Schneider David A. author Columbia University. Lamont-Doherty Earth Observatory Kent Dennis V. author Columbia University. Lamont-Doherty Earth Observatory Columbia University. Lamont-Doherty Earth Observatory originator text Articles 1988 English Paleomagnetic data from 89 equatorial deep-sea sediment cores indicate that the configuration of the time-averaged geomagnetic field depends strongly on polarity state but that it remains within 1 degree of axial symmery throughout the Pliocene and Pleistocene (last 5 million years). The relative magnitude of the nondipole field was greater by almost a factor of 2 during reverse than during normal polarity intervals. These results thus support earlier suggestions that there may be a standing (nonreversing) component of the geomagnetic dynamo. Geophysics 242 4876 252 256 10.1126/science.242.4876.252 http://hdl.handle.net/10022/AC:P:11961 NNC NNC 2011-12-12 15:31:42 -0500 2011-12-12 16:31:31 -0500 5948 eng