Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Originator: Nancy T. DeWitt Originator: James G. Flocks Originator: William R. Pfeiffer Originator: Dana S. Wiese Publication_Date: 2010 Title: 10cct01_v2rbf_50m.tif: 50-Meter Resolution Grid of Swath Bathymetry Data Collected Offshore of Cat Island, Mississippi in March 2010 Edition: 1 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: 563 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: https://pubs.usgs.gov/ds/563/ Description: Abstract: In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys east of Cat Island, Mississippi. The efforts were part of the USGS Gulf of Mexico Science Coordination partnership with the U. S. Army Corps of Engineers (USACE) to assist the Mississippi Coastal Improvements Program (MsCIP) and the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazards Susceptibility Project by mapping the shallow geological stratigraphic framework of the Mississippi Barrier Island Complex. The data collected will be used to create baseline bathymetry information that will address seafloor change. This report contains swath bathymetry and side scan sonar data collected aboard the R/V Survey Cat during Cruise 10CCT01. A combination of software packages was used to process and grid the data. This data series describes the methodology used and the resulting data projects. Purpose: This report serves as an archive of the processed swath bathymetry and side scan sonar data. Data products herein include gridded and interpolated surfaces, surface images, and x,y,z data products for both swath bathymetry and side scan sonar imagery. Additional files include trackline maps, navigation files, GIS files, Field Activity Collection System (FACS) logs, and formal FGDC metadata. Scanned images of the handwritten FACS logs are also provided as PDF files. Refer to the Acronyms page for expansion of acronyms and abbreviations used in this report. Supplemental_Information: These geophysical surveys will provide the data necessary for scientists to define, interpret, and provide baseline bathymetry and seafloor habitat for this area and to aid scientists in predicting future geomorpholocial changes of the islands with respect to climate change, storm impact, and sea-level rise. Furthermore, these data will provide information for barrier island restoration, particularly in Camille Cut, and provide protection for the historical Fort Massachusetts. For more information refer to . The USGS St. Petersburg Coastal and Marine Science Center assigns a unique identifier to each cruise or field activity. For example, 10CCT01 tells us the data were collected in 2010 for the Coastal Change and Transport (CCT) study and the data were collected during the first field activity for that project in that calendar year. Refer to for a detailed description of the method used to assign the field activity ID. Data were collected using a 26-foot Glacier Bay Catamaran. Side scan sonar and interferometric swath bathymetry data were collected simultaneously along the tracklines. The side scan sonar towfish was towed off the port side just slightly behind the vessel, close to the seafloor. The interferometric swath transducer was sled-mounted on a rail attached between the catamaran hulls. During the survey the sled is secured into position. Navigation was acquired with a CodaOctopus Octopus F190 Precision Attitude and Positioning System and differentially corrected with OmniSTAR. See the digital FACS equipment log for details about the acquisition equipment used. Both raw datasets were stored digitally and processed using SEA's Ltd. Swath Processor version 3.07 and CARIS HIPS and SIPS software version 7.0 in the St. Petersburg office. For more information on processing, refer to the Equipment and Processing page. Post-processing of the swath dataset revealed a motion artifact that is attributed to movement of the pole that the transducers are attached to in relation to the boat. The survey was forced to take place in the winter months, in which strong winds and rough waves contributed to a reduction in data quality. The rough seas contributed to both the movement of the pole and the very high noise base seen in the raw amplitude data of the side scan sonar. Chirp data were also collected during this survey and are archived separately. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100309 Beginning_Time: unknown Ending_Date: 20100317 Ending_Time: unknown Currentness_Reference: data collection interval Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -89.073360 East_Bounding_Coordinate: -88.956940 North_Bounding_Coordinate: 30.285989 South_Bounding_Coordinate: 30.203957 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:405c3645-583c-4dba-ba4f-c0e912fb8f61 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: elevation Theme_Keyword: location Theme_Keyword: oceans Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: bathymetry Theme_Keyword: interferometric sonar Theme_Keyword: marine geology Theme_Keyword: geology Theme_Keyword: coastal processes Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: trackline Theme_Keyword: SWATHplus Theme_Keyword: CodaOctopus F190 Theme_Keyword: swath bathymetry Theme_Keyword: USGS Theme_Keyword: interferometric swath bathymetry Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Mississippi Place_Keyword: Cat Island Place_Keyword: West Ship Island Place: Place_Keyword_Thesaurus: None Place_Keyword: GUIS Place_Keyword: Gulfport Ship Channel Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: water Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: None Access_Constraints: The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data. Use_Constraints: These data are not to be used for navigation Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747 x3058 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Data_Set_Credit: