Y. Fukao, R. Shichi and Y. Murata: "Inversion of gravity data for the terrain density distribution in southwest Japan"J. Geophys. Res.. 102. 27703-27719 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nawa, K., N. Suda, Y. Fukao, T. Sato, Y. Aoyama and K. Shibuya: "Incessant excitation of the Earth's free oscillations"Earth Planets Space. 50. 3-8 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fukao, Y., E. Fujita, S. Hori and K. Kanjo: "Response of a volcanic conduct to step-like change in magma pressure"Geophys. Res. Lett.. 25. 105-108 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Suda, N., N. Nawa and Y. Fukao: "Earth's background free oscillations"Science. 279. 2089-2091 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hasegawa, A., S. Horiuchi and Y. Fukao: "Observations and surveys for long-term forecasts"Zisin (Special Issue : Long-term Earthquake Forecasts). 50. 191-199 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nawa, K., N. Suda, Y. Fukao, T. Sato, Y. Aoyama and K. Shibuya: "Incessant excitation of the Earth's free oscillations (Reply)"Earth Planets Space. 50. 887-892 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tajima, F., F. Fukao, M. Obayashi and T. Sakurai: "Evaluation of slab images in the northeastern Pacific"Earth Planets space (OHP special issue). 50. 953-964 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kumagai, H., Y. Fukao, S. Watanabe and Y. Baba: "A self-organized model of earthquakes with constant stress drops and the b-value of 1"Geophys. Res. Lett.. 26. 2817-2820 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fukao, Y., M. Kono, A. Yamamoto, M. Saito, K. Nawa, A. Giesecke and C. Perales: "Gravity measurements, data reduction, and Bouguer anomaly map of Peru"Bull. Earthq. Res. Inst.. 74. 161-266 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujita, E., Y. Fukao and K. Kanjo: "Strain offsets with monotonous damped oscillations during the 1986 Izu-Oshima Volcano eruption"J. Geophys. Res.. 105. 443-462 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kunugi, T., Y. Fukao and M. Ohno: "Underdamped responses of a well to nearby swarm earthquakes"J. Geophys. Res.. 105. 7805-7818 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nishida, K., N. Kobayashi and Y. Fukao: "Resonant oscillations between the solid Earth and the atmosphere"Science. 287. 2244-2246 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nawa, K., N. Suda, Y. Fukao, T. Sato, Y. Tamura, K. Shibuya, H. McQueen, H. Virtanen and J. Kaariainen: "Incessant excitation of the Earth's free oscillations : global comparison of superconducting gravimeter records"Phys. Earth Planet. Inter.. 120. 289-297 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Widiyantoro, S., A. Gorvatov, B.L.N. Kannet and Y. Fukao: "Improving global shear-wave travel-time tomography using three dimensional ray tracing and iterative inversion"Geophys. J. Int.. 141. 747-758 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A. Gorbatov, S. Widiyantoro, Y. Fukao, and E. Gordeev: "Signature of remnant slabs in the North Pacific from P-wave tomography"Geophys. J. Int.. 142. 27-36 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sugioka, H., Y. Fukao, T. Kanazawa and K. Kanjo: "Volcanic events associated with an enigmatic submarine earthquake"Geophys. J. Int.. 142. 361-370 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nakatani, M., S. Kaneshima and Y. Fukao: "Size-dependent microearthquake initiaton inferred from high-gain and low-noise observations at Nikko district, Japan"J. Geophys. Res.. 105. 28095-28109 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sugioka, H., Y. Fukao, T. Okamoto and K. Kanjo: "Detection of shallowest submarine seismicity by acoustic-coupled-shear waves"J. Geophys. Res.. 106. 13485-13499 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fukao, Y., S. Widiyantoro and M. Obayashi: "Stagnant slabs in the upper and lower mantle transition region"Rev. Geophys.. 39. 291-323 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fukao, Y., K. Nishida, N. Suda, K. Nawa and N. Kobayashi: "A theory of the Earth's background free oscillations"J. Geophys. Res.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Gorvatov, A., Y. Fukao, S. Widiyantoro and E. Gordeev: "Seismic evidence for a mantle plume oceanward of the Kamchatka-Aleutian trench junction"Geophys. J. In.. 146. 282-288 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Gorvatov, A., Y. Fukao and S. Widiyantoro: "Application of a three-dimensional ray-tracing technique to global P, PP and Pdiff travel time tomography"Geophys. J. Int.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Nishida, K., N. Kobayashi and Y. Fukao: "Origin of Earth's ground noise at 0.2-2 mHz"Geophys. Res. Lett.. (in press), hilighted. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takeuchi, N., S. Watada, S. Tsuboi, Y. Fukao, M. Kobayashi, Y. Matsuzaki and T. Nakamura: "Application of distributed object technology to seismic waveform distribution"Seism. Res. Lett.. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iidaka, T. and Niu, F.: "Mantle and crust anisotropy in the eastern China region as inferred from waveform splitting of SKS and PpSms"Earth, Planets and Space. 53. 159-168 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iidaka, T. and Niu, F.: "Seismic anisotropy beneath the Lau back-arc basiin inferred from sScS-ScS splitting data"Geophys. Res. Lett.. 28. 863-866 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iidaka, T. and F. Niu: "Evidence for an anisotropic lower mantle beneath the eastern Asia : Comparison of shear-wave splitting data of SKS and P660s"Geophys. Res. Lett.. 25. 675-678 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iidaka, T. and K. Obata: "Seismological evidence for the existence of anisotropic zone in the metastable wedge inside the subducting Izu-Bonin slab"Geophys. Res. Lett.. 24. 3305-3308 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kawakatsu, H.: "On the observability of the isotropic component of a moment tensor"Geophys. J. Int.. 126. 525-544 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hara, T., K. Kuge, and H. Kawakatsu: "Determination of the isotropic component of deep focus earthquakes by inversion of normal mode data"Geophys. J. Int.. 127. 515-528 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Niu, F., and H. Kawakatsu: "Complex structure of the mantle discontinuities at the tip of the subducting slab beneath the northeast China : a preliminary investigation of broadband reciever functions"J. Phys. Earth. 44. 701-711 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Niu, F., and H. Kawakatsu: "Depth variation of the mid-mantle seismic discontinuity"Geophys. Res. Lett.. 24. 429-432 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Niu, F., and H. Kawakatsu: "Determination of the absolute depths of the mantle transition zone discontinuities beneath China : Effect of the stagnant slabs on the mantle transition zone discontinuities"Earth, Planets, and Space (OHP sepcial issue). 50. 965-975 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Viniik, L., F. Niu, and H. Kawakatsu: "Broad-band converted phases from midmantle discontinuities"Earth, Planets, and Space (OHP special issue). 50. 987-997 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kato, M., M. Misawa, H. Kawakatsu: "Small Subsidence of the 660-km Discontinuity Beneath Japan Probed By ScS Reverberations"Geophys. Res. Lett.. 28. 447-450 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kato, M., and H. Kawakatsu: "Seismological in situ Estimation of Density Jumps across the Transition Zone Discontinuities beneath Japan"Geophys. Res. Lett.. 28. 2541-2544 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Viniik, L., M. Kato, H. Kawakatsu: "Search for seismic discontinuities in the lower mantle"Geophys. J. International. 147. 41-56 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Zhang, K. Kuge, T. Lay, S. Tsuboi: "Determination of earthquake source mechanisms using teleseismic 30-140 s waves : The January 17, 1994, Northridge earthquake"Journal of Geophysical Research. Vol.102,No.B4. 1859-8169 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R. Kobayashi, I. Nakanishi, S. Tuboi: "Polarization anomalies of surface waves recorded by a broadband seismometer network in Hokkaido"Japan Journal of Physics of the Earth. Vol.45,No.6. 383-396 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Yoshizawa, K. Yomogida, S. Tsuboi: "Resolving power of surface-wave polarization data for higher-order heterogeneities"Geophysical Journal International. Vol.138. 205-220 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Tsuboi, P.M. Whitmore, T.J. Sokolowski: "Application of Mwp to deep and teleseismic earthquakes"Bulletin of the Seismological Society of America. Vol.89,No.5. 1345-1351 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Tsuboi, M. Kikuchi, Y. Yamanaka, M. Kanao: "The March 25, 1998 Antarctic earthquake : Great earthquake caused by postglacial rebound"Earth Planets Space. Vol.52. 133-136 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Tsuboi: "Application of Mwp to tsunami earthquake"Geophysical Research Letters. Vol.27,No.19. 