Volcanic Eruptions: Contribution to Magnetism in Deep-Sea Sediments Downwind from the Azores

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Science  20 Jun 1975:
Vol. 188, Issue 4194, pp. 1203-1205
DOI: 10.1126/science.188.4194.1203


The mean bulk magnetic susceptibility (x) and the intensity of remanent magnetization (J) of deep-sea sediments vary systematically, but in an opposite sense, for a distance of 600 kilometers downwind from the Azores. Beyond the distance both J and x diminish for at least another 600 kilometers. The dominant type of magnetic particle in the sediments is interpreted to be atmospherically transported volcanic dust.