Shotpoint navigation at a 500-shot interval for chirp seismic-reflection data collected in 2016 by the U.S. Geological Survey off Town Neck Beach in Sandwich, Massachusetts, during field activity 2016-017-FA (point shapefile)

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 2019
Title:

Shotpoint navigation at a 500-shot interval for chirp seismic-reflection data collected in 2016 by the U.S. Geological Survey off Town Neck Beach in Sandwich, Massachusetts, during field activity 2016-017-FA (point shapefile)

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9HZHXXV

Publication_Information:

Publication_Place:

Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts

Publisher:

U.S. Geological Survey, Coastal and Marine Hazards and Resources Program

Online_Linkage: https://doi.org/10.5066/P9HZHXXV
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5c926dbbe4b0938824573d52

Larger_Work_Citation:

Citation_Information:

Originator: Seth D. Ackerman
Originator: David S. Foster
Originator: William W. Danforth
Originator: Emily C. Huntley
Publication_Date: 2019
Title:

High-resolution geophysical and sampling data collected off Town Neck Beach in Sandwich, Massachusetts, 2016

Edition: 1.0
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9HZHXXV

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Ackerman S.D., Foster D.S., Danforth W.W., and Huntley, E.C., 2019, High-resolution geophysical and sampling data collected off Town Neck Beach in Sandwich, Massachusetts, 2016: U.S. Geological Survey data release, https://doi.org/10.5066/P9HZHXXV.

Online_Linkage: https://doi.org/10.5066/P9HZHXXV
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5c7fe3afe4b0938824443b00

Description:

Abstract:

Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected during these 2016 surveys are included in this data release: https://doi.org/10.5066/P9HZHXXV.
More information can be found on the websites for the Woods Hole Coastal and Marine Science Center field activities at https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-017-FA and https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-037-FA.

Purpose:

This dataset contains shotpoint navigation for first and last shots, shots at multiples of 500, and shots with unique navigation coordinates for approximately 130 linear km of chirp seismic-reflection data collected by the U.S. Geological Survey during survey 2016-017-FA off Town Neck Beach in Sandwich, Massachusetts. This information can help spatially correlate the subbottom data with other data in the GIS.

Supplemental_Information:

The positions of the 500-shot intervals within the shapefile correlate to the 500-shot index markers along the top of the seismic profile images. Each profile image can be hotlinked to its corresponding trackline navigation contained within the Esri polyline shapefile '2016-017-FA_SeismicTracklines.shp'. The seismic images and trackline shapefile can be found online at https://doi.org/10.5066/P9HZHXXV.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160517
Ending_Date: 20160523

Currentness_Reference:

Ground condition of survey dates: 20160517-20160523. No geophysical data were collected on May 18 (JD 139), 21 (JD 142), and 22 (JD 143), 2016 ; see Completeness_Report for more information.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.494732
East_Bounding_Coordinate: -70.456610
North_Bounding_Coordinate: 41.786529
South_Bounding_Coordinate: 41.761278

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5c926dbbe4b0938824573d52

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: seafloor
Theme_Keyword: sea floor
Theme_Keyword: marine geology
Theme_Keyword: field activity 2016-017-FA
Theme_Keyword: navigation shotpoint
Theme_Keyword: seismic navigation
Theme_Keyword: seismic reflection
Theme_Keyword: subbottom
Theme_Keyword: chirp
Theme_Keyword: Knudsen 3202
Theme_Keyword: R/V Rafael

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geophysics
Theme_Keyword: navigational data
Theme_Keyword: seismic methods
Theme_Keyword: seismic reflection methods
Theme_Keyword: sub-bottom profiling

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: location
Theme_Keyword: geoscientificInformation

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: Gulf of Maine
Place_Keyword: Massachusetts
Place_Keyword: Cape Cod Bay
Place_Keyword: Cape Cod
Place_Keyword: Sandwich
Place_Keyword: Town Neck Beach

Stratum:

Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Seafloor
Stratum_Keyword: Sea floor
Stratum_Keyword: Surface
Stratum_Keyword: Subsurface

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2016

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: Seth Ackerman
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
Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: [email protected]

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/5c926dbbe4b0938824573d52/?name=2016-017-FA_SeismicShot500_browse.jpg

Browse_Graphic_File_Description:

Knudsen 3202 500-shotpoint navigation off Town Neck Beach in Sandwich, Massachusetts.

