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Progradation Speed of Tide-Dominated Tidal Flats Decreases Stronger Than LinearlyWith Decreasing Sediment Availability and LinearlyWith Sea Level Rise. / Maan, Cynthia; van Prooijen, Bram; Wang, Zhengbing .

In: Geophysical Research Letters, Vol. 46, No. 1, 16.01.2019, p. 262-271.

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@article{915f33c8ecc24b508ab1c820d8d138f5,
title = "Progradation Speed of Tide-Dominated Tidal Flats Decreases Stronger Than LinearlyWith Decreasing Sediment Availability and LinearlyWith Sea Level Rise",
abstract = "We use the results of a one-dimensional morphodynamic model and the basis of the “Lagrangian equilibrium state” (Maan et al., 2015, https://doi.org/10.1002/2014JF003311) to derive a quantitative relationship between the progradation speed of tidal flats and the suspended sediment concentration in their adjacent waters and show that the speed increases more than linearly with the concentration. We also show that horizontally prograding flats rise vertically with sea level rise at the expense of their horizontal speed via a linear relationship. If accretion rates are insufficient to keep up with sea level rise, however, the intertidal flat submerges and retreats landward at the same time. We apply the obtained relationships to the Yangtze Estuary to estimate the critical sediment concentration level below which a shift from progradation to retreat can be expected.",
keywords = "coastal retreat, intertidal flats, progradation speed, sea level rise, sediment availability, waves",
author = "Cynthia Maan and {van Prooijen}, Bram and Zhengbing Wang",
year = "2019",
month = "1",
day = "16",
doi = "10.1029/2018GL079933",
language = "English",
volume = "46",
pages = "262--271",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "1",

}

RIS

TY - JOUR

T1 - Progradation Speed of Tide-Dominated Tidal Flats Decreases Stronger Than LinearlyWith Decreasing Sediment Availability and LinearlyWith Sea Level Rise

AU - Maan, Cynthia

AU - van Prooijen, Bram

AU - Wang, Zhengbing

PY - 2019/1/16

Y1 - 2019/1/16

N2 - We use the results of a one-dimensional morphodynamic model and the basis of the “Lagrangian equilibrium state” (Maan et al., 2015, https://doi.org/10.1002/2014JF003311) to derive a quantitative relationship between the progradation speed of tidal flats and the suspended sediment concentration in their adjacent waters and show that the speed increases more than linearly with the concentration. We also show that horizontally prograding flats rise vertically with sea level rise at the expense of their horizontal speed via a linear relationship. If accretion rates are insufficient to keep up with sea level rise, however, the intertidal flat submerges and retreats landward at the same time. We apply the obtained relationships to the Yangtze Estuary to estimate the critical sediment concentration level below which a shift from progradation to retreat can be expected.

AB - We use the results of a one-dimensional morphodynamic model and the basis of the “Lagrangian equilibrium state” (Maan et al., 2015, https://doi.org/10.1002/2014JF003311) to derive a quantitative relationship between the progradation speed of tidal flats and the suspended sediment concentration in their adjacent waters and show that the speed increases more than linearly with the concentration. We also show that horizontally prograding flats rise vertically with sea level rise at the expense of their horizontal speed via a linear relationship. If accretion rates are insufficient to keep up with sea level rise, however, the intertidal flat submerges and retreats landward at the same time. We apply the obtained relationships to the Yangtze Estuary to estimate the critical sediment concentration level below which a shift from progradation to retreat can be expected.

KW - coastal retreat

KW - intertidal flats

KW - progradation speed

KW - sea level rise

KW - sediment availability

KW - waves

UR - http://www.scopus.com/inward/record.url?scp=85059548994&partnerID=8YFLogxK

U2 - 10.1029/2018GL079933

DO - 10.1029/2018GL079933

M3 - Article

VL - 46

SP - 262

EP - 271

JO - Geophysical Research Letters

T2 - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 1

ER -

ID: 48083912