Benthic biology influences sedimentation in submarine channel bends: Coupling of biology, sedimentation and flow
Benthic biology influences sedimentation in submarine channel bends: Coupling of biology, sedimentation and flow
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底栖生物影响海底河道弯曲处的沉积:生物、沉积和流动的耦合
DOI:
10.1002/dep2.265
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发表时间:
2024
期刊:
影响因子:
--
通讯作者:
Azpiroz-Zabala M
中科院分区:
文献类型:
--
作者:
Azpiroz-Zabala M
Submarine channels are key features for the transport of flow and nutrients into deep water. Previous studies of their morphology and channel evolution have treated these systems as abiotic, and therefore assume that physical processes are solely responsible for morphological development. Here, a unique dataset is utilised that includes spatial measurements around a channel bend that hosts active sediment gravity flows. The data include flow velocity and density, alongside bed grain size and channel‐floor benthic macrofauna. Analysis of these parameters demonstrate that while physical processes control the broadest scale variations in sedimentation around and across the channel, benthic biology plays a critical role in stabilising sediment and trapping fines. This leads to much broader mixed grain sizes than would be expected from purely abiotic sedimentation, and the maintenance of sediment beds in positions where all the sediment should be actively migrating. Given that previous work has also shown that submarine channels can be biological hotspots, then the present study suggests that benthic biology probably plays a key role in channel morphology and evolution, and that these need to be considered both in the modern and when considering examples preserved in the rock record.
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DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
M. Gregg;E. Özsoy
通讯作者:
E. Özsoy
影响因子:
3.3
作者:
Daniel R. Parsons;P. R. Jackson;J. Czuba;F. Engel;B. Rhoads;Kevin A. Oberg;James L. Best;David S. Mueller;Kevin K. Johnson;James D. Riley
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DOI:
10.1002/2013jf002812
发表时间:
2014
期刊:
Journal of Geophysical Research: Earth Surface
影响因子:
--
作者:
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通讯作者:
J. Imran
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
L. Pozzato;C. Cathalot;C. Berrached;F. Toussaint;E. Stetten;J. Caprais;L. Pastor;K. Olu;C. Rabouille
通讯作者:
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影响因子:
3.9
作者:
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通讯作者:
J. Peakall;E. Sumner