作者单位:Wenli Sun,Yuxin Ma,Guorui Zhang,Zhenxing Hu(School of Earth Sciences,Lanzhou University,Lanzhou,730000,China)Yi Liu(China University of Geosciences,Beijing,10083,China)Shuo Chen,Jiyong Li(Institute of Oceanology,Chinese Academy of Sciences,Qingdao,266071,China)