The Role of Bottom Currents on the Morphological Development Around a Drowned Carbonate Platform,NW South China Sea

作     者：YU Kaiqi ALVES Tiago M LI Wei LI Shuang LI Jian ZHAO Fang WU Shiguo ZHAN Wenhuan YU Kaiqi;ALVES Tiago M.;LI Wei;LI Shuang;LI Jian;ZHAO Fang;WU Shiguo;ZHAN Wenhuan

作者机构：CAS Key Laboratory of Ocean and Marginal Sea GeologySouth China Sea Institute of OceanologyChinese Academyof SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)Guangzhou 511458China University of Chinese Academy of SciencesBeijing 100049China 3D Seismic LaboratorySchool of Earth and Ocean SciencesCardiff UniversityCardiff CF103ATUK Institute of Deep-Sea Science and EngineeringChinese Academy of SciencesSanya 572000China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2022年第21卷第4期

页      面：801-812页

核心收录：

学科分类：070704[理学-海洋地质] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 

基　　金：We thank the PetroChina Hangzhou Research Institute of Geology for the permissions to release the seismic data.This study was financially supported by the Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou)(No.GML2019ZD0104) the Guangdong Basic and Applied Basic Research Foundation(No.2020B1515020016) the National Natural Science Foundation of Guangdong Province(No.2020A1515010497) the National Natu-ral Science Foundation of China(No.41876054) the Guangdong Pearl River Talents Program(No.2017GC010510) Dr.Wei Li is specially funded by the CAS Pioneer Hundred Talents Program(No.Y8SL011001) 

主　　题：carbonate platform seafloor morphology contourite channels bottom currents fluid seepages South China Sea 

摘      要：The seafloor around carbonate platforms is largely shaped and modified by downslope ***,the role of alongslope processes,including bottom currents,on the morphological development of carbonate platforms remains poorly ***,we use high-resolution multibeam bathymetric data and two-dimensional seismic profiles to investigate the detailed sea-floor morphology around the Zhongjianbei carbonate platform(ZCP)in the northwest South China Sea.A series of depositional bodies and erosional channels are identified to the south of the ZCP and are interpreted as contourite drifts and channels resulted from the interaction between bottom currents and bathymetric *** addition,active fluid seepages have led to the formation of widespread pockmarks on the ***,the contourite channels and widespread pockmarks also show a close relationship in their *** propose that the contourite channels around the ZCP are evolved from the coalescence of pockmarks under the persistent erosion of bottom *** on the morphological analysis,we reconstruct the past bottom-current pathways around the ZCP that are parallel to the platform slopes and heading to the *** study provides new insights into the formation of complex bathymetry and helps understanding how bottom currents and active fluid seepages can influence the morphological development around carbonate platforms.