Current velocity from PALACE float IOS578A

Velocity algorithm: backward differencing. Data have been checked by the WOCE Subsurface Float Data Assembly Center. See hdl:10013/epic.32931.d001 for further information.速度算法采用向后差分法。所有数据均经世界海洋环流实验（World Ocean Circulation Experiment, WOCE）水下浮标数据组装中心核验。如需获取进一步详细信息，请参阅标识符hdl:10013/epic.32931.d001。