Key Laboratory of Marine Ecosystem and Biogeochemistry;
State Oceanic Administration;
Second Institute of Oceanography;
Ministry of Natural Resources;
Hangzhou 310012;
China;
State Key Laboratory of Satellite Ocean Environment Dynamics;
Hangzhou 310012;
China;
Alfred Wegener Institute;
Helmholtz Center for Polar and Marine Research;
Bremerhaven 27568;
Germany;
northern; Bering; Sea; Chukchi; Sea; organic; matter; GDGTs; bulk; parameters;