雅浦-卡罗琳海区精细地貌解译与分析  

Fine Geomorphologic Interpretation and Analysis of Yap-Caroline Area

作　　者：刘喆昊 王冰 张建兴 宋永东 庄丽华[1,4] 栾振东[1,2,4] LIU Zhehao;WANG Bing;ZHANG Jianxing;SONG Yongdong;ZHUANG Lihua;LUAN Zhendong(CAS Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Oil and Gas Engineering,Shandong Institute of Petroleum and Chemical Technology,Dongying 257061,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China)

机构地区：[1]中国科学院海洋研究所海洋地质与环境重点实验室,山东青岛266071 [2]中国科学院大学,北京100049 [3]山东石油化工学院油气工程学院,山东东营257061 [4]中国科学院海洋大科学研究中心,山东青岛266071

出　　处：《海洋科学进展》2023年第3期477-487,共11页Advances in Marine Science

基　　金：中国科学院先导专项项目子课题(E0B435101T和XDA22050502);科技部科技基础资源调查专项课题(2017FY100801);中国科学院关键技术人才项目(2018-2021)。

摘　　要：雅浦-卡罗琳海区地处菲律宾海板块、太平洋板块与卡罗琳板块三大板块的汇聚处,发育了复杂的海底地形地貌。利用在该海区采集的多波束测深数据,绘制了高分辨率的海底水深地形图。根据各区相对位置关系,将研究区划分为雅浦弧后盆地地貌体系、雅浦俯冲带地貌体系与卡罗琳海脊地貌体系,并依据板块构造地貌分类方法划分了4级地貌类型。通过对研究区精细地貌的研究发现,帕里西维拉海盆内脊-槽地貌具有不同走向,雅浦海沟不同坡面形态存在差异,索罗尔海槽内可识别线状排列的海山与深海洼地。研究结果表明,这些地貌形态不同程度上受到了弧后扩张方向改变、俯冲侵蚀作用与海槽扩张活动等构造环境的影响。研究结果可为西太平洋与雅浦-卡罗琳海区的海洋科学研究提供基础地质信息支撑。The Yap-Caroline area is located at the junction of multiple plates(Philippine Sea Plate,Pacific Plate,and Caroline Plate)with complex seabed topography.Using the multi-beam sounding data collected in this area,this study established a high-resolution seabed topographic map.Based on the topographic characteristics,the study area was sub-divided into the following three units,the Yap back-arc basin geomorphic system,the Yap subduction zone geomorphic system and the Caroline ridge geomorphic system.According to the geomorphological classification standard of the plate tectonics,this study classified four classes of geomorphological units.Based on detailed geomorphologic analysis,we found that the ridge-trough landforms in the Parece Vela Basin have different orientations,and slopes on both sides of the Yap Trench have different morphologic features.The linear arrangement patterns of seamounts and deep-sea depressions can be identified in the Solor Trough.The results showed that the tectonic activities,such as the collision of the Yap Trench and the Caroline Ridge,subduction erosion,and trough spreading,play significant roles in shaping the landforms of the study area.

关 键 词：西太平洋 雅浦海沟 卡罗琳海脊 俯冲系统 地形地貌 

分 类 号：P737.2[天文地球—海洋地质]