Nancy T. DeWitt, William R. Pfeiffer, Jim Flocks, Dana Wiese Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog version 9.3.1.3000 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy of the data is determined during data collection. This dataset is from a single cruise and therefore internally consistent. Methods are employed to maintain data collection consistency aboard various platforms. During mobilization, each piece of equipment (swath and sonar) is isolated to obtain internal and external offset measurements with respect to the survey platform. All the critical measurements are recorded manually and digitally and entered into their respective programs for calibration. Once calibration is complete and calibration status is considered acceptable then survey operations commence. Each system has a dedicated computer and efforts are made to utilize the same equipment and software versions. However, upgrades and changes occur and require additional setup, measurements, and notation. The swath transducer sonar head was sled-mounted between the catamaran pontoons. Offsets between the sonar head and the DGPS antennas were measured and entered into the F190 internal setup program. DGPS is always implemented for navigational accuracy. DGPS is normally provided through the OmniSTAR High Performance wide area GPS service unless otherwise noted. All swath bathymetry data was collected using the SEA Ltd., SWATHplus interferometric sonar system. All side scan sonar data was collected using the Klein 3900 system. Logical_Consistency_Report: his dataset was completed on a single and continuous cruise over four days from the same research vessel platform. Completeness_Report: This is a completed processed swath bathymetry surface in GeoTIFF format. This data provides a continuous and complete surface, however there may in some cases be data missing and inconsistent with reported tracklines. This is directly due to the exclusion of poor data, instrument failures. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The ship was navigated using Differential Global Positioning System (DGPS) obtained with the CodaOctopus Octopus F190 Precision Attitude and Positioning System using the F80 Series Windows software version 4.0.5. Two antennas received the integrated OmniSTAR differential correction. Unless noted, all DGPS data are referenced to WGS84. The swath transducer sonar head was sled-mounted between the catamaran pontoons. Offsets between the sonar head and the DGPS antennas were measured and entered into the F190 internal setup program. The horizontal accuracy of side scan sonar data is at the limit of OmniSTAR, which is within 20 cm. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 20 Horizontal_Positional_Accuracy_Explanation: cemtimeters Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Ship motion was measured using a the CodaOctopus Octopus F190 Precision Attitude and Positioning System. The interferometric sonar is an angle-measuring system; depth accuracy decreases with increasing horizontal range. The swath width of the interferometric sonar varied as a function of depth but generally achieved 5 times the water depth. Vertical accuracy is directly affected by the accuracy of both the navigation system and tidal measurments. A tidal zone model was supplied by NOAA and applied to the data referencing it to MLLW. Verified tide data from the Pascagoula, MS, station ID 8741533 and Gulfport, MS, station ID 8745557 were used with the model. Errors with the tidal zone model may be similar to the tidal zone range for this area, which is ~0.40 m. However, local effects in shallow waters like wind, waves, and storms may have an effect on the range in the short term. During the days of this survey simple average statistics of the verified tide data from both tide stations was a low of -0.15 m to a high of +0.33 m with a range of 0.48 m. Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Value: 0.05 Vertical_Positional_Accuracy_Explanation: meters Lineage: Process_Step: Process_Description: The SWATHplus raw data files (SXR) were processed using SEA Swath Processor version 3.07 to create SEA Swath Processed data files (SXP) and then imported into CARIS HIPS and SIPS version 7.0. The data were tidally corrected in CARIS HIPS and SIPS using a tide zone model supplied by NOAA with the verified tide data from Pascagoula, MS, station ID 8741533 and Gulfport, MS, station ID 8745557. The Swath Editor within the HIPS package was used to edit the data on a ping-by-ping basis, both in across- and along-track dimension. Spurious or erroneous data were removed. The HIPS software was used to create a BASE (Bathymetry Associated with Statistical Error) surface similar to a weighted grid at-10 m grid cell size. The 10-m BASE surface was exported to an ASCII file as x,y,z. The ASCII file was imported into ESRI's ArcMap version 9.3.1 and gridded using the Geostatistical Analyst Tool's radial basis functions. Process_Date: 20100930 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747 x3058 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Process_Step: Process_Description: This is the completed 50-m resolution grid of swath bathymetric data exported as point data. This shapefile is raster grid 10cct01_v2rbf_50m.tif converted to point data using ArcMap version 9.3.1 raster to point conversion tool. The table produced was then populated with XY fields using XToools Pro version 6. Process_Date: 2010 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747 x3058 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Process_Step: Process_Description: Keywords section of metadata optimized by adding theme keyword thesauri and associated keywords. Process_Date: 20180327 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Arnell S. Forde Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: aforde@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: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 178 Column_Count: 221 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 16 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -87.