Temperature profiles from XBT casts from the SAMPLE and other platforms as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 12 June 1979 to 18 August 1979 (NODC Accession 7900238)

Temperature profiles were collected from XBT casts from the SAMPLE and other platforms from 12 June 1979 to 18 August 1979. Data were collected by the National Marine Fisheries Service (NMFS) and other institutions as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project. Data were processed by NODC to the NODC standard Universal Bathythermograph Output (UBT) format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/bt.html.

The UBT format contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data records are comprised of pairs of temperature-depth values. The XBT data files contain temperature values at non-uniform depths. These depths were recorded at the minimum number of points (''''inflection points'''') required to accurately define the temperature curve. Standard XBTs can obtain profiles to depths of either 450 or 760 m. Special instruments permitted measurements to be obtained to 1830 m.

1979年6月12日至1979年8月18日期间，科研人员通过SAMPLE平台及其他平台开展抛投式海水温深仪（expendable bathythermograph, XBT）测次，采集得到温度廓线数据。本数据集由美国国家海洋渔业服务局（National Marine Fisheries Service, NMFS）及其他科研机构，作为海洋资源监测、评估与预报（Marine Resources Monitoring, Assessment and Prediction, MARMAP）项目的一部分采集所得。数据已由美国国家海洋数据中心（National Oceanographic Data Center, NODC）处理为符合NODC标准的通用温深仪输出（Universal Bathythermograph Output, UBT）格式。完整的格式说明可通过NODC官网的http://www.nodc.noaa.gov/General/NODC-Archive/bt.html页面获取。

通用温深仪输出（UBT）格式包含通过抛投式海水温深仪（XBT）采集得到的温度-深度廓线数据。每条观测记录均附带航次信息、观测位置、观测日期与时间戳。数据记录由多组温度-深度数值对构成。本XBT数据集内的温度值对应非均匀分布的深度，这些深度仅记录了精准刻画温度曲线所需的最少测点，即“拐点（inflection points）”。标准型XBT可获取的最大探测深度为450米或760米，特殊定制的XBT设备则可实现最大1830米深度的探测。