Department of Earth Science, University of Bergen, Allegt. 41, Bergen, 5007 Norway; 2 Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3 Canada
Department of Earth Science, University of Bergen, Allegt. 41, Bergen, 5007 Norway
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3 Canada
Scripps Institution of Oceanography, University of California, La Jolla, CA 92093-0225, USA
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3 Canada