CCB_BackscatterTracklines: Survey lines along which acoustic backscatter data were acquired using a Klein 3000 sidescan sonar and a SWATHplus interferometric sonar offshore of Massachusetts within the northern Cape Cod Bay survey area (ESRI Shapefile, Geographic, WGS84).

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 2010

Title:

CCB_BackscatterTracklines: Survey lines along which acoustic backscatter data were acquired using a Klein 3000 sidescan sonar and a SWATHplus interferometric sonar offshore of Massachusetts within the northern Cape Cod Bay survey area (ESRI Shapefile, Geographic, WGS84).

Edition: 1.0

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2010-1006

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://pubs.usgs.gov/of/2010/1006/GIS/shapefile/CCB_BackscatterTracklines.zip>

Online_Linkage: <https://pubs.usgs.gov/of/2010/1006/html/appendix1.html>

Larger_Work_Citation:

Citation_Information:

Originator: Brian D. Andrews

Originator: Seth D. Ackerman

Originator: Wayne E. Baldwin

Originator: Walter A. Barnhardt

Publication_Date: 2010

Title:

Geophysical and Sampling Data from the Inner Continental Shelf: Northern Cape Cod Bay, Massachusetts.

Edition: 1.0

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2010-1006

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: http//pubs.usgs.gov/of/2010/1006/

Description:

Abstract:

These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center (WHCMSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of sea-floor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters of coastal Massachusetts, primarily in water depths of 3-30 meters deep. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>). The data collected in the study area located in Northern Cape Cod Bay Massachusetts includes high-resolution geophysics (bathymetry, backscatter intensity, and seismic reflection), and ground validation (sediment samples, video tracklines, and bottom photographs). The data were collected during five separate surveys conducted between 2006 and 2008 and cover 480 square kilometers of the inner continental shelf.

More information about the individual USGS surveys conducted as part of the northern Cape Cod Bay project can be found on the Woods Hole Coastal and Marine Science Center Field Activity webpage:

06012: <http://quashnet.er.usgs.gov/data/2006/06012/> 07001: <http://quashnet.er.usgs.gov/data/2007/07001/> 07002: <http://quashnet.er.usgs.gov/data/2007/07002/> 07003: <http://quashnet.er.usgs.gov/data/2007/07003/> 08002: <http://quashnet.er.usgs.gov/data/2008/08002/>

Purpose:

The purpose of these data is to provide the trackline navigation and filenames of the 3,009 km of acoustic backscatter data acquired using a Klein 3000 sidescan sonar and a SWATHplus interferometric sonar in the northern Cape Cod Bay survey area.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20060816; 20070429; 20070725; 20080429

Ending_Date: 20060823; 20070503; 20070807; 20080507

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.643112

East_Bounding_Coordinate: -70.112701

North_Bounding_Coordinate: 42.093597

South_Bounding_Coordinate: 41.931839

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: CMGP

Theme_Keyword: Woods Hole Coastal and Marine Science Center

Theme_Keyword: WHCMSC

Theme_Keyword: Seafloor

Theme_Keyword: Marine Geology

Theme_Keyword: field activity serial number 06012

Theme_Keyword: field activity serial number 07001

Theme_Keyword: field activity serial number 07002

Theme_Keyword: field activity serial number 08002

Theme_Keyword: field activity number 2006-012-FA

Theme_Keyword: field activity number 2007-001-FA

Theme_Keyword: field activity number 2007-002-FA

Theme_Keyword: field activity number 2008-002-FA

Theme_Keyword: sidescan

Theme_Keyword: navigation tracklines

Theme_Keyword: sonar navigation

Theme_Keyword: sidescan-sonar

Theme_Keyword: sonar

Theme_Keyword: Klein

Theme_Keyword: Klein 3000

Theme_Keyword: k3k

Theme_Keyword: acoustic backscatter

Theme_Keyword: SEA, Ltd. SWATHplus

Theme_Keyword: interferometry

Theme_Keyword: R/V Megan T. Miller

Theme_Keyword: R/V Rafael

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: oceans

Theme_Keyword: oceans and coastal

Theme_Keyword: oceans and estuaries

Theme_Keyword: location

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: United States

Place_Keyword: North America

Place_Keyword: Atlantic Ocean

Place_Keyword: Gulf of Maine

Place_Keyword: Cape Cod Bay

Place_Keyword: Massachusetts Bay

Place_Keyword: Duxbury

Place_Keyword: Provincetown

Stratum:

