I. Data Set Descriptors A. Title: Daniela Di Iorio. 2003. June 2003 CTD, PAR, oxygen and chlorophyll profiles for the Georgia Coastal Ecosystems Doboy Sound transect. Georgia Coastal Ecosystems LTER Data Catalog (data set PHY-GCEM-0308a2; http://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?accession=PHY-GCEM-0308a2) B. Accession Number: PHY-GCEM-0308a2 C. Description 1. Originator(s): Name: Daniela Di Iorio Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: daniela@uga.edu 2. Abstract: Two hydrographic surveys were performed on June 18, 2003, along an east-to-west transect through Doboy Sound near Sapelo Island, Georgia (Doboy Sound Transect, GCE-DB). Vertical CTD profiles were collected at approximately 2km intervals from -2km to 12km along the transect during low tide and high tide conditions. Conductivity, temperature, pressure, optical back scatter, photosynthetically-available radiation, oxygen and chlorophyll a fluorescence were measured, and depth, salinity and sigma-t were calculated for each profile. Data values collected during the upcast were deleted. This data set was collected as part of the Georgia Coastal Ecosystems LTER quarterly hydrographic monitoring program. 3. Study Type: Monitoring 4. Study Themes: Physical Oceanography, Hydrography 5. LTER Core Areas: Inorganic Nutrients 6. Georeferences: geographic coordinates as data columns 7. Submission Date: Aug 15, 2003 D. Keywords: conductivity, Cruise CTD Profiling, density, depth, estuaries, hydrography, Inorganic Nutrients, oxygen, photosynthetically active radiation, pressure, salinity, temperature, water column II. Research Origin Descriptors A. Overall Project Description 1. Project Title: Georgia Coastal Ecosystems LTER Project 2. Principal Investigators: Name: James T. Hollibaugh Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: aquadoc@uga.edu 3. Funding Period: May 01, 2000 to May 01, 2006 4. Objectives: To investigate the linkages between coastal and distant upland areas in central Georgia mediated by surface and ground water delivery to the coastal zone. This will be addressed by examining the relationship between variability in environmental factors driven by river flow, primarily salinity, and ecosystem processes and structure. 5. Abstract: We propose to establish a Long Term Ecological Research site on the central Georgia coast in the vicinity of Sapelo Island. This is a barrier island and marsh complex with the Altamaha River, one of the largest and least developed rivers on the east coast of the US, as the primary source of fresh water. The proposed study would investigate the linkages between local and distant upland areas mediated by water - surface water and ground water - delivery to the coastal zone. We would explicitly examine the relationship between variability in environmental factors driven by river flow, primarily salinity because we can measure it at high frequency, and ecosystem processes and structure. We will accomplish this by comparing estuary/marsh complexes separated from the Altamaha River by one or two lagoonal estuary/marsh complexes that damp and attenuate the river signal. This spatial gradient is analogous to the temporal trend in riverine influence expected as a result of development in the watershed. We will implement a monitoring system that documents physical and biological variables and use the time trends and spatial distributions of these variables and of their variance structure to address questions about the factors controlling distributions, trophic structure, diversity, and biogeochemistry. An existing GIS-based hydrologic model will be modified to incorporate changes in river water resulting from changes in land use patterns that can be expected as the watershed develops. This model will be linked to ecosystem models and will serve as an heuristic and management tool. Another