Geomagnetic Modulation of the 36Cl Flux in the GRIP Ice Core Greenland Baumgartner, S. ; Beer, J. ; Masarik, J. ; Wagner, G. ; Meynadier, L. ; Synal, H. -A. Abstract Publication: Science Pub Date: February 1998 DOI: 10.1126/science.279.5355.1330 Bibcode: 1998Sci...279.1330B