I. Data Set Descriptors A. Title: Samantha B. Joye. 2009. Hobo Tidbit sediment surface temperature measurements at Hammock PC_i_29 Well 2 from 15-Aug-2008 to 10-Mar-2011. Georgia Coastal Ecosystems LTER Data Catalog (data set POR-GCES-1401; http://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?accession=POR-GCES-1401) B. Accession Number: POR-GCES-1401 C. Description 1. Originator(s): Name: Samantha B. Joye Address: Department of Marine Sciences, University of Georgia, Athens, Georgia Postal Code: 30602 Country: USA Email: mjoye@uga.edu 2. Abstract: Sediment surface temperature was measured at 5 minute intervals using an Onset Tidbit data logger from 15-Aug-2008 to 18-Sep-2008. Data were downloaded from the logger and processed using the manufacturer's software, then imported into MATLAB for post-processing, quality control and documention. These data were collected as part of the Georgia Coastal Ecosystems LTER Intensive Hammock Characterization project (http://gce-lter.marsci.uga.edu/public/app/send_project_eml.asp?id=57), and will be used for groundwater modeling studies at two marsh hammocks on Sapelo Island, Georgia. 3. Study Type: Monitoring 4. Study Themes: Geology 5. LTER Core Areas: Inorganic Fluxes 6. Georeferences: geographic coordinates as data columns 7. Submission Date: 02-Feb-2009 D. Keywords: sediment, temperature, hammock, soil II. Research Origin Descriptors A. Overall Project Description 1. Project Title: Georgia Coastal Ecosystems LTER Project 2. Principal Investigators: Name: Merryl Alber Address: Dept. of Marine Sciences, University of Georgia, Athens, Georgia Postal Code: 30602-3636 Country: USA Email: malber@uga.edu Name: Steven C. Pennings Address: Department of Biology and Biochemistry, University of Houston, Houston, Texas Postal Code: 7204-5513 Country: USA Email: spennings@uh.edu 3. Funding Period: 01-May-2000 to 31-Dec-2012 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: The Georgia Coastal Ecosystems (GCE) LTER program, located on the central Georgia coast, was established in 2000. The study domain encompasses three adjacent sounds (Altamaha, Doboy, Sapelo) and includes upland (mainland, barrier islands, marsh hammocks), intertidal (fresh, brackish and salt marsh) and submerged (river, estuary, continental shelf) habitats. Patterns and processes in this complex landscape vary spatially within and between sites, and temporally on multiple scales (tidal, diurnal, seasonal, and interannual). Overlain on this spatial and temporal variation are long-term trends caused by climate change, sea level rise, and human alterations of the landscape. These long-term trends are likely to manifest in many ways, including changes in water quality, river discharge, runoff and tidal inundation patterns throughout the estuarine landscape. The overarching goal of the GCE program is to understand the mechanisms by which variation in the quality, source and amount of both fresh and salt water create temporal and spatial variability in estuarine habitats and processes, in order to predict directional changes that will occur in response to long-term shifts in estuarine salinity patterns. 6. Funding Source: NSF OCE 9982133 and OCE-0620959 B. Sub-project Description 1. Site Description a. Geographic Location: PC_i_29_WELL_LOC_2 -- Hammock PC_i_29 Well Location 2 Coordinates: PC_i_29_WELL_LOC_2 -- 81 16 40.2 W, 31 23 41.7 N b. Physiographic Region: PC_i_29_WELL_LOC_2 -- Back-barrier island c. Landform Components: PC_i_29_WELL_LOC_2 -- Marsh hammock d. Hydrographic Characteristics: PC_i_29_WELL_LOC_2 -- Site is subject to 2-3m semi-diurnal tides e. Topographic Attributes: PC_i_29_WELL_LOC_2 -- Flat, with elevations ranging from 0-3m above mean low tide f. Geology, Lithology and Soils: PC_i_29_WELL_LOC_2 -- Pleistocene sediments g. Vegetation Communities: PC_i_29_WELL_LOC_2 -- unspecified h. History of Land Use and Disturbance: i. Climate: Climate summary for Sapelo Island, Georgia, based