1997 Fiscal Year Annual Research Report

トペックス・ポセイドン海面高度計による海洋と固体地球のダイナミクスの研究

Research Project

Project/Area Number	08044094
Research Institution	KYUSHU UNIVERSITY
Principal Investigator	今脇資郎九州大学, 応用力学研究所, 教授 (40025474)
Co-Investigator(Kenkyū-buntansha)	KOBLINSKY C. アメリカ航空宇宙局, ゴダード宇宙飛翔センター, 主任研究員大江昌嗣国立天文台, 教授 (00088783) 久保田雅久東海大学, 海洋学部, 教授 (90147124) 川村宏東北大学, 理学部, 教授 (40169769) 福田洋一京都大学, 大学院・理学研究科, 助教授 (30133854)
Keywords	海面高度計 / TOPEX / POSEIDON / 海洋変動 / ジオイド / 動力異常 / 潮汐
Research Abstract	人工衛星に搭載したマイクロ波海面高度計は,海面の高さを数センチの精度でグローバルに観測できる測器であり,そのデータは海洋と固体地球の力学に関する研究において極めて有効であると考えられている.本研究では,海洋物理学研究者と固体地球物理学研究者が互いに緊密な連携を取りながら協力研究を行うことを目指した. 昨年度10月には英国で,今年度10月には仏国で開かれた衛星海面高度計トペックス・ポセイドンの科学検討チームの会合に,研究代表者と研究分担者延べ9名を派遣し,海面高度計に関連した本研究グループの研究成果を披露するとともに,国際的な最新の研究情報を得た.昨年度,今年度とも11月に東京においてグループ全体の研究集会を開催し,衛星海面高度計のデータの処理や解析法に関する情報交換を行った.この集会に合わせて,昨年度は豪州の,今年度は米国と仏国の研究分担者計4名を招請し国際的な共同研究の促進を図った.その成果を集会の報告書としてまとめた.また,両年度とも2月と3月には米国の研究分担者計3名を招請し,各地で打合わせ会を開催して情報交換を行った. これらの活動を通じて以下の成果が得られた.(1)海面高度計データを,現場の海洋観測データと組み合わせることによって,日本南岸における黒潮の流量の長期にわたる連続記録が得られた.(2)同様に現場観測データを併用することによって,北太平洋全域にわたる表層循環とその変動の様子が明らかになった.(3)海面高度計データを海洋の数値モデルに同化する技術を向上させた.(4)海面高度計データから全球的な海洋潮汐の精密なモデルが得られた.(5)従来は機密扱いであったGEOSATの測地ミッション期間中のデータの解放にともない,全球的な高分解能の重力異常分布が得られた.(6)重力異常の現場観測データなどを併用することによって,特に日本近海に関しての高精度のジオイド分布が得られた.

Research Products
(32 results)

All Other

All Publications (32 results)

[Publications] S.Aoki and S.Imawaki: "Eddy activities of the surface layer in the western North Pacific detected by satellite altimeter and radiometer" Journal of Oceanography. 52. 457-474 (1996)
[Publications] 内田裕, 今脇資郎: "衛星海面高度計と潮位計による四国沖の水位変化の比較" 九州大学応用力学研究所所報. 80. 71-85 (1996)
[Publications] S.Imawaki, H.Uchida, H.Ichikawa, M.Fukasawa, S.Umatani and ASUKA Group: "Time series of the Kuroshio transport derived from field observations and altimetry data" International WOCE Newsletter. 25. 15-18 (1997)
[Publications] N.Ebuchi and K.Hanawa: "Comparison of sea surface heights observed by TOPEX altimeter with sea level data at Chichijima" Journal of Oceanography. 52. 259-273 (1996)
[Publications] ムサ・アシュラフ、田中寅夫: "西南日本における水蒸気ラジオメータ観測に基づいたWet Mapping Functionの包括的な解析" 京都大学防災研究所年報. 39B-1. 287-295 (1996)
[Publications] S.Fujiwara and H.Toh: "Geomagnetic transfer functions in Japan obtained by first order geomagnetic survey" Jounral of Geomagnetism and Geolectricity. 48. 1071-1101 (1996)
[Publications] Isoguchi, O., H.Kawamura and T.Kono: "A study on wind-driven circulation in the subarctic North Pacific using TOPEX/POSEIDON altimeter data." Journal of Geophysical Research. 102. 12,457-12,468 (1997)
[Publications] Aoki, S.: "Trends and interannual variability of surface layer temperature in the Indian sector of the Southern Ocean observed by Japanese Antarctic Research Expeditions." Journal of Oceanography. 53. 623-631 (1997)
[Publications] Uchida, H., S.Imawaki and J.-H.Hu: "Comparison of Kuroshio surface velocities derived from satellite altimeter and drifting buoy data." Journal of Oceanography. 54(in press). (1998)
[Publications] 今脇資郎, 馬谷紳一郎, 内田裕, 市川洋, 深澤理郎, ASUKAグループ: "四国沖の黒潮の流量の評価" 九州大学応用力学研究所所報. 82. 97-112 (1997)
[Publications] Imawaki, S., H.Uchida, H.Ichikawa, M.Fukasawa, S.Umatani and ASUKA Group: "Time series of the Kuroshio transport derived from field observations and altimetry data." International WOCE Newsletter. 25. 15-18 (1997)
[Publications] Yanagi, T., A.Morimoto and K.Ichikawa: "Co-tidal and Co-range Charts for the East China Sea and the Yellow Sea Derived from Satellite Altimetric Data." Journal of Oceanography. 53. 303-309 (1997)
[Publications] Yanagi, T., A.Morimoto and K.Ichikawa: "Seasonal variation in surface circulation of the East China Sea and the Yellow sea derived from satellite altimetric data." Continental Shelf Research. 17. 655-664 (1997)
[Publications] Kuragano, T.and A.Shibata: "Sea surface dynamic height of the Pacific Ocean derived from TOPEX/POSEIDON altimeter data : Calculation method and accuracy." Journal of Oceanography. 53. 585-599 (1997)
[Publications] Terada, K.and Y.Fukuda: "Applicability of 10 Hz satellite altimeter data to the antarctic margin.Proc." NIPR Symposium on Antarctic Geosciences. 10. 26-35 (1997)
[Publications] Terada, K.and Y.Fukuda: "Applicability of 10 Hz sampling data of satellitealtimetry." IAG Symposia 117:Segawa et al. (eds.) GraGeoMar,Tokyo,Japan,Sep.30-Oct.5,1996. 423-428 (1997)
[Publications] Fukuda, Y.and T.Sato: "Gravity effects of sea level variation at the superconducting gravimeter sites,estimated from ERS-1 and TOPEX/Poseidon altimeter data." IAG Symposia 117:Segawa et al. (eds.) GraGeoMar,Tokyo,Japan,Sep.30-Oct.5,1996. 107-114 (1997)
[Publications] Fukuda, Y., J.Kuroda, Y.Takabatake, J.Itoh and M.Murakami: "Improvement of JGEOID 93 by the geoidal heights derived from GPS/Leveling survey." IAG Symposia 117:Segawa et al. (eds.),GraGeoMar,Tokyo,Japan,Sep.30-Oct.5,1996. 589-596 (1997)
[Publications] Tamura, Y., Y.Aoyama and K.Nawa: "Gravimetric tidal factors at Syowa Station obtained from three-year observations with a superconducting gravimeter." Proc.NIPR Symposium on Antarctic Geosciences. 10. 1-10 (1997)
[Publications] Sato, T., M.Ooe, K.Nawa, K.Shibuya, 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." Physics of the Earth and Planetary Interiors. 103. 39-53 (1997)
[Publications] Kubota, M., T.Okamoto and H.Yokota: "Barotropic response of the North Pacific to various wind forcings." Journal of Advanced Marine Science and Technology Society. (submitted). (1998)
[Publications] Kubota, M.and H.Yokota: "Construction of surface wind stress fields with high temporal resolution by using the ERS-1 scatterometer data." Journal of Oceanography. (accepted). (1998)
[Publications] Kubota, M.And M.Kawaguchi: "Mechanism of cola water regions observed in winter in the Indian Ocean." MAUSAM. (submitted). (1998)
[Publications] Kubota, M.And S.Mitsumori: "Turbulent heat flux estimated by using satellite data over the western North Pacific." in Space Remote Sensing of Subtropical Ocean,C.T.Liu (Ed.) Elsevier. 127-136 (1997)
[Publications] Kubota, M.And S.Mitsumori: "Latent heat flux estimated by satellite data" in Air-Sea Interaction by Remote Sensing. (accepted). (1998)
[Publications] Kubota, M., H.Yokota, M.Suzuki, and Y.Kishimoto: "Assimilation of TOPEX/POSEIDON altimeter data in a reduced gravity model of the North Pacific." in Air-Sea Interaction by Remote Sensing. (accepted). (1998)
[Publications] Tanaka, T., T.Nakano, K.Hirahara and A.Mousa: "GPS observations for crustal movements and meteorology." Proceedings of IAG Regional Symposium,Szekesfehervar. 16-22 (1996)
[Publications] 田中寅夫, 中村佳重郎, 大谷文夫ほか: "ジャワ島西部におけるGPSおよび重力測定" 京都大学防災研究所年報. 39B-1. 173-182 (1996)
[Publications] Uchida, H., S.Imawaki and J.-H.Hu: "Comparison of Kuroshio surface velocities derived from satellite altimeter and drifting buoy data." Journal of Oceanography. 54. 115-122 (1998)
[Publications] Kimura, N., K.Mahapatora and Y.Okada: "Validation of Coastal Zone Color Scanner (CZCS) derived phytoplankton pigment concentration in Antarctic Peninsular waters using regional predictive bio-optical algorithm." Journal of Airborne & Satellite Physical & Fishery Oceanography,Sora to Umi. 15. 1-13 (1997)
[Publications] Kimura, N.and Y.Okada: "Estimation of vertical profile of chlorophyll concentration around the Antarctic Peninsula derived from CZCS images by the statistical method." Proc.NIPR Symposium on Polar Biology. 10. 66-76 (1997)
[Publications] Okada, Y.and N.Kimura: "A direct comparison of CZCS derived pigment concentration with simultaneous ship observation along 41°30'N." Journal of the School of Marine Science and Technology,Tokai University. 44. 65-73 (1997)