consequence of coastal development is that as river flow decreases, groundwater flow increases and becomes nutrified. We will compare the effects of ground water discharge from the surficial aquifer in relatively pristine (Sapelo Island) versus more urbanized (mainland) sites to assess the relative importance of fresh water versus nutrients to productivity, structure and biomass turnover rate in marshes influenced by groundwater. We will also investigate the effect of marine processes (tides, storm surge) on mixing across the fresh/salt interface in the surficial aquifer. Additional physical studies will relate the morphology of salt marsh - tidal creek channel complexes to tidal current distributions and exchange. These findings will be incorporated into a physical model that will be coupled to an existing ecosystem model. The land/ocean margin ecosystem lies at the interface between two ecosystems in which distinctly different groups of decomposers control organic matter degradation. The terrestrial ecosystem is largely dominated by fungal decomposers, while bacterial decomposers dominate the marine ecosystem. Both groups are important in salt marsh-dominated ecosystems. Specific studies will examine, at the level of individual cells and hyphae, the relationship bacteria and fungi in the consortia that decompose standing dead Spartina and other marsh plants and examine how, or if, this changes along the salinity gradient. 6. Funding Source: NSF OCE 9982133 B. Sub-project Description 1. Site Description a. Geographic Location: GCE-DB -- Doboy Sound, Georgia, USA DB+00 -- DB+00 DB+02 -- DB+02 DB+04 -- DB+04 DB+06 -- DB+06 DB+08 -- DB+08 DB+10 -- DB+10 DB+12 -- DB+12 DB-02 -- DB-02 Coordinates: GCE-DB -- NW: 081 22 05.66 W, 31 27 20.39 N NE: 081 14 34.64 W, 31 27 20.39 N SE: 081 14 34.64 W, 31 20 27.39 N SW: 081 22 05.66 W, 31 20 27.39 N DB+00 -- 081 16 54.2 W, 31 22 34.9 N DB+02 -- 081 17 56.0 W, 31 23 10.2 N DB+04 -- 081 18 19.6 W, 31 24 11.8 N DB+06 -- 081 18 56.3 W, 31 25 08.3 N DB+08 -- 081 19 46.4 W, 31 25 56.6 N DB+10 -- 081 20 26.8 W, 31 26 49.9 N DB+12 -- 081 21 23.9 W, 31 27 04.0 N DB-02 -- 081 15 43.0 W, 31 22 12.1 N b. Physiographic Region: GCE-DB -- Estuary and tidal marsh DB+00 -- Estuary and tidal marsh DB+02 -- Estuary and tidal marsh DB+04 -- Estuary and tidal marsh DB+06 -- Estuary and tidal marsh DB+08 -- Estuary and tidal marsh DB+10 -- Estuary and tidal marsh DB+12 -- Estuary and tidal marsh DB-02 -- Estuary and tidal marsh c. Landform Components: GCE-DB -- Intertidal marsh bordering sounds, tidal channels and creeks DB+00 -- Intertidal marsh bordering sounds, tidal channels and creeks DB+02 -- Intertidal marsh bordering sounds, tidal channels and creeks DB+04 -- Intertidal marsh bordering sounds, tidal channels and creeks DB+06 -- Intertidal marsh bordering sounds, tidal channels and creeks DB+08 -- Intertidal marsh bordering sounds, tidal channels and creeks DB+10 -- Intertidal marsh bordering sounds, tidal channels and creeks DB+12 -- Intertidal marsh bordering sounds, tidal channels and creeks DB-02 -- Intertidal marsh bordering sounds, tidal channels and creeks d. Hydrographic Characteristics: GCE-DB -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB+00 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB+02 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB+04 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB+06 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB+08 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB+10 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB+12 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. DB-02 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. e. Topographic Attributes: GCE-DB -- Flat, with elevations ranging from 0-3.4m above mean low tide DB+00 -- Flat, with elevations ranging from 0-3.4m above mean