Magnetic surveys of the continental shelf off Visakhapatnam

T.C.S. Rao, K.S.R. Murthy


Continuous magnetic surveys over the continental shelf off Visakhapatnam reveal total magnetic field anomalies of high amplitude and short period over the inner shelf and of comparatively low amplitude with long period over the mid shelf and outer shelf. Quantitative estimates made for the anomalies over the inner shelf using the graphical method and by computing the analytical signal suggest the existence of a fault in the nearshore region and a possible zone of heavy mineral concentration off Bhimunipatnam


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