3105-310 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Tsuboi, M. Saito, Y. Ishihara: "Verification of horizontal-to-vertical spectral ratio technique for estimation of site response using borehole seismographs"Bulletin of Seismological Society of America. Vol.91,No.3. 499-510 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Tsuboi, M. Saito: "Existence of finite rigidity layer at the base of the Earth's liquid outer core inferred from anomalous splitting of normal modes"Earth Planets Space. (in press). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takeuchi, N., R. Geller, and P.R. Cummins: "Highly accurate P-SV complete synthetic seismograms using modified DSM operators"Geophys. Res. Lett.. 23. 1175-1178 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Cummins, P.R., N. Takeuchi, and R.J. Geller: "Computation of complete synthetic seismograms for laterally heteogeneous models using the Direct Solution Method"Geophys. J. Int.. 130. 1, 309-16, 312 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Geller, R.J., and N. Takeuchi: "Optimally accurate second order time domain finite difference scheme for the elastic equation of motion : 1-D case"Geophys. J. Int.. 135. 48-62 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Igel, H., and R.J. Geller: "Numerical modelling of global seismic wave propagation : algorithms - accuracy - verification (Editorial)"Phys Earth Planet Int.. 119. 1-2 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takeuchi, N., R.J. Geller, and P.R. Cummins: "Complete synthetic seismograms for 3-D heterogeneous Earth models computed using modifed DSM operators and their applicability to inversion for Earth structure"Phys Earth Planet. 119. 25-36 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takeuchi, N., and R.J. Geller: "Optimally accurate second order time-domain finite difference scheme for computing synthetic seismograms in 2-D and 3-D media"Phys Earth Planet. 119. 99-131 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mizutani, H., R.J. Geller, and N. Takeuchi: "Comparison of accuracy and efficiency of time-domain schemes for calculating synthetic seismograms"Phys Earth Planet. 119. 75-97 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Igel, H., N. Takeuchi, R.J. Geller, C. Megnin, H.-P. Bunge, J. Dalkolmo, and B. Romanowicz: "The COSY Project : verification of global seismic modeling algorithms"Phys Earth Planet Int.. 199. 3-23 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hara, T., and R.J. Geller: "Simultaneous waveform inversion for 3-D Earth structure and earthquake source parameters considering a wide range of modal coupling"Geophys. J. Int.. 142. 539-550 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Fukao, Y. Morita, M. Shiobara, T. Kanazawa, H. Utada, H. Toh, T. Kato, T. Sato, H. Shiobara, N. Seama, H. Fujimoto, and N. Takeuchi: "The Ocean Hemisphere Network Project (OHP)"Workshop Report of OHP/ION Joint Symposium, "Long-Term Observations in the Oceans," Yamanashi, Jan.. 13-29 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Takeuchi, M. Kobayashi, and R.J. Geller: "Whole mantle S wave structure obtained by preliminary broadband waveform inversion using the Direct Solution Method"OHP/ION Joint Symposium on "Long-Term Observations in the Oceans," Yamanashi, Jan.. 194-195 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Takeuchi, S. Watada, Y. Fukao, and S. Tsuboi: "HOP data center"OHP/ION Joiint Symposium on "Long-Term Observations in the Oceans," Yamanashi, Jan.. 11-12 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Mizutani, R.J. Galler, and N. Takeuchi: "Derivation of optimally accurate operatos for computation of synthetic seismograms for a medium with internode discontinuities"OHP/ION Joint Symposium on "Long-Term Observations in the Oceans," Yamanashi, Jan.. 209 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Takeuchi, P.R. Cummins, and R.J. Geller: "Computation of synthetic seismograms for 3-D heterogeneous Earth models using modified DSM operators"Ocean Hemisphere Project (OHP) International Symposium on "New Images of the Earth's Interior through Long-term Ocean-floor Observations," Chiba, Nov.. 140-141 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] R.J. Geller, N. Takeuchi, and H. Mizutani: "Optimally accujrate numerical schemes for computing synthetic seismograms"Ocean Hemisphere Project (OHP) International Symposium on "New Images of the Earth's Interior through Long-term Ocean -floor Observations," Chiba, Nov.. 15 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tono, Y., and K. Yomogida: "Short-period Pdiff scattering for the 1994 great Bolivian deep earthquake"Phys. Earth Planet. Inter.. 103. 