Metadata: Identification_Information: Citation: Citation_Information: Originator: Kimberly K. Yates Originator: Christopher S. Moore Originator: Mitchell K. Lemon Publication_Date: 20200423 Title: Time Series of Autonomous Carbonate System Parameter Measurements in Eastern Gulf of Mexico near Tampa Bay, Florida, USA Geospatial_Data_Presentation_Form: Tabular Digital Data Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/P91T185R Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P91T185R Description: Abstract: This dataset contains carbonate system data collected by scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center to investigate the effects of carbon cycling, coastal and ocean acidification in the Gulf of Mexico near the Tampa Bay estuary located in west central Florida, USA. These data were collected using an autonomous instrument called the Ocean Carbon System version 3 (OCSv3) deployed on the University of South Florida (USF), Coastal Ocean Monitoring and Prediction System (COMPS) Buoy C12. The OCSv3 consists of four sensors integrated into a Sea-Bird Scientific STOR-X submersible data logger including a Sea-Bird SeapHOx sensor for measurement of pH that incorporates a Sea-Bird SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder for measurement of conductivity (for calculation of salinity), temperature, depth, and dissolved oxygen; a Pro-Oceanus CO2-Pro CV CO2 sensor; and a Wetlabs Eco-PAR sensor for measurement of photosynthetically active radiation. The dataset is a time series of carbonate system parameters including: water temperature (Celsius, °C), pressure (decibar, dbar), salinity, pHT (pH on the total scale), carbon dioxide (parts per million, ppm), pressure from the CO2-Pro Infrared Gas Analyzer (IRGA) (millibars, mbar), dissolved oxygen (milligrams per liter, mg/L) and photosynthetically active radiation (microEinsteins). Each parameter was measured every hour for 24-hour time periods throughout the duration of deployment. Purpose: This dataset was acquired to assist USGS staff with the quantification, analysis and interpretation of geochemical time series data that will ultimately be used in assessments and research of or related to carbon cycling, coastal and ocean acidification. Data were collected during USGS field activity number (FAN) 2019-308-FA. Additional survey and data details are available from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-308-FA. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20181025 Ending_Date: 20200129 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.74239 East_Bounding_Coordinate: -83.74239 North_Bounding_Coordinate: 27.49953 South_Bounding_Coordinate: 27.49953 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:0a7dab8b-75fd-41ae-a492-84f7e3c4d1f9 Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: Geochemistry Theme_Keyword: Time series analysis Theme_Keyword: Marine geology Theme_Keyword: Carbon Theme_Keyword: Ocean acidification Theme_Keyword: Water temperature Theme_Keyword: Salinity Theme_Keyword: Oxygen content (water) Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: GeoscientificInformation Theme_Keyword: Environment Theme_Keyword: Oceans Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Carbonate Theme_Keyword: Ocean carbon system Theme_Keyword: Conductivity Theme_Keyword: Pressure Theme_Keyword: pH Theme_Keyword: CO2 Theme_Keyword: Salinity Theme_Keyword: PRES(IRGA) Theme_Keyword: Dissolved oxygen Theme_Keyword: Photosynthetically active radiation Theme_Keyword: PAR Theme_Keyword: Water temperature Theme_Keyword: Ocean acidification Theme_Keyword: Total alkalinity Theme_Keyword: Dissolved inorganic carbon Theme_Keyword: Gulf of Mexico Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Florida Place_Keyword: Tampa Bay Place_Keyword: Gulf of Mexico Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Surface water Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: Anthropocene Temporal_Keyword: Diurnal Temporal_Keyword: Diel Temporal_Keyword: Seasonal Temporal_Keyword: Annual Temporal_Keyword: Interannual Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originators of the data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly Yates Contact_Organization: United States Geological Survey Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Data_Set_Credit: Please acknowledge the USGS St. Petersburg Coastal and Marine Science Center and cite the USGS data release as the source for all products developed from these data. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All sensor data were subject to preliminary QA/QC. A two-step procedure has been taken to remove outliers. During the first step, data beyond acceptable measurement ranges for the sensors were flagged with a quality flag of 4 to indicate bad data. Next, data parameters were plotted to examine temporal trends and cross-correlation (for example, pCO2 vs. pH), as predictable relationships (linear or exponential) have been observed in previous discrete and autonomous measurements. Data points that deviate from temporal and/or correlation trends were flagged with a quality flag of 4 (indicating bad data). Logical_Consistency_Report: Data were checked to ensure all values fall within the range of analysis for each sensor, and outliers were marked with a quality flag of 3 or 4. Data were checked for missing or duplicate data points. Missing data points were marked with a value of -99. Geospatial data were plotted in either ArcGIS or in Google Earth to verify accuracy of the location. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Accuracy was checked against global positioning system (GPS) values provided by the manufacturer. Garmin GPSMAP64st and Garmin GPSmap 60CSx FPSMAP60 accuracy, < 10 meters Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Accuracy was checked against GPS values provided by the manufacture. Garmin GPSMAP64st and Garmin GPSmap 60CSx FPSMAP60 accuracy, < 10 meters Lineage: Process_Step: Process_Description: OCSv3 Description: The OCSv3 consists of 4 sensors, 1 pump, 1 submersible data logger, a solar power package, and is linked to the satellite telemetry package of the USF COMPS Buoy C12. The equipment models are: Pro-Oceanus CO2-Pro CV for measurement of carbon dioxide concentration; Sea-Bird SeapHOx sensor for measurement of pH on the total scale; Sea-Bird SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder for measurement of dissolved oxygen, salinity, temperature and depth; Sea-Bird/WET Labs ECO-PAR for measurement of photosynthetically active radiation (PAR); Sea-Bird STOR-X data logger, and a Sea-Bird SBE-5P submersible pump. Sensor resolution is as follows: Pro-Oceanus CO2-Pro 0.01 ppm for CO2; 1 mbar for PRESS(IRGA); SeapHOx 0.004 pH; Sea-Bird SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder 0.0001 degrees C for temperature; 0.00001 siemens for conductivity (used by the instrument to calculate salinity) and 0.002% of full scale range; 0.001 mg/L for dissolved oxygen; and ECO-PAR 14-bit digital output resolution. The sensors were packaged as a single unit in a custom designed platform that was mounted on an oceanographic observation system buoy. The Sea-Bird SBE-5P submersible pump pulls water through a stainless copper mesh strainer and pumps the water to the CO2-Pro CV for CO2 measurement. The sensors not requiring flow are located in close proximity to the pump intake and measure ambient water. The STOR-X and sensors are powered by a 90-watt solar panel and rechargeable battery system. The STOR-X distributes power to the attached sensors according to a custom schedule. The OCSv3 operates 24 hours per day, with a sampling acquisition period once every hour at the half-hour mark prefaced by a 20-minute warm up period for the CO2-Pro CV. The sampling acquisition period runs for approximately 00:01:10. The CO2 sensor re-zeros every 8 hours and collects approximately 35 CO2 and PRESS(IRGA) measurements during each sampling period. The ECO-PAR sensor collects approximately 51 PAR measurements per sample period. The SeapHOx collects 1 pH measurement per sample period. The SBE 37 collects 1 conductivity, temperature, dissolved oxygen and pressure measurements per sampling period. Data Storage and Preprocessing: Data are managed and stored by the STOR-X data logger. Acquired data are saved into sensor-specific .raw files that contain the information for each Julian day. Downloading this data from the site occurs at regular intervals to ensure the sensors’ operational status. Downloading these .raw files from the STOR-X requires the use of STORXCom software to communicate between the STOR-X and a computer. Once the data are downloaded, SatCon version 1.5 Data Conversion program converts the .raw files into .dat files and applies any processing required. Individual sensor Julian day .dat files are then combined into one large multi-day dataset per sensor. These files are opened in Microsoft (MS) Excel and saved in the .xlsx format. The combined multiday files contain headers for each individual day file that are strung together; these must be manually removed in MS Excel leaving only the top header line. Multi-day files are then processed through a custom averaging code written in Pearl, designed by David Zawada (USGS). This code averages the multiple measurements from each sensor per