作者单位:Pengyuan Guo,Lei Ye,Jinju Liu,Yu Zhang(School of Earth Sciences,Lanzhou University,Lanzhou 730000,China)Yaoling Niu(Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Department of Earth Sciences,Durham University,Durham DH1 3LE,UK)Pu Sun(Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China)