Stratum_Keyword_Thesaurus: General

Stratum_Keyword: Seafloor

Stratum_Keyword: Surface

Temporal:

Temporal_Keyword_Thesaurus: General

Temporal_Keyword: 2006

Temporal_Keyword: 2007

Temporal_Keyword: 2008

Access_Constraints: None

Use_Constraints:

Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the source of this information.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews

Contact_Organization: U.S. Geological Survey

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

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://pubs.usgs.gov/of/2010/1006/GIS/browse_jpg/CCB_BackscatterTracklines.jpg>

Browse_Graphic_File_Description: Thumbnail image of backscatter tracklines

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.1850

Cross_Reference:

Citation_Information:

Originator: Walter A. Barnhardt

Originator: Brian D. Andrews

Originator: Bradford Butman

Publication_Date: 2006

Title:

High-Resolution Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2005-1293

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <https://pubs.usgs.gov/of/2005/1293/>

Cross_Reference:

Citation_Information:

Originator: Seth D. Ackerman

Originator: Bradford Butman

Originator: Walter A. Barnhardt

Originator: William W. Danforth

Originator: James M. Crocker

Publication_Date: 2006

Title:

High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2006-1008

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <https://pubs.usgs.gov/of/2006/1008/>

Cross_Reference:

Citation_Information:

Originator: Walter A. Barnhardt

Originator: Brian D. Andrews

Originator: Seth D. Ackerman

Originator: Wayne E. Baldwin

Originator: Christopher J. Hein

Publication_Date: 2009

Title:

High-Resolution Geological Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2007-1373

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <https://pubs.usgs.gov/of/2007/1373/>

Cross_Reference:

Citation_Information:

Originator: Walter A. Barnhardt

Originator: Seth D. Ackerman

Originator: Brian D. Andrews

Originator: Wayne E. Baldwin

Publication_Date: 2010

Title:

Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2009-1072

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <https://pubs.usgs.gov/of/2009/1072/>

Cross_Reference:

Citation_Information:

Originator: William W. Danforth

Publication_Date: 1997

Title:

XSonar/ShowImage: A complete system for rapid sidescan-sonar processing and display.

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 97-686

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey

Online_Linkage: <http://pubs.er.usgs.gov/usgspubs/ofr/ofr97686>

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: All attributes were checked in a consistent manner.

Logical_Consistency_Report:

Any spurious data points were removed during processing. Duplicate names may exist for the FILENAME attribute because this is made up of data from multiple surveys; however further querying the data by SURVEY attribute will distinguish a unique trackline for each record in this spatial dataset.

Completeness_Report:

Only the subset of sidescan-sonar trackline navigation data collected during field activities 06012 and 07001 that are within the northern Cape Cod Bay study area between Duxbury Beach and Provincetown have been included in this spatial dataset. This dataset includes all the tracklines collected during field activities 07002 and 08002.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Field activities 06012 and 07002: The Klein 3000 towfish was deployed from the stern A-frame of the R/V Megan T. Miller. Real-time kinematic (RTK) GPS navigation data were provided by an Ashtech Z-Extreme receiver (an Ashtech BR2G DGPS was used as a backup system) and recorded to the raw data files (XTF) via the Klein SonarPro (version 9.6 & 10.0) acquisition software. During some portions of the survey, technical difficulties caused the GPS systems to malfunction and lose the "fixed" RTK signal. When this occurred, the navigation system generally defaulted to a "float" RTK or DGPS signal, or the navigation was lost. When possible, surveying was halted until a reliable GPS signal was restored. A digital cable counter attached to the winch used to deploy the sidescan-sonar towfish measured changes in the amount of cable extended from the A-frame and updated the cable out parameter in SonarPro. Using the cable out value and linear offset between the A-frame and the RTK-GPS antenna (mounted mid-ship on the starboard side directly above the SWATHplus transducers), Sonar Pro calculated towfish layback positions in real time and recorded them to the XTF file headers. A conservative estimate of positional accuracy is ± 10 m, but when the navigation system was providing the "fixed" RTK signal, positional accuracy is likely < 1 m. Positional uncertainty arises because layback calculations do not account for fish motion behind the vessel, which is caused by sea state and vessel speed induced changes in the angle and scope of the tow cable.

