Show simple item record

dc.contributor.authorSarma, K.V.L.N.S.
dc.contributor.authorRamana, M.V.
dc.contributor.authorRamprasad, T.
dc.contributor.authorDesa, M.
dc.contributor.authorSubrahmanyam, V.
dc.contributor.authorKrishna, K.S.
dc.contributor.authorRao, M.M.M.
dc.date.accessioned2008-08-05T11:31:38Z
dc.date.available2008-08-05T11:31:38Z
dc.date.issued2002
dc.identifier.citationMarine Geophysical Researches, Vol. 23(2); 97-108p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/1368
dc.description.abstractAnalyses of about 6000 km of processed magnetic data in the central Bay of Bengal using Analytical Signal Processing and Werner Deconvolution techniques revealed that the depth to top of the magnetic basement varies between 5 and 12 km from the sea surface, where the water column thickness is about 3.4 km. These inferred depths are comparable to the reported acoustic basement depths. The basement map derived from magnetic interpretation defines the general configuration of the central Bay of Bengal. The N10-12 degrees W trending subsurface 85 degrees E Ridge buried under 2 to 3 km thick sediments is a prominent tectonic feature. Offshore basins characterised by deeper magnetic basement (approx. 9 km) and 100-200 km wide are present on either sides of the ridge. These basins were filled with 6-8 km thick lower Cretaceous to recent sediments. Integrated geophysical study depicts that the magnetic basement is characterised by NW-SE, NE-SW, NNE-SSW, N10-12 degrees W and E-W trending structural features that are associated with the lower Cretaceous ocean floor. The Analytical Signal Processing and Werner Deconvolution techniques proved to be effective in determining the depth to the basement in area covered by thick sediment overburden and characterized by a complex geologic/tectonic framework.
dc.language.isoen
dc.publisherKluwer
dc.rightsKluwer
dc.subjectmagnetism
dc.subjectsignal processing
dc.subjecttectonics
dc.subjectmagnetic data
dc.subjectbathymetric data
dc.titleMagnetic basement in the central Bay of Bengal
dc.typeJournal Article


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record