Origin of submarine canyon-channel systems along the middle segment of West Mariana Ridge,Philippine Sea

作     者：Guangxu ZHANG Shuang LI Wei LI Xiujuan WANG Duanxin CHEN Dongdong DONG Wenlong WANG Guangxu ZHANG;Shuang LI;Wei LI;Xiujuan WANG;Duanxin CHEN;Dongdong DONG;Wenlong WANG

作者机构：Key Laboratory of Marine Geology and Environment&Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral ResourcesNational Laboratory for Marine Science and TechnologyQingdao 266071China University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Ocean and Marginal Sea GeologySouth China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Frontiers Science Center for Deep Ocean Multispheres and Earth SystemKey Lab of Submarine Geosciences and Prospecting TechniquesMOE and College of Marine GeosciencesOcean University of ChinaQingdao 266100China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2023年第41卷第3期

页      面：881-896页

核心收录：

学科分类：0710[理学-生物学] 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：Supported by the National Natural Science Foundation of China(No.91958211) the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB42020000) the Laoshan Laboratory Project(No.LSKJ202203503) the Key Deployment Project of Center for Ocean Mega-Research of Science,Chinese Academy of Sciences(No.COMS2019Q10).Dr.Wei LI is funded by the CAS Pioneer Hundred-Talents Program 

主　　题：submarine canyon-channel system gravity flow subducting ridges West Mariana Ridge 

摘      要：Submarine canyon-channel systems have been documented in the Parece Vela Basin,West Mariana Ridge;however,the mechanism of the formation and controlling factors remain poorly *** on high-resolution multibeam bathymetric data and two-dimensional(2D)seismic profiles,we identified and mapped the submarine canyon-channel system along the middle segment of West Mariana Ridge in the Philippine *** submarine canyon-channels show a main W-E orientation at depth of 2000–4500 *** are approximately 72–128 km in length and 1.3–15 km in width,and their canyon heads are adjacent to the seamounts with several *** upper reaches of submarine canyon-channels are characterized by deeply incised,narrow,V-shaped thalwegs,suggesting the powerful erosion of gravity *** distinguished sediment waves are suggested to be resulted from the interaction of turbidity currents and *** observations demonstrate that gravity flows originated from the collapses of seamount flanks plays a vital role in developing the submarine canyonchannel system along the West Mariana *** work provides better understanding of erosion,transport,and deposition of sediments from subducting ridges to deep-water basins,and also new insights into the origin and evolution of submarine canyon-channel systems along subducting ridges.