low tide DB+02 -- Flat, with elevations ranging from 0-3.4m above mean low tide DB+04 -- Flat, with elevations ranging from 0-3.4m above mean low tide DB+06 -- Flat, with elevations ranging from 0-3.4m above mean low tide DB+08 -- Flat, with elevations ranging from 0-3.4m above mean low tide DB+10 -- Flat, with elevations ranging from 0-3.4m above mean low tide DB+12 -- Flat, with elevations ranging from 0-3.4m above mean low tide DB-02 -- Flat, with elevations ranging from 0-3.4m above mean low tide f. Geology, Lithology and Soils: GCE-DB -- unspecified DB+00 -- unspecified DB+02 -- unspecified DB+04 -- unspecified DB+06 -- unspecified DB+08 -- unspecified DB+10 -- unspecified DB+12 -- unspecified DB-02 -- unspecified g. Vegetation Communities: GCE-DB -- unspecified DB+00 -- unspecified DB+02 -- unspecified DB+04 -- unspecified DB+06 -- unspecified DB+08 -- unspecified DB+10 -- unspecified DB+12 -- unspecified DB-02 -- unspecified h. History of Land Use and Disturbance: none recorded i. Climate: Climate summary for Sapelo Island, Georgia, based on NWS data from 1980-2010: Daily-aggregated Values: Mean (sample standard deviation) mean air temperature: 20.09°C (7.28°C) minimum air temperature: 15.02°C (7.96°C) maximum air temperature: 24.82°C (6.98°C) total precipitation: 3.26mm (10.3mm) Yearly-aggregated Daily Values: Mean (sample standard deviation) total precipitation (1980-2010): 1124mm (266mm) 2. Experimental or Sampling Design a. Design Characteristics: Study 1: Survey 1 -- Up-river low tide survey conducted aboard the R/V Savannah from station DB+02 to DB+10 Study 2: Survey 2 -- Up-river high tide survey conducted aboard the R/V Savannah from station DB-02 to DB+12 b. Permanent Plots: Study 1: none Study 2: none c. Data Collection Duration and Frequency: Study 1: CTD profiles were collected at 2km intervals along the transect. Study 2: CTD profiles were collected at 2km intervals along the transect. Beginning of Observations: Study 1: Jun 18, 2003 Study 2: Jun 18, 2003 End of Observations: Study 1: Jun 18, 2003 Study 2: Jun 18, 2003 3. Research Methods a. Field and Laboratory Methods: Method 1: CTD Profiling (R/V Savannah) -- The CTD instrument package was mounted inside an open stainless steel frame and deployed from the deck of the R/V Savannah (UNOLS vessel, Skidaway Institute of Oceanography) using a hydrographic winch fitted with Kevlar(R) line. The CTD was lowered to just below the water surface and allowed to equilibrate for 45-60 seconds, then lowered at approximately 1 m/s until the frame touched bottom. Data was collected via telemetry cables in real time at 2-4 Hz and logged to a shipboard computer. Data was also logged to the internal CTD datalogger at 8 Hz and periodically downloaded to a shipboard computer. Method 2: CTD Profile Post-processing -- Raw profile data were processed using Sea-Bird Electronics DATACNV program (www.seabird.com) to convert instrument readings to calibrated data and to calculate derived parameters (i.e. depth from pressure; salinity, density and sigma-t from conductivity, temperature and pressure; oxygen saturation from dissolved oxygen). The data then underwent a quality control process, which included removal of the soaking time period, removal of decreasing pressure during the profile due to ship and wave motion, removal of the upcast information (i.e. data after the instrument has hit bottom), removal of spikes in any of the parameters, application of flow-through time delays for the oxygen (0.5 s) and fluormeter (3.75 s) sensors, calculation of PAR depth to account for the physical separation between the PAR and pressure sensors (~0.75m). The quality control operations were performed using custom Matlab programs developed by D. DiIorio and K. Kang. b. Instrumentation: Method 1: SBE 25 Sealogger CTD (#250) Conductivity Sensor Manufacturer: Sea-Bird