| DOI: | 10.1002/2015GL063360
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| 论文题名: | Monsoonal hillslope processes determine grain size-specific suspended sediment fluxes in a trans-Himalayan river |
| 作者: | Struck M.; Andermann C.; Hovius N.; Korup O.; Turowski J.M.; Bista R.; Pandit H.P.; Dahal R.K.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8784
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| EISSN: | 1944-8515
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| 出版年: | 2015
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| 卷: | 42, 期:7 | | 起始页码: | 2302
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| 结束页码: | 2308
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| 语种: | 英语
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| 英文关键词: | erosion
; grain size
; Himalayas
; landslide
; river transport
; suspended sediments
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| Scopus关键词: | Atmospheric thermodynamics
; Erosion
; Grain size and shape
; Landslides
; Rivers
; Sediments
; Grain size
; Himalayas
; Landslide inventories
; Orographic barriers
; River transports
; Sediment grain size
; Sedimentary records
; Suspended sediment flux
; Suspended sediments
; fluvial deposit
; grain size
; hillslope
; mass wasting
; sediment transport
; suspended sediment
; Kali Gandaki River
; Nepal
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| 英文摘要: | Sediments in rivers record the dynamics of erosion processes. While bulk sediment fluxes are easily and routinely obtained, sediment caliber remains underexplored when inferring erosion mechanisms. Yet sediment grain size distributions may be the key to discriminating their origin. We have studied grain size-specific suspended sediment fluxes in the Kali Gandaki, a major trans-Himalayan river. Two strategically located gauging stations enable tracing of sediment caliber on either side of the Himalayan orographic barrier. The data show that fine sediment input into the northern headwaters is persistent, while coarse sediment comes from the High Himalayas during the summer monsoon. A temporally matching landslide inventory similarly indicates the prominence of monsoon-driven hillslope mass wasting. Thus, mechanisms of sediment supply can leave strong traces in the fluvial caliber, which could project well beyond the mountain front and add to the variability of the sedimentary record of orogen erosion. ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928698871&doi=10.1002%2f2015GL063360&partnerID=40&md5=26ff2f547e9f2565a70c82952061bfcf
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8400
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | GFZ German Research Centre for Geosciences, Potsdam, Germany
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| Recommended Citation: | |
Struck M.,Andermann C.,Hovius N.,et al. Monsoonal hillslope processes determine grain size-specific suspended sediment fluxes in a trans-Himalayan river[J]. Geophysical Research Letters,2015-01-01,42(7).
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