Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2018 Title: Sound Velocity Profiles, AML Minos X sound velocity profile data, collected during USGS field activity 2017-049-FA within Lake Powell, UT-AZ (PNG images, SVP text, and Esri point shapefile, GCS WGS 84). Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P90BU2VS Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.5066/P90BU2VS Online_Linkage: https://www.sciencebase.gov/catalog/item/5b97ca9ce4b0702d0e841ef3 Larger_Work_Citation: Citation_Information: Originator: Brian D. Andrews Originator: Wayne E. Baldwin Originator: Charles R. Worley Originator: Robert L. Baskin Originator: Jane F. Denny Originator: David S. Foster Originator: Barry J. Irwin Originator: Eric M. Moore Originator: Alex R. Nichols Publication_Date: 2018 Title: High-resolution geophysical data collected in Lake Powell Utah-Arizona, U.S. Geological Survey Field Activity 2017-049-FA Edition: 1.0 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P90BU2VS Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Andrews, B.D., Baldwin, W.E., Worley, C.R., Baskin, R.L., Denny, J.F., Foster, D.S., Irwin, B.J., Moore, E.M., and Nichols, A.R., 2018, High-resolution geophysical data collected in Lake Powell, Utah-Arizona, U.S. Geological Survey Field Activity 2017-049-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P90BU2VS. Online_Linkage: https://doi.org/10.5066/P90BU2VS Online_Linkage: https://www.sciencebase.gov/catalog/item/5b900656e4b0702d0e807395 Description: Abstract: High-resolution geophysical mapping of Lake Powell in the Glen Canyon National Recreation Area in Utah and Arizona was conducted between October 8 and November 15, 2017, as part of a collaborative effort between the U.S. Geological Survey and the Bureau of Reclamation to provide high-quality data needed to reassess the area-capacity tables for the Lake Powell reservoir. Seismic data collected during this survey can help to define the rates of deposition within the San Juan and Colorado Rivers, which are the main inflows to Lake Powell. These new data are intended to improve water budget management decisions that affect the natural and recreational resources of the reservoir. Multibeam echosounder bathymetry and backscatter data were collected along 2,312 kilometers of tracklines (331 square kilometers) of the lake floor to regionally define its depth and morphology, as well as the character and distribution of lake-floor sediments. Ninety-two kilometers of seismic-reflection profile data were also collected to define the thickness and structure of sediment deposits near the confluences of the San Juan and Colorado Rivers. Purpose: This dataset is used to display the locations of sound velocity profiles (SVP, also referred to as sound speed profiles), as well as the SVP data, collected during a 2017 USGS survey on Lake Powell in the Glen Canyon National Recreation Area of Utah and Arizona. The sound velocity profiles document water column sound speed variability during the survey, and were used during processing to account for refraction artifacts present within the multibeam bathymetric data. The dataset contains graphs of sound velocity vs. depth at each profile location, as well as a shapefile with the location in Geographic Coordinate System (GCS) WGS 84 latitude and longitude, the time of day, and date of collection. Supplemental_Information: Additional information on the field activity is available from https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-049-FA. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20171008 Ending_Date: 20171115 Currentness_Reference: data were collected on the following dates: 20171008-20171022 (Julian day 281-295); 20171024-20171109 (Julian day 297-313); 20171115 (Julian day (319). Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -111.482500 East_Bounding_Coordinate: -110.431667 North_Bounding_Coordinate: 37.835278 South_Bounding_Coordinate: 36.986667 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5b97ca9ce4b0702d0e841ef3 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Utah Water Science Center Theme_Keyword: UWSC Theme_Keyword: Bureau of Reclamation Theme_Keyword: BOR Theme_Keyword: National Park Service Theme_Keyword: NPS Theme_Keyword: Department of the Interior Theme_Keyword: DOI Theme_Keyword: Colorado River Storage Project Theme_Keyword: CRSP Theme_Keyword: shapefile Theme_Keyword: sound velocity profile Theme_Keyword: AML Minos X Theme_Keyword: Esri shapefile Theme_Keyword: field activity number 2017-049-FA Theme_Keyword: R/V Stephens Theme_Keyword: SVP Theme_Keyword: SSP Theme_Keyword: sound speed profile Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: inlandWaters Theme_Keyword: geoscientificInformation Theme_Keyword: location Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: profiles Theme_Keyword: sound velocity Theme_Keyword: limnology Theme_Keyword: navigational data Theme_Keyword: geospatial datasets Place: Place_Keyword_Thesaurus: None Place_Keyword: United