HIGH RESOLUTIONAL RECONSTRUCTION OF TROPICAL ENVIRONMENTS AND EVALUATION OF LINKAGE BETWEEN HIGHLATITUDE ICEASHEETSAND LOALATITUDE ENVIRONMENTS

• Project/Area Number: 17253006
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Geology
• Research Institution: The University of Tokyo
• Principal Investigator: KAWAHATA Hodaka The University of Tokyo, Graduate School of Frontier Sciences, Professor (20356851)
• Co-Investigator(Kenkyū-buntansha): YOKOYAMA Yusuke The University of Tokyo, GRADUATE SCHOOL OF SCIENCE, LECTURER (10359648) ; SUZUKI Atsushi National Institute of Advanced Indestrial Science and Technology, INSTITUTE OF GEOLOGY AND GEOINFORMATION, RESEARCHER (60344199) ; ODA Hirokuni The University of Tokyo, INSTITUTE OF GEOLOGY AND GEOINFORMATION, RESEARCHER (90356725) ; OHKOUCHI Naohito JAMSTGEC, INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, GROUP LEADER (00281832) ; KIMOTO Katsunori JAMSTGEC, 地球内部変動研究センター, RESEARCHER (40359162)
• Project Period (FY): 2005 – 2007
• Project Status: Completed (Fiscal Year 2007)
• Budget Amount: ¥37,830,000 (Direct Cost: ¥29,100,000、Indirect Cost: ¥8,730,000); Fiscal Year 2007: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000); Fiscal Year 2006: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000); Fiscal Year 2005: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
• Keywords: TROPICAL / HIGH LATITUDE / ICE SHEET / LOW LATITUTDE / ENVIRONMENTS / CORALS / IMAGES PROJECT / WESTERN EQUATLRIAL PACIFAC / 炭素14年

Research Abstract

The equatorial western Pacific is characterized by the Western Pacific Warm Pool (WPWP) which has the highest open-ocean water temperatures in the world and a surface area of approximately 2.0×10^7 km^2 extending from 100°E to 180, the largest single expanse of warm water on our planet. This swath of ocean near New Guinea has a temperature consistently higher than 28℃, about 2 to 5℃ higher than that of other equatorial regions. The temperature and geographic extension of the WPWP fluctuate from year to year and have a relation with ENSO (El Nino - Southern Oscillation) events.
High resolution study from the modern to 220 kyr was conducted by using MD05-2970 obtained from Timor Sea to understand the evolution of the Australian monsoon since previous works proposed much lesser Australian monsoon during the ice ages. Our planktonic foraminiferal oxygen isotopic compositions range from -1.0 permil for the last glacial maximum to -2.8 permil for the Holocene which is consistent with the record previously reported from nearby locations. The present study showed the similar structures of oxygen isotopes between the penultimate glacial maximum and the last interglacial. However the oxygen isotope record obtained from the Makasser Strait indicated -1.0 permil and -4.0 permil respectively for the last two glacial maxima and the interglacials. Any discrepancies in the oxygen isotopes are attributable to changes in the oxygen isotopes of seawater due to the hydrological differences. These results shows that Austral summer monsoon was not as strong as today to create salinity differences between the two during the glacial times.

Research Products

• [Journal Article] ENSO related variations in biogeochemistry of AA and HA in settling particles along the equatorial Pacific Ocean (2007)
  • Author(s): Gupta, L.P. and Kawahata, H.
  • Journal Title: Journal of Oceanography 63 Pages: 695-709
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Onset of biotic and environmental recovery from the end-Permian mass extinction (2007)
  • Author(s): Chen, Z., Kaiho, and Kawahata, H.
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology 252 Pages: 176-187
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Paleoceanography of the northwestern Pacific during the Albian (2007)
  • Author(s): Yamamura, M., Kawahata, H., Matsumoto, K., and Nishi, H.
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology 254 Pages: 477-491
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] ENSO related variations in biogeochemistry of AA and H particles along the equatorial Pacific Ocean (2007)
  • Author(s): Gupta, L. P., Kawahata, H.
  • Journal Title: Journal of Oceanography 63 Pages: 695-709
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Endolithic aspartic acid as a proxy of fluctuations in c (2007)
  • Author(s): Gupta, L. P., Suzuki, A., Kawahata, H.
  • Journal Title: JGR Biogeosciences 112 (G1) : Art. No.G01001
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Onset of biotic and envirommental recovery from the end-Permian mass extinction (2007)
  • Author(s): Chen, Z., Kaiho, and Kawahata, H.
  • Journal Title: Palaeogeography, Palaeoclimatology.Palaeoecology 252 Pages: 176-187
  • Peer Reviewed
• [Journal Article] Paleoceanography of the northwestern Pacific during the Albian (2007)
  • Author(s): Yamamura, M., Kawahata, H., , Matsumoto, K., and Nishi, H.
