Temperature profile data collected using XBTs from the HAKONE MATRU from the Pacific Ocean during the Thermal Structure Monitoring Program in the Pacific (TRANSPAC) project, 09 March 1977 to 19 March 1977 (NODC Accession 8100282)

Temperature profile data were collected using bathythermograph (BT/XBT) casts from HAKONE MATRU in the Pacific Ocean from March 9, 1977 to March 19, 1977. Data were submitted by Scripps Institution of Oceanography as part of the Thermal Structure Monitoring Program in the Pacific (TRANSPAC) project. Data were processed by NODC to the NODC standard Universal Bathythermograph Output (UBT) format. Full BT descriptions are available at http://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 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.1977年3月9日至3月19日，科研人员于太平洋海域的“HAKONE MATRU”号科考平台上，通过温深计（bathythermograph，BT/XBT）走航观测采集得到温度剖面数据。该数据集由斯克里普斯海洋研究所（Scripps Institution of Oceanography）提交，作为太平洋热结构监测项目（TRANSPAC，Thermal Structure Monitoring Program in the Pacific）的组成部分。美国国家海洋数据中心（NODC）已将该数据处理为其标准的通用温深计输出（Universal Bathythermograph Output，UBT）格式。完整的温深计设备说明可通过以下网址获取：http://www.nodc.noaa.gov/General/NODC-Archive/bt.html。 UBT格式存储了通过投弃式温深计（expendable bathythermograph，XBT）仪器获取的温度-深度剖面数据。每条观测记录均附带科考航次信息、观测位置、观测日期与时间。数据记录由温度-深度值对构成。与MBT数据文件不同——MBT数据文件以均匀5米间隔记录温度值——XBT数据文件的温度值对应非均匀深度，其采样点仅包含精准刻画温度曲线所需的最少数量的“拐点”。标准型XBT可获取深度达450米或760米的温度剖面，搭配专用仪器时，测量深度可达1830米。