1997 Fiscal Year Annual Research Report

トペックス・ポセイドン海面高度計による海洋と固体地球のダイナミクスの研究

Principal Investigator

今脇 資郎 九州大学, 応用力学研究所, 教授 (40025474)

Research Products

[Publications] S.Aoki and S.Imawaki: "Eddy activities of the surface layer in the western North Pacific detected by satellite altimeter and radiometer" Journal of Oceanography. 52. 457-474 (1996)

[Publications] 内田 裕, 今脇 資郎: "衛星海面高度計と潮位計による四国沖の水位変化の比較" 九州大学応用力学研究所所報. 80. 71-85 (1996)

[Publications] S.Imawaki, H.Uchida, H.Ichikawa, M.Fukasawa, S.Umatani and ASUKA Group: "Time series of the Kuroshio transport derived from field observations and altimetry data" International WOCE Newsletter. 25. 15-18 (1997)

[Publications] N.Ebuchi and K.Hanawa: "Comparison of sea surface heights observed by TOPEX altimeter with sea level data at Chichijima" Journal of Oceanography. 52. 259-273 (1996)

[Publications] ムサ・アシュラフ、田中 寅夫: "西南日本における水蒸気ラジオメータ観測に基づいたWet Mapping Functionの包括的な解析" 京都大学防災研究所年報. 39B-1. 287-295 (1996)

[Publications] S.Fujiwara and H.Toh: "Geomagnetic transfer functions in Japan obtained by first order geomagnetic survey" Jounral of Geomagnetism and Geolectricity. 48. 1071-1101 (1996)

[Publications] Isoguchi, O., H.Kawamura and T.Kono: "A study on wind-driven circulation in the subarctic North Pacific using TOPEX/POSEIDON altimeter data." Journal of Geophysical Research. 102. 12,457-12,468 (1997)

[Publications] Aoki, S.: "Trends and interannual variability of surface layer temperature in the Indian sector of the Southern Ocean observed by Japanese Antarctic Research Expeditions." Journal of Oceanography. 53. 623-631 (1997)

[Publications] Uchida, H., S.Imawaki and J.-H.Hu: "Comparison of Kuroshio surface velocities derived from satellite altimeter and drifting buoy data." Journal of Oceanography. 54(in press). (1998)

[Publications] 今脇 資郎, 馬谷 紳一郎, 内田 裕, 市川 洋, 深澤 理郎, ASUKAグループ: "四国沖の黒潮の流量の評価" 九州大学応用力学研究所所報. 82. 97-112 (1997)

[Publications] Imawaki, S., H.Uchida, H.Ichikawa, M.Fukasawa, S.Umatani and ASUKA Group: "Time series of the Kuroshio transport derived from field observations and altimetry data." International WOCE Newsletter. 25. 15-18 (1997)

[Publications] Yanagi, T., A.Morimoto and K.Ichikawa: "Co-tidal and Co-range Charts for the East China Sea and the Yellow Sea Derived from Satellite Altimetric Data." Journal of Oceanography. 53. 303-309 (1997)

[Publications] Yanagi, T., A.Morimoto and K.Ichikawa: "Seasonal variation in surface circulation of the East China Sea and the Yellow sea derived from satellite altimetric data." Continental Shelf Research. 17. 655-664 (1997)

[Publications] Kuragano, T.and A.Shibata: "Sea surface dynamic height of the Pacific Ocean derived from TOPEX/POSEIDON altimeter data : Calculation method and accuracy." Journal of Oceanography. 53. 585-599 (1997)

[Publications] Terada, K.and Y.Fukuda: "Applicability of 10 Hz satellite altimeter data to the antarctic margin.Proc." NIPR Symposium on Antarctic Geosciences. 10. 26-35 (1997)

