(1) FILE NAME: 9411ntr.sma DATA FILE NAME: 9411ntr.smb (2) YEAR and MONTH: 1994, November (3) PI: Dr. William J. Wiebe (4) OTHERS: Joan Sheldon (5) BRIEF DESCRIPTION OF DATA FILE: Dissolved nutrient concentrations (see KEYWORDS for list) in St. Marys River in November, 1994. No note of tidal stage was taken. (6) KEYWORDS: ammonium, ammonia, nitrite, nitrate, TDN, nitrogen, silicate, phosphate, St. Marys River (7) RESEARCH LOCATION: Estuarine portion of St. Marys River from approximately 0 to 18 km from the mouth (positive numbers are upstream, negative numbers are downstream). Main channel only. (8) EXPERIMENTAL DESIGN AND METHODS: See Nutrient Analysis Methods Manual on the GARLMER web site: http://lmer.marsci.uga.edu/datapage/nutrients_manual_contents.html (9) NOTES AND COMMENTS: No note of tidal stage was taken. (10) VARIABLE DESCRIPTION: VARIABLE DESCRIPTION PRECISION UNITS CODED SITE sampling site 0.1 kilometers Y DATE sample date MM-DD-YY N TIME sample time HHMM EST N CAST CTD cast # N DEPTH sample depth 0.2 meters N SALINITY sample salinity 0.5 PSU N AMMON dissolved ammonium+ammonia 0.1 micromolar N AMMN95CL AMMON +/-95% conf. limit micromolar N NITRITE dissolved nitrite 0.05 micromolar N NO295CL NITRITE +/-95% conf. limit micromolar N NITRATE dissolved nitrate 1 micromolar N NO395CL NITRATE +/-95% conf. limit micromolar N TDN total dissolved nitrogen 1.5 micromolar N TDN95CL TDN +/-95% conf. limit micromolar N SILICATE dissolved silicates 3 micromolar N SI95CL SILICATE +/-95% conf. limit micromolar N PHOSPH dissolved reactive phosphates 0.05 micromolar N PHOS95CL PHOSPH +/-95% conf. limit micromolar N COMMENTS individual sample comments Y SITE CODES: Two-letter river abbreviation +/-distance from mouth in kilometers, formatted as 000.0. +Distances are upstream, -distances are seaward. RIVER ABBREVIATION Savannah SV Ogeechee OG Altamaha AL Satilla SL St. Marys SM White Oak Creek WO Other OT PRECISION is a very general estimate of the precision of all such analyses from all sampling cruises. See 95% confidence limits columns for a more accurate estimate of the error associated with each sample measurement. COMMENTS CODES: 1 Sample taken at/near high water. 2 Sample taken during flood tide. 3 Sample taken during ebb tide. 4 Site distance from river mouth is approximate. (11) CALCULATIONS: See Nutrient Analysis Methods Manual on the GARLMER web site: http://lmer.marsci.uga.edu/datapage/nutrients_manual_contents.html for calculation of sample concentrations according to each analytical protocol. Micromolar nutrient concentrations given are means of (usually) three (or for TDN, four) replicate determinations on a single water sample. NITRATE = (Nitrate + nitrite determined together) - (NITRITE determined separately) (12) FOR MORE INFORMATION, CONTACT: Dr. William J. Wiebe (or) Joan Sheldon Department of Marine Sciences University of Georgia Athens, Georgia 30602-3636 (13) OTHER DATA FILES TO REFERENCE: CTD and ODIS files from the same sampling cruise (14) REFERENCE CITATIONS: See Nutrient Analysis Methods Manual on the GARLMER web site: http://lmer.marsci.uga.edu/datapage/nutrients_manual_contents.html (15) FORMAT OF VARIABLES: File Name: 9411ntr.smb COL.# NAME TYPE WIDTH DECIMALS 1 SITE alphanumeric 10 1 2 DATE date 10 N/A 3 TIME numeric 6 0 4 CAST numeric 5 0 5 DEPTH numeric 6 1 6 SALINITY numeric 6 1 7 AMMON numeric 7 2 8 AMMN95CL numeric 6 2 9 NITRITE numeric 7 2 10 NO295CL numeric 6 2 11 NITRATE numeric 7 2 12 NO395CL numeric 6 2 13 TDN numeric 8 2 14 TDN95CL numeric 7 2 15 SILICATE numeric 8 2 16 SI95CL numeric 7 2 17 PHOSPH numeric 7 2 18 PHOS95CL numeric 6 2 19 COMMENTS alphanumeric 7 N/A (16) NUMBER OF RECORDS: 3 (17) STATUS: 3 (18) FOR ARCHIVAL USE: DATE RECEIVED: 15 February 2002