WATER TEMPERATURE and other data from USCGC GLACIER from 1979-11-16 to 1980-03-22 (NCEI Accession 8000248)

Data has been processed by NODC to the NODC standard Bathythermograph (XBT) (C116) format.

The C116/C118 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 record was comprised of pairs of temperature-depth values. Unlike the MBT Data File, in which temperature values were recorded at uniform 5 m intervals, the XBT data files contained 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. With special instruments, measurements can be obtained to 1830 m. Prior to July 1994, XBT data were routinely processed to one of these standard types. XBT data are now processed and loaded directly in to the NODC Ocean Profile Data Base (OPDB). Historic data from these two data types were loaded into the OPDB.

数据已由NODC（国家海洋和大气管理局海洋数据中心）按照C116/C118标准格式（水听温深计[XBT]格式）进行处理。C116/C118格式包含使用可抛式水听温深计（XBT）仪器获取的温度-深度剖面数据。对于每个观测点，均报告了航次信息、位置、日期和时间。数据记录由温度-深度值对组成。与MBT数据文件不同，其中温度值以均匀的5米间隔记录，XBT数据文件包含非均匀深度的温度值。这些深度记录在最小数量的点上（“拐点”），以准确定义温度曲线。标准XBT能够获取至450米或760米的剖面。使用特殊仪器，测量可达1830米。在1994年7月之前，XBT数据通常被处理为这些标准类型之一。目前，XBT数据直接处理并加载到NODC海洋剖面数据库（OPDB）中。这两种数据类型的歷史数据已被加载到OPDB中。