sampling period to generate a single averaged value for each sensor per sampling period, reported at the start time of the sampling period and day. In addition to averaging parameter values, the code also provides the mean, standard deviation, minimum and maximum for each sampling period. Averaged data for each sensor parameter are then manually merged into a single .xlsx file for further processing. Data files are deleted from the STOR-X after confirmation of successful download and storage of parameter data. Additionally, processed data are transferred hourly from the STOR-X through a satellite telemetry system and are available online at http://ocgtds.marine.usf.edu:8080/thredds/catalog/COMPS_C12_Month_USGS/catalog.html. Advanced Data Processing: Preliminary QA/QC of sensor data are performed after averaged data are compiled into .xlsx files and after advanced data processing is performed. Parameter data are plotted to examine sensor performance and identify non-trending outliers. Cross validation of sensor parameters is performed to further analyze outliers and identify questionable or bad data points. Further validation of pH and CO2 sensor data is performed by comparing sensor values to values measured in discrete water samples. Discrete pH is measured using spectrophotometric measurements. CO2 is calculated from discrete measurements of pH and dissolved inorganic carbon (performed using carbon coulometry methods), or from discrete measurements of pH and total alkalinity (measured spectrophotometrically). Measurement of sensor data is validated with discrete data approximately every three months. Process_Date: 2020 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly Yates Contact_Organization: USGS Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20201013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Gulf-of-Mexico-C12-OCSv3-Data-10252018-to-01292020.csv, Gulf-of-Mexico-C12-OCSv3-Data-10252018-to-01292020.xlsx Entity_Type_Definition: Time series data collected from eastern Gulf of Mexico beginning in October 2018 and continuing through January 2020. Data are provided as comma separated values (CSV) and Microsoft Excel files, that contain: coordinates, date, time, conductivity, water temperature, pressure at depth, salinity, pH, CO2, measurement chamber pressure for CO2, dissolved oxygen, photosynthetically active radiation and data quality flags for each parameter. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Site Description Attribute_Definition: Description of the physical location where the measurements were collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: The name of the geographic location at the sampling location. Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude coordinates measured in the World Geodetic System 1984 Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 27.49953 Range_Domain_Maximum: 27.49953 Attribute_Units_of_Measure: Decimal degrees Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude coordinates measured in the World Geodetic System 1984 Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -83.74239 Range_Domain_Maximum: -83.74239 Attribute_Units_of_Measure: Decimal degrees Attribute: Attribute_Label: DATETAG EST Attribute_Definition: A numeric identifier for the calendar date used by the USGS on the day of sample collection. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 10/25/2018 Range_Domain_Maximum: 01/29/2020 Attribute_Units_of_Measure: Units correspond to calendar month, day and year in MM/DD/YYYY format. Attribute: Attribute_Label: TIMETAG EST Attribute_Definition: Timestamp showing the time of day each sample was collected. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0:30:00 Range_Domain_Maximum: 23:30:00 Attribute_Units_of_Measure: Hours, minutes, seconds in the format HH:MM:SS Attribute: Attribute_Label: T(W) (C) Attribute_Definition: Water temperature measured in degrees Celsius Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -273.15 Range_Domain_Maximum: 30.82 Attribute_Units_of_Measure: Celsius (C) Attribute: Attribute_Label: QF_T(W) Attribute_Definition: A numeric value that indicates the quality of reported temperature data. Attribute_Definition_Source: National Oceanic and Atmospheric Administration (NOAA) National Centers for Environmental Information (NCEI) https://www.nodc.noaa.gov/GTSPP/document/codetbls/gtsppcodes/gtspp_qual.html Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 4, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Attribute: Attribute_Label: PRESS (dbar) Attribute_Definition: Pressure measured in decibars (dbar) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.094 