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 50 Ordinate_Resolution: 50 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.25722356300003 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Mean lower low water Depth_Resolution: 0.05 Depth_Distance_Units: meters Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 10cct01_v2_50m_grid.tif Entity_Type_Definition: ESRI ArcGIS 9.3 Entity_Type_Definition_Source: ESRI ArcMap 9.3 TIFF Detailed_Description: Entity_Type: Entity_Type_Label: 10cct01_v2rbf_50m_raster2point.shp Entity_Type_Definition: ESRI ArcGIS 9.3 Entity_Type_Definition_Source: ESRI ArcMap 9.3 shapefile Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI ArcGIS 9.3 Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: SHAPE Attribute_Definition: Point Geometry Attribute_Definition_Source: ESRI ArcGIS 9.3 Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: POINT_ID Attribute_Definition: Number Attribute_Definition_Source: ESRI ArcGIS 9.3 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 20773 Attribute: Attribute_Label: GRID_CODE Attribute_Definition: Depth in meters Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1.30 Range_Domain_Maximum: -12.33 Attribute: Attribute_Label: X Attribute_Definition: WGS84 UTM 16N Attribute_Definition_Source: World Geodtic System of 1984 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 300605 Range_Domain_Maximum: 611605 Attribute: Attribute_Label: Y Attribute_Definition: WGS84 UTM 16N Attribute_Definition_Source: World Geodtic System of 1984 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3343225 Range_Domain_Maximum: 3352075 Detailed_Description: Entity_Type: Entity_Type_Label: 10cct01_v2rbf_50m_raster2ascii.txt Entity_Type_Definition: ESRI ArcGIS 9.3 Entity_Type_Definition_Source: ESRI ArcMap 9.3 ASCII file Overview_Description: Entity_and_Attribute_Overview: 10cct01_v2rbf_50m.tif is the final, processed 50-m resolution swath bathymetry grid exported as a GeoTIFF file. Entity_and_Attribute_Detail_Citation: Overview_Description: Entity_and_Attribute_Overview: 10cct01_v2rbf_50m_raster2point.shp is 10cct01_v2rbf_50m.tif converted to a point shapefile. The shapefile was created using ArcMap version 9.3.1 raster to point conversion tool and the then populated with XY fields using XToools Pro version 6.0. The attributes for this file are listed in the entity and attribute section. Entity_and_Attribute_Detail_Citation: Overview_Description: Entity_and_Attribute_Overview: 10cct01_v2rbf_50m_raster2ascii.txt is 10cct01_v2rbf_50m.tif converted to a ASCII shapefile. The text file was created using ArcMap version 9.3.1 raster to ascii conversion tool. This text file is in an array format with header information at the top of the file. Entity_and_Attribute_Detail_Citation: Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Jim Flocks Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747 x3012 Contact_Electronic_Mail_Address: jflocks@usgs.gov Resource_Description: 10cct01_v2rbf_50m.tif Distribution_Liability: This DVD publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: TIFF File_Decompression_Technique: no compression applied Transfer_Size: 0.993 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/ds/563/software/arc/ Offline_Option: Offline_Media: CD-ROM Recording_Format: CDR/DVD Fees: None Custom_Order_Process: none Technical_Prerequisites: This shapefile was created for use with ESRI ArcGIS software. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Time_of_Day: unknown Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Jim Flocks Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747 x3012 Contact_Electronic_Mail_Address: jflocks@usgs.gov Resource_Description: 10cct01_v2rbf_50m_raster2point.shp Distribution_Liability: This DVD publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP File_Decompression_Technique: no compression applied Transfer_Size: 2.16 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/ds/563/software/arc/ Offline_Option: Offline_Media: CD-ROM Recording_Format: CDR/DVD Fees: none Custom_Order_Process: none Technical_Prerequisites: This shapefile was created for use with ESRI ArcGIS software. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Time_of_Day: unknown Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Jim Flocks Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747 x3012 Contact_Electronic_Mail_Address: jflocks@usgs.gov Resource_Description: 10cct01_v2rbf_50m_raster2ascii.txt Distribution_Liability: This DVD publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASCII File_Decompression_Technique: no compression applied Transfer_Size: 0.341 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/ds/563/software/arc/ Offline_Option: Offline_Media: CD-ROM Recording_Format: CDR/DVD Fees: none Custom_Order_Process: none Technical_Prerequisites: This shapefile was created for use with ESRI ArcGIS software. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Time_of_Day: unknown Metadata_Reference_Information: Metadata_Date: 20210922 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Nancy T. DeWitt Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 803-8747 x3058 Contact_Electronic_Mail_Address: ndewitt@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: The U.S. Geological Survey request that it be referenced as the originator of this dataset in any future products or research derived from these data. Metadata_Use_Constraints: The U.S. Geological Survey request that it be referenced as the originator of this dataset in any future products or research derived from these data. Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None