Iron supply from the marginal seas and its influence on biological production in the North Pacific Ocean

Jun Nishioka, Hokkaido University, Institute of low temperature science, Sapporo, Japan, Hajime Obata, Univ Tokyo, Kashiwa, Japan, Toru Hirawake, Hokkaido University, Faculty of Fisheries Sciences, Hakodate, Japan and Ichiro Yasuda, AORI, University of Tokyo, Kashiwa, Japan