Electronics, Inc. (Model: 4C 6800m) Last Calibration: Sep 11, 2001 Parameter: conductivity (Accuracy: 0.0003 S/m, Readability: 0.00004 S/m, Range: 0 to 7 S/m) Protocol: instrument is soaked at the surface for 60 seconds, then lowered by winch for vertical profling SBE 25 Sealogger CTD (#250) Fluorometer Manufacturer: WETLabs (Model: WETStar) Last Calibration: Sep 21, 2001 Parameter: chlorophyll-a fluorescence (Range: 0.03-150 µg/L) Protocol: instrument is soaked at the surface for 60 seconds, then lowered by winch for vertical profling SBE 25 Sealogger CTD (#250) Optical Back Scatter Sensor Manufacturer: D&A Instruments (Model: OBS-3) Parameter: optical backscatter (turbidity) (Range: 1-3000 mg/L sediment, 1-1500 NTU) Protocol: instrument is soaked at the surface for 60 seconds, then lowered by winch for vertical profling SBE 25 Sealogger CTD (#250) Oxygen Sensor Manufacturer: Sea-Bird Electronics (Model: SBE 43) Last Calibration: Sep 25, 2001 Parameter: oxygen concentration (Accuracy: 2% of saturation, Range: 0-120% of surface saturation) Protocol: instrument is soaked at the surface for 60 seconds, then lowered by winch for vertical profling SBE 25 Sealogger CTD (#250) PAR Sensor Manufacturer: Li-Cor (Model: LI-193SA) Last Calibration: Sep 26, 2001 Parameter: PAR Protocol: instrument is soaked at the surface for 60 seconds, then lowered by winch for vertical profling SBE 25 Sealogger CTD (#250) Pressure Sensor Manufacturer: Sea-Bird Electronics, Inc. (Model: SBE 29 (PAINE 211-75-710-03)) Last Calibration: Sep 07, 2001 Parameter: pressure (Accuracy: 0.25%, Range: 0-1000 psia) Protocol: instrument is soaked at the surface for 60 seconds, then lowered by winch for vertical profling SBE 25 Sealogger CTD (#250) Temperature Sensor Manufacturer: Sea-Bird Electronics, Inc. (Model: 3F 6800m) Last Calibration: Sep 08, 2001 Parameter: temperature (Accuracy: +/-0.001°C, Range: -5.0°C to +35°C) Protocol: instrument is soaked at the surface for 60 seconds, then lowered by winch for vertical profling Method 2: none c. Taxonomy and Systematics: Method 1: not applicable Method 2: not applicable d. Permit History: Method 1: none Method 2: none 4. Project Personnel a. Personnel: 1: Daniela Di Iorio 2: KiRyong Kang b. Affiliations: 1: University of Georgia, Athens, Georgia 2: University of Georgia, Athens, Georgia III. Data Set Status and Accessibility A. Status 1. Latest Update: 19-Feb-2012 2. Latest Archive Date: 18-Nov-2011 3. Latest Metadata Update: 19-Feb-2012 4. Data Verification Status: Reviewed by GCE-LTER IM B. Accessibility 1. Storage Location and Medium: Stored at GCE-LTER Data Management Office Dept. of Marine Sciences Univ. of Georgia Athens, GA 30602-3636 USA on media: electronic data download (WWW) or compact disk 2. Contact Person: Name: Wade M. Sheldon, Jr. Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: sheldon@uga.edu 3. Copyright Restrictions: not copyrighted 4. Restrictions: All publications based on this data set must cite the contributor and Georgia Coastal Ecosystems LTER project, and two copies of the manuscript must be submitted to the GCE-LTER Information Management Office. a. Release Date: GCE LTER Affiliates: Aug 15, 2003, Public: Aug 15, 2004 b. Citation: Data provided by the Georgia Coastal Ecosystems Long Term Ecological Research Project, supported by funds from NSF OCE 9982133 (data set PHY-GCEM-0308a2) c. Disclaimer: The user assumes all responsibility for errors in judgement based on interpretation of data and analyses presented in this data set. 5. Costs: free electronic data download via WWW, distribution on CD may be subject to nominal processing and handling fee IV. Data Structural Descriptors A. Data Set File 1. File Name: PHY-GCEM-0308a2_2_2.CSV 2. Size: 2544 records 3. File Format: ASCII text (comma-separated value format) 3a. Delimiters: single comma 4. Header Information: 