Temperature profiles from XBT casts from the SANTA CRUZ and other platforms as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 01 September 1972 to 05 November 1972 (NODC Accession 7201439)

Temperature profiles were collected from XBT casts from the SANTA CRUZ and other platforms from 01 September 1972 to 05 November 1972. Data were collected by the Delta Steamship Company 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 450 m or 760 m. Special instruments permit measurements to 1830 m.

1972年9月1日至1972年11月5日期间，研究团队从“圣克鲁兹号（SANTA CRUZ）”及其他平台的投弃式温深仪（expendable bathythermograph, XBT）剖面观测中获取了温度剖面数据。该批数据由Delta Steamship Company及其他机构作为海洋资源监测、评估与预测（Marine Resources Monitoring, Assessment and Prediction, MARMAP）项目的一部分采集。数据由NODC处理为NODC标准通用温深仪输出（Universal bathythermograph Output, UBT）格式。完整格式说明可从NODC官网www.nodc.noaa.gov/General/NODC-Archive/bt.html获取。

通用温深仪输出（UBT）格式包含通过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、日期与时间。数据记录由成对的温度-深度数值组成。XBT数据文件中的温度值对应非均匀分布的深度，这些深度仅记录了精准刻画温度曲线所需的最少数量的“拐点（inflection points）”。

标准型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1830米深度的测量。