States of America Place_Keyword: State of Utah Place_Keyword: State of Arizona Place_Keyword: Garfield County Place_Keyword: San Juan County Place_Keyword: Kane County Place_Keyword: Coconino County Place_Keyword: Lake Powell Place_Keyword: Glen Canyon National Recreation Area Place_Keyword: Glen Canyon Place_Keyword: Colorado River Place_Keyword: Great Bend Place_Keyword: San Juan River Place_Keyword: Escalante River Place_Keyword: Hite Place_Keyword: Good Hope Bay Place_Keyword: Bullfrog Place_Keyword: Bullfrog Bay Place_Keyword: Halls Crossing Place_Keyword: Halls Bay Place_Keyword: Rainbow Bridge National Monument Place_Keyword: Dangling Rope Place_Keyword: Rock Creek Bay Place_Keyword: Friendship Bay Place_Keyword: Last Chance Bay Place_Keyword: Padre Bay Place_Keyword: Gunsight Bay Place_Keyword: Warm Creek Bay Place_Keyword: Wahweap Place_Keyword: Wahweap Bay Place_Keyword: Antelope Canyon Place_Keyword: Navajo Canyon Place_Keyword: Page Place_Keyword: Glen Canyon Dam Temporal: Temporal_Keyword_Thesaurus: none Temporal_Keyword: 2017 Access_Constraints: none Use_Constraints: Public domain data from the U.S. Government are freely re-distributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Brian Andrews Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: Massachusetts Postal_Code: 02543-1598 Country: US Contact_Voice_Telephone: 508-548-8700 x2348 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bandrews@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/5b97ca9ce4b0702d0e841ef3/?name=2017-049-FA_SVPdata_browse.jpg Browse_Graphic_File_Description: Thumbnail image of sound speed profile locations collected within Lake Powell, UT-AZ. Browse_Graphic_File_Type: JPEG Data_Quality_Information: Logical_Consistency_Report: Sound velocity profiles were acquired with an AML Minos X SVPT from 2017108–20171022 (JD281–295) and 20171024 to 20171115 (JD 297-319). No data were collected on 20171023 (JD 296) while the base of operations was moved from Bullfrog, UT in the northeast to Page, AZ in the southwest. No sound speed profiles were collected between 20171110 and 20171114 (JD 314-318) while survey operations were suspended due to equipment malfunction. These data only contain the downcast data collection. Completeness_Report: Each sound velocity profile (56 total) collected during survey 2017-049-FA is represented by an SVP formatted ASCII text file (see description below in the entity and attribute overview section), a PNG image file, and a feature point location in the Esri shapefile. Profile 2017-10-12_15-33-12 was faulty and excluded during QA/QC processing. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: DGPS navigation data for the sound velocity profiles were acquired using the WGS 84 coordinate system with an Applanix POS MV Wavemaster (model 220, V5) with two AeroAntenna Technologies GPS antennas located at either end of a 2-m baseline, which was oriented fore and aft and mounted atop the MBES pole, approximately midships on the starboard side of the vessel. A Hypack (v. 17.0.26.0) target was created to record the position of each SVP station, and the geographic coordinates were manually entered into the headers of the final Hypack .vel and Caris .svp formatted ASCII files. While the horizontal position accuracy is thought to be within 0.5 - 2 meters for the DGPS position solutions, we consider the sound velocity profile positions to be within 2-4 m, since the location of downrigger used to deploy the SVP relative to the MBES pole, approximately 1.5 meters aft, was not accounted for. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Minos X SVPT depths are calculated by the AML SeaCast software(v. 4.4), which converts pressure sensor readings to depth using the standard formulas described in Fofonoff, N.P.and Millard, R.C., Jr., 1988, Algorithms for computation of fundamental properties of seawater, UNESCO Technical Papers in Marine Science, No. 44. The depths are thought to be accurate to within 1 meter. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: unpublished material Title: sound velocity data Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20171008 Ending_Date: 20171115 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: raw sound velocity data Source_Contribution: Sound velocity profiles were collected using an AML Minos X SVPT deployed using an electric downrigger mounted on the port quarter of the R/V Stephens. The clutch on the downrigger was released to allow for free fall deployment of the instrument to the user defined depth above the lake floor, followed by motorized retrieval. Three AML Oceanographic XChange probes attached to the Minos X body logged sound velocity, pressure, and temperature data during each deployment. AML SeaCast software(v. 4.4) was used to read the profile data from the Minos X, edit the profile to preserve only the downcast portion of the deployment, and export the profile Caris .svp ASCII formatted files. DGPS navigation data for the sound velocity profiles were