of;
Geography,;
East;
China;
Normal;
University,;
Shanghai;
200062,;
China;
Geological;
Survey,;
Shanghai;
200072,;
China;
Key;
Laboratory;
of;
Estuarine;
and;
Coastal;
Research,;
Shanghai;
200062,;
China;
水下三角洲; 磁学性质; 机制; 长江; 沉积环境演化; 海平面上升; 河口沉积物; 铁磁性矿物;