Browse_Graphic_File_Type: JPEG

Cross_Reference:

Citation_Information:

Originator: Jack Cohen
Originator: John Stockwell
Publication_Date: 2011
Title: CWP/SU: Seismic Un*x Release No. 4.2
Publication_Information:

Publication_Place: Golden, CO
Publisher: Center for Wave Phenomena - Colorado School of Mines

Online_Linkage: https://github.com/JohnWStockwellJr/SeisUnix

Cross_Reference:

Citation_Information:

Originator: Paul Henkart
Publication_Date: 2011
Title: SIOSEIS
Publication_Information:

Publication_Place: LaJolla, CA
Publisher:

Scripps Institution of Oceanography, University of California - San Diego

Online_Linkage: http://sioseis.ucsd.edu/index.html

Cross_Reference:

Citation_Information:

Originator: Michael W. Norris
Originator: Alan K. Faichney
Publication_Date: 2002
Title: SEGY Rev.1 Data Exchange Format 1
Publication_Information:

Publication_Place: Tulsa, OK
Publisher: Society of Exploration Geophysicists

Online_Linkage: http://www.seg.org/documents/10161/77915/seg_y_rev1.pdf

Data_Quality_Information:

Logical_Consistency_Report:

Any spurious data points were removed during processing. No duplicate navigation fixes exist for the 500 shots shapefile. There is no data for what would be lines 8 and 41.

Completeness_Report:

Sections of survey data where navigation was recorded but no seismic data were logged are not included. Time gaps occurred during this field activity on days when no survey data were collected due to bad weather, rough seas, and stops in surveying for equipment issues (on May 18, 21, and 22, 2016). Any sections of seismic data that were collected outside the survey area (such as short segments during the transit to or from the dock at the Sandwich Marina) were not processed and are therefore not included in this dataset.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Field activity 2016-017-FA: Differential Global Positioning System (DGPS) navigation data were acquired with a Hemisphere DGPS receiver. Navigation data were sent to the Knudsen SounderSuite acquisition application, which logged the coordinates to individual trace headers in the Society of Exploration Geophysicists Y (SEG-Y) Revision 1 format (Norris and Faichney, 2002). A 2-m horizontal offset between the seismic transducers and the DGPS receiver was not accounted for during data acquisition, and resulting positional accuracy is assumed to be better than 10 m.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: Unpublished Material
Title: raw seismic navigation

Type_of_Source_Media: disc
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160517
Ending_Date: 20160523

Source_Currentness_Reference:

Ground condition of survey dates: 20160517-20160523. No geophysical data were collected on May 18 (JD 139), 21 (JD 142), and 22 (JD 143), 2016; see Completeness_Report for more information.

Source_Citation_Abbreviation: Knudsen 3202 seismic data
Source_Contribution:

Seismic-reflection data acquisition 2016-017-FA: Seismic profile data were collected using a Knudsen Engineering Limited (KEL) Chirp 3202 system with transducers mounted on a rigid pole on the starboard side of the R/V Rafael of Woods Hole, MA. Knudsen SounderSuite seismic acquisition software was used to control the 3202 system, digitally log trace data in the SEG-Y Revision 1 format (Norris and Faichney, 2002), and record DGPS navigation coordinates to the SEG-Y trace headers in arc seconds. The transducer draft was 0.5 m below the water surface, and the draft offset was accounted for during data acquisition. Navigation coordinates and water depths from the 200-kHz channel were logged together in ASCII formatted files for each survey line. Data were acquired at a peak frequency of 3.5 kHz, a 0.25-second fire interval, a 36-38 microsecond sample interval, and record lengths between 26 and 130 milliseconds. A total of 128 km of seismic data were collected. DGPS navigation was supplied by a Hemisphere receiver with the antenna mounted on the aft of the R/V Rafael's cabin just port of the centerline. Seismic-reflection data were processed using SIOSEIS (Henkart, 2011) and Seismic Unix (Cohen and Stockwell, 2011).

