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 22 May 1977 to 27 July 1977 (NODC Accession 7700593)

Temperature profiles were collected from XBT casts from the SANTA CRUZ and other platforms from 22 May 1977 to 27 July 1977. Data were collected by Grace Prudential Lines 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 either 450 or 760 m. Special instruments permitted measurements to be obtained to 1830 m.1977年5月22日至1977年7月27日期间，数据采集自SANTA CRUZ号及其他观测平台的投弃式温深仪（Expendable Bathythermograph, XBT）直投剖面。本次数据由Grace Prudential Lines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）项目的一部分收集。数据经美国国家海洋数据中心（National Oceanographic Data Center, NODC）处理为NODC标准的通用温深仪输出（Universal Bathythermograph Output, UBT）格式。完整的格式说明可从NODC官网的以下链接获取：www.nodc.noaa.gov/General/NODC-Archive/bt.html。 UBT格式包含通过投弃式温深仪获取的温度-深度剖面数据。每份观测记录均记载有航次信息、站位坐标、观测日期与时间。数据记录由温度-深度值对构成。XBT数据文件存储了非等间距深度下的温度值，这些深度以精准刻画温度曲线所需的最少测点（拐点）进行记录。标准型XBT可获取的剖面最大深度为450米或760米，特殊定制仪器则支持1830米深度的测量。