(1) FILE NAME: 9504odsb.ogb (2) YEAR and MONTH: 1995, April (3) PI: Dr Jack Blanton (4) OTHERS: Julie Amft, Grady Nickles (5) BRIEF DESCRIPTION OF DATA FILE: ODIS (surface mapper) file that measured various environmental parameters every 15 seconds in the Ogeechee River during low water of a neap tide on April 06, 1995. (6) KEYWORDS: Ogeechee, ODIS, Neap (7) RESEARCH LOCATION: The Ogeechee River from OG+05.90 to OG+030.0 (2 digit river code + 4 digit code for distance from river mouth in km). (8) EXPERIMENTAL DESIGNS and METHODS: The Oceanographic Data Interface System (ODIS) was designed to interface with an assortment of instruments that are on a research vessel (see Lane Mitcham at the Skidaway Institute of Oceanography for technical details). The intake for this system is located approximately 1.5M below the water's surface. ODIS is currently connected to a Global Positioning System (GPS), a fathometer, a SeaBird Electronics thermosalinograph (SBE21), three Turner fluorometers, and an external temperature sensor. (9) NOTES and COMMENTS: Data lines with missing variable values appear as NaN. (10) VARIABLE DESCRIPTION: VARIABLE VARIABLE DESCRIPTION PRES/UNITS CODED ------- -------------------- ---------- ----- date date mm-dd-yy N time 24 hr GMT 0000 hr-min N sec seconds 00 seconds N station station location 0.01 Km Y depth depth 0.1 M N latd latitude N deg N latm latitude N min N lond longitude W deg N lonm longitude W min N cond conductivity 0.0001 S/m N density density (sigma-t) 0.001 Kg/m^3 N sal salinity 0.001 PSU N temp21 SBE 21 temperature(inside cabin) 0.001 deg C N temp3 external temperature sensor 0.001 deg C N humics humic fluorescence 0.01 ? N (11) CALCULATIONS: Salinity=PSS-78 Sigma-t=p(s,t,O)-1000 Station=distance from river mouth Both salinity and sigma-t are computed by the SeaBird software program. The formulas used wre 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. The station location was interpolated between known stations 2 km apart. (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) FORMATION OF VARIABLES: FILENAME: 9504odsb.ogb Column # Column Name Type Width Decimals -------- ----------- ---- ----- -------- 1 Date date 9 0 2 Time numeric 6 0 3 Sec numeric 3 0 4 Station numeric 7 2 5 Depth numeric 6 1 6 Latd numeric 4 0 7 Latm numeric 6 2 8 Lond numeric 4 0 9 Lonm numeric 6 2 10 Cond numeric 8 4 11 Density numeric 8 3 12 Sal numeric 8 3 13 Temp21 numeric 8 3 14 Temp3 numeric 8 3 15 Humics numeric 8 2 (16) NUMBER OF RECORDS: 401 lines (17) STATUS: Type 2 (18) FOR ARCHIVAL USE: