The variations in atmospheric radiocarbon (14C) concentration during the last 50 000 years can be attributed to changes in the 14C production rate (due to changes in solar activity, the geomagnetic field and/or interstellar ...
A distinct peak has been discovered in the 36Cl data from the GRIP ice core between the Dansgaard Oeschger (D-O) events 6 and 7 at approximately 32 kyr BP. This peak can be attributed to a minimum of the geomagnetic dipole ...