WATER TEMPERATURE and other data from DISCOVERY, UNKNOWN PLATFORMS and other platforms from 1988-07-29 to 1991-07-26 (NODC Accession 9200096)

The water depth and temperature data were collected from UK ships CHALLENGER, DISCOVERY, DARWIN, FLEETWOOD, LIMA, OCEAN WEATHER STATION, and UNKNOWN PLATFORMS between July, 1988 and July, 1991. The originator's bathythermograph (XBT) data containing 557 profiles were submitted on a tape by P. Horsburgh, Hydro Department, Birkenhead, UK. The data have been converted and are now available on line in C116 (XBT) file format of NODC. The data type C116 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. 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.本数据集的水深与水温数据采集于1988年7月至1991年7月期间，采集来源包括英国科考船“挑战者号”(CHALLENGER)、“发现号”(DISCOVERY)、“达尔文号”(DARWIN)、“弗利特伍德号”(FLEETWOOD)、“利马号”(LIMA)、海洋气象站(OCEAN WEATHER STATION)以及未知作业平台(UNKNOWN PLATFORMS)。英国伯肯黑德水文部门的P. Horsburgh以磁带形式提交了原始投弃式温深仪(expendable bathythermograph，XBT)数据，该数据集共包含557条剖面。该数据已完成格式转换，目前可在线获取，采用的是国家海洋数据中心(NODC)的C116(XBT)文件格式。 C116类型数据包含通过投弃式温深仪(XBT)设备获取的水温-水深剖面数据。每条观测记录均包含航次信息、观测位置、日期与时间。数据记录由多组水温-水深数值对构成。该XBT数据文件中的水温值对应非均匀分布的水深，水深数据仅记录那些精准刻画温度曲线所需的最少数量测点(即“拐点”)。标准XBT设备可获取的剖面最大水深为450米或760米；若使用特制设备，则可将测量最大水深提升至1830米。