Range_Domain_Maximum: 0.962 Attribute_Units_of_Measure: Decibar Attribute: Attribute_Label: QF_PRESS Attribute_Definition: A numeric value that indicates the quality of the reported pressure data. Attribute_Definition_Source: NOAA NCEI Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 4, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Attribute: Attribute_Label: SALINITY Attribute_Definition: A numeric value for salinity Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.59 Range_Domain_Maximum: 36.33 Attribute: Attribute_Label: QF_SALINITY Attribute_Definition: A numeric value that indicates the quality of the reported salinity data. Attribute_Definition_Source: NOAA NCEI Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 4, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Attribute: Attribute_Label: pHT Attribute_Definition: A numeric value for pH using the total scale. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.005 Range_Domain_Maximum: 8.137 Attribute: Attribute_Label: QF_pHT Attribute_Definition: A numeric value that indicates the quality of the reported total scale pH data. Attribute_Definition_Source: NOAA NCEI Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 3, 4, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Attribute: Attribute_Label: CO2 (ppm) Attribute_Definition: A numeric value for the concentration of CO2 in parts per million by volume. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 3729.9 Attribute_Units_of_Measure: parts per million (ppm) Attribute: Attribute_Label: QF_CO2 Attribute_Definition: A numeric value that indicates the quality of the reported CO2 concentration data. Attribute_Definition_Source: NOAA NCEI Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 2, 3, 4, 5, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Attribute: Attribute_Label: PRES(IRGA) (mbar) Attribute_Definition: A numeric value for pressure in the sampling chamber of the infrared gas analyzer of the CO2 sensor. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 991 Range_Domain_Maximum: 1190 Attribute_Units_of_Measure: mbar Attribute: Attribute_Label: QF_PRES(IRGA) Attribute_Definition: A numeric value that indicates the quality of the reported IRGA pressure data. Attribute_Definition_Source: NOAA NCEI Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 3, 4, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Attribute: Attribute_Label: OXYGEN (mg/L) Attribute_Definition: A numeric identifier for the concentration of oxygen in milligrams per liter of seawater Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.02 Range_Domain_Maximum: 10.72 Attribute_Units_of_Measure: milligrams/L Attribute: Attribute_Label: QF_OXYGEN Attribute_Definition: A numeric value that indicates the quality of the reported oxygen concentration data. Attribute_Definition_Source: NOAA NCEI Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 3, 4, 5, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Attribute: Attribute_Label: PAR (microEinsteins) Attribute_Definition: A numeric value for the concentration of photosynthetically available radiation. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 2898.7 Attribute_Units_of_Measure: microEinsteins Attribute: Attribute_Label: QF_PAR Attribute_Definition: A numeric value that indicates the quality of the reported PAR data. Attribute_Definition_Source: NOAA NCEI Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1, 4, 9 Enumerated_Domain_Value_Definition: Flag 1 = QC has been performed and element appears to be correct, Flag 2 = QC has been performed and element appears to be probably good with other elements, Flag 3 = QC has been performed and element appears to be probably bad, Flag 4 = QC has been performed and element appears to be bad, Flag 5 = the value has been modified as a result of QC, Flag 9 = The value of the element is missing. Enumerated_Domain_Value_Definition_Source: NOAA NCEI Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly Yates Contact_Organization: United States Geological Survey Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Distribution_Liability: Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: CSV (Comma Separated Values) Format_Version_Number: none Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-10.5066/P91T185R/data/Gulf-of-Mexico-C12-OCSv3-Data-10252018-to-01292020.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20201013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kimberly K. Yates Contact_Organization: United States Geological Survey Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8059 Contact_Electronic_Mail_Address: kyates@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998