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology 254 Pages: 477-491
  • Peer Reviewed
• [Journal Article] Sea-level during the early deglacia$ the Great Barrier Reef, Australia (2006)
  • Author(s): Yokoyama, Y, Purcell, A., Marshall, J. F., Lambeck, K.
  • Journal Title: Global and Planetary Change 53 Pages: 147-153
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] 2006. Variability in the Uranium isotopic composition of the glacial-interglacial timescales (2006)
  • Author(s): Esat, T. M., Yokoyama, Y.
  • Journal Title: Geochimica et Cosmochimica Acta 70 Pages: 4140-4150
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Growth patterns of the last ice age coral terraces at Huon Peninsul (2006)
  • Author(s): Esat, T. M., Yokoyama, Y.
  • Journal Title: Global and Planetary Change 54 Pages: 216-224
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Distribution and temporal changes of lead in the surface seawater in the wester adjacent seas derived from coral skeletons (2006)
  • Author(s): Inoue, M., Hata, A., Suzuki, A., Nohara, M., Sikazono, N., Wyss, Y., Hantro, W. S., Dong Kawahata, H.
  • Journal Title: Environmental Pollution 144 Pages: 1045-1052
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Settling particles in the central North Pacific (2006)
  • Author(s): Kawahata, H.
  • Journal Title: In Kawahata, IL and Awaya, Y (ed.) Global Climate Response of Carbon cycle in the Equatorial Pacific and Ir and Adjacent Landmasses Elsevier Oceanography Series (Amsterdam) Pages: 107-133
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Understanding biogeochemical processes in the Pacific Ocean o$ labile components of settling particles (2006)
  • Author(s): Gupta, L. P., Kawahata H.
  • Journal Title: In Kawahata, H. and Awaya, Y. (ed.) Global Climate Response of Carbon cycle in the Equatorial Pacific and It and Adjacent Landmasses, Elsevier Oceanography Series. (Amsterdam) Pages: 135-156
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Reconstruction of paleoenvironmental changes based on the planktonic foraminiferal assemblages off Shimokita in the northwestern North Pacific (2006)
  • Author(s): Kuroyanagi, A., Kawahata, H., Narita, H., Ohkushi, K., Aramaki,T.
  • Journal Title: Global and Planetary Change 53 Pages: 92-107
• [Journal Article] Biogenic and abiogenic sedimentation in the northern East China Sea in response to sea-level change during the Late Pleistocene (2006)
  • Author(s): Kawahata, H., Nohara, M., Aoki, K., Minoshima, K., Gupta, L.P.
  • Journal Title: Global and Planetary Change 53 Pages: 108-121
• [Journal Article] Downcore diagenetic changes in organic matter and implications for paleoproductivity estimates (2006)
  • Author(s): Gupta, L.P., Kawahata, H.
  • Journal Title: Global and Planetary Change 53 Pages: 122-136
• [Journal Article] Oxygen and carbon stable isotope systematics in coral near its latitudinat limit : the coral response to low thermal stress (2006)
  • Author(s): Omata, T., Suzuki, A., Kawahata, H., Nojima, S., Hata, A., Minoshima,K.
  • Journal Title: Global and Planetary Change 53 Pages: 137-146
• [Journal Article] Sr/Ca rations as indicators of varying modes of pelagic carbonate diagenesis in the ooze, chalk and limestone realms (2006)
  • Author(s): Ando, A., Kawahata, H., Kakegawa, T.
  • Journal Title: Sedimentary Geology 191 Pages: 37-53
• [Journal Article] Stable isotope and chemical composition of pearls - Biomineralization in cultured pearl oysters in Ago Bay, Japan - (2006)
  • Author(s): Kawahata, H., Inoue, M., Nohara, M., Suzuki,A.
  • Journal Title: Journal of Oceanography 62 Pages: 405-412
  • NAID: 10018002128
• [Journal Article] Biogenic and abiogenic sedimentation in the northern East China Sea in response to sea-level chance during the Late Pleistocene. (2006)
  • Author(s): Kawahata, H., Nohara, M., Aoki, K., Minoshima, K.Gupta, L.P.
  • Journal Title: Global and Planetary Change (印刷中)
• [Journal Article] History of the inflow of the warm Tsushima Current into the Sea of Japan between 3.5 and 0.8 Ma (2006)
  • Author(s): Kitamura, A., Kimoto, K.
  • Journal Title: Paleogeog.,Paleoclimatol.Paleoecol (印刷中)
  • NAID: 120000795035
• [Journal Article] Links between Asian Monsoon and North Atlantic climate during the last 23,000 years inferred from concentrations of Lipid biomarker in the Japan Sea sediment core. (2006)
  • Author(s): Yokoyama, Y., Naruse, T., Ogawa, N.O., Tada, R., Kitazato, H., Ohkouchi, N.
