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

IOCAS-IR

	Origin of submarine canyon-channel systems along the middle segment of West Mariana Ridge, Philippine Sea
	Guangxu ZHANG ; Shuang LI; Wei LI ; Xiujuan WANG ; Duanxin CHEN ; Dongdong DONG ; Wenlong WANG
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2023-05-15
出版年	2023
卷号	v.41 期号:03 页码:53-68
文献类型	CNKI期刊论文
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 understood. Based 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 Sea. These submarine canyon-channels show a main W-E orientation at depth of 2 000–4 500 m. They 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 branches. The upper reaches of submarine canyon-channels are characterized by deeply incised, narrow, V-shaped thalwegs, suggesting the powerful erosion of gravity flows. The distinguished sediment waves are suggested to be resulted from the interaction of turbidity currents and seafloor. Our 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 Ridge. This 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.
关键词	submarine canyon-channel system gravity flow subducting ridges West Mariana Ridge
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;A011;
CNKI专题名称	海洋学;地质学;
分类号	P736
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(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 MegaResearch of Science ; Chinese Academy of Sciences (No. COMS2019Q10) ; Dr. Wei LI is funded by the CAS Pioneer Hundred-Talents Program
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/187124
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofMarineGeologyandEnvironment&CenterforOceanMega-Science,InstituteofOceanology,ChineseAcademyofSciences 2.LaboratoryforMarineMineralResources,NationalLaboratoryforMarineScienceandTechnology 3.UniversityofChineseAcademyofSciences 4.CASKeyLaboratoryofOceanandMarginalSeaGeology,SouthChinaSeaInstituteofOceanology,ChineseAcademyofSciences 5.FrontiersScienceCenterforDeepOceanMultispheresandEarthSystem,KeyLabofSubmarineGeosciencesandProspectingTechniques,MOEandCollegeofMarineGeosciences,OceanUniversityofChina
推荐引用方式 GB/T 7714	Guangxu ZHANG,Shuang LI,Wei LI,et al. Origin of submarine canyon-channel systems along the middle segment of West Mariana Ridge, Philippine Sea. 2023.