Open AccessGeomagnetic induction and conductive structures in north‐west India
Author(s) -
Arora B. R.,
Lilley F. E. M.,
Sloane M. N.,
Singh B. P.,
Srivastava B. J.,
Prasad S. N.
Publication year - 1982
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1982.tb04960.x
Subject(s) - foothills , geology , earth's magnetic field , seismology , structural basin , paleontology , magnetometer , geophysics , physical geography , geography , magnetic field , cartography , physics , quantum mechanics
Summary Magnetic disturbance events and quiet daily variation as recorded by the 1979 magnetometer array study in north‐west India are analysed for evidence of electrical conductivity structures in the region. Contour maps of Fourier transform parameters are presented, and the disturbance event data are also reduced to sets of real and quadrature Parkinson arrows over a range of periods. A variety of conductive structures in the area are mapped, including some relatively shallow ones thought to be caused by sediments, as in the Ganga basin. More information is obtained on a major conductivity structure which strikes perpendicular to the Ganga basin into the foothills of the Himalayas; a second major conductivity structure is detected to lie to the west of the array area, and may be associated there with some aspect of the suture zone of India and Asia.