  • Journal Title: Global Planetary Change (印刷中)
• [Journal Article] Global iron connections between desert biogeochemistry and climate (2005)
  • Author(s): Jickells, T., An, Z. S., Andersen, K. K., Baker, A. R., Bergametti, G, Brookes, N., Cao, J. J., Boyd R. A., Hunter, KA., Kawahata, H., Kubilay, N., LaRoche, J., Liss, P. S., Mahowald, N., Pr$ Ridgwekkm A. J., Tegen, I., Torres, R.
  • Journal Title: Science 308 Pages: 67-71
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Paleoenvironmental cnorthern area of the East China Sea during the past 42,000 years (2005)
  • Author(s): Ijiri, A., Wang, L., Oba, T. Kawahata, H., Huang, C. Y., Huang, C. Y.
  • Journal Title: Palaeogeography, Palaeoclimatology, Palaeoecology 219 Pages: 239-261
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Transition of low-salinity water in the We Warm Pool recorded in the nitrogen isotopic ratios of settling particles (2005)
  • Author(s): Yoshikawa, C., Nakatsuka, T., Kawahata, H.
  • Journal Title: Geophysical Research Letters 32 Pages: 14615-14615
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Intercolony variability of skeletal oxygen$ isotope signatures of cultured Pontes corals : temperature-controlled experiments (2005)
  • Author(s): Suzuki, A., Hibino, K., Iwase, A., Kawahata, H.
  • Journal Title: Geochimica et Cosmochimica Acta 69 Pages: 4453-4462
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Millennial-scale variations of sea-ice expsouthwestern part of the Okhotsk Sea during the past 120 kyr : Age model and ice-rafted debris Core MD01-2412 (2005)
  • Author(s): Sakamoto, T., Ikehara, M., Uchida, M., Aoki, K., Shibata, Y., Kanamatsu, T., Harada, N., lijima Asahi, H., Takahashi, K, Sakai, H., Kawahata, H.
  • Journal Title: Global and Planetary Change 53 Pages: 58-77
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Recon paleoenvironmental changes based on the planktonic foraminiferal assemblages off Shim northwestern North Pacific (2005)
  • Author(s): Kuroyanagi, A., Kawabata, H., Narita, H., Ohkushi, K, Aramaki, T.
  • Journal Title: Global and Planetary Change 53 Pages: 92-107
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Biogenic and aoogenic $ in the northern East China Sea in response to sea-level change during the Late Pleistocene (2005)
  • Author(s): Kawahata, H., Nohara, M., Aoki, K., Minoshima, K., Gupta, L. P.
  • Journal Title: Global and Planetary Change 53 Pages: 108-121
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Downcore diagenetic changes in organic matter and imp paleoproductivity estimates (2005)
  • Author(s): Gupta, L. P., Kawahata, H.
  • Journal Title: Global and Planetary Change 53 Pages: 122-136
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Oxygen and $ isotope systematics in coral near its latitudinal limit : the coral response to low thermal stress (2005)
  • Author(s): Omata, T., Suzuki, A., Kawahata, H. Nojima, S., Hata, A, Minoshima, K.
  • Journal Title: Global and Planetary Change 53 Pages: 137-146
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Intercolony variability of skeletal oxygen and carbon isotope signatures of cultured Porites corals : temperature-controlled experiments (2005)
  • Author(s): Suzuki, A., Hibino, K., Iwase, A., Kawahata, H.
  • Journal Title: Geochim.Cosmochim.Acta 69 Pages: 4453-4462
• [Journal Article] Radiocarbon dating of alkenones from marine sediments - I.Isolation protocol (2005)
  • Author(s): Ohkouchi, N., Xu, L., Reddy, C.M., Montlucon, D., Eglinton, T.I.
  • Journal Title: Radiocarbon 47 Pages: 401-412
• [Journal Article] A geomagnetic paleointensity stack between 0.8 and 3.0 Ma from equatorial Pacific sediment cores (2005)
  • Author(s): Yamazaki, T., Oda, H
  • Journal Title: Geochem.Geophys.Geosyst. 6
• [Presentation] Linkage between human activity and environments during the mi Hypsithermal climatic interval-Changes in human activity at the Sannai-Maruyama (2007)
  • Author(s): Kawahata, H.
  • Organizer: AGU Fall Meeting 2007
  • Place of Presentation: USA
  • Year and Date: 2007-12-12
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Mg/Ca ratio in a coral skeleton a proxy for the skeletal growth rate (2007)
  • Author(s): Inoue, M., Suzuki, A., Wahyoe, C., Kawahata, H.
