NODC Standard Format Bathythermograph XBT Selected Depths (SBT/C125) Data (1947-1992) (NCEI Accession 9400120)

This collection contains temperature, depth and other data collected using bathythermograph (MBT/XBT) casts from numerous platforms in oceans and seas around the world from 1947-08-14 to 1992-01-04. Data were processed by NODC to the NODC Bathythermograph XBT Selected Depths (SBT/C125) format.

The SBT format is used for temperature-depth data obtained from mechanical (MBT) and expendable (XBT) bathythermograph instruments. Data in this file were sent to NODC at depths selected by the originator - usually at standard horizons or some fixed interval. The MBT file holds data reported at a 5-meter depth interval, and depths in the XBT file are chosen at significant inflection points of the temperature-depth profile. SBT data can be selected from specific geographic regions or from specified cruises.

本数据集收录了1947年8月14日至1992年1月4日期间，全球各大洋及海域的众多作业平台通过温深仪（bathythermograph，MBT/XBT）测量剖面采集得到的温度、深度及其他相关海洋数据。所有数据均由美国国家海洋数据中心（National Oceanographic Data Center，NODC）处理为NODC温深仪XBT选定深度格式（SBT/C125）。

SBT格式用于存储由机械式温深仪（Mechanical Bathythermograph，MBT）与抛弃式温深仪（Expendable Bathythermograph，XBT）采集的温度-深度剖面数据。本文件中的数据由原始数据采集方按照选定深度提交至NODC，通常选取标准水层或固定间隔深度。其中，MBT格式文件存储的数据以5米深度间隔进行记录，而XBT格式文件中的采样深度则依据温度-深度剖面的显著拐点选取。SBT格式数据可按特定地理区域或指定航次进行筛选调取。