Department of Oceanology;
Xiamen University;
Xiamen 361005;
China;
College of Marine Geosciences;
Ocean University of Qingdao;
Qingdao 266003;
China;
Lanzhou Institute of Geology;
CAS;
Lanzhou 730000;
China;
The western Pacific Ocean; δ^(18)O; δ^(3)He; distribution; mixing;