on NWS data from 1980-2001: Daily-aggregated Values: Mean (sample standard deviation) mean air temperature: 19.78°C (6.98°C) minimum air temperature: 14.64°C (7.54°C) maximum air temperature: 24.62°C (6.78°C) total precipitation: 3.58mm (11.35mm) Yearly-aggregated Values: Mean (sample standard deviation) total precipitation (1981-2000): 1302mm (250mm) 2. Experimental or Sampling Design a. Design Characteristics: Sediment surface temperature was measured at high frequency to characterize sediment conditions and tidal inundation patterns. b. Permanent Plots: none c. Data Collection Duration and Frequency: Sediment surface temperature was measured at 5 minute intervals using an autonomous data logger. Beginning of Observations: 15-Aug-2008 End of Observations: 10-Mar-2011 3. Research Methods a. Field and Laboratory Methods: Method 1: Hammock Selection -- In 2008 we selected two hammocks for detailed study: HN_I_1 is of Holocene origin and is located adjacent to Blackbeard Island to the north of Sapelo Island, Georgia; PC_I_29 is of Pleistocene origin and is located adjacent to the south end of Sapelo Island. These hammocks are of similar size, with similar vegetation zones in the high marsh. We set up transects in each hammock that run from the nearby upland (Blackbeard and Sapelo Islands, respectively), through the marsh, and up and over each hammock to the marsh adjacent to the Sound. Method 2: Sediment Temperature Measurements -- Onset Hobo Tidbit temperature loggers were placed on the surface of the sediment in PVC enclosures to protect against solar radiation. Loggers were periodically retrieved and data were downloaded to a computer for analysis. b. Instrumentation: Method 1: none Method 2: Temperature Sensor Manufacturer: Onset (Model: HOBO Tidbit v2) Parameter: Temperature (Accuracy: 0.2ºC) c. Taxonomy and Systematics: Method 1: none Method 2: none d. Speclies List: e. Permit History: Method 1: none Method 2: none 4. Project Personnel a. Personnel: 1: Samantha B. Joye 2: Charles Schutte 3: Kristen Anstead 4: Wade Sheldon b. Affiliations: 1: University of Georgia, Athens, Georgia 2: University of Georgia, Athens, Georgia 3: University of Georgia Marine Institute, Sapelo Island, Georgia 4: University of Georgia, Athens, Georgia III. Data Set Status and Accessibility A. Status 1. Latest Update: 24-Jun-2015 2. Latest Archive Date: 3. Latest Metadata Update: 24-Jun-2015 4. Data Verification Status: 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. Position: GCE-LTER Information Manager Address: Dept. of Marine Sciences, University of Georgia, Athens, Georgia Postal Code: 30602-3636 Country: USA Email: gcelter@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: Affiliates: 10-Aug-2011, Public: 09-Aug-2012 b. Citation: Data provided by the Georgia Coastal Ecosystems Long Term Ecological Research Project, supported by funds from NSF OCE 9982133 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: POR-GCES-1401_PC_i_29_Well_2_Hobo_aug08-mar11_1_0.CSV 2. Size: 899797 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, Q = questionable value, X = excise record flag (data collected under unsuitable conditions), E = estimated value based on interpolation 7. Authentication Procedures: not specified 8. Calculations: 9. Processing History: Software version: GCE Data Toolbox Version 3.9.3 (06-Apr-2015) Data structure version: GCE Data Structure 1.1 (29-Mar-2001) Original data files processed: HB_PCi29_Well2_Tidbit_20080815-20080918_est_filtered.txt (32520 records) HB_PCi29_Well2_Tidbit_20090126-20090225_est_filtered.txt (28662 records) HB_PCi29_Well2_Tidbit_20090225-20090323_est_filtered.txt (24729 records) HB_PCi29_Well2_Tidbit_20090323-20090423_est_filtered.txt (29626 records) HB_PCi29_Well2_Tidbit_20090423-20090522_gmt_filtered.txt (27738 records) HB_PCi29_Well2_Tidbit_20090522-20090622_gmt_filtered.txt (29810 records) HB_PCi29_Well2_Tidbit_20090622-20090721_gmt_filtered.txt (27731 