Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Originator: Nancy T. DeWitt Originator: James G. Flocks Originator: William R. Pfeiffer Originator: James N. Gibson Originator: Dana S. Wiese Publication_Date: 20111001 Title: rm10cct03_mb_50m.tif: 50-m interpolated bathymetry grid of the entire survey from USGS Cruise 10cct03 Edition: rm10CCT03_mb_50m Geospatial_Data_Presentation_Form: remote-sensing image Series_Information: Series_Name: USGS Data Series Publication Issue_Identification: DS671 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: http://pubs.usgs.gov/ds/671 Online_Linkage: http://pubs.usgs.gov/ds/671/software/arc/ Online_Linkage: http://pubs.usgs.gov/ds/671/html/data_products/multibeam/ Description: Abstract: In April of 2010, the U.S. Geological Survey (USGS) conducted a geophysical survey from the east end of West Ship Island, MSiss., extending to the middle of Dauphin Island, Ala. This survey had a dual purpose: (1) to interlink previously conducted nearshore geophysical surveys (shoreline to ~2 kilometers, km) with those of offshore surveys (~2 km to ~9 km) in the ares and (2) to extend the geophysical survey to include a portion of the Dauphin Island nearshore zone. 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. Purpose: This report serves as an archive of the processed multibeam bathymetry and side scan sonar (SSS) data. Data products herein include gridded and interpolated digital depth surfaces, seabed surface backscatter imagery, and x,y,z data products for both multibeam bathymetry and side scan sonar imagery. Additional files include trackline maps, navigation files, Geograpahic Infromation System (GIS) files, Field Activity Collection System (FACS) logs, and formal Federal Geographic Data Committee (FGDC) metadata. Scanned images of the handwritten FACS logs and digital FACS logs are also provided as PDF files. Refer to the Acronyms page for expansion of acronyms and abbreviations used in this report or hold the cursor over an acronym for a pop-up explanation. 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 . Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20100417 Beginning_Time: unknown Ending_Date: 20100428 Ending_Time: unknown Currentness_Reference: data collection interval Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -88.865328 East_Bounding_Coordinate: -88.176509 North_Bounding_Coordinate: 30.246283 South_Bounding_Coordinate: 30.153961 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:7f655754-fa34-47cb-bdea-346a713f7795 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: elevation Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: trackline Theme_Keyword: bathymetry Theme_Keyword: USGS Theme_Keyword: multibeam Theme_Keyword: RESON Theme_Keyword: Seabat 8125 Theme_Keyword: Applanix POS MV Theme_Keyword: Trimble DSM 212 Theme_Keyword: GeoTIFF Theme_Keyword: Continuously Operating Reference Station (CORS) Theme_Keyword: U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center Theme_Keyword: U.S. Army Corps of Engineers (USACE) Mobile Alabama District Theme_Keyword: Gulf Islands National Seashore (GUIS) Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: distributions Theme_Keyword: bathymetry and elevation Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: multibeam echo sounder Theme_Keyword: marine geophysics Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: multibeam sonar Theme_Keyword: bathymetry measurement Theme_Keyword: bathymetry Theme_Keyword: marine geophysics Place: Place_Keyword_Thesaurus: GNIS Place_Keyword: Mississippi Place_Keyword: West Ship Island Place_Keyword: Horn Island Place_Keyword: Petit Bois Pass Place_Keyword: Dauphin Island Stratum: Stratum_Keyword_Thesaurus: General Stratum_Keyword: water Temporal: Temporal_Keyword_Thesaurus: General 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, James G. Flocks, William R. Pfeiffer, James N. Gibson, Dana Wiese Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000; rm10cct03_mb_50m.txt; 1.65 MB 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. HYPACK, Inc., HYPSWEEP version 10 was used for the multibeam data acquisition, system calibration,and data post-processing. A patch test was performed at the beginning of the survey to calibrate the SEABAT 8125 and included latency, roll, pitch, and yaw. This involved collecting multibeam data along lines over a sloping surface for the latency, pitch, and yaw tests and over a flat surface for the roll test. The resulting offsets from the patch test were applied to the hardware configuration file prior to survey data acquisition. The Applanix POS MV is not a gyro and therefore did not need calibration. The RESON SeaBat 8125 multibeam transducer head was mounted on a retractable strut-arm that is lowered between the catamaran hulls. Offsets between the sonar head and the DGPS antennas were measured and entered into the respective program. DGPS is always implemented for navigational accuracy. During data acquisition, the differentially corrected positions supplied through the Trimble DSM 212 interface were recorded in the WGS84 datum. Ship heading and motion (roll, pitch, heave) were measured by the Applanix POS MV motion unit. Sound velocity was recorded at the multibeam sonar head. Additional sound velocity casts were conducted at the start and finish of each survey day and as needed throughout the survey. All multibeam bathymetry data were collected using the RESON SeaBat 8125. All side scan sonar data were collected using the Klein 3900 system. Logical_Consistency_Report: This dataset was completed on the same research vessel platform. Completeness_Report: This is a complete processed multibeam bathymetry grid in GeoTIFF format. These data provide 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 or instrument failures. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Differential navigation was acquired using a local National Geodetic Survey (NGS) Continuously Operating Reference Station (CORS) beacon that broadcasts carrier phase and code range measurements that are captured in real-time using the Applanix Position and Orientation System for Marine Navigation (POS MV). The multibeam bathymetry and side scan sonar data were collected simultaneously using HYSWEEP version 10 and SonarPro version 11.3, respectively. The multibeam bathymetry and the side scan sonar data were collected with separate instruments but utilized the same navigation string from the Applanix POS MV. Unless noted, all DGPS data are referenced to WGS84. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 10 Horizontal_Positional_Accuracy_Explanation: centimeters Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Ship motion was measured by the Applanix POS MV. The multibeam bathymetry was collected using the RESON SeaBat 8125 System. This system uses a frequency of 455 kHz with a maximum swath angle of 120 degrees. Vertical accuracy is directly affected by the accuracy of both the navigation system and tidal measurements. Data for tide correction were obtained from automated tide gages maintained by the USACE and applied within MBMAX. Quantitative_Vertical_Positional_Accuracy_Assessment: Vertical_Positional_Accuracy_Value: 0.05 Vertical_Positional_Accuracy_Explanation: meters Lineage: Process_Step: Process_Description: Multibeam data post processing was completed at the USACE in Mobile, Ala., using HYPACK Inc., HYSWEEP version 10. The raw HSX data files were imported into MBMAX editor for post-processing. Data for tide correction was obtained from automated tide gages maintained by the USACE and applied at this point within MBMAX. The sound velocity cast data were also applied in MBMAX at this point. The processed x,y,z data files were exported in ASCII format and referenced to WGS84 for the horizontal datum and MLLW for the vertical datum. This dataset was then transferred to the St. Petersburg Science Center for gridding and incorporation into a larger bathymetric dataset for the GUIS. The x,y,z ASCII files were imported into ESRI's ArcMap version 9.3.1 and gridded using the Geostatistical Analyst Tool's radial basis functions. Process_Date: 20111001 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 rm10cct03_mb_50m.tif converted to point data using ArcMap version 9.3.1 raster to point conversion tool. The table produced was then populated with X,Y fields using XToools Pro version 6. Process_Date: 20111001 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 named rm10cct03_mb_50m.tif converted to ASCII data using ArcMap version 9.3.1 raster to ASCII conversion tools. Process_Date: 20111001 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 for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170214 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alan O. Allwardt Contact_Position: Contractor -- Information Specialist Contact_Address: Address_Type: mailing and physical address Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7551 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: aallwardt@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: 187 Column_Count: 1324 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: 50.000000 Ordinate_Resolution: 50.000000 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: 0.46 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: rm10cct03_mb_50m.tif Entity_Type_Definition: ESRI ArcGIS 9.3 Entity_Type_Definition_Source: ESRI ArcMap 9.3 TIFF Detailed_Description: Entity_Type: Entity_Type_Label: rm10cct03_mb_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: 63710 Attribute: Attribute_Label: GRID_CODE Attribute_Definition: depth in meters Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -15.2834 Range_Domain_Maximum: -2.45 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: 320534 Range_Domain_Maximum: 386684 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: 3337337 Range_Domain_Maximum: 3346637 Detailed_Description: Entity_Type: Entity_Type_Label: rm10cct03_mb_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: This file is the completed processed 50-m resolution multibeam bathymetry grid as a GeoTIFF file. Entity_and_Attribute_Detail_Citation: http://ngom.usgs.gov/gomsc/mscip/index.html Overview_Description: Entity_and_Attribute_Overview: This is file rm10cct03_mb_50m.tif converted to a point shapefile named 10cct03_mb_50m_raster2point.shp. The shapefile was created using ArcMap version 9.3.1 raster to point conversion tool and then populated with X,Y fields using XToools Pro version 6.0. Entity_and_Attribute_Detail_Citation: http://ngom.usgs.gov/gomsc/mscip/index.html Overview_Description: Entity_and_Attribute_Overview: This is file rm10cct03_mb_50m.tif converted to a ASCII shapefile named rm10cct03_mb_50m_raster2ascii.txt. The text files was created using ArcMap version 9.3.1 raster to ASCII conversion tool. This text file is array format with header information at the top of the file. Entity_and_Attribute_Detail_Citation: http://ngom.usgs.gov/gomsc/mscip/index.html 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: Downloadable Data File Name = rm10cct03_mb_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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: TIFF File_Decompression_Technique: no compression applied Transfer_Size: 2.93 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/671/html/data_products/multibeam/ Offline_Option: Offline_Media: DVD Recording_Format: CDR/DVD Fees: None Custom_Order_Process: none Technical_Prerequisites: image viewer Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 20111001 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: Downloadable Data File Name = rm10cct03_mb_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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP File_Decompression_Technique: no compression applied Transfer_Size: 6.10 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/671/html/data_products/multibeam/ Offline_Option: Offline_Media: DVD 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: 20111001 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: Downloadable Data File Name = rm10cct03_mb_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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASCII File_Decompression_Technique: no compression applied Transfer_Size: 1.65 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/671/html/data_products/multibeam/ Offline_Option: Offline_Media: DVD 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: 20111001 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: FGDC Content Standards 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