Sediment fluxes and buffering in the post-glacial Indus Basin

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	Sediment fluxes and buffering in the post-glacial Indus Basin
	Clift, PD ; Giosan, L
刊名	BASIN RESEARCH
	2014
卷号	26 期号:3 页码:369-386
ISSN号	0950-091X
通讯作者	pclift@lsu.edu ; lgiosan@whoi.edu
中文摘要	The Indus drainage has experienced major variations in climate since the Last Glacial Maximum (LGM) that have affected the volumes and compositions of the sediment reaching the ocean since that time. We here present a comprehensive first-order source-to-sink budget spanning the time since the LGM. We show that buffering of sediment in the floodplain accounts for ca. 20-25% of the mass flux. Sedimentation rates have varied greatly and must have been on average three times the recent, predamming rates. Much of the sediment was released by incision of fluvial terraces constructed behind landslide dams within the mountains, and especially along the major river valleys. New bedrock erosion is estimated to supply around 45% of the sedimentation. Around 50% of deposited sediment lies under the southern floodplains, with 50% offshore in large shelf clinoforms. Provenance indicators show a change of erosional focus during the Early Holocene, but no change in the Mid-Late Holocene because of further reworking from the floodplains. While suspended loads travel rapidly from source-to-sink, zircon grains in the bedload show travel times of 7-14kyr. The largest lag times are anticipated in the Indus submarine fan where sedimentation lags erosion by at least 10kyr.
学科主题	Geology
收录类别	SCI
资助信息	Leverhulme Trust; University of Aberdeen; NERC; National Science Foundation; Woods Hole Oceanographic Institution
原文出处	WILEY-BLACKWELL
WOS记录号	WOS:000335657800002
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10622]
专题	南海海洋研究所_中科院边缘海地质重点实验室
推荐引用方式 GB/T 7714	Clift, PD,Giosan, L. Sediment fluxes and buffering in the post-glacial Indus Basin[J]. BASIN RESEARCH,2014,26(3):369-386.
APA	Clift, PD,&Giosan, L.(2014).Sediment fluxes and buffering in the post-glacial Indus Basin.BASIN RESEARCH,26(3),369-386.
MLA	Clift, PD,et al."Sediment fluxes and buffering in the post-glacial Indus Basin".BASIN RESEARCH 26.3(2014):369-386.