records) HB_PCi29_Well2_Tidbit_20090721-20090821_gmt_filtered.txt (29744 records) HB_PCi29_Well2_Tidbit_20090821-20090921_gmt_filtered.txt (29595 records) HB_PCi29_Well2_Tidbit_20090921-20091020_gmt_filtered.txt (27701 records) HB_PCi29_Well2_Tidbit_20091020-20091118_gmt_filtered.txt (27652 records) HB_PCi29_Well2_Tidbit_20091118-20091217_gmt_filtered.txt (27794 records) HB_PCi29_Well2_Tidbit_20091217-20100113_gmt_filtered.txt (25700 records) HB_PCi29_Well2_Tidbit_20100113-20100215_gmt_filtered.txt (31532 records) HB_PCi29_Well2_Tidbit_20100215-20100318_gmt_filtered.txt (29696 records) HB_PCi29_Well2_Tidbit_20100318-20100414_gmt_filtered.txt (25729 records) HB_PCi29_Well2_Tidbit_20100414-20100514_gmt_filtered.txt (28574 records) HB_PCi29_Well2_Tidbit_20100514-20100616_gmt_filtered.txt (31464 records) HB_PCi29_Well2_Tidbit_20100616-20100713_gmt_filtered.txt (25724 records) HB_PCi29_Well2_Tidbit_20100713-20100812_gmt_filtered.txt (28774 records) HB_PCi29_Well2_Tidbit_20100813-20100908_gmt_filtered.txt (25046 records) HB_PCi29_Well2_Tidbit_20100908-20101008_gmt_filtered.txt (28558 records) HB_PCi29_Well2_Tidbit_20101008-20101021_gmt_filtered.txt (12074 records) HB_PCi29_Well2_Tidbit_20101021-20101121_gmt_filtered.txt (29831 records) HB_PCi29_Well2_Tidbit_20101121-20101220_gmt_filtered.txt (27761 records) HB_PCi29_Well2_Tidbit_20101220-20110118_gmt_filtered.txt (27654 records) HB_PCi29_Well2_Tidbit_20110118-20110215_gmt_filtered.txt (26712 records) HB_PCi29_Well2_Tidbit_20110215-20110310_gmt_filtered.txt (22139 records) Data processing history: 10-Aug-2011: new GCE Data Structure 1.1 created ('newstruct') 10-Aug-2011: 32520 rows imported from ASCII data file 'HB_PCi29_Well2_Tidbit_20080815-20080918_est_filtered.txt' ('imp_ascii') 10-Aug-2011: 5 metadata fields in file header parsed ('parse_header') 10-Aug-2011: automatically assigned numerical types and precisions for columns Second and Temperature; reassigned data type of column Second to 'd' (integer) ('assign_numtype') 10-Aug-2011: data structure validated ('gce_valid') 10-Aug-2011: 32520 values in 'Year' were updated with new values ('update_data') 10-Aug-2011: Q/C flagging criteria applied for column(s) Year, 'flags' field updated ('dataflag') 10-Aug-2011: copied/reordered columns Year, Month, Day, Hour, Minute, Second and Temperature ('copycols') 10-Aug-2011: imported metadata from the template 'GCE_Hobo_Tidbit_Hammock', updating descriptors for columns Year, Month, Day, Hour, Minute, Second and Temperature ('meta_template') 10-Aug-2011: updated 47 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('apply_template') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: calculated numeric MATLAB serial date from individual date component columns, added 'Date' column at position 1 ('add_datecol') 10-Aug-2011: added column 'Site' at position 8 ('addcol') 10-Aug-2011: added column 'Location' at position 9 ('addcol') 10-Aug-2011: added geographic metadata based on matching values in column Location to location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 10-Aug-2011: updated 9 metadata fields in the Site, Status sections ('add_sitemetadata') 10-Aug-2011: updated title ('newtitle') 10-Aug-2011: updated 2 metadata fields in the Dataset, Status sections ('newtitle') 10-Aug-2011: updated 5 metadata fields in the Dataset, Status sections ('addmeta') 10-Aug-2011: renamed column 'Site' to 'Hammock' and propagated the change to any dependent Q/C flag criteria ('rename_column') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: updated 2 metadata fields in the Dataset, Status sections ('addmeta') 10-Aug-2011: added Longitude and Latitude columns by matching values in the Location column to entries in the GCE geographic database ('add_stationcoords') 10-Aug-2011: 28662 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 24729 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 29626 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 27738 