碩士 / 國立中山大學 / 海洋科學系研究所 / 107 / The Kuroshio current is the biggest warm current near Taiwan, which is part of North Pacific gyre. It’s the second largest current in the world. Kuroshio brings a lot of heat and water vapor from low latitude area to high latitude area, playing an important role to variation of the climate in the north hemisphere. It has been a plenty of works about the Kuroshio path variation during the Last Glacial Maximum (LGM), however, using different proxy indicating different results, it still needs more proxy to compliment the record. Our research takes the core GH11-2017 from Okinawa through, combined with the core GH08-2004 and MD012404, which has been published, with Mg/Ca ratio and oxygen isotope of three planktonic foraminiferal species to reconstruct the vertical structure of water mass in Okinawa through. We found that there is almost no difference between the temperature structure in three cores, but the salinity data of MD012404 shows different variation in LGM. However, core GH11-2017 didn’t show the same variation like MD012404. We inferred that Kuroshio didn’t flow into the Okinawa Trough directly. Instead, it converged with Ryukyu current by restricting with the topography, and flowing into the Okinawa Trough via Kirama Gap.
| Identifer | oai:union.ndltd.org:TW/107NSYS5276003 |
| Date | January 2018 |
| Creators | Shih-Jie Wu, 吳士傑 |
| Contributors | Yuan-Pin Chang, 張詠斌 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 113 |
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