Temperature profiles from XBT casts from the DELTA SUD as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 14 October 1978 to 21 November 1978 (NODC Accession 7900155)

Temperature profiles were collected from XBT casts from the DELTA SUD from 14 October 1978 to 21 November 1978. Data were collected by the Delta Steamship Co. 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 450 m or 760 m. Special instruments permitted measurements to 1830 m.

1978年10月14日至1978年11月21日期间，从“德尔塔苏德”轮的投弃式温深仪（expendable bathythermograph, XBT）观测中获取温度剖面数据。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，数据由德尔塔轮船公司（Delta Steamship Co.）采集。数据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。完整格式说明可从美国国家海洋数据中心获取，网址为www.nodc.noaa.gov/General/NODC-Archive/bt.html。

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。每次观测均记录有航次信息、位置、日期与时间。数据记录由多组温度-深度值对构成。XBT数据文件中的温度值对应非均匀分布的深度，这些深度仅记录了精准刻画温度曲线所需的最少点数，即拐点（inflection points）。标准XBT可获取深度达450米或760米的温度剖面，特殊型号仪器则可实现深度达1830米的测量。