Temperature profiles from mechanical bathythermograph (MBT) casts from the USS PRIME in the Philippine Sea in support of the Fleet Observations of Oceanographic Data (FLOOD) project from 02 March 1961 to 27 April 1961 (NODC Accession 6100056)

MBT data were collected from the USS PRIME in support of the Fleet Observations of Oceanographic Data (FLOOD) project. Data were collected by US Navy; Ships of Opportunity from 02 March 1961 to 27 April 1961. 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.

MBT数据采集自美国海军"PRIME"号舰艇（USS PRIME），用于支持海洋学数据舰队观测（Fleet Observations of Oceanographic Data, FLOOD）项目。该数据由美国海军及随航观测舰艇于1961年3月2日至1961年4月27日采集。该观测平台配备专业设备与人员，用于监测天气与海洋状况。国家海洋数据中心（National Oceanographic Data Center, NODC）已将所有数据处理为符合其标准的通用海洋深度温度计输出（Universal Bathythermograph Output, UBT）格式。完整格式说明可通过NODC官方网站www.nodc.noaa.gov/General/NODC-Archive/bt.html获取。

UBT文件格式用于存储通过机械式海洋深度温度计（Mechanical Bathythermograph, MBT）采集的温度-深度剖面数据。MBT观测的最大探测深度约为285米，因此该类数据仅可用于研究海洋上层的热结构。每条观测记录均包含航次信息、观测日期、位置与时间。数据记录由多组温度-深度值对组成，本文件中的温度数据以每5米的均匀深度间隔进行记录。