[Publications] Terada, K.and Y.Fukuda: "Applicability of 10 Hz sampling data of satellitealtimetry." IAG Symposia 117:Segawa et al. (eds.) GraGeoMar,Tokyo,Japan,Sep.30-Oct.5,1996. 423-428 (1997)

[Publications] Fukuda, Y.and T.Sato: "Gravity effects of sea level variation at the superconducting gravimeter sites,estimated from ERS-1 and TOPEX/Poseidon altimeter data." IAG Symposia 117:Segawa et al. (eds.) GraGeoMar,Tokyo,Japan,Sep.30-Oct.5,1996. 107-114 (1997)

[Publications] Fukuda, Y., J.Kuroda, Y.Takabatake, J.Itoh and M.Murakami: "Improvement of JGEOID 93 by the geoidal heights derived from GPS/Leveling survey." IAG Symposia 117:Segawa et al. (eds.),GraGeoMar,Tokyo,Japan,Sep.30-Oct.5,1996. 589-596 (1997)

[Publications] Tamura, Y., Y.Aoyama and K.Nawa: "Gravimetric tidal factors at Syowa Station obtained from three-year observations with a superconducting gravimeter." Proc.NIPR Symposium on Antarctic Geosciences. 10. 1-10 (1997)

[Publications] Sato, T., M.Ooe, K.Nawa, K.Shibuya, 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." Physics of the Earth and Planetary Interiors. 103. 39-53 (1997)

[Publications] Kubota, M., T.Okamoto and H.Yokota: "Barotropic response of the North Pacific to various wind forcings." Journal of Advanced Marine Science and Technology Society. (submitted). (1998)

[Publications] Kubota, M.and H.Yokota: "Construction of surface wind stress fields with high temporal resolution by using the ERS-1 scatterometer data." Journal of Oceanography. (accepted). (1998)

[Publications] Kubota, M.And M.Kawaguchi: "Mechanism of cola water regions observed in winter in the Indian Ocean." MAUSAM. (submitted). (1998)

[Publications] Kubota, M.And S.Mitsumori: "Turbulent heat flux estimated by using satellite data over the western North Pacific." in Space Remote Sensing of Subtropical Ocean,C.T.Liu (Ed.) Elsevier. 127-136 (1997)

[Publications] Kubota, M.And S.Mitsumori: "Latent heat flux estimated by satellite data" in Air-Sea Interaction by Remote Sensing. (accepted). (1998)

[Publications] Kubota, M., H.Yokota, M.Suzuki, and Y.Kishimoto: "Assimilation of TOPEX/POSEIDON altimeter data in a reduced gravity model of the North Pacific." in Air-Sea Interaction by Remote Sensing. (accepted). (1998)

[Publications] Tanaka, T., T.Nakano, K.Hirahara and A.Mousa: "GPS observations for crustal movements and meteorology." Proceedings of IAG Regional Symposium,Szekesfehervar. 16-22 (1996)

[Publications] 田中 寅夫, 中村 佳重郎, 大谷 文夫 ほか: "ジャワ島西部におけるGPSおよび重力測定" 京都大学防災研究所年報. 39B-1. 173-182 (1996)

[Publications] Uchida, H., S.Imawaki and J.-H.Hu: "Comparison of Kuroshio surface velocities derived from satellite altimeter and drifting buoy data." Journal of Oceanography. 54. 115-122 (1998)

[Publications] Kimura, N.and Y.Okada: "Estimation of vertical profile of chlorophyll concentration around the Antarctic Peninsula derived from CZCS images by the statistical method." Proc.NIPR Symposium on Polar Biology. 10. 66-76 (1997)

[Publications] Okada, Y.and N.Kimura: "A direct comparison of CZCS derived pigment concentration with simultaneous ship observation along 41°30'N." Journal of the School of Marine Science and Technology,Tokai University. 44. 65-73 (1997)

今脇資郎九州大学, 応用力学研究所, 教授 (40025474)

[Publications] 内田裕, 今脇資郎: "衛星海面高度計と潮位計による四国沖の水位変化の比較" 九州大学応用力学研究所所報. 80. 71-85 (1996)

[Publications] ムサ・アシュラフ、田中寅夫: "西南日本における水蒸気ラジオメータ観測に基づいたWet Mapping Functionの包括的な解析" 京都大学防災研究所年報. 39B-1. 287-295 (1996)

[Publications] 今脇資郎, 馬谷紳一郎, 内田裕, 市川洋, 深澤理郎, ASUKAグループ: "四国沖の黒潮の流量の評価" 九州大学応用力学研究所所報. 82. 97-112 (1997)

[Publications] 田中寅夫, 中村佳重郎, 大谷文夫ほか: "ジャワ島西部におけるGPSおよび重力測定" 京都大学防災研究所年報. 39B-1. 173-182 (1996)