(1) FILE NAME:  9607ctda.sma
	 DATA FILE NAME:  9607ctda.smb

 (2) YEAR and MONTH:  1996, July    

 (3) PI:  Dr. Jack Blanton

 (4) OTHERS:  Kristen O'Malley

 (5) BRIEF DESCRIPTION of DATA FILE:  1m vertical bin averages of 17 CTD casts,
     including calibrated OBS and uncalibrated chlorophyll a fluorescence, taken
     aboard the R/V Blue Fin on the St Marys River at both high and low water on 
     July 18, 1996. 

 (6) KEYWORDS:  St Marys, CTD

 (7) RESEARCH LOCATION:  The St Marys River from SM-000.6 to SM+033.9 (2 digit river
     code + 4 digit code for distance from river mouth in km).

 (8) EXPERIMENTAL DESIGNS AND METHODS: Casts were taken with a SeaBird Electronics CTD25
     (S/N 64).  After soaking at the surface for approximately 45 seconds, the CTD was  
     lowered to the bottom by a power winch and then held there for an additional 45
     seconds before being raised to the surface. The collected data's downcasts  
     were processed using standard SeaBird software to produce the 1m vertical
     bin averages.

 (9) NOTES AND COMMENTS:  Each cast has a header that contains information in the
     following order: cast number, station location, date, time (EST), max water
     depth (M), latitude (N in degrees and minutes), and longitude
     (W in degrees and minutes).  Estimated predicted tidal height at station 
     SM+003: High Water at 0948 EST and Low Water at 1602 EST.

(10) VARIABLE DESCRIPTION:

      VARIABLE  VARIABLE DESCRIPTION          PRES/UNITS        CODED	
      --------  --------------------          ----------        -----

      cast      cast number                                       N 
      depth     depth                         0.1 M               N
      temp      temperature                   0.01 deg C          N
      sal       salinity                      0.01 PSU            N
      sig       sigma-t (density)             0.01 Kg/M^3         N
      fluor     uncalibrated chlorophyll a   
                fluorescence                  0.01 V*6            N
      obs       calibrated optical            0.1  mg/L           N
                backscatterence
 
(11) CALCULATIONS:
                  Salinity=PSS-78
                  Sigma-t=p(s,t,O)-1000
     Both salinity and sigma-t were computed by the SeaBird software program.  The 
     formulas used were obtained from "Algorithms for Computation of Fundamental
     Properties of Seawater" by N.P. Fofonoff and R.C. Millard Jr.; Unesco technical
     papers in marine science #44, 1983.

(12) FOR MORE INFORMATION CONTACT: Julie Amft
                                   Skidaway Institute of Oceanography
                                   10 Ocean Science Circle
                                   Savannah, GA 31411

(13) OTHER DATA FILES TO REFERENCE:

(14) REFERENCE CITATIONS: None

(15) FORMAT OF VARIABLES:
	
     FILENAME: 9607ctda.smb
     
      Column #  Column Name  Type      Width  Decimals
      --------  -----------  ----      -----  -------- 
         1      Cast         numeric     7       0
         2      Depth        numeric     9       1
         3      Temp         numeric     8       2
         4      Sal          numeric     8       2
         5      Sig          numeric     8       2
         6      Fluor        numeric     8       2
         7      OBS          numeric     8       1

(16) NUMBER of RECORDS: 184 lines         

(17) STATUS: Type 2

(18) FOR ARCHIVAL USE:

      Data File Validated By:  Julie Amft
      Date:  October 1996
      Date Entered To Database:  23 October 1996
      Log Of Changes And Comments:  
	08 June 2000 - Corrected Header Line times to Eastern
		Standard Time from Eastern Daylight Time. tdb