Temperature profiles from XBT casts from the OLEANDER as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 1982-06-11 (NODC Accession 8200127)

Temperature profiles were collected from XBT casts from the OLEANDER from 11 June 1982. 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.

1982年6月11日，从"OLEANDER"号科考船的投弃式温深仪（expendable bathythermograph, XBT）投放剖面中采集得到温度剖面数据。本数据集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）项目的一部分采集获取。数据已由美国国家海洋数据中心（National Oceanographic Data Center, NODC）处理为NODC标准通用温深仪输出（Universal Bathythermograph Output, UBT）格式。完整格式说明可通过NODC官网（www.nodc.noaa.gov/General/NODC-Archive/bt.html）查阅获取。

UBT格式存储了通过投弃式温深仪（XBT）获取的温度-深度剖面数据。每条观测记录均附带航次信息、观测位置、观测日期与时间。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水深测点，这些水深点位为准确刻画温度曲线所需的最少测点（即"拐点"）。标准型XBT可获取深度达450米或760米的温度剖面，特殊定制仪器则可实现1830米水深的测量。