Study on geomorphology and structure of coral reefs as a disaster protection feature in coastal areas
Project/Area Number |
22240084
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Geography
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Research Institution | Okayama University |
Principal Investigator |
KAN Hironobu 岡山大学, 大学院・教育学研究科, 教授 (20294390)
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Co-Investigator(Kenkyū-buntansha) |
NAGAO Masayuki 独立行政法人産業技術総合研究所, 地質情報部門, 主任研究員 (70251626)
HORI Nobuyuki 奈良大学, 文学部, 教授 (40087143)
NAKASHIMA Yosuke 有明工業高等専門学校, 一般教育科, 教授 (90172303)
GOTO Kazuhisa 東北大学, 災害科学国際研究所, 准教授 (10376543)
SUZUKI Atsushi 独立行政法人産業技術総合研究所, 地質情報部門, グループ長 (60344199)
横山 祐典 東京大学, 大気海洋研究所, 准教授 (10359648)
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Co-Investigator(Renkei-kenkyūsha) |
YOKOYAMA Yusuke 東京大学, 大気海洋研究所, 准教授 (10359648)
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Research Collaborator |
URATA Kensaku 大阪経済法科大学, 地域総合研究所, 教授 (10449845)
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Project Period (FY) |
2010 – 2012
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Project Status |
Completed (Fiscal Year 2012)
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Budget Amount *help |
¥52,130,000 (Direct Cost: ¥40,100,000、Indirect Cost: ¥12,030,000)
Fiscal Year 2012: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2011: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2010: ¥36,400,000 (Direct Cost: ¥28,000,000、Indirect Cost: ¥8,400,000)
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Keywords | サンゴ礁 / 地形 / マルチビーム測深 / 浅海域マッピング / ボーリングコア / 地質 / 防災 / 海面上昇 |
Research Abstract |
In this research program, we observed a concrete and detailed knowledge on wave-resistant structure of reefs from geomorphology and sedimentology. The firstly, we attempts to observe three-dimensional topography of outer reef slope such as spurs and grooves using high-resolution multibeam bathymetric sonar which was introduced by this research grant. This is the first 3D visualization of complex outer reef slope topography in the Ryukyu Islands. We also analyze the drilling cores that we drilled in the Ryukyu Islands and Maldives. The development of submarine cement is distributed significantly at the upper reef edges and contributed to form the rigid reef structure.
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Report
(4 results)
Research Products
(58 results)
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[Journal Article] Disturbances with hiatus in high-latitude coral reef growth during Holocene: Correlation with millennial-scale global climate change2012
Author(s)
Hamanaka, N., Kan, H., Yokoyama, Y.Okamoto, T., Nakashima, Y., Kawana, T.
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Journal Title
Global and Planetary Change
Volume: Vol.80-81
Pages: 21-35
Related Report
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[Journal Article] Estimate of calcification responses to thermal and freshening stresses based on culture experiments with symbiotic and aposymbiotic primary polyps of a coral, Acropora digitifera2012
Author(s)
Inoue M., Shinmen K., Kawahata H., Nakamura T., Tanaka Y., Kato A., Shinzato C., Iguchi A., Kan H., Suzuki A., Sakai K
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Journal Title
Global and Planetary Change
Volume: 92-93
Pages: 1-7
DOI
Related Report
Peer Reviewed
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[Journal Article] Mid-Holocene sea-surface temperature reconstruction using fossil corals from Kume Island, Ryukyu, Japan.2012
Author(s)
Seki, A., Yokoyama, Y., Suzuki, A., Kawakubo, Y., Okai, T., Miyairi, Y., Matsuzaki, Y., Namizaki, N., Kan, H.
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Journal Title
Geochemical Journal
Volume: 46
NAID
Related Report
Peer Reviewed
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[Journal Article] Disturbances with hiatus in high-latitude coral reef growth during Holocene : Correlation with millennial-scale global climate change2012
Author(s)
Hamanaka, N., Kan, H., Yokoyama, Y., Okamoto, T., Nakashima, Y., Kawana, T.
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Journal Title
Global and Planetary Change
Volume: 80-81
Pages: 21-3
DOI
Related Report
Peer Reviewed
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[Journal Article] An attempt to find small artificial objectsin the shallow sea bottom using broadband multibeam echosounder2011
Author(s)
Nagao, M., Kan, H., Nakano, K., Takada, S., Ogasawara, H., Nakamura, T., Ohashi, T., Suzuki,A.
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Journal Title
Proc. International Sessions in Coastal Engineering, JSCE
Volume: Vol.2
Pages: 51-55
Related Report
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[Journal Article] An attempt to find small artificial objectsin the shallow sea bottom using broadband multibeam echosounder2011
Author(s)
Nagao, M., Kan, H., Nakano, K., Takada, S., Ogasawara, H., Nakamura, T., Ohashi, T., Suzuki, A.
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Journal Title
Proceedings of International Sessions in Coastal Engineering, JSCE
Volume: 2
Pages: 51-55
Related Report
Peer Reviewed
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[Journal Article] Ryukyu Islands2011
Author(s)
Kan, H.