5 lines of ASCII text 5. Alphanumeric Attributes: upper case 6. Quality Control Flag Codes: I = invalid value (out of range), Q = questionable value 7. Authentication Procedures: not specified 8. Calculations: PAR_Depth: PAR_Depth(m) = Depth(m) - 0.75m 9. Processing History: Software version: GCE Data Toolbox Version 3.30 (09-Feb-2012) Data structure version: GCE Data Structure 1.1 (29-Mar-2001) Original data file processed: ctdprf_dob0603_raw.dat (2544 records) Data processing history: 09-Oct-2003: new GCE Data Structure 1.1 created ('newstruct') 09-Oct-2003: CTD profile data imported from 'ctdprf_dob0603_raw.dat' ('imp_ctdprofile') 09-Oct-2003: column descriptor metadata assigned using template 'CTD_Profile' ('meta_template') 09-Oct-2003: updated 12 metadata fields in the Dataset, Site, Status, Study sections ('imp_ctdprofile') 09-Oct-2003: data structure validated ('gce_valid') 09-Oct-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 13-Oct-2003: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 13-Oct-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 13-Oct-2003: manually edited data set metadata ('ui_editmetadata') 30-Oct-2003: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 30-Oct-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 02-Nov-2003: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 02-Nov-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 03-Nov-2003: imported Data, Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 03-Nov-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 25-Oct-2004: added column 'Cruise' at position 0 ('addcol') 08-Nov-2005: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 08-Nov-2005: updated 66 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 17-Apr-2006: standardized case of date component column units to prevent unit conversion issues ('batch_update_datetime'): updated units for column Year from 'yyyy' to 'YYYY'; updated units for column Month from 'mm' to 'MM'; updated units for column Day from 'dd' to 'DD' 25-Aug-2011: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 25-Aug-2011: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 25-Aug-2011: matched geographic location names in column Station to registered locations in 'geo_locations.mat' to generate column Transect containing corresponding sites/transects ('add_sitenames') 25-Aug-2011: added column 'Transect' at position 12 ('addcol') 25-Aug-2011: added column 'SurveyName' at position 14 ('addcol') 25-Aug-2011: added geographic metadata based on matching values in columns Transect and Station to site and transect names registered in 'geo_polygons.mat' and location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 25-Aug-2011: updated 9 metadata fields in the Site, Status sections ('add_sitemetadata') 15-Nov-2011: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 15-Nov-2011: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 18-Nov-2011: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 18-Nov-2011: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('imp_gcemetadata') 19-Feb-2012: flags for columns Depth_Total, Pressure, Depth, Temperature, Conductivity, Salinity, Density, Sigma_t, OBS, PAR_Depth, PAR, Oxygen, Oxygen_Sat and ChlorA converted to data columns, flag codes updated in metadata ('flags2cols') 19-Feb-2012: updated 7 metadata fields in the Data, Status sections ('exp_ascii') 19-Feb-2012: updated 15 metadata fields in the Status, Data sections to reflect attribute metadata ('updatecols') 19-Feb-2012: parsed and formatted metadata ('listmeta') B. Variable Information 1. Variable Name: column 1. Cruise column 2. Year column 3. Month column 4. Day column 5. Hour column 6. Longitude column 7. Latitude column 8. Depth_Total column 9. Flag_Depth_Total column 10. RealTime column 11. Filename column 12. CTD column 13. Transect column 14. Station column 