Open AccessGeophysical investigations in the Eastern Indian Ocean in cruise SO258/2 of RV Sonne (Germany)
Author(s) -
О. В. Левченко,
Wolfram Geissler
Publication year - 2019
Publication title -
okeanologiâ
Language(s) - English
Resource type - Journals
ISSN - 0030-1574
DOI - 10.31857/s0030-1574593513-516
Subject(s) - sonne , cruise , geology , bathymetry , ridge , seismology , depth sounding , echo sounding , structural basin , geophysics , geodesy , oceanography , geomorphology , paleontology
New geophysical data were obtained in 2017 in cruise #SO258/2 of RV Sonne in the Central Indian Basin between 81° and 84°E. Total length of collected geophysical profiles (bathymetry, seismoacoustic profiling, magnetometry, gravimetry) is about 6,500 miles. Deep seismic sounding was carried out along N-S profile by 375 m long, which extends on the land, and SW-NE profile by 340 m long. The main objectives of the research were to verify the existing kinematic/geodynamic models of separation of India from Antarctica, to determine drift rate of the Indian Plate, location of the continent-ocean transition zone south of Sri Lanka and structure of 85°E Ridge. The cruise was part of a project INGON performed by the Center for marine research, GEOMAR and the Institute for polar and marine research Alfred Wegener.