Process_Step:

Process_Description:

SIOSEIS (version 2015.3.1) was used to read SEG-Y files, renumber shots starting from one, and write out new SEG-Y files. The original shot numbers, which were assigned by SounderSuite sequentially over the duration of an acquisition session despite SEG-Y file changes, are preserved in the raw SEG-Y data. This process step and all subsequent process steps, unless otherwise noted, were performed by the same person - David Foster.

Process_Date: 2016
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David Foster
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
Country: USA

Contact_Voice_Telephone: 508-548-8700 x2271
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: [email protected]

Process_Step:

Process_Description:

SIOSEIS was used to insert Kingdom Suite corrected sea-floor values into the SEG-Y trace headers, minimize the effect of sea surface heave using process 'swell', and write SEG-Y files for creation of browse images and digital interpretation.

Process_Date: 2016

Process_Step:

Process_Description:

Seismic Unix (version 4.2) was used to read all processed SEG-Y files, write a Seismic Unix file, and extract SEG-Y trace header information, including shot number, longitude, latitude, year, Julian day, and time of day (UTC). Geographic coordinates (WGS 84) were converted to UTM Zone 19N coordinates (WGS 84) using PROJ (version 4.9.3). Header information from each SEG-Y file was saved to CSV text files after an AWK filter was used to maintain the first and last shots, shots at multiples of 500, and shots with unique navigation coordinates. End shots and shots at multiples of 500 may not have unique navigation coordinates. A 500-shot interval was chosen because it corresponds to the annotation interval provided along the top of the seismic-reflection profile PNG images. In the process of extracting the navigation from the SEG-Y files and saving it to the CSV files, a temporary plot was made to visually check the navigation fixes and identify if there were any issues or extreme outliers.

Process_Date: 2016

Process_Step:

Process_Description:

A Python script (3202intoSQL_2016-017-FA.py), originally written by Wayne Baldwin, was used to import the CSV text files containing navigation information into the SpatiaLite (version 4.3.0a) enabled SQLite (version 3.27.1) database. The geographic locations for each shotpoint were used to create point and line feature geometries in the SQL database. Additional survey information is populated in the SQL database including identifiers for the survey name, vessel, and seismic equipment used. This process step and all subsequent process steps were performed by the same person - Seth Ackerman.

Process_Date: 20190222
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Seth Ackerman
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
Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: [email protected]

Process_Step:

Process_Description:

An Esri point shapefile for the 500-shotpoint intervals was exported directly from the SQLite database using spatialite-tools (version 4.3.0_3).

spatialite_tool -e -shp 2016-017-FA_SeismicShot500 -d ./2016-017-FA-SQLdb.sqlite -t SeisSht500_pt -g geom_500 -c CP1252 -s 4326 --type POINT

Process_Date: 20190301

Process_Step:

Process_Description:

CSV files for the unique shot navigation data and the 500-interval shot navigation (including the beginning and end shot) were exported from the SQLite database using Geospatial Data Library (GDAL 2.4.0) ogr2ogr executable with the SpatiaLite option and an SQL query.

ogr2ogr -f "CSV" 2016-017-FA_424_shotunique.csv 2016-017-FA-SQLdb.sqlite -dsco SPATIALITE=yes -sql "SELECT * FROM SeisUnique_pt"
ogr2ogr -f "CSV" 2016-017-FA_424_shot500.csv 2016-017-FA-SQLdb.sqlite -dsco SPATIALITE=yes -sql "SELECT * FROM SeisSht500_pt"

The file '2016-017-FA_knudsen_shotunique.csv', which is provided on the data release landing page for the 500-shot data '2016-017-FA_SeismicShot500', contains the unique navigation. The file '2016-017-FA_knudsen_shot500.csv, on the same landing page, contains the beginning, ending, and 500-shot interval positions.