15. SurveyName column 16. Survey column 17. Cast column 18. Pressure column 19. Flag_Pressure column 20. Depth column 21. Flag_Depth column 22. Temperature column 23. Flag_Temperature column 24. Conductivity column 25. Flag_Conductivity column 26. Salinity column 27. Flag_Salinity column 28. Density column 29. Flag_Density column 30. Sigma_t column 31. Flag_Sigma_t column 32. OBS column 33. Flag_OBS column 34. PAR_Depth column 35. Flag_PAR_Depth column 36. PAR column 37. Flag_PAR column 38. Oxygen column 39. Flag_Oxygen column 40. Oxygen_Sat column 41. Flag_Oxygen_Sat column 42. ChlorA column 43. Flag_ChlorA 2. Variable Definition: column 1. GCE-LTER research cruise identifier (LTER[MM][YY]) column 2. Calendar year column 3. Calendar month column 4. Calendar day column 5. Fractional hours GMT column 6. Geographic longitude column 7. Geographic latitude column 8. Water column depth measured by shipboard SONAR column 9. QA/QC flags for Water column depth measured by shipboard SONAR (flagging criteria, where "x" is Depth_Total: x<0="I", x>25="Q") column 10. Real-time profile data flag (low frequency data collection rate) column 11. CTD cast filename column 12. ID number of CTD instrument used for the cast column 13. GCE cruise transect column 14. GCE-LTER sampling station column 15. Cruise survey title column 16. Nominal survey column 17. CTD cast number column 18. Water pressure column 19. QA/QC flags for Water pressure (flagging criteria, where "x" is Pressure: x<0="I") column 20. Water depth at pressure sensor column 21. QA/QC flags for Water depth at pressure sensor (flagging criteria, where "x" is Depth: x<0="I", x>25="Q") column 22. Water temperature column 23. QA/QC flags for Water temperature (flagging criteria, where "x" is Temperature: x<2="Q", x>35="Q") column 24. Conductivity column 25. QA/QC flags for Conductivity (flagging criteria, where "x" is Conductivity: x<0="I") column 26. Salinity column 27. QA/QC flags for Salinity (flagging criteria, where "x" is Salinity: x<0="I", x>36="Q") column 28. Water density column 29. QA/QC flags for Water density (flagging criteria, where "x" is Density: x<0="I") column 30. Sigma-t (i.e. (Water Density-1)*1000) column 31. QA/QC flags for Sigma-t (i.e. (Water Density-1)*1000) (flagging criteria, where "x" is Sigma_t: x<-5="Q", x>28="Q") column 32. Optical back-scatter column 33. QA/QC flags for Optical back-scatter (flagging criteria, where "x" is OBS: ) column 34. Water depth at PAR sensor column 35. QA/QC flags for Water depth at PAR sensor (flagging criteria, where "x" is PAR_Depth: x<0="I", x>25="Q") column 36. Photosynthetically available radiation column 37. QA/QC flags for Photosynthetically available radiation (flagging criteria, where "x" is PAR: x<0="I", x>2000="I", PAR_Depth<0="I") column 38. Oxygen concentration column 39. QA/QC flags for Oxygen concentration (flagging criteria, where "x" is Oxygen: x<0="I", x>16="Q", Oxygen_Sat<60="Q", Oxygen_Sat>125="Q") column 40. Percent oxygen saturation in water column 41. QA/QC flags for Percent oxygen saturation in water (flagging criteria, where "x" is Oxygen_Sat: x<0="I", x<60="Q", x>125="Q") column 42. Uncalibrated Chlorophyll a concentration based on whole-water fluorometric analysis column 43. QA/QC flags for Uncalibrated Chlorophyll a concentration based on whole-water fluorometric analysis (flagging criteria, where "x" is ChlorA: x<0="I") 3. Units of Measurement: column 1. none column 2. YYYY column 3. MM column 4. DD column 5. hours column 6. degrees column 7. degrees column 8. m column 9. none column 10. none column 11. none column 12. none column 13. none column 14. none column 15. none column 16. none column 17. none column 18. dbar column 19. none column 20. m column 21. none column 22. °C column 23. none column 24. S/m column 25. none column 26. PSU column 27. none column 28. kg/m^3 column 