Temperature profiles from XBT casts from the DOLPHIN as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 08 November 1974 to 14 November 1974 (NODC Accession 7500079)

Temperature profiles were collected from XBT casts from the DOLPHIN from 08 November 1974 to 14 November 1974. 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 450 m or 760 m. Special instruments permitted measurements to 1830 m.

1974年11月8日至14日期间，通过“海豚号（DOLPHIN）”科考船的投弃式温深仪（XBT）剖面观测，获取了温度剖面数据。该数据由美国国家海洋渔业局（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）项目的一部分采集完成，后由美国国家海洋数据中心（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。每一条观测记录均包含航次信息、观测位置、日期与时间。数据记录由多组温度-深度数值对构成。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。

标准型XBT可获取最大深度达450米或760米的温度剖面，特制XBT则可实现最大1830米的深度测量。