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Journal Title
In : Hopley, D.(ed.) Encyelopedia of Moderm Coral Reefa : structure, form and process, Springer, Encyclopedia of Earth Science Series
Pages: 940-945
Related Report
Peer Reviewed
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[Journal Article] Historic 1771 Meiwa tsunami confirmed by high-resolution U/Th dating of massive Porites coral bouiders at Ishigaki Island in the Ryukyus, Japan.2010
Author(s)
Araoka, D., Inoue M., Suzuki, A., Yokoyama Y., Edwards, R.L., Cheng, H., Matsuzaki, H., Kan, H., Shikazono, N., Kawahata, H.
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Journal Title
Geochemistry, Geophysics, Geosystems
Volume: 11(6)
Pages: 1-11
Related Report
Peer Reviewed
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[Presentation] Submerged karst discovered in the southern Ryukyu Islands: coastal sea-floor geomorphology by multibeam bathymetric survey.2013
Author(s)
Kan,H., Urata,K., Nagao,M., Hori,N., Ohashi,T., Yokoyama,Y., Nakashima,Y., Goto,K., Suzuki,A.
Organizer
International Geographical Union Regional Conference 2013 (IGU2013)
Place of Presentation
京都国際会館
Related Report
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[Presentation] Discovery of submerged karst terrain in modern reef area by broadband multibeam bathymetric survey in the southern Ryukyu Islands, Japan.2013
Author(s)
Kan,H., Urata,K., Nagao,M., Hori,N., Ohashi,T., Yokoyama,Y., Nakashima,Y., Goto,K., Suzuki,A.
Organizer
8th IAG International Conference on Geomorphology
Place of Presentation
Centre des Congrés de la Villette, Paris
Related Report
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[Presentation] High-resolution 3D-mapping of reef edge and reef slope using multibeam bathymetric sonar.2012
Author(s)
Kan, H., Nagao, M., Nakashima, Y., Ohashi, T., Goto, K, Hori, N., Yokoyama, Y., Suzuki, A., Takada, S., Nakano, K
Organizer
Pacific Congress on Marine Science and Technology (PACON)2012(口頭発表)
Place of Presentation
Sheraton Kona Resort, Kailua-Kona, Hawaii, USA
Year and Date
2012-12-11
Related Report
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[Presentation] Reconstruction of Holocene sea surface temperature in the East China Sea : from radiocarbon dating and Sr/Ca ration of coral2011
Author(s)
Seki, A., Yokoyama, Y., Suzuki, A., Okai, T., Matsuzaki, H., Miyairi, Y., Kan, H.
Organizer
The 4th East Asia AMS Symposium
Place of Presentation
東京大学
Related Report
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[Presentation] Massive Porites coral boulders cast shore by 1771 Meiwa tsunami, demonstrated by high-precision ^<230>Th dating.2010
Author(s)
Araoka, D., Inoue M., Suzuki A., Yokoyama., Y., Edwards, R.L., Cheng, H, Matsuzaki, H., Kan, H., Shikazono, N., Kawahata H.
Organizer
3rd International Tsunami Field Symposium
Place of Presentation
東北大学
Related Report
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[Presentation] East China Sea Mid-Holocene sea-surface temperature reconstructed from Sr/Ca measurement for fossil corals
Author(s)
Seki, A., Yokoyama, Y., Suzuki, A., Kawakubo, Y., Okai, T., Miyairi, Y., Matsuzaki, Y., Namizaki, N., Kan, H.
Organizer
University of Hawaii and University of Tokyo Joint Symposium on Ocean, Coastal and Atomosphere Sciences.
Place of Presentation
University of Hawaii
Related Report
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[Presentation] Mid to late Holocene sea-surface temperature reconstruction using fossil corals from Kume Island, Ryukyu, Japan.
Author(s)
Seki, A., Yokoyama, Y., Suzuki, A., Kawakubo, Y., Okai, T., Miyairi, Y., Matsuzaki, Y., Namizaki, N., Kan, H.
Organizer
American Geophysical Union, Fall Meeting
Place of Presentation
San Francisco, USA
Related Report
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[Presentation] High-resolution 3D-mapping of reef edge and reef slope using multibeam bathymetric sonar.
Author(s)
Kan, H., Nagao, M., Nakashima, Y., Ohashi, T., Goto, K, Hori, N., Yokoyama, Y., Suzuki, A., Takada, S., Nakano, K.
Organizer
Pacific Congress on Marine Science and Technology (PACON) 2012
Place of Presentation
Sheraton Kona Resort, Kailua-Kona, Hawaii, USA
Related Report
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[Presentation] Resolution of multibeam bathymetric mapping and the dimension of coral reef topography
Author(s)
Kan, H., Nagao, M., Nakashima, Y., Hori, N., Yokoyama, Y., Goto, K, Ohashi, T., Suzuki, A., Takada, S., Nakano, K.
Organizer
日本地球惑星科学連合2013年大会 H-GM03 Geomorphologyセッション(国際セッション)
Place of Presentation
幕張メッセ国際会議場
Related Report
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