29. none column 30. kg/m^3 column 31. none column 32. unspecified column 33. none column 34. m column 35. none column 36. µEinsteins/m^2 column 37. none column 38. ml/L column 39. none column 40. % column 41. none column 42. volts column 43. none 4. Data Type a. Storage Type: column 1. alphanumeric column 2. integer column 3. integer column 4. integer column 5. floating-point column 6. floating-point column 7. floating-point column 8. floating-point column 9. alphanumeric column 10. integer column 11. alphanumeric column 12. integer column 13. alphanumeric column 14. alphanumeric column 15. alphanumeric column 16. integer column 17. integer column 18. floating-point column 19. alphanumeric column 20. floating-point column 21. alphanumeric column 22. floating-point column 23. alphanumeric column 24. floating-point column 25. alphanumeric column 26. floating-point column 27. alphanumeric column 28. floating-point column 29. alphanumeric column 30. floating-point column 31. alphanumeric column 32. floating-point column 33. alphanumeric column 34. floating-point column 35. alphanumeric column 36. floating-point column 37. alphanumeric column 38. floating-point column 39. alphanumeric column 40. floating-point column 41. alphanumeric column 42. floating-point column 43. alphanumeric b. Variable Codes: CTD: 250 = DiIorio SBE25 CTD, 1234 = UGA Marine Sciences SBE19 CTD Flag_Oxygen: Q = questionable value Flag_Oxygen_Sat: Q = questionable value c. Numeric Range: column 1. (none) column 2. 2003 to 2003 column 3. 6 to 6 column 4. 18 to 18 column 5. 11.3631 to 18.2375 column 6. -81.3566 to -81.2579 column 7. 31.3703 to 31.4513 column 8. 4.37 to 13.803 column 9. (none) column 10. 0 to 0 column 11. (none) column 12. 250 to 250 column 13. (none) column 14. (none) column 15. (none) column 16. 1 to 2 column 17. 1 to 13 column 18. 0.758 to 11.431 column 19. (none) column 20. 0.752 to 11.351 column 21. (none) column 22. 27.4944 to 29.1198 column 23. (none) column 24. 2.829 to 5.2773 column 25. (none) column 26. 16.0379 to 32.9393 column 27. (none) column 28. 1007.9452 to 1021.0464 column 29. (none) column 30. 7.9403 to 21.0084 column 31. (none) column 32. 0 to 168.9866 column 33. (none) column 34. 0.046 to 10.551 column 35. (none) column 36. 0.1421 to 1291.4 column 37. (none) column 38. 2.5041 to 4.4175 column 39. (none) column 40. 50.0111 to 94.799 column 41. (none) column 42. 3.2078 to 23.515 column 43. (none) d. Missing Value Code: 5. Data Format a. Column Type: column 1. text column 2. numerical column 3. numerical column 4. numerical column 5. numerical column 6. numerical column 7. numerical column 8. numerical column 9. text column 10. numerical column 11. text column 12. numerical column 13. text column 14. text column 15. text column 16. numerical column 17. numerical column 18. numerical column 19. text column 20. numerical column 21. text column 22. numerical column 23. text column 24. numerical column 25. text column 26. numerical column 27. text column 28. numerical column 29. text column 30. numerical column 31. text column 32. numerical column 33. text column 34. numerical column 35. text column 36. numerical column 37. text column 38. numerical column 39. text column 40. numerical column 41. text column 42. numerical column 43. text b. Number of Columns: 43 c. Decimal Places: column 1. 0 column 2. 0 column 3. 0 column 4. 0 column 5. 3 column 6. 5 column 7. 5 column 8. 2 column 9. 0 column 10. 0 column 11. 0 column 12. 0 column 13. 0 column 14. 0 column 15. 0 column 16. 0 column 17. 0 column 18. 3 column 19. 0 column 20. 3 column 21. 0 column 22. 3 column 23. 0 column 24. 3 column 25. 0 column 26. 3 column 27. 0 column 28. 3 column 29. 0 column 30. 3 column 31. 0 column 32. 2 column 33. 0 column 34. 3 column 35. 0 column 36. 3 column 37. 0 column 38. 2 column 39. 0 column 40. 2 column 41. 0 column 42. 