Earth's gravitational field - Seismic tomography resolves the enigma of the Laurentian anomaly

Details Earth's gravitational field - Seismic tomography resolves the enigma of the Laurentian anomaly Earth's gravitational field - Seismic tomography resolves the enigma of the Laurentian anomaly

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1555p&link_type=abstract

Geophysical Research Letters (ISSN 0094-8534), vol. 19, no. 15, Aug. 3, 1992, p. 1555-1558.

Physics

32

Earth Gravitation, Earth Mantle, Gravitational Fields, Gravity Anomalies, Seismology, Geoids, Hudson Bay (Canada), Sea Level

Scientific paper

The large negative free air gravity anomaly over Hudson Bay has usually been interpreted as due to existing imbalance associated with the glacial isostatic adjustment process. Here, the newly available ICE-3G deglaciation model is used to determine the extent to which the deglaciation hypothesis is viable. It is demonstrated that the negative free air anomaly over Hudson Bay is not due to glacial isostatic disequilibrium but rather to the influence of large scale mantle convection.

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