On the probable nature of magnetic anomalies in the Atlantic Rift Zone

Details On the probable nature of magnetic anomalies in the Atlantic Rift Zone On the probable nature of magnetic anomalies in the Atlantic Rift Zone

Sep 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971pepi....4..381s&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 4, Issue 5, p. 381-405.

Physics

1

Scientific paper

An interpretation of magnetic surveys in the Atlantic Rift Zone is carried out using the method of analytic continuation of the field. The basic results are the following: (1)|Observed aeromagnetic fields are of complex interferential nature and of heterogeneous structure. (2)|When continued down to a depth of 1-2 km, there are no large ``non-disintegrating'' anomalies which might testify to the presence of large and homogeneously magnetized bodies at great depths. (3)|The ΔTa field structure is to a great extent determined by the bottom depth. (4)|Local anomaly amplitudes decrease exponentially with increasing depth 4-6 times per km on the average. (5)|Linearity of anomalies is slightly expressed within our sectors; local anomalies do not correlate on the profiles. (6)|Field sources appear to be located close to the sea bottom- and they are extremely non-uniform. Normally and reversely magnetized bodies are present.

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