(1) FILE NAME: 9902ctda.oga DATA FILE NAME: 9902ctda.ogb (2) YEAR and MONTH: 1999, February (3) PI: Dr. Jack Blanton (4) OTHERS: Julie Amft, Dr. Lawrence Pomeroy (5) BRIEF DESCRIPTION of DATA FILE: 1m vertical bin averages of 7 CTD casts, including uncalibrated OBS and uncalibrated chlorophyll a fluorescence, taken aboard the R/V Blue Fin on the Ogeechee River on 02 February 1999. (6) KEYWORDS: Ogeechee, CTD (7) RESEARCH LOCATION: The Ogeechee River from OG+24.1 to OG+00.0 (2-character river code + 3-digit code for upstream distance from river mouth in km). (8) EXPERIMENTAL DESIGNS AND METHODS: Casts were taken with a Sea-Bird 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 raised to the surface. The downcasts were processed using standard Sea-Bird 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 (degrees and minutes N), and longitude (degrees and minutes W). Predicted tidal height at ~OG+05: High Water at 0912 EST, Low Water at 1545 EST. (10) VARIABLE DESCRIPTION: VARIABLE VARIABLE DESCRIPTION PRECIS/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 volts*6 N OBS uncalibrated optical backscatterence 0.1 volts*400 N (11) CALCULATIONS: Salinity=PSS-78 Sigma-t=p(s,t,0)-1000 Both salinity and sigma-t were computed by the Sea-Bird 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: 9902ctda.ogb 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: 52 lines (17) STATUS: Type 2 (18) FOR ARCHIVAL USE: Data File Validated By: Julie Amft Date: 01 May 2000 Date Entered To Database: 23 June 2000 Log Of Changes And Comments: