Ravi Ande
Department of Fabric and Apparel Sciences, University Of Delhi, New Delhi, India
Publications
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Research Article
Seismo-Tectonics, Crustal Velocity Structure and Moho Depth Beneath the Dharwar Craton, India
Author(s): Ravi Ande*
The cross-correlation of continuous ambient noise data gathered from 35 broad-band seismographs over 18 months (February 2019 to August 2021), we produce Rayleigh-wave group velocity maps in the 5–28 s range. We supplement this with longer period data (40–70 s) from the earthquake source. Combining combined group velocity measurements with the tele-seismic receiver functions gathered at 50 stations—15 of which were operational from 1998 to 2012—was necessary to construct a shear velocity image of the crust. The crustal thickness of the late Archean (2.7 Ga) Eastern Dharwar Craton (EDC) is 34–38 km, but the crustal thickness of the mid-Archean and Proterozoic terrains is 40–50 km. The Western Dharwar Craton (WDC) is located 50 km away in the mid-Archean (3.36 Ga) greenstone region, which has the thickest crust. The average crustal velocity beneath th.. Read More»