2 column 43. 0 6. Logical Variable Type: column 1. nominal (none) column 2. datetime (discrete) column 3. datetime (discrete) column 4. datetime (discrete) column 5. datetime (continuous) column 6. geographic coordinate (continuous) column 7. geographic coordinate (continuous) column 8. data (continuous) column 9. coded value (none) column 10. logical (discrete) column 11. nominal (none) column 12. coded value (discrete) column 13. nominal (none) column 14. nominal (none) column 15. nominal (none) column 16. nominal (discrete) column 17. nominal (discrete) column 18. data (continuous) column 19. coded value (none) column 20. data (continuous) column 21. coded value (none) column 22. data (continuous) column 23. coded value (none) column 24. data (continuous) column 25. coded value (none) column 26. calculation (continuous) column 27. coded value (none) column 28. calculation (continuous) column 29. coded value (none) column 30. calculation (continuous) column 31. coded value (none) column 32. data (continuous) column 33. coded value (none) column 34. calculation (continuous) column 35. coded value (none) column 36. data (continuous) column 37. coded value (none) column 38. data (continuous) column 39. coded value (none) column 40. data (continuous) column 41. coded value (none) column 42. data (continuous) column 43. coded value (none) 7. Flagging Criteria: column 1. none column 2. x<2000="Q", x>2006="Q" column 3. x<1="I", x>12="I" column 4. x<1="I", x>366="I" column 5. x<0="I", x>24="I" column 6. x<-180="I", x<-82="Q", x>-80="Q", x>180="I" column 7. x<-90="I", x<31="Q", x>32="Q", x>90="I" column 8. x<0="I", x>25="Q" column 9. none column 10. x<0="I", x>1="I" column 11. none column 12. none column 13. none column 14. none column 15. none column 16. none column 17. x<0="I" column 18. x<0="I" column 19. none column 20. x<0="I", x>25="Q" column 21. none column 22. x<2="Q", x>35="Q" column 23. none column 24. x<0="I" column 25. none column 26. x<0="I", x>36="Q" column 27. none column 28. x<0="I" column 29. none column 30. x<-5="Q", x>28="Q" column 31. none column 32. none column 33. none column 34. x<0="I", x>25="Q" column 35. none column 36. x<0="I", x>2000="I", col_PAR_Depth<0="I" column 37. none column 38. x<0="I", x>16="Q", col_Oxygen_Sat<60="Q", col_Oxygen_Sat>125="Q" column 39. none column 40. x<0="I", x<60="Q", x>125="Q" column 41. none column 42. x<0="I" column 43. none C. Data Anomalies: Oxygen_Sat values for 298 records were <60% or >125% so these values and corresponding Oxygen values were flagged as Q (questionable). ChlorA values are missing for 122 records for unspecified reasons. V. Supplemental Descriptors A. Data Acquisition 1. Data Forms: Copies of CTD cast logs and raw data are maintained at the Georgia Coastal Ecosystems Information Management Office 2. Form Location: GCE-LTER Information Management Office, Dept. of Marine Sciences, University of Georgia, Athens, GA 30602 3. Data Entry Validation: not specified B. Quality Assurance/Quality Control Procedures: QA/QC flags are generated automatically according to domain criteria specified for each data column. A flag column is generated and appended to the data table if any flags are assigned to any value, listing the flags for each column on each row. C. Supplemental Materials: not applicable D. Computer Programs: Sea-Bird Electronics Sea-Soft version 4.246, Matlab version 6.1 E. Archival Practices: Data sets and documentation are stored in structured binary (Matlab 5.x files) and delimited ASCII text formats, and archived on magnetic tape and CD at the GCE LTER Information Management Office at the University of Georgia, Athens, Georgia, USA F. Publications: not specified G. History of Data Set Usage 1. Data Request History: not specified 2. Data Set Update History: none 3. Review History: none 4. Questions and Comments from Users: none