@article{fdi:010037934,
  title = {{O}n the weak impact of the 26 {D}ecember {I}ndian {O}cean tsunami on the {B}angladesh coast},
  author = {{I}oualalen, {M}ansour and {P}elinovsky, {E}. and {A}savanant, {J}. and {L}ipikorn, {R}. and {D}eschamps, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he 26 {D}ecember 2004 {I}ndian {O}cean tsunami damaged severely most of the {G}ulf of {B}engal's coastal areas, but the coast of {B}angladesh which stands at the edge of an extraordinarily extended continental shelf. {T}his latter feature has been built through huge discharges of river sediments along the {B}rahmaputra and {G}anges rivers. {A}s a result of this enormous discharge, another interesting feature of the area is the deep underwater {C}anyon, connected with the estuaries, running {NE}-{SW} from 25 km off the coast towards the continental slope. {W}e investigate here how these two geological features may have modified/perturbed the {I}ndian ocean tsunami propagation and impact on the {C}oast of {B}angladesh. {F}or that purpose we have realized an ensemble of numerical simulations based on {F}unwave {B}oussinesq numerical model and a validated coseismic source. {I}t is found, at first order, that the extended shallow bathymetric profile of the continental shelf plays a key role in flattening the waveform through a defocussing process while the {C}anyon delays the process. {T}he wave evolution seems to be related at first order to the bathymetric profile rather than to dynamical processes like nonlinearity, dispersion or bottom friction.},
  keywords = {},
  booktitle = {},
  journal = {{N}atural {H}azards and {E}arth {S}ystem {S}ciences},
  volume = {7},
  numero = {1},
  pages = {141--147},
  ISSN = {1561-8633},
  year = {2007},
  URL = {https://www.documentation.ird.fr/hor/fdi:010037934},
}