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Tentative Model of Crustal Structure of the Central Indian Ocean Deformation as Inferred from Spectral and Werner Deconvolution Techniques of Magnetic Data


Affiliations
1 Department of Geophysics, Andhra University, Visakhapatnam 530 003, India
2 Indian Institute of Geomagnetism, Kalamboli Highway, New Panvel, New Mumbai 410 218, India
3 Department of Earth Sciences, Kerala University of Fisheries and Ocean Studies, Panangad, Cochin 682 506, India
 

Nine total magnetic profiles in the S–N direction of the Central Indian Ocean (CIO) have been interpreted with spectral and Werner deconvolution techniques to obtain approximate depths to shallow (magnetic basement) and deeper (Curie isotherm) interfaces of the oceanic crust. From these preliminary depths, tentative crustal models for all these nine profiles are prepared. These tentative models of the area show varying thickness of the oceanic crust, supporting the deformation history. It is inferred from these tentative models that deformation extends beyond the zone identified south of 8°S latitude. There is good agreement between the spectral and Werner deconvolution depths.

Keywords

Deformation Zone, Deconvolution Techniques, Magnetic Anomaly, Oceanic Crust, Tentative Model.
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  • Tentative Model of Crustal Structure of the Central Indian Ocean Deformation as Inferred from Spectral and Werner Deconvolution Techniques of Magnetic Data

Abstract Views: 274  |  PDF Views: 144

Authors

R. Divya Bharathi
Department of Geophysics, Andhra University, Visakhapatnam 530 003, India
M. Subrahmanyam
Department of Geophysics, Andhra University, Visakhapatnam 530 003, India
D. S. Ramesh
Indian Institute of Geomagnetism, Kalamboli Highway, New Panvel, New Mumbai 410 218, India
S. Rajendran
Department of Earth Sciences, Kerala University of Fisheries and Ocean Studies, Panangad, Cochin 682 506, India

Abstract


Nine total magnetic profiles in the S–N direction of the Central Indian Ocean (CIO) have been interpreted with spectral and Werner deconvolution techniques to obtain approximate depths to shallow (magnetic basement) and deeper (Curie isotherm) interfaces of the oceanic crust. From these preliminary depths, tentative crustal models for all these nine profiles are prepared. These tentative models of the area show varying thickness of the oceanic crust, supporting the deformation history. It is inferred from these tentative models that deformation extends beyond the zone identified south of 8°S latitude. There is good agreement between the spectral and Werner deconvolution depths.

Keywords


Deformation Zone, Deconvolution Techniques, Magnetic Anomaly, Oceanic Crust, Tentative Model.



DOI: https://doi.org/10.18520/cs%2Fv119%2Fi9%2F1526-1539