菲律宾板块残留脊的俯冲构造演化和地质属性的研究意义

菲律宾海盆内部次海盆的构造演化存模式并不成熟，九州-帕劳脊（KPR）位于菲律宾海盆的中部，南北贯穿整个菲律宾海盆，将菲律宾海盆划分为三个次海盆，KPR脊在菲律宾海盆的演化中起到了决定性的作用，但是对于KPR脊的形成机制、构造演化并不清楚，这是目前深海研究中的一个重大科学问题，也是当前大陆架划界中国际学术界关注的热点。本项目的研究目标为以揭示菲律宾板块残留脊KPR脊的俯冲演化、形成机制和地质属性为目标，运用多道地震、重、磁、深部地震OBS以及多波束地形地貌等综合地球物理数据，开展残留脊的形成机制、构造演化、俯冲过程、地形地貌、地壳结构、地球物理场特征等关键科学问题研究，为研究菲律宾板块的俯冲机制、俯冲方向以及残留洋脊俯冲过程和形成机制等未解决的重大科学问题提供支持，建立西太平洋边缘海海盆构造动力学过程及重点海脊与海底高地的地质构造成因机制，为维护国家海洋权益提供直接的科学证据。

Kyushu - Palau ridge locates in the centre of the Philippine Sea Basin which is divided into three parts: West Philippine Basin, Shikoku Basin and the Parece Vela Basin. KPR runs through the entire Philippine Sea Basin and plays the focus role in the evolution of the Philippine Sea Plate .This is a major scientific problems in the deep-sea research and also the delimitation of the continental shelf in the international academic community.This project will investigate the subduction evolution ,formation mechanism and geological properties of the residual ridge-KPR with the integrated geophysical data of the multi-channel seismic, gravity,magnetic, ocean bottom seismic and multibeam , to reveal the residual ridge formation mechanism, the tectonic evolution of the subduction process, topography, crustal structure, geophysical field characteristics of key scientific issues for the study of the mechanism of the subduction of the Philippine Sea Plate, the subduction direction of the residual ridges, subduction process and the formation mechanism which are not resolved .The result will support the establishment of the Western Pacific sea basin tectonic dynamics process and geological structure formation mechanism of the ridge.The result will also provide services to safeguard national maritime rights and interests