acquired using the WGS 84 coordinate system with an Applanix POS MV Wavemaster (model 220, V5) with two AeroAntenna Technologies GPS antennas located at either end of a 2-m baseline, which was oriented fore and aft and mounted atop the MBES pole, approximately midships on the starboard side of the vessel. A Hypack (v. 17.0.26.0) target was created to record the position of each SVP station, and the geographic coordinates were manually entered into the headers of the final Hypack .vel and Caris .svp formatted ASCII files. Process_Step: Process_Description: PROCESS STEP 1: SVP profile acquisition during survey: Sound velocity profiles were collected one to three times per survey day using the AML Minos X SVPT. This process step and all subsequent process steps were conducted by the same person - Wayne Baldwin. Process_Date: 201711 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne E. Baldwin Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700 x2226 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Process_Step: Process_Description: PROCESS STEP 2: Plot the SVP data and import into Spatialite database: A python script was used to read the SVP data and plot the sound speed profile as speed of sound (meter/second) versus depth (meters). Position, date, time, and profile id were pulled from the SVP header and written into the image (PNG) for reference. Within the same script, the position, Julian day, time, and profile id were also imported into a Spatialite (version 4.3.0) enabled SQLite (version 3.21.0) database table. The geographic positions were used to create point geometries for the station locations, and additional fields indicating SurveyID, VesselID, DeviceID, and SVP_Image were added. Process_Date: 201711 Process_Step: Process_Description: PROCESS STEP 3: Create Esri shapefile containing the point data: The SVP point features were added (Add Data) into ArcMap (version 10.3.1) from the SQLite database, then exported (Right click on database feature class >Data>Export Data) to the new Esri point shapefile 2017-049-FA_SVPdata.shp. Process_Date: 201711 Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200806 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: vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: point Point_and_Vector_Object_Count: 56 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2017-049-FA_SVPdata Entity_Type_Definition: Sound velocity profile locations for survey 2017-004-FA collected within Lake Powell, UT-AZ. Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Lon Attribute_Definition: Decimal degree longitude value in GCS WGS 84. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -111.482500 Range_Domain_Maximum: -110.431667 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: Lat Attribute_Definition: Decimal degree latitude value in GCS WGS 84. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 36.986667 Range_Domain_Maximum: 37.835278 Attribute_Units_of_Measure: degrees Attribute_Measurement_Resolution: .000001 Attribute: Attribute_Label: SVP Attribute_Definition: Name of velocity profile used to distinguish between casts. Profiles are named by the Date and UTC time of the profile collection in the format YYYY-MM-DD_HH-MM-SS. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: character set Attribute: Attribute_Label: Date Attribute_Definition: Month/day/year when the SVP cast was collected. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: character set Attribute: Attribute_Label: JD_UTC Attribute_Definition: Julian day and UTC time when the SVP cast was collected in the format: JD:HH:MM:SS; Julian day is the integer number (although recorded here in text string format) representing the interval of time in days since January 1 of the year of collection. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: character set Attribute: Attribute_Label: SurveyID Attribute_Definition: WHCMSC field activity identifier (e.g. "2017-049-FA" where 2017 is the survey year, 049 is survey number of that year, and FA is field activity). Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: character set Attribute: Attribute_Label: VehicleID Attribute_Definition: Survey vessel name. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: character set Attribute: Attribute_Label: DeviceID Attribute_Definition: Device used to collect sound speed profile data. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: character set Attribute: Attribute_Label: SVP_Image Attribute_Definition: Name of the PNG image file associated with the SVP cast. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: Character set Overview_Description: Entity_and_Attribute_Overview: The PNG images can be hyperlinked to their shapefile location in ArcGIS. The graphs show depth in meters below the water suface on the y-axis and speed of sound in meters per second on the x-axis. In addition to the graphs, the ASCII data is also available in SVP files. The format of the SVP ASCII files is as follows: Header row 1: Caris SVP format version number Header row 2: SVP file name Header row 3: Section heading for the profile, containing: The year and Julian day number (YYYY-DDD) the profile was recorded, the UTC time (HH:MM:SS) the profile was recorded, and latitude and longitude coordinates for the profile position in degrees, minutes, seconds format (DD:MM:SS). Remaining rows: column data of depth (meters) and speed of sound (meters per second) space delimited. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center Address: Building 810 Address: Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: USGS data release 2017-049-FA AML Minos X SVP data from Lake Powell, UT-AZ: includes the shapefile 2017-049-FA_SVPdata.shp, the zip archive 2017-0049-FA_SVP_Images.zip containing 56 PNG images that represent all sound velocity profiles graphically, the zip archive 2017-049-FA_SVP_ASCII.zip containing 56 SVP ASCII files that represent all sound velocity profiles, the browse graphic 2017-049-FA_SVPdata_browse.jpg, and Federal Geographic Data Committee (FGDC) Content Standards for Digital Geospatial Metadata (CSDGM) metadata files (2017-049-FA_SVPdata_meta.*) in XML, HTML, FAQ, and text formats. Distribution_Liability: Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm 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: Shapefile Format_Version_Number: ArcMap 10.3.1 Format_Specification: shapefile Format_Information_Content: Shapefile of SVP sample locations collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center on Lake Powell, UT-AZ and the associated metadata. File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5b97ca9ce4b0702d0e841ef3 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5b97ca9ce4b0702d0e841ef3 Network_Resource_Name: https://doi.org/10.5066/P90BU2VS Access_Instructions: The first link is to the page containing the data, the second link downloads all data available from the page as a zip file, and the third link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: TEXT Format_Version_Number: 1.0 Format_Specification: Caris ASCII file format (SVP) Format_Information_Content: The 7zip (version 16.04) file contains ASCII text files of SVP sound speed profile data collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center on Lake Powell and the associated metadata. File_Decompression_Technique: use winzip, 7zip, peazip or pkunzip Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5b97ca9ce4b0702d0e841ef3 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5b97ca9ce4b0702d0e841ef3 Network_Resource_Name: https://doi.org/10.5066/P90BU2VS Access_Instructions: The first link is to the page containing the data, the second link downloads all data available from the page as a zip file, and the third link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: PNG Format_Version_Number: Matplotlib (version 2.0.0) Format_Specification: portable network graphic (PNG) Format_Information_Content: The 7zip (version 16.04) file contains images of the SVP sound speed profiles collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center on Lake Powell, UT-AZ and the associated metadata. File_Decompression_Technique: use winzip, 7zip, peazip or pkunzip Transfer_Size: 3 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5b97ca9ce4b0702d0e841ef3 Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5b97ca9ce4b0702d0e841ef3 Network_Resource_Name: https://doi.org/10.5066/P90BU2VS Access_Instructions: The first link is to the page containing the data, the second link downloads all data available from the page as a zip file, and the third link is to the publication landing page. Digital_Form: Digital_Transfer_Information: Format_Name: WMS Format_Information_Content: Shapefile 2017-049-FA_SVPdata.shp provided through a WMS (web mapping service). Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalogMaps/mapping/ows/5b97ca9ce4b0702d0e841ef3?service=wms&request=getcapabilities&version=1.3.0 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5b97ca9ce4b0702d0e841ef3 Network_Resource_Name: https://doi.org/10.5066/P90BU2VS Access_Instructions: The first link in the network resources accesses the data through a mapping service, the second is to the page containing the data, and the third link is to the publication landing page. Fees: none Technical_Prerequisites: For the shapefile and web services data, the user must have software capable of reading shapefile format, or GIS software capable of utilizing web mapping or feature services. The ASCII SVP files can be read with a text editor. PNG files can be viewed with any PNG image viewing software. The Zip files must be uncompressed to utilize the ASCII text files or view the images. Metadata_Reference_Information: Metadata_Date: 20200806 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Wayne E. Baldwin Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: (508) 548-8700 x2226 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: wbaldwin@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time