{"id":"cbfc9a5f-811e-419e-8ba2-c79bc75579a2","title":"中国东海陆架区地壳结构观测数据集（2017-2019）","title_en":"Crustal structure observation data set of East China Sea shelf (2017-2019)","serial":"","user_limit":"为尊重知识产权、保障数据作者的权益、扩展数据中心的服务、评估数据的应用潜力，请数据使用者在使用数据所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明数据来源和数据作者。对于转载（二次或多次发布）的数据，作者还须注明原始数据来源。","instructions":"文件名：速度结构数据；\n数据读取方式：该数据可以直接用文本程序（如记事本）和PDF打开，内容为单台OBS记录剖面和速度结构。","description":"在国家重点研发计划“燕山期重大地质事件的深部过程与资源效应”的课题“关键廊带的综合地球物理探测与深部过程”资助下，2017和2019年，我们在东海陆架区完成两条OBS广角地震剖面。利用获得的OBS数据，采用层析成像正、反演方法，得到东海陆架区深部地壳结构。速度结构揭示地壳厚度从浙闽造山带的30km减薄到陆架盆地的15km，对应的地壳速度从4.40-7.15 km/s变化到4.30-6.90 km/s。结合以往的研究，浙闽造山带存在高磁异常，我们认为浙闽造山带和陆架盆地的地壳结构存在较大差异，东海可能不是华南陆缘的延伸；在浙闽造山带和陆架盆地的交界处存在宽约50km，速度高达7.15km/s的高速异常。我们推测该异常为中生代缝合带，高速异常与古太平洋板块俯冲后撤时，板块撕裂产生的岩浆活动有关。","doi":"10.11888/Geo.tpdc.271292","projection":"","language":"zh","share_type":"online","east":125.09,"west":122.47,"south":28.34,"north":30.07,"scale":null,"crs":null,"filesize":40.1,"share_policy":"a","ts_created":"2021-05-17T15:05:01.385861+08:00","doi_type":"拥有自主知识产权","ts_updated":"2021-05-17T21:14:57.409889+08:00","time_description":"","datas_group":3,"time_description_en":"","data_format":null,"project":[11],"specials":[],"cite":null,"review_status":5,"review_invite":[{"user_name":"张衡","username":"张衡","email":"zhangheng415@itpcas.ac.cn","is_cancel_expert":false}],"review_editor":{"id":42421,"last_login":"2022-04-08T15:16:51.670544+08:00","username":"任慧霞","email":"510727846@qq.com","is_active":true,"is_staff":true,"user_name":"任慧霞"},"data_sources":null,"temporal_resolution":"Monthly","spatial_resolution":"100km - 1000km","license":"Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","fund":[521],"subtopics":{"metadata":"cbfc9a5f-811e-419e-8ba2-c79bc75579a2","three_pole":null,"third_pole":null},"username":"方鹏高","review_time":null,"protected_duration":null,"protected_describe":null,"is_important":false,"hit_count":446}