A simple model of bedform migration

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Standard

A simple model of bedform migration. / Bartholdy, Jesper; Ernstsen, Verner Brandbyge; Flemming, Burg W; Winter, Christian; Bartholomä, Alex.

I: Earth Surface Processes and Landforms, Bind 35, Nr. 10, 2010, s. 1211-1220.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Bartholdy, J, Ernstsen, VB, Flemming, BW, Winter, C & Bartholomä, A 2010, 'A simple model of bedform migration', Earth Surface Processes and Landforms, bind 35, nr. 10, s. 1211-1220. https://doi.org/10.1002/esp.2002

APA

Bartholdy, J., Ernstsen, V. B., Flemming, B. W., Winter, C., & Bartholomä, A. (2010). A simple model of bedform migration. Earth Surface Processes and Landforms, 35(10), 1211-1220. https://doi.org/10.1002/esp.2002

Vancouver

Bartholdy J, Ernstsen VB, Flemming BW, Winter C, Bartholomä A. A simple model of bedform migration. Earth Surface Processes and Landforms. 2010;35(10):1211-1220. https://doi.org/10.1002/esp.2002

Author

Bartholdy, Jesper ; Ernstsen, Verner Brandbyge ; Flemming, Burg W ; Winter, Christian ; Bartholomä, Alex. / A simple model of bedform migration. I: Earth Surface Processes and Landforms. 2010 ; Bind 35, Nr. 10. s. 1211-1220.

Bibtex

@article{49cf3295c0a04b9eaa17f922969e106c,
title = "A simple model of bedform migration",
abstract = "A model linking subaqueous dune migration to the effective (grain related) shear stress is calibrated by means of flume data for bedform dimensions and migration rates. The effective shear stress is calculated on the basis of a new method assuming a near-bed layer above the mean bed level in which the current velocity accelerates towards the bedform crest. As a consequence, the effective bed shear stress corresponds to the shear stress acting directly on top of the bedform. The model operates with the critical Shields stress as a function of grain size, and predicts the deposition (volume per unit time and width) of naturally-packed bed material on the bedform lee side, qb(crest). The model is simple, built on a rational description of simplified sediment mechanics, and its calibration constant can be explained in accordance with estimated values of the physical constants on which it is based. Predicted values of qb(crest) correlate with measured values of bedform height multiplied by bedform migration rate with R-2 = 0.83. Copyright (C) 2010 John Wiley & Sons, Ltd",
keywords = "bedload, bedforms, dune migration, bedload model, incipient motion, SEDIMENT TRANSPORT, TURBULENCE STRUCTURE, SUBAQUEOUS DUNES, FLOW, RIVER, RIPPLES",
author = "Jesper Bartholdy and Ernstsen, {Verner Brandbyge} and Flemming, {Burg W} and Christian Winter and Alex Bartholom{\"a}",
year = "2010",
doi = "10.1002/esp.2002",
language = "English",
volume = "35",
pages = "1211--1220",
journal = "Earth Surface Processes and Landforms",
issn = "0197-9337",
publisher = "JohnWiley & Sons Ltd",
number = "10",

}

RIS

TY - JOUR

T1 - A simple model of bedform migration

AU - Bartholdy, Jesper

AU - Ernstsen, Verner Brandbyge

AU - Flemming, Burg W

AU - Winter, Christian

AU - Bartholomä, Alex

PY - 2010

Y1 - 2010

N2 - A model linking subaqueous dune migration to the effective (grain related) shear stress is calibrated by means of flume data for bedform dimensions and migration rates. The effective shear stress is calculated on the basis of a new method assuming a near-bed layer above the mean bed level in which the current velocity accelerates towards the bedform crest. As a consequence, the effective bed shear stress corresponds to the shear stress acting directly on top of the bedform. The model operates with the critical Shields stress as a function of grain size, and predicts the deposition (volume per unit time and width) of naturally-packed bed material on the bedform lee side, qb(crest). The model is simple, built on a rational description of simplified sediment mechanics, and its calibration constant can be explained in accordance with estimated values of the physical constants on which it is based. Predicted values of qb(crest) correlate with measured values of bedform height multiplied by bedform migration rate with R-2 = 0.83. Copyright (C) 2010 John Wiley & Sons, Ltd

AB - A model linking subaqueous dune migration to the effective (grain related) shear stress is calibrated by means of flume data for bedform dimensions and migration rates. The effective shear stress is calculated on the basis of a new method assuming a near-bed layer above the mean bed level in which the current velocity accelerates towards the bedform crest. As a consequence, the effective bed shear stress corresponds to the shear stress acting directly on top of the bedform. The model operates with the critical Shields stress as a function of grain size, and predicts the deposition (volume per unit time and width) of naturally-packed bed material on the bedform lee side, qb(crest). The model is simple, built on a rational description of simplified sediment mechanics, and its calibration constant can be explained in accordance with estimated values of the physical constants on which it is based. Predicted values of qb(crest) correlate with measured values of bedform height multiplied by bedform migration rate with R-2 = 0.83. Copyright (C) 2010 John Wiley & Sons, Ltd

KW - bedload

KW - bedforms

KW - dune migration

KW - bedload model

KW - incipient motion

KW - SEDIMENT TRANSPORT

KW - TURBULENCE STRUCTURE

KW - SUBAQUEOUS DUNES

KW - FLOW

KW - RIVER

KW - RIPPLES

U2 - 10.1002/esp.2002

DO - 10.1002/esp.2002

M3 - Journal article

VL - 35

SP - 1211

EP - 1220

JO - Earth Surface Processes and Landforms

JF - Earth Surface Processes and Landforms

SN - 0197-9337

IS - 10

ER -

ID: 33233912