Field Activity 07002 SEA SWATHplus backscatter: The winch used to deploy and retrieve the Klein 3000 towfish was inoperable between Aug 1-2, 2007. During this time, the acoustic backscatter collected with the 117 kHz SEA SWATHplus interferometric sonar was used to fill the gap in the Klein 3000 backscatter. The SWATHplus transducers were mounted on a rigid pole, approximately 2.6 m below the water line, along the starboard side of the R/V Megan T. Miller. Real-time kinematic (RTK) GPS navigation data were provided by an Ashtech Z-Surveyor Extreme receiver (an Ashtech BR2G DGPS was used as a backup navigation system) and recorded to the raw data files (SXR) via the SWATHplus (version 2.07) acquisition software. A conservative estimate of positional accuracy is likely <1 m.

Field activities 07001 and 08002: The Klein 3000 towfish was deployed from a davit on the port side aft on the R/V Rafael at a fixed distance that was accounted for during acquisition. Real-time kinematic (RTK) GPS navigation data were provided by an Ashtech Z-Surveyor Extreme receiver and recorded to the raw data files (XTF) via the Klein SonarPro (version 9.6 and 10.0) acquisition software. A conservative estimate of positional accuracy is ± 10 m, but when the navigation system was providing the "fixed" RTK signal, positional accuracy is likely <1 m.

Lineage:

Source_Information:

Source_Contribution:

Acoustic backscatter data acquisition for field activities 06012 and 07002: The Klein 3000 towfish was deployed from the stern A-frame of the R/V Megan T. Miller. A digital cable counter attached to the winch used to deploy the sidescan-sonar towfish measured changes in the amount of cable extended from the A-frame and updated the "cable out" parameter in SonarPro acquisition software (version 9.6). During survey 07002 The winch used to deploy and retrieve the Klein 3000 towfish was inoperable between Aug 1and 2, 2007. During this time, the acoustic backscatter collected with the 117 kHz SEA SWATHplus interferometric sonar was used to fill the gap in the Klein 3000 backscatter. The SWATHplus transducers were mounted on a rigid pole, approximately 2.6 m below the water line, along the starboard side of the R/V Megan T. Miller

Acoustic backscatter data acquisition for field activities 07001 and 08002: The Klein 3000 towfish was deployed from a davit on the port side of the R/V Rafael approximately 1 m astern and 0.5 m below the water surface.

Swath width was 100 m either side of the vessel (200 m total) for field activities 06012, 07001 and 08002. Swath width for field activity 07002 was increased to 150 m range (300 m total) because tracklines we spaced 150 m apart.

Process_Step:

Process_Description:

Navigation was extracted at a 1 minute interval from the raw sidescan sonar data (XTF format) in XSonar (version: 1.1) using the 'demultiplex' function (Danforth and others, 1991). The ASCII navigation from Xsonar was and concatenated for each survey (using shell scripts convertXsonarNav (no version) and Xsonar2ArcNav (no version)) into comma-separated value (CSV) text files with the following attributes: East, North, Julian Day, Line, Lon, Lat. Separate CSV files were generated for each of the four geophysical surveys.

Process_Date: 2009

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews

Contact_Organization: U.S. Geological Survey

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2348

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: bandrews@usgs.gov

Process_Step:

Process_Description:

In ArcCatalog (version 9.3), the ASCII navigation file in CSV format for each survey was converted to a point feature class using ArcCatalog (version 9.3) by right-clicking on the comma separated text file -- Create Feature Class -- from XY table. {output file: "SurveyName"_k3k_navpts.shp in geographic coordinates].

Process_Date: 2009

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews

Contact_Organization: U.S. Geological Survey

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2348

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: bandrews@usgs.gov

Process_Step:

Process_Description:

VAC Extras tool (version: 2.04 FeatConv - Points to Line v2; USGS in-house software) was then used within ArcMap (version 9.3) to convert the point shapefile for each survey into a polyline shapefile. Text attributes for "Survey", "Sonar", and "Mosaic" were added to each shapefile and the values were calculated using the "Field Calculator" in the context menu in ArcCatalog (version 9.3). The backscatter tracklines from each of the four surveys were merged into one shapefile (CCB_BackscatterTracklines.shp) using the "Merge" tool in ArcToolbox (version 9.3).

