2004-11-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/706364摘要：自2000年迄今，吾人於南沖繩海槽南端地區的研究指出，發生於台灣東部外海規模大於6.8的海底地震可能是造成深海沈積物中數個濁流沈積層的主要原因。這些濁流沈積層給予吾人一個絕佳機會討論現代地震觀測記錄與地層記錄間的相關性。 本計畫希望結合沈積物年代資料、沈積物顆粒分析結果及X-光攝影影像來幫助吾人瞭解此等濁流沈積物之來源及傳輸途徑。此外尚可提供吾人未來研究地震所引發之海底邊坡破壞的可能區域及其影響範圍所需之基礎資料。最終希望透過此等研究，合理的評估岩心中之濁流沈積層記錄作為古地震研究重要工具所可能遭遇的困難及解決方案。 <br> Abstract: In the past four years, our research in the southernmost part of Okinawa Trough suggest that the turbidite layers in deep sea sediments may caused by those large earthquakes (ML＞6.8) occurred off eastern Taiwan. These turbidite layers give us an excellent chance to discuss the relationships between modern earthquake observation records and stratigraphic records. In this project, we expect to combine the geochronological data, particle analysis results and X-radiograph images to help us understand the source and transport of the turbidites. It also can give us some basic information about how and where can earthquake induce slope failure and the scope of influence in the future. Finally, we hope this study can help us make a rational assessment of the difficulties by using turbidite records as an important tool for paleo-seismic research, and the scheme for solving the problems.南沖繩海槽濁流沈積物古地震South Okinawa Troughturbiditepaleo-seismic