Process_Date: 20190301

Process_Step:

Process_Description:

XTools Pro (version 17.0.2734) for ArcGIS Desktop was used (Table Operations - Table Restructure) to clean up the attribute headings in the shapefile's attribute table. The ImageName field was updated to reflect the renamed seismic image names with the field activity prepended to the line name. The ImageName fields in both of the CSV files (2016-017-FA_knudsen_shotunique.csv and 2016-017-FA_SeismicShot500.csv) were updated as well.

Process_Date: 201903

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20200807
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: [email protected]

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 435

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: 2016-017-FA_SeismicShot500
Entity_Type_Definition:

Start, end, and 500-shotpoint interval positions for seismic profiles

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: East
Attribute_Definition: Easting coordinate in UTM Zone 19N meters, WGS 84
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 375786.98
Range_Domain_Maximum: 378929.78
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: North
Attribute_Definition: Northing coordinate in UTM Zone 19N meters, WGS 84
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 4624306.39
Range_Domain_Maximum: 4627144.18
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Lon
Attribute_Definition: Longitude coordinate in decimal degrees, WGS 84
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -70.494732
Range_Domain_Maximum: -70.456610
Attribute_Units_of_Measure: decimal degrees
Attribute_Measurement_Resolution: 0.000001

Attribute:

Attribute_Label: Lat
Attribute_Definition: Latitude coordinate in decimal degrees, WGS 84
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 41.761278
Range_Domain_Maximum: 41.786529
Attribute_Units_of_Measure: decimal degrees
Attribute_Measurement_Resolution: 0.000001

Attribute:

Attribute_Label: LineName
Attribute_Definition:

Survey line/seismic data file name; generally in the format l###f@ where ### is the name of the trackline along which seismic data were collected, and @ is the file iteration (a file iteration greater than 1 indicates that the survey line was split into multiple files during acquisition). For example, survey line 38 was interrupted 5 minutes into the line and then continued with recording to a new seismic file; therefore, there are two tracklines for line 38: "l38f1" and "l38f2".

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: String up to 5 characters

Attribute:

Attribute_Label: ImageName
Attribute_Definition:

Name of seismic profile image used as hyperlink. ImageName is in the format 2016017FA_Knudsen_LineName_s.png, where 2016017FA_Kundsen is the field activity identifier followed by the sonar system (Knudsen).

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: String up to 35 characters

Attribute:

Attribute_Label: Shot
Attribute_Definition:

Name of seismic shot number (first, last, and every 500 shot between for each survey line)

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 5091
Attribute_Units_of_Measure: shot number
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Year
Attribute_Definition: Calendar year data were collected
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2016
Range_Domain_Maximum: 2016
Attribute_Units_of_Measure: Calendar year
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: DayUTC
Attribute_Definition:

Julian day and UTC time of seismic shot (DAY:HH:MM:SS), where Julian day is the day of the year from the beginning of a given year (e.g. January 1 = 001, February 1 = 032).

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Unrepresentable_Domain: String up to 12 characters

Attribute:

Attribute_Label: SurveyID
Attribute_Definition:

WHCMSC field activity identifier (e.g., "2016-017-FA" where 2016 is the survey year, 017 is survey number of that year, and FA is Field Activity)

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain: String up to 11 characters

Attribute:

Attribute_Label: VehicleID
Attribute_Definition: Name of the survey vessel used for data collection
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain: String up to 10 characters

Attribute:

Attribute_Label: DeviceID
Attribute_Definition:

Name of the sonar device used to collect seismic-reflection data

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain: String up to 18 characters

Overview_Description:

Entity_and_Attribute_Overview:

These shotpoints, in conjunction with the seismic tracklines, can be used with the PNG seismic-reflection images. The tracklines can be hyperlinked to the corresponding PNG seismic-reflection images in ArcGIS. The 500-shotpoint intervals correspond to the x-axis ticks on the PNG images. The unique shot CSV file and the 500-shot CSV file have the following column headings: East, North, Lon, Lat, LineName, ImageName, Shot, Year, DayUTC, SurveyID, VehicleID, and DeviceID. These 12 columns correspