@article{fdi:010069522,
  title = {{S}easonal modulation of {M}2 tide in the {N}orthern {B}ay of {B}engal},
  author = {{T}azkia, {A}. {R}. and {K}rien, {Y}. and {D}urand, {F}abien and {T}estut, {L}aurent and {I}slam, {A}kms and {P}apa, {F}abrice and {B}ertin, {X}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {N}orthern {B}ay of {B}engal ({B}o{B}) with its adjoining {G}anges-{B}rahmaputra-{M}eghna delta ({GBM}) forms the largest deltaic region in the world. {I}t is surrounded by a wide area of low-lying land (less than a few meters above mean sea level), very densely populated. {I}t is home to a strong variability of sea level, across all timescales, with ample tides and frequent storm surges. {I}t is also subject to extended river flooding during the monsoon season, with frequent overflows of two of the world's largest rivers ({B}rahmaputra and {G}anges). {T}here is thus a need to understand and predict the various mechanisms responsible for coastal and estuarine water level variability in this area. {I}n this study, we address one of the least understood facets of this variability: the low-frequency modulation of tides. {W}e focus on the seasonal changes of amplitude of the semi-diurnal lunar tide, {M}2. {I}t is found that {M}2 amplitude shows marked changes between winter and summer seasons (of order 10 cm), incommensurate with most of the world's coastal ocean. {W}e observe contrasted patterns from the open areas of the coastal ocean to the inner part of the {GBM} estuary. {I}n the coastal ocean and over most of the {GBM} delta, {M}2 amplitude is stronger during summer and decreases until winter. {C}onversely, in the far northern part of {GBM} estuary, {M}2 amplitude is stronger during winter and weaker during summer. {W}e make use of a hydrodynamic barotropic tidal model to decipher the processes responsible for this evolution. {I}t is found that throughout the coastal ocean and over most of the {GBM} delta, this evolution is driven by frictional effects, with a seasonal modulation of bottom dissipation of tidal energy. {O}ur simple barotropic model, however, does not capture the observed range of seasonal modulation of tides in the {GBM} estuary and at its mouth. {O}ur study advocates for a careful consideration of these processes for a proper representation of the tidal dynamics as well as of the flooding hazard in the {B}engal delta.},
  keywords = {{M}2 tide ; {B}engal delta ; {BENGALE} {GOLFE} ; {BANGLADESH} ; {GANGE} ; {BRAHMAPOUTRE} ; {MEGHANA}},
  booktitle = {},
  journal = {{C}ontinental {S}helf {R}esearch},
  volume = {137},
  numero = {},
  pages = {154--162},
  ISSN = {0278-4343},
  year = {2017},
  DOI = {10.1016/j.csr.2016.12.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069522},
}