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 29810 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 27731 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 29744 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 29595 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 27701 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 27652 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 27794 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 25700 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 31532 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 29696 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 25729 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 28574 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 31464 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 25724 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 28774 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 25046 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 28558 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 12074 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 29831 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 27761 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 27654 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 26712 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: 22139 rows added at the bottom of the data set ('datamerge') 10-Aug-2011: updated 58 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 10-Aug-2011: updated title ('newtitle') 10-Aug-2011: updated 2 metadata fields in the Dataset, Status sections ('newtitle') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: manually edited data set metadata ('ui_editmetadata') 10-Aug-2011: edited data set title in structure and metadata ('ui_editor') 10-Aug-2011: inserted 129527 new records with date/time values and NaN/null data values (replicating common values in the non-data columns Hammock, Location, Longitude and Latitude) to fill in date/time interval gaps in the data series ('fill_date_gaps') 10-Aug-2011: sorted by column Date(ascending) ('sortdata') 10-Aug-2011: deleted existing datetime columns Year, Month, Day, Hour, Minute and Second; updated Year, Month, Day, Hour, Minute and Second datetime columns added after column Date ('add_datepartcols') 10-Aug-2011: Q/C flagging criteria of column Temperature edited ('ui_editor') 10-Aug-2011: Q/C flagging criteria applied for column(s) Temperature, 'flags' field updated ('dataflag') 10-Aug-2011: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 10-Aug-2011: documented flagged and missing values in column Temperature as data set anomalies in the metadata ('add_anomalies') 10-Aug-2011: manually edited data set metadata ('ui_editmetadata') 10-Aug-2011: edited data set title in structure and metadata ('ui_editor') 24-Jun-2015: updated 1 metadata fields in the Dataset sections ('addmeta') 24-Jun-2015: converted dates in column(s) Date to format yyyy-mm-dd HH:MM:SS 24-Jun-2015: flags for column Temperature converted to data columns, flag codes updated in metadata ('flags2cols') 24-Jun-2015: updated 6 metadata fields in the Data sections ('addmeta') 24-Jun-2015: updated 15 metadata fields in the Status, Data sections to reflect attribute metadata ('updatecols') 24-Jun-2015: parsed and formatted metadata ('listmeta') B. Variable Information 1. Variable Name: column 1. Date column 2. Year column 3. Month column 4. Day column 5. Hour column 6. Minute column 7. Second column 8. Hammock column 9. Location column 10. Longitude column 11. Latitude column 12. Temperature column 13. Flag_Temperature 2. Variable Definition: column 1. Calendar date and time of observation column 2. Calendar year column 3. Calendar month column 4. Calendar day column 5. Hours - GMT column 6. Minutes column 7. Seconds column 8. Hammock id where the sensor is installed column 9. Deployment location column 10. Geographic longitude in decimal degrees