Geomagnetic and climatic variability reflected by 10Be during the Quaternary and late Pliocene

Details Geomagnetic and climatic variability reflected by 10Be during the Quaternary and late Pliocene Geomagnetic and climatic variability reflected by 10Be during the Quaternary and late Pliocene

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30f..34a&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 6, pp. 34-1, CiteID 1301, DOI 10.1029/2002GL016077

Physics

3

Global Change: Climate Dynamics (3309), Geodesy And Gravity: Ocean/Earth/Atmosphere Interactions (3339), Ionosphere: Solar Radiation And Cosmic Ray Effects, Interplanetary Physics: Solar Cycle Variations (7536), Geomagnetism And Paleomagnetism: Paleomagnetism Applied To Tectonics (Regional, Global)

Scientific paper

We present continuous 10Be data extending to 3.5 Ma that show strong response to the Earth's magnetic field shielding. We find a prominent enhancement in 10Be at geomagnetic reversals and in particular at the Brunhes/Matuyama geomagnetic boundary and several geomagnetic excursions during the Brunhes Chron. Similarity in 10Be fluxes of Holocene to Eemian period occurs during oxygen isotope stages 11 through 13. According to our data, climatic patterns of these periods may likely represent exception rather than the rule during the last million years. We suggest that the interplay between the geomagnetic field shielding and solar activity had effectively regulated paleoclimatic attenuation.

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