Temperature profiles from XBT casts from the CALIFORNIAN and other platforms as part of the International Decade of Ocean Exploration (IDOE) from 01 August 1974 to 22 March 1975 (NODC Accession 7600615)

Temperature profiles were collected from XBT casts from the CALIFORNIAN and other platforms from 01 August 1974 to 22 March 1975. Data were collected by the National Marine Fisheries Service (NMFS) as part of the International Decade of Ocean Exploration (IDOE). 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 permit measurements to be obtained to 1830 m.1974年8月1日至1975年3月22日期间，研究人员通过加利福尼亚海域及其他平台的投弃式温深仪（XBT, expendable bathythermograph）投放作业获取了温度剖面数据。本数据集由美国国家海洋渔业服务处（NMFS, National Marine Fisheries Service）作为国际海洋勘探十年计划（IDOE, International Decade of Ocean Exploration）的组成部分采集完成，后由国家海洋数据中心（NODC）按照其制定的通用温深仪输出（UBT, Universal Bathythermograph Output）标准格式完成数据处理。完整的格式说明可通过NODC官网的该网址查阅：www.nodc.noaa.gov/General/NODC-Archive/bt.html。 通用温深仪输出（UBT）格式存储的是通过投弃式温深仪获取的温度-深度剖面数据。每条观测记录均附带航次信息、观测位置、观测日期与时间，数据记录由温度-深度值对构成。XBT数据文件中存储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变化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，特殊定制仪器则支持测量至1830米深度的剖面数据。