DOI: 10.1002/2016GL067667
论文题名: The role of biophysical cohesion on subaqueous bed form size
作者: Parsons D.R. ; Schindler R.J. ; Hope J.A. ; Malarkey J. ; Baas J.H. ; Peakall J. ; Manning A.J. ; Ye L. ; Simmons S. ; Paterson D.M. ; Aspden R.J. ; Bass S.J. ; Davies A.G. ; Lichtman I.D. ; Thorne P.D.
刊名: Geophysical Research Letters
ISSN: 0094-9353
EISSN: 1944-9084
出版年: 2016
卷: 43, 期: 4 起始页码: 1566
结束页码: 1573
语种: 英语
英文关键词: bed forms
; biophysical
; cohesivity
; roughness
; sediment
Scopus关键词: Biophysics
; Forecasting
; Sediment transport
; Sedimentology
; Sediments
; Surface roughness
; Bed forms
; Biophysical
; Cohesivity
; Controlled laboratories
; Cross stratifications
; Fine-grained sediment
; Morphodynamic modeling
; Paleoenvironmental reconstruction
; Adhesion
; bed roughness
; bedform
; biophysics
; cohesion
; morphodynamics
; paleoenvironment
; sediment transport
; sedimentary sequence
; size
; stratification
英文摘要: Biologically active, fine-grained sediment forms abundant sedimentary deposits on Earth's surface, and mixed mud-sand dominates many coasts, deltas, and estuaries. Our predictions of sediment transport and bed roughness in these environments presently rely on empirically based bed form predictors that are based exclusively on biologically inactive cohesionless silt, sand, and gravel. This approach underpins many paleoenvironmental reconstructions of sedimentary successions, which rely on analysis of cross-stratification and bounding surfaces produced by migrating bed forms. Here we present controlled laboratory experiments that identify and quantify the influence of physical and biological cohesion on equilibrium bed form morphology. The results show the profound influence of biological cohesion on bed form size and identify how cohesive bonding mechanisms in different sediment mixtures govern the relationships. The findings highlight that existing bed form predictors require reformulation for combined biophysical cohesive effects in order to improve morphodynamic model predictions and to enhance the interpretations of these environments in the geological record. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84976249334&doi=10.1002%2f2016GL067667&partnerID=40&md5=f3ba055bf6cd6cbe7be86582d07ddb4b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10316
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: Department of Geography, Environment and Earth Sciences, University of Hull, Hull, United Kingdom
Recommended Citation:
Parsons D.R.,Schindler R.J.,Hope J.A.,et al. The role of biophysical cohesion on subaqueous bed form size[J]. Geophysical Research Letters,2016-01-01,43(4).