1992 Fiscal Year Final Research Report Summary
A Geological,Geophysical,and Geochemical Study of the Mid-Oceanic Ridge System
| Project/Area Number |
03402013
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
固体地球物理学
|
|---|
| Research Institution | University of Tokyo |
|---|
Principal Investigator |
TAMAKI Kensaku Assoc.Professor,Ocean Research Institue,University of Tokyo, 海洋研究所, 助教授 (50188421)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ISHII Teruaki Professor,Ocean Research Institue,University of Tokyo, 海洋研究所, 助手 (80111582)
SEGAWA Jiro Professor,Ocean Research Institue,University of Tokyo, 海洋研究所, 教授 (60013570)
KOBAYASHI Kazuo Professor,Ocean Research Institue,University of Tokyo, 海洋研究所, 教授 (10013559)
GAMO Toshitaka Assoc.Professor,Ocean Research Institue,University of Tokyo, 海洋研究所, 助教授 (70143550)
FUJIMOTO Hiromi Assoc.Professor,Ocean Research Institue,University of Tokyo, 海洋研究所, 助教授 (50107455)
|
|---|
| Project Period (FY) |
1991 – 1992
|
| Keywords | Mid-oceanic ridge / Data base / Geophysics / Geology |
|---|
| Research Abstract |
(1)A marine geophysical data base for mid-oceanic ridge system was constructed. The data base includes the 5-min grided data of gravity anomalies,ocean floor topography,geoid, and age of ocean floor. The data base also includes the 5-min grided marine magnetic anomalies of the northern and southern Atlantic,the northeast Pacific,the southeast Pacific, and the eastern Indian Ocean. World wide underway geophysical data was also compiled. A software system to access these data bases was developed as well as the data analyses software system including forward/inversion modeling methods. Some of these softwares will be posted in public domain. (2)By using above software system,the interaciton between hotspots and mid-oceanic ridge system was investigated. It was figured out that the manner of eruption of hotspots are strongly affected the existence of mid-oceanic ridge. (3)Rock coring system was developed for petrological research at the mid-oceanic ridge. Fundamental experiments for the long-term observation of earthquakes and heatflow were conducted.
|