column 11. Geographic latitude in decimal degrees column 12. Water temperature column 13. QA/QC flags for Water temperature (flagging criteria, where "x" is Temperature: x<0="Q", x>40="Q") 3. Units of Measurement: column 1. yyyy-mm-dd HH:MM:SS - GMT column 2. YYYY column 3. MM column 4. DD column 5. hr column 6. min column 7. sec column 8. none column 9. none column 10. deg column 11. deg column 12. °C column 13. none 4. Data Type a. Storage Type: column 1. string column 2. integer column 3. integer column 4. integer column 5. integer column 6. integer column 7. floating-point column 8. string column 9. string column 10. floating-point column 11. floating-point column 12. floating-point column 13. string b. Variable Codes: Flag_Temperature: Q = questionable value c. Numeric Range: column 1. (none) column 2. 2008 to 2011 column 3. 1 to 12 column 4. 1 to 31 column 5. 0 to 23 column 6. 0 to 59 column 7. 0 to 59.9999 column 8. (none) column 9. (none) column 10. -81.2778 to -81.2778 column 11. 31.3949 to 31.3949 column 12. -4.26 to 38.07 column 13. (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. text column 9. text column 10. numerical column 11. numerical column 12. numerical column 13. text b. Number of Columns: 13 c. Decimal Places: column 1. 0 column 2. 0 column 3. 0 column 4. 0 column 5. 0 column 6. 0 column 7. 2 column 8. 0 column 9. 0 column 10. 6 column 11. 6 column 12. 3 column 13. 0 6. Logical Variable Type: column 1. datetime (none) column 2. datetime (discrete) column 3. datetime (discrete) column 4. datetime (discrete) column 5. datetime (discrete) column 6. datetime (discrete) column 7. datetime (continuous) column 8. nominal (none) column 9. nominal (none) column 10. geographic coordinate (continuous) column 11. geographic coordinate (continuous) column 12. data (continuous) column 13. coded value (none) 7. Flagging Criteria: column 1. none column 2. none column 3. x<1="I";x>12="I" column 4. x<1="I";x>31="I" column 5. x<0="I";x>24="I" column 6. x<0="I";x>60="I" column 7. x<0="I";x>60="I" column 8. none column 9. none column 10. x<-180="I";x>180="I" column 11. x<-90="I";x>90="I" column 12. x<0="Q";x>40="Q" column 13. none C. Data Anomalies: Values of 3774 records in Temperature were flagged as Q (questionable value) for dates: 02/04/2009, 02/04/2009-02/05/2009, 01/05/2010, 01/10/2010, 01/11/2010, 12/14/2010, 12/15/2010, 12/27/2010, 12/28/2010, 01/09/2011, 01/12/2011, 01/13/2011, 01/14/2011, 01/15/2011, 01/16/2011. Values of 129527 records in Temperature are missing for dates: 09/18/2008-01/26/2009, 02/25/2009, 03/23/2009, 04/23/2009, 05/22/2009, 06/22/2009, 07/21/2009, 08/21/2009, 09/21/2009, 10/20/2009, 11/18/2009, 12/17/2009, 01/13/2010, 02/15/2010, 03/18/2010, 04/14/2010, 05/14/2010, 06/16/2010, 07/13/2010, 08/12/2010-08/13/2010, 09/08/2010, 10/08/2010, 10/21/2010, 11/21/2010, 12/20/2010, 01/18/2011, 02/15/2011. V. Supplemental Descriptors A. Data Acquisition 1. Data Forms: Digital copies of data logger files are maintained in the GCE-LTER Information Management office and UGA Marine Institute on Sapelo Island. 2. Form Location: GCE-LTER Information Management Office, Dept. of Marine Sciences, University of Georgia, Athens, GA 30602 3. Data Entry Validation: B. Quality Assurance/Quality Control Procedures: QA/QC flags are generated automatically according to domain criteria specified for each data column, then subsequently reviewed and revised as appropriate. Coded flag columns are generated for each data column, listing qualifier flags assigned to the data value on the corresponding row. C. Supplemental Materials: not applicable D. Computer Programs: HOBOware Pro, MATLAB R2009B E. Archival Practices: Data sets and documentation are stored in structured binary (Matlab 6.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: G. History of Data Set Usage 1. Data Request History: 2. Data Set Update History: not updated 3. Review History: none 4. Questions and Comments from Users: none