publication . Article . 2000

Geomagnetic modulation of the late Pleistocene cosmic-ray flux as determined by 10Be from Blake Outer Ridge marine sediments

L. R. McHargue; Douglas J. Donahue; Paul E. Damon; C.P Sonett; D. Biddulph; George S. Burr;
Open Access
  • Published: 01 Oct 2000 Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, volume 172, pages 555-561 (issn: 0168-583X, Copyright policy)
  • Publisher: Elsevier BV
Abstract The cosmic-ray flux incident upon the Earth during the late Pleistocene, 20–60 kyr B.P., was studied by measuring the cosmogenic radionuclide 10 Be from a marine sediment core at site CH88-10P on the Blake Outer Ridge. The paleointensity of the geomagnetic field for this core was determined by various methods. The variance in the concentration of 10 Be in the authigenic fraction of the sediments from Blake Ridge closely correlates with the inverse of the variance in the paleointensity of the geomagnetic field. The 10 Be signal lags, up to 1000 years of sedimentation, the measured paleointensity of the sediments. In contrast, the data from several other ...
Persistent Identifiers
free text keywords: Nuclear and High Energy Physics, Instrumentation, Cosmic ray, Earth's magnetic field, Paleontology, Pleistocene, Authigenic, Geology, Sediment, Paleomagnetism, Ridge, geography.geographical_feature_category, geography, Flux
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