Temperature profile data collected using XBTs from the KASHU MARU from the Pacific Ocean during the Thermal Structure Monitoring Program in the Pacific (TRANSPAC) project, 18 April 1977 to 25 April 1977 (NODC Accession 8100132)

Temperature profile data were collected using bathythermograph (BT/XBT) casts from KASHU MARU in the Pacific Ocean from April 18, 1977 to April 25, 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.本数据集收录了1977年4月18日至4月25日期间，"香丸"号（KASHU MARU）在太平洋海域通过温深计（bathythermograph, BT/XBT）走航观测获取的温度剖面数据。该数据由斯克里普斯海洋研究所（Scripps Institution of Oceanography）作为太平洋热结构监测计划（TRANSPAC）的组成部分提交。数据由美国国家海洋数据中心（NODC）处理为统一温深计输出（Universal Bathythermograph Output, UBT）标准格式。温深计的完整说明可通过以下链接查阅：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）获取的温度-深度剖面数据。每条观测记录均包含航次信息、观测位置、观测日期与时间。数据记录由温度-深度值对构成。与以5米等间隔记录温度值的MBT数据文件不同，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测点，即拐点（inflection points）。标准XBT可获取深度达450米或760米的温度剖面；若配备专用仪器，测量深度可达1830米。