
File:  PRESSURE GAUGE DATA (F017)                             
Geographic Coverage:  Coastal Alaska, U.S. Gulf Coast             
Time Period:  1975 to 1989      
File Organization:  Cruise order                
File Size:  1,066 Observation-months
        
Description:                                                     
     This file contains time series measurements of seawater
pressure from anchored  or bottom-mounted sensors.  Measurements of
variations at depth of seawater pressure provide information on
tidal and storm flows, ocean circulation, and other phenomena that
cause changes in sea surface elevation or slope and that can be
detected from their pressure signature.  Position, bottom depth,
and gauge depth are reported for each station.  The data record
comprises values of total pressure at specified date and time. 
Data values may be subject to averaging or filtering and are
typically reported at time intervals of 10-15 minutes.  Seawater
temperature may also be reported.  Comments may be reported in a
text record.                                                      
        
File Structure: 
     Four 50-character records: (1) Text Record, (2) Gauge Master Record 1,
(3) Gauge Master Record 2, and (4) Detail Record.


File Format:

                      Pressure Gauge Data (F017)



      PARAMETER                      DESCRIPTION                        SC  FL


 TEXT RECORD
      NODC FILE NUMBER          ALWAYS '017'                             1  3
      NODC TRACK NUMBER         6-CHARACTER UNIQUE CRUISE OR DATA SET    4  6
                                IDENTIFIER ASSIGNED BY NODC
      RECORD NUMBER             ALWAYS '1'                              10  1
      GAUGE NUMBER              FIVE-CHARACTER FIELD ASSIGNED BY THE    11  5
                                ORIGINATOR - ALSO INCLUDED ON RECORD
                                TYPES 2, 3 AND 4
      TEXT                      TWENTY-CHARACTER FIELD FOR COMMENTS OR  16  20
                                PERTINENT INFORMATION   
      SEQUENCE NUMBER           XXXXX - USED FOR SORTING TEXT RECORDS   36  5
      BLANKS                                                            41  10



 GAUGE MASTER RECORD I
      NODC FILE NUMBER          ALWAYS '017'                             1  3
      NODC TRACK NUMBER         6-CHARACTER UNIQUE CRUISE OR DATA SET    4  6
                                IDENTIFIER ASSIGNED BY NODC      
      RECORD NUMBER             ALWAYS '2'                              10  1
      GAUGE NUMBER              SEE RECORD '1'                          11  5
      LATITUDE                  DDMMXX (DEGREES, MINUTES TO HUNDRETHS)  16  6
      LATITUDE HEMISPHERE       1-CHARACTER CODE 'N' OR 'S'             22  1 
      LONGITUDE                 DDDMMXX (DEGREES, MINUTES TO HUNREDTHS) 23  7
      LONGITUDE HEMISPHERE      1-CHARACTER CODE 'E' OR 'W'             30  1 
      DEPTH OF PRESSURE         XXXXX (METERS TO TENTHS)                31  5
        GAUGE   
      NUMBER OF DETAIL          XXXXX - USED TO INDICATE NUMBER OF      36  5
        RECORDS                 DETAIL RECORDS (4) TO FOLLOW
      STATION IDENTIFIER        10-CHARACTER ORIGINATOR STATION         41  10
                                IDENTIFIER  



 GAUGE MASTER RECORD II
      NODC FILE NUMBER          ALWAYS '017'                             1  3
      NODC TRACK NUMBER         6-CHARACTER UNIQUE CRUISE OR DATA SET    4  6
                                IDENTIFIER ASSIGNED BY NODC
      RECORD NUMBER             ALWAYS '3'                              10  1
      GAUGE NUMBER              SEE RECORD '1'                          11  5
      DEPTH TO BOTTOM           XXXXX (WHOLE METERS)                    16  5
      METER USAGE SEQUENCE      XXX - USED FOR INDICATING NUMBER OF     21  3
        NUMBER                  TIMES METER HAS BEEN USED   
      INSTITUTION               TWO-CHARACTER NODC INSTITUTION CODE -   24  2
                                USE NODC CODE 0218   
      LOCATION NAME             SIX-CHARACTER NAME DETERMINED BY THE    26  6
                                ORIGINATOR  
      BLANKS                                                            32  19



 DETAIL RECORD
      NODC FILE NUMBER          ALWAYS '017'                             1  3
      NODC TRACK NUMBER         6-CHARACTER UNIQUE CRUISE OR DATA SET    4  6
                                IDENTIFIER ASSIGNED BY NODC
      RECORD NUMBER             ALWAYS '4'                              10  1
      GAUGE NUMBER              SEE RECORD '1'                          11  5
      DATE (GMT)                YYMMDD                                  16  6
      TIME (GMT)                XXXXXX (HOURS, MINUTES TO HUNDREDTHS)   22  6
      TOTAL PRESSURE            XXXXXXXX (DECIBARS TO THOUSANDTHS)      28  8
      SEQUENCE NUMBER           XXXXX - USED FOR SORTING DATA RECORDS   36  5
      TEMPERATURE               XXXXX NEGATIVE TEMPERATURES ARE         41  5
                                PRECEDED BY A MINUS SIGN ADJACENT TO
                                TEMPERATURE VALUE - DEG C TO THOUSANDTHS
      BLANKS                                                            46  15
    


NODC Code Tables Used with this Format:

CODE NUMBER  CODE NAME
-----------  ---------

0218   DATA SOURCE 
 ----   --------------------
     02 -- WOODS HOLE OCEANOGRAPHIC INST
     03 -- OREGON STATE UNIVERSITY  
     09 -- UNIVERSITY OF WASHINGTON(SEATTLE)
     12 -- COLUMBIA UNIV. LAMONT-DOHERTY GEOL OBSERVATORY
           (PALISADES N.Y.)  
     3F -- PMEL-UNIVERSITY OF WASHINGTON(SEATTLE)   
     BC -- BROWN & CALDWELL (COSTA MESA, CA.)   
     CI -- UNIV. OF ALASKA  
     DS -- DOBROCKY SEATECH (ANCHORAGE, ALASKA) 
     I7 -- UNIVERSITY OF ALASKA-IMS (FAIRBANKS) 
     TB -- NATIONAL OCEAN SURVEY, PMC (SEATTLE) 
