Temperature profiles from mechanical bathythermograph (MBT) casts from the USS PIVOT in the South China Sea in support of the Fleet Observations of Oceanographic Data (FLOOD) project from 02 March 1965 to 20 March 1965 (NODC Accession 6500532)

MBT data were collected from the USS PIVOT in support of the Fleet Observations of Oceanographic Data (FLOOD) project. Data were collected in the South China Sea by US Navy; Ships of Opportunity from 02 March 1965 to 20 March 1965. The platform was equipped and staffed to observe weather and sea conditions. 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 file format is used for temperature-depth profile data obtained using the mechanical bathythermograph (MBT) instrument. The maximum depth of MBT observations is approximately 285 m. Therefore, MBT data are useful only in studying the thermal structure of the upper layers of the ocean. Cruise information, date, position, and time are reported for each observation. The data record comprises pairs of temperature-depth values. Temperature data in this file are recorded at uniform 5 m depth intervals.

机械式深度温度计（Mechanical Bathythermograph, MBT）数据采集自USS PIVOT号舰艇，用于支持海洋学数据舰队观测（Fleet Observations of Oceanographic Data, FLOOD）项目。1965年3月2日至3月20日，美国海军通过机会航船在南海收集了该批数据。该观测平台配备了天气与海况观测设备并配有操作人员。美国国家海洋数据中心（National Oceanographic Data Center, NODC）已将数据处理为符合NODC标准的通用深度温度计输出（Universal Bathythermograph Output, UBT）格式。完整格式说明可从NODC官网www.nodc.noaa.gov/General/NODC-Archive/bt.html获取。

UBT文件格式用于记录由机械式深度温度计（MBT）仪器获取的温深剖面数据。MBT观测的最大观测深度约为285米，因此其数据仅适用于研究海洋上层的热结构。每份观测记录均包含航次信息、观测日期、位置与时间。数据记录由多组温深数值对组成，该文件中的温度数据以均匀的5米深度间隔进行记录。