Process_Date: 2009

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews

Contact_Organization: U.S. Geological Survey

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2348

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: bandrews@usgs.gov

Process_Step:

Process_Description:

Append tracklines for backscatter data collected with the SWATHplus interferometric sonar. In ArcMap (version 9.3) selected the tracklines (L67f1-L73f1 survey 07002 ) from the CCB_BathTracklines.shp where backscatter was collected with the SWATHplus interferometric sonar was used to fill the gap in the Klein 3000 backscatter and exported to a new shapefile (CCB_SWATHplus_bstracklines.shp). Reformatted shapefile attributes to match the attributes in CCB_BackscatterTracklines.shp and then appended CCB_SWATHplus_bstracklines.shp to CCB_BackscatterTracklines.shp. Using ArcCatalog (version 9.3) added the attribute Length_KM and used the "calculate geometry" context menu to calculate the length in km of each line using the UTM Zone 19N coordinate system.

Source_Used_Citation_Abbreviation: CCB_BathTracklines.shp (this publication)

Process_Date: 200912

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews

Contact_Organization: U.S. Geological Survey

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2348

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: bandrews@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: String

Point_and_Vector_Object_Count: 643

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: CCB_BackscatterTracklines

Entity_Type_Definition:

Tracklines for backscatter data collected in the Cape Cod Bay survey area.

Entity_Type_Definition_Source: USGS

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: LINENAME

Attribute_Definition:

Name of sidescan-sonar file recorded along the survey line. This name is assigned by SonarPro acquisition software and is composed of Hypack survey line+ date+time. Where linename = l100f106081514400 l100f1= Hypack survey line, 060815 = year, month, day (2006, August 15), and 14400 = time stamp in UTC of start of line 14 hours, 40 minutes 0 seconds

Attribute_Definition_Source: USGS

Attribute:

Attribute_Label: JD

Attribute_Definition: Julian Day the data were collected

Attribute_Definition_Source: USGS

Attribute:

Attribute_Label: Survey

Attribute_Definition: WHCMSC field activity number

Attribute_Definition_Source: USGS

Attribute:

Attribute_Label: Sonar

Attribute_Definition: Type of Sonar used to collect the backscatter data

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Unrepresentable_Domain: Character string of width 25

Attribute:

Attribute_Label: Mosaic

Attribute_Definition:

Identifies the lines used to as source for the final backscatter mosaic.

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Unrepresentable_Domain: Character string of width 10

Attribute:

Attribute_Label: Length_KM

Attribute_Definition:

Length of the polyline feature in kilometers (calculated using UTM Zone 19, WGS84).

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0024

Range_Domain_Maximum: 9.76

Attribute_Units_of_Measure: kilometers (km)

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews

Contact_Organization: U.S. Geological Survey

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2348

Contact_Electronic_Mail_Address: bandrews@usgs.gov

Resource_Description: Downloadable Data

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: SHP

Format_Version_Number: ArcGIS 9.3

Format_Specification: ESRI polyline shapefile

Format_Information_Content:

Trackline navigation for acoustic backscatter collected within the northern Cape Cod Bay survey area.

File_Decompression_Technique: WinZip

Transfer_Size: 0.541

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<https://pubs.usgs.gov/of/2010/1006/GIS/shapefile/CCB_BackscatterTracklines.zip>

Access_Instructions: Data can be downloaded via the World Wide Web (WWW)

Offline_Option:

Offline_Media: DVD-ROM

Recording_Capacity:

Recording_Density: 4.75

Recording_Density_Units: Gbytes

Recording_Format: UDF

Fees: none

Technical_Prerequisites:

This zip file contains data available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have software capable of uncompressing the WinZip file and displaying the shapefile. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Metadata_Reference_Information:

Metadata_Date: 20100823

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews

Contact_Organization: U.S. Geological Survey

Contact_Position: Geographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2348

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: bandrews@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_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile