Sediment thickness in the Bay of Bengal and Andaman Sea compared with topography and geophysical settings by GMT

Polina Lemenkova (1)

1 IPE - Schmidt United Institute of Physics of the Earth [Moscow]

The study presents an analysis of the sediment thickness compared with bathymetric and geophysical settings in the Bay of Bengal and Andaman Sea, Indian Ocean. It uses a combination of the high-resolution data: topographic GEBCO, satellite and marine gravity anomalies, EGM2008 geoid and GlobSed to visualize the correlation between relief, gravity and trends in continent-ocean sediment transport. The results include thematic maps and 3D model showing increased sediment thickness in the Bengal Fan (8,0 to 8,2 km) in NE direction with maximum in Ganges Fan (16,2 km), and southward decrease in the Andaman Sea from Irrawaddy river mouth (6-7 km) to the Strait of Malacca (1-2 km). All maps and 3D model have been plotted by Generic Mapping Tools (GMT) cartographic scripting toolset version 6.0.0.

Mots clés: Andaman Sea; Bay of Bengal; cartography; sediment thickness

Domaines: Sciences de l'environnement; Environnement et Société; Océanographie; Hydrologie; Géochimie; Informatique [cs]; Apprentissage [cs.LG]; Recherche d'information [cs.IR]; Synthèse d'image et réalité virtuelle [cs.GR]; Vision par ordinateur et reconnaissance de formes [cs.CV]; Algorithme et structure de données [cs.DS]; Logique en informatique [cs.LO]; Milieux et Changements globaux; Modélisation et simulation; Ingénierie de l'environnement; Planète et Univers [physics]; Océan, Atmosphère; Interfaces continentales, environnement; Sciences de la Terre; Géologie appliquée; Géophysique [physics.geo-ph]

Polina Lemenkova. Sediment thickness in the Bay of Bengal and Andaman Sea compared with topography and geophysical settings by GMT. Ovidius University Annals Series: Civil Engineering, 2020, 22, pp.13-22. ⟨10.2478/ouacsce-2020-0002⟩. ⟨hal-03108158⟩