Comparison of SARAL and Jason-1/2 altimetry-derived geoids for geophysical exploration over the Indian offshore. Issue 2 (7th February 2016)

• Record Type: Journal Article
• Authors: Chander, S.; Majumdar, T.J.
• Is Part Of: Geocarto international. Volume 31:Issue 2(2016)
• Page Start: 158
• Page End: 175
• Publication Date: 2016-02-07
• Subjects: SARAL -- Jason-1/2 -- geoidal low -- hydrocarbon prospecting -- Bombay high -- 85°E ridge -- Bay of Bengal -- high-resolution geoids; Remote sensing -- Periodicals; Geographic information systems -- Periodicals; Geology -- Periodicals; Cartography -- Periodicals; 621.3678
• DOI: 10.1080/10106049.2015.1041562
• Languages: English
• ISSNs: 1010-6049

Abstract

Abstract : Satellite with ARgos and ALtika (SARAL) altimeter includes the ALTIKA payload, a 35.75 GHz Ka band radar altimeter. High pulse repetition frequency of SARAL (4 KHz) satellite provides better along-track information. Jason-1/2 data have been extensively utilized as a follow-up of TOPEX/Poseidon altimeter data for its accurate measurements of the sea surface heights, particularly for geodetic mission of Jason-1. In this study, we have compared SARAL and Jason-1/2 altimetry-derived classical and residual geoids over the Indian offshore using Rapp's, EGM96 and EGM08 gravity model coefficients, which are of interest for better understanding of geological and structural evolution/interpretation. SARAL and Jason-1/2 data have also been used over the two prominent geological features over the Indian offshore, namely the Bombay High in the western offshore and the 85°E Ridge in the Bay of Bengal. The SARAL altimetry-derived geoids could delineate these major geological/structural features with distinct residual geoidal lows.