Abstract:

Abundant under-way velocity data in polar scientific expeditions of China have been accumulated ever since ice-breaker "Xuelong" was mounted the Shipboard-ADCP. It is very important for ocean current study in the Southern Ocean and adjacent sea area of Antarctica to derive current information from under-way ADCP data. Based on disturbance factor analysis,the approach of data processing of Shipboard-ADCP in polar scientific expeditions of China is presented.Several steps are vital for data processing and they are data quality examination,adjustment of time consistency,emendation of ship heading,ship speed elimination.The current data can be achieved only after these steps are accomplished well and truly.