This dataset contains primarily sea temperatures data and salinity records resultant from NMFS Alaska Fisheries Science Center groundfish bottom trawl surveys, Bering Sea, Gulf of Alaska and U.S. west coast surveys, from approx. Aug. 1976 to Sept. 1997. The records in the file EVENT.LST tie directly to the records in the file PROFILE.LST, keying on vessel, cruise and event. Also, the PROFILE.LST cruises are in no particular order, for example, the data records begin with a 1982 Bering Sea cruise made by the vessel Pat San Marie. The files are ASCII text and were extracted from the NMFS RACEBase Oracle data base.

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Temperature profile and water depth data were collected using BT and XBT casts from the ALASKA, MORNING STAR, and PAT SAN MARIE in the Northwest Pacific Ocean and Bering Sea. Data were collected from 08 June 1985 to 16 September 1986 by National Marine Fisheries Service (NMFS) in Seattle. Data has been processed by NODC to the NODC standard Bathythermograph (XBT) (C116) format. The C116/C118 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 record was comprised of pairs of temperature-depth values. Unlike the MBT Data File, in which temperature values were recorded at uniform 5 m intervals, 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. Prior to July 1994, XBT data were routinely processed to one of these standard types. XBT data are now processed and loaded directly in to the NODC Ocean Profile Data Base (OPDB). Historic data from these two data types were loaded into the OPDB.