Temperature profiles from XBT casts from the GALLATIN and other platforms as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 27 July 1978 to 01 September 1978 (NODC Accession 7800779)

Temperature profiles were collected from XBT casts from the GALLATIN and other platforms from 27 July 1978 to 01 September 1978. Data were collected by the National Marine Fisheries Service (NMFS) 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.

1978年7月27日至1978年9月1日期间，通过“加拉廷”号（GALLATIN）及其他观测平台的投弃式温深仪（Expendable Bathythermograph, XBT）投放获取了温度剖面数据。该数据由国家海洋渔业局（National Marine Fisheries Service, NMFS）作为海洋资源监测、评估与预测（Marine Resources Monitoring, Assessment and Prediction, MARMAP）项目的一部分收集完成。国家海洋数据中心（National Oceanographic Data Center, NODC）将数据处理为符合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https://www.nodc.noaa.gov/General/NODC-Archive/bt.html 获取。

UBT格式包含通过投弃式温深仪（XBT）获取的温度-深度剖面数据。每份观测记录均包含航次信息、观测位置、日期与时间。数据记录由温度-深度值对组成。XBT数据文件中的温度值对应非均匀分布的深度，这些深度以精准刻画温度曲线所需的最少点数——即“拐点（inflection points）”——进行记录。标准XBT可获取的剖面最大深度为450米或760米，特殊型号仪器则可实现1830米深度的测量。