Three treatments,including oven drying , air drying and lyophilization are applied in the core (total length:21 cm,sampled from high tidal flat) and tidal flat surface (0～5 cm) sediment samples(high, middle and low tidal flat), and then the magnetic properties,water and total organic matter contents has been measured systematically.
对长江口南岸潮滩沉积物柱样和表层样品的烘干、风干和冻干法处理 ,然后进行系统磁性测量和水分、有机质的测定。