Physics
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..659m&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 5, p. 659-662
Physics
25
Beryllium Isotopes, Galactic Cosmic Rays, Geomagnetism, Gulf Of California (Mexico), Lakes, Sediments, Supernovae, Aluminum, Anomalies, Antarctic Regions, Dipole Moments, Geochronology, Paleomagnetism
Scientific paper
The cosmogenic isotope Be-10, total Be,and Al were measured in partly varved sediments from the upper 50m of core 480, leg 64 Deep Sea Drilling Project (DSDP), Gulf of California. The concentration of Be-10 from 1 to 50 kyr is in general agreement with estimates of the geomagnetic dipole moment obtained from archaeomagnetic and marine core research. Be-10 anomalies were also found at 32 kyr and 43 kyr, contemporaneous with the Mono Lake and Laschamp excursion, to be produced by a combination of decreased geomagnetic field and unprecedented long-term solar activity. We conclude that the cause is a change in the galactic cosmic-ray flux consistent with a supernova event. The coincidence with the two excursions remains a paradox.
Damon Paul E.
Donahue Douglas J.
McHargue Lanny R.
No associations
LandOfFree
Enhanced cosmic-ray production of Be-10 coincident with the Mono Lake and Laschamp geomagnetic excursions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Enhanced cosmic-ray production of Be-10 coincident with the Mono Lake and Laschamp geomagnetic excursions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced cosmic-ray production of Be-10 coincident with the Mono Lake and Laschamp geomagnetic excursions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-885722