  • Organizer: AGU Fall Meeting 2007
  • Place of Presentation: USA
  • Year and Date: 2007-12-12
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Endolithic aspartic acid as proxies of flu coral growth (2007)
  • Author(s): Gupta, L. P., Suzuki, A., Kawahata, H.
  • Organizer: Goldschmidt conference 2007
  • Place of Presentation: G
  • Year and Date: 2007-08-23
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Winter temperature variations based on coral oxygen isotope record from Ishigaki Island, t$ Japan and transition of its dominant climate factor. with 1988/1989 climate regime s$ (2007)
  • Author(s): Tsunoda, T., Suzuki, A., Minoshima, K., Shikazono, N., Kawahata, H.
  • Organizer: Goldschmidt conference 2007
  • Place of Presentation: G
  • Year and Date: 2007-08-23
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Coral records of the 1 tropical northwest Pacific : ENSO, mass coral bleaching, and global warming (2007)
  • Author(s): Suzuki, A., Gaeam, M. K., Siringan. C, Kawhaata, H.
  • Organizer: Goldschmidt conference 2007
  • Place of Presentation: G
  • Year and Date: 2007-08-23
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Winter sea surface temperature variations based on coral oxygen isotope record from Ishigaki Island, the Ryukyus, Japan and transition of its dominant climate factor with 1988/1989 climate regime shift (2007)
  • Author(s): Tsunoda T, Kawahata H, Suzuki A.
  • Organizer: Goldschmidt conference 2007
  • Place of Presentation: ケルン大学
  • Year and Date: 2007-08-22
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Winter sea surface temperature variations based on coral oxygen isotope record from Ishigaki Island, the Ryukyus, Japan and transition of its dominant climatefactor with 1988/1989 clkmate regkme shift (2007)
  • Author(s): Tsunoda T, Kawahata H, Suzuki A,
  • Organizer: Goldschmidt conference 2007
  • Place of Presentation: ケルン大学
  • Year and Date: 2007-08-22
• [Presentation] Reconstruction of seasonal SS$ combination of sediment trap and sediments in the central North Pacific (2006)
  • Author(s): Hokanishi, N., Kawahata, H., Ujiie, H.
  • Organizer: AGU Fall Meeting 2006
  • Place of Presentation: USA
  • Year and Date: 2006-12-13
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Contribution of resuspended particles to the sediments at IMAGES co$ the Pacific (2006)
  • Author(s): Minoshima, K., Kawahata, H., Ishizaki, Y., Yamaoka, K., Gupta, L. P.
  • Organizer: AGU Fall Meeting 2006
  • Place of Presentation: USA
  • Year and Date: 2006-12-03
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Con$ resuspended particles to the sediments at IMAGES coring sites in the Pacific (2006)
  • Author(s): Minoshima, K., Kawahata, H., Ishizaki, Y, Yamaoka, K., Gupta, L. P.
  • Organizer: Goldschmidt2006
  • Place of Presentation: Australia
  • Year and Date: 2006-08-20
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Contamination of metallic and non-metallic tox$ compounds in the coral reefs and adjacent river mouths in the Ryukyu Islands (2006)
  • Author(s): Kawahata, H., Kitada, Y.
  • Organizer: Japan international Conference on DELTAS : 3rdAnn$ of IGCP-475 DeltaMAP & 2nd meeting of CCC project
  • Place of Presentation: Universiti Brunei Darussalan
  • Year and Date: 2006-07-20
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Sub-seafloor hydrothermal alteration of oceanic crust of the $ Oman ophiolites - Interaction with global environment during the mid-Cretaceous (2006)
  • Author(s): Hodala Kawahata
  • Organizer: AOGS
  • Place of Presentation: Singapore
  • Year and Date: 2006-07-01
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Biogen c and abiogenic sedimentation in the no China Sea in response to sea-level change during the Late Pleistocene (2005)
  • Author(s): Kawahata, H., Nohara, M.
  • Organizer: AOGS
  • Place of Presentation: Singapore
  • Year and Date: 2005-07-01
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Spatial and seasonal distribution of planktonic f Neogloboquadrina pachyderma and reconstruction of paleoceanography off Shimoki (2005)
  • Author(s): Kuroyanagi, A, Kawahata, H.
  • Organizer: AOGS
  • Place of Presentation: Singapore
  • Year and Date: 2005-07-01
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Stable isotopic composition of two morphotypes of Glo$ Tuber (white) in the subtorpical gyre in the North Pacific (2005)
  • Author(s): Kayo Minoshima, Hodaka Kawahata, Tomohisa Irino, Ken Ikehara, Masao Uchi Yoneda, Yasuyuki Shibata
  • Organizer: American Geophysical Union Fall Meeting
  • Place of Presentation: USA
  • Description: 「研究成果報告書概要(欧文)」より