HLY-08-02 Raw 75 KHz ADCP Data [Ashjian/LDEO]

This dataset includes data from the 75 KHz ADCP system onboard the US Coast Guard Cutter Healy during the BEST 2008 0802 (late spring) cruise. The ADCP system measures currents in the depth range from about 30 to 300 m in good weather. In bad weather or in ice, the range is less, and sometimes no valid measurements are made. The individual data files have been collected into tar files by day according to the sequence number. The following is the list of file extensions and their meaning of the data files contained in the tar files: ENR - Raw Binary ADCP Data ENS - Binary ADCP Data ENX - Binary Ensemble Data STA - Short Term Averaged Data LTA - Long Term Averaged Data N1R - Raw NMEA ASCII Data N2R - Raw NMEA ASCII Data NMS - Averaged Nav Data本数据集涵盖美国海岸警卫队希利号破冰船在BEST 2008 0802（晚春）航次中搭载的75 kHz声学多普勒流速剖面仪（ADCP）采集的数据。 该ADCP系统在天气状况良好时，可测量30米至300米深度范围内的海流；当遭遇恶劣天气或存在海冰时，有效测量范围会缩小，部分情况下甚至无法获取有效测量数据。 单个数据文件已按日期与序列号整理，打包为tar格式文件。 下述为tar文件中包含的数据文件扩展名及其对应含义： ENR：原始二进制ADCP数据 ENS：二进制ADCP数据 ENX：二进制测量组（Ensemble）数据 STA：短期平均数据 LTA：长期平均数据 N1R：原始NMEA（美国国家海洋电子协会，National Marine Electronics Association）ASCII数据 N2R：原始NMEA ASCII数据 NMS：平均导航数据