1-16 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Imanishi, Y., T. Sato and K. Asari: "Measurement of Mechanical Responses of Superconducting Gravimeters"J. Geodetic Soc. Japan. Vol.42,No.2. 115-117 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sato, T., Shibuya, K., Nawa, K., Matsumoto, K. and Tamura, Y.: "On the Diurnal and Semidiurnal Tidal Factors at Syowa Station, Antarctica"J. Geodetic Soc. Japan. 42,No.3. 145-153 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sato, T., Y. Tamura, S. Okubo and S. Yoshida: "Calibration of the Scale Factor of Superconducting Gravimeter at Esashi using an Absolute Gravi-meter FG5"J. Geodetic Soc. Japan. 42,No.4. 225-232 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takemoto, S., T. Higashi, A. Mukai, H. Hose, M. Murakami, K. Nitta, H. Yamamoto, K. Onoue, Y. Fukuyama, K. Yamaguchi, K. Matsuo and M. Machida: "Effects of Ground Vibrations on Absolute Gravity Measurement in Kyoto"IAG symposia, 117 Effects of Ground Vibrations on Absolute Gravity Measurement in Kyhoto. 69-74 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kameyama, M., H. Fujimoto, and M. Ogawa: "A themo-chemical regime in the upper mantle in the early Earth inferred from a numerical model of magma-migration in a convecting upper mantle"Phys. Earth Planet. Inter. 94. 187-215 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tomoda, Y., and H. Fujimoto: "Deep structure of seamount of younger age inferred from gravity anomaly"Proc. Jpn. Acad.. 72,Ser.B., No.3. 39-43 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Stroev, P.A., and H. Fujimoto: "Gravity anomalies in and around the Japan Sea, In : Geology and Geophysics of the Japan Sea"N. Isezaki, I. I. Bersenev, K. Tamaki, B. Ya. Karp, and E.P. Lelikov (eds.), Terra Sci. Pub., Tokyo. 49-59 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujimoto, H., P.A. Stroev, and A.G. Gainanov: "Lithosphere and asthenosphere models from gravity data"In : Geology and Geophysics of the Japan Sea, N. Isezaki, I.I. Bersenev, K. Tamaki, B. Ya. Karp, and E.P. Lelikov (eds.), Terra Sci. Pub., Tokyo. 407-412 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujimoto, H., N. Seama, J. Lin, T. Matsumoto, T. Tanaka, and K. Fujioka: "Gravity anomalies of the Mid-Atlantic Ridge north of the Kane Fracture Zone"Geophys. Res. Lett.. 23(23). 3431-3433 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujimoto, H., and M. Ito: "Upper mantle structure beneath the Japan Trench and Tohoku Arc viewed from mantle Bouguer anomalies"Proc. Jpn. Acad.. 72,Ser.B., No.4. 57-61 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sumita, I., Yoshida, S., Kumazawa, M., and Hamano, Y.: "A model for sedimentary compactiuon of viscious medium and its application to inner core growth"Geophys. J. Int.. 124. 502-524 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Furuya, M. Hamano, Y. and Naito, I.: "Quasi-peiodic wind signal as a possible excitation of Chandler wobble"J. Geophys. Res.. 101. 25537-25546 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Utada, H., Hamano, Y., and Segawa, J.: "Conductivity anomaly around the Japanese Islands"in Geology and geophysics of the Japan Sea (Japan-USSR Monograph series, et. N. Isezaki et al, Terra Sci. Pub.. 103-149 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hayakawa, M., R. Kawate, O.A. Molchanov, and K. Yumoto: "Results of ultra-low-frequency magnetic fiel,d measurements during the Guam earthquake of 8 August 1993"Geophys. Res. Lett.. 223,No.3. 241-244 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Osaka, H., K. Yumoto, K. Fukao, K. Shiokawa, F.W. Menk, B.J. Fraster, and the 210°NM Magnetic Observation Group: "Characteristics of low-latitude Pi 2 pulsations along the 210°magnetic meridian"J. Geomag. Geoelectr.. 48. 1421-1430 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Petrinec, S.M., K. Yumoto, H. Luhr, D. Orr, D. Miling, K. Hayashi, S. Kokubon, and T. Araki: "The CME event of February 21, 1994 ; Response of the magnetic field at the Earth's surface"J. Geomag. Geoelectrr. 48. 1341-1380 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shiokawa, K., K. Yumoto, Y. Tanaka, H. Osaki, M. Sato, T. Kato, Y. Kato, M. Sera, Y. Ikegami, S.-I. Akasofu, K. Hayashi, T. Oguti, and Y. Kiyama: "Auroral observations using automatic optical instruments : Relations with multiple Pi2 magnetic pulsations"J. Geocelect. 48. 1407-1420 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yumoto, K., and the 210o MM Magnetic Observation Group: "The STEP 210°magnetic merikdian network project"J. Geomag. Geoelectr.. 48. 1297-1309 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Araki, T., S. Fujitani, M. Emoto, K. Yumoto, K. Shiokawa, T. Ichinose, H. Luhr, D. Orr. D.K. Milling, H. Singer, G. Rostoker, S. Tsunomura, Y. Yamada, and C.F. Liu: "Anomalous sudden commencement on March 24, 1991"J. Geophys. Res.. 102,A7. 14075-14086 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Baishev, D.G., K. Yumoto, S.I. Solovyev, N.E. Molochushkin and E.S. Barkova: "Variations of magnetic field in an appearance period of large-scale diffuse luminosity waves in the evening sector during magnetic storm"Geomag And Aeronomy. 37,No.6. 39-46 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mtsuoka, H., K. Takahashi, S. Kokubun, K. Yumoto, T. Yamamoto, S.I. Solovyev, and E.F. Vershinin: "Phase and amplitude structure of Pc 3 magnetic pulsations as determined from multipoint observations"J. Geophys. Res.. 102,A2. 2391-2404 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Pilipenko, V., K. Yumoto, E. Fedorov, N. Yagova, S. Solovyev, E. Vershinin: "Variations of the Pc 3 spectral content along the 210°magnetic"Geomagnetic & Aeronomy. 37,No.1. 66-74 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinohara, K., K. Yumoto, A. Yoshikawa, O. Saka, S.I. Solovyev, E.F. Vershinin, N.B., Trivedi, J.M. Da Costa and the 210°MM Magnetic Observation Group: "Wave characteristics of daytime and nighttime Pi 2 pulsations at the equatorial and low latitudes"Geophys. Res. Lett.. 24,No.18. 2279-2282 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kameyama, M., D.A. Yuen, and H. Fujimoto: "The interaction of viscous heating with grain-size dependent rheology in the formation of localized slip zaones"Geophys. Res. Lett.. 24(20). 2523-2526 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mochizuki, E., Yokoyama, Y., Shimizu, I., and Hamano, Y.: "Spherical harmonic analysis in terms of unevenly distributed observation points and its applications to geomagnetic data"J. Geomag. Geoelectr.. 49. 1013-1033 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Furuya, M., Hamano, Y., and Naito, I.: "Importance of wind for the excitation of Chandler wobble as inferred from wobble domain analysis"J. Phys. Earth. 45. 177-188 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Okubo, S., S. Yoshida, T. Saito, Y. Tamura and Y. Imanishi: "Verifying thte precision of a new generation absolute gravimeter FG5 - Comparfison with superconducting gravimeters and detection of oceanic loading tide, Geophys."Research Letters. Vol.24,No.4. 489-492 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fukuda, Y. and Sato, T.: "Gravity effects on sea level variation at the super-conducting gravimeter site, estimated from ERS-1 and TOPEX/POSSSEIDON alti-meter data"IAG Sympo.. Vol.117, ed. Segawa et al.. 107-114 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideo, H., Tamura, Y., and Sato, T.: "Absolute gravimetric constraint on ocean tide model"J. Geodetic Soc. Japan. 43,No.2. 67-77 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sato, T., K. Nawa, K. Shibya, Y. Tamura, M. Ooe, K. Kaminuma and Y. Aoyama: "Polar motion effect on gravity observed with a superconducting gravimeter at Syowa Station, Antractica"IAG Sympo. Vol.117, ed. Segawa et al. 99-106 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sato, T., M. Ooe, K. Nawa, K. Shibya, Y. Tamura and K. Kaminuma: "Long-period tides observed with a superconducting gravimeter at Syowa Station, Antarctica, and their implication to global ocean tide modeling"Phys. Earth Planetary Interiors. 103. 39-53 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Palshin, N.A., L.L. Vanyan, V.A. Kuznetsov, R.D. Medzhitov, V.M. Nikiforov, H. Utada, and H. Shimizu: "Voltage Measurements with the Cable Crossing the Sea of Japan from Nakhodka to Naoetsu"Acta Oceanorgaphica Taiwanica. 36. 11-24 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hisayoshi Shimizu and David E.: "Loper, Time and length scales of buoyancy-driven flow structures in a rotating hydromagnetic fluid"Phys. Earth Planet. Inter.. 104. 307-329 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Geli, L., Blougault, H., Aslanian, D., Briais, A., Dosso, L., Etoubleau, J., Le Formal, J-P., Maia, M., Ondreas, H., Olivet, J-L., Richardson, C., Sayanagi, K., Seama, N., Shab, A., Vlastelic, I., and Yamamoto, M.: "Evolution of the Pacific-Antarctic ridge south of the Udintsev Fracturezone"Science. 278. 1281-1284 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Utada, H., T. Yoshino, T. Okubo, and T. Yukutake: "Seismic resistivity changes observed at Aburatsubo, central Japan, revisited"Tectonophysics. 299. 317-331 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2003-09-17  

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