%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Krien, Y.
%A Karpytchev, M.
%A Ballu, V.
%A Becker, M.
%A Grall, C.
%A Goodbred, S.
%A Calmant, Stéphane
%A Shum, C. K.
%A Khan, Z.
%T Present-day subsidence in the Ganges-Brahmaputra-Meghna delta : eastern amplification of the Holocene sediment loading contribution
%D 2019
%L fdi:010077054
%G ENG
%J Geophysical Research Letters
%@ 0094-8276
%K land subsidence ; sediment loading ; relative sea level rise ; Ganges-Brahmaputra-Meghna Delta
%K INDE ; BANGLADESH
%K GANGES BRAHMAPUTRE MEGHNA DELTA ; BENGALE GOLFE
%M ISI:000489485000001
%N 9
%P 10764-10772
%R 10.1029/2019gl083601
%U https://www.documentation.ird.fr/hor/fdi:010077054
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers20-11/010077054.pdf
%V 46
%W Horizon (IRD)
%X The subsidence of the Ganges-Brahmaputra-Meghna Delta (GBMD) drastically increases the adverse impacts of coastal flooding and exacerbates the vulnerability of populations from ongoing rapid sea level rise. We focus here on estimating the present-day subsidence rates induced by the loading of sediments continuously deposited within the GBMD over the past 11,000 years. By constructing a realistic GBMD 3-D numerical model with laterally variable mantle and lithospheric structure, we demonstrate for the first time that the presence of the strong Indian Craton and the weakened Indo-Burma margin results in significant amplification of subsidence driven by sediment loading in the eastern part of the delta, where the population density is the highest (>1,000 habitants per km(2)). Although uncertainties remain regarding the amplitude of subsidence, the rate estimates (2-3 mm/year) are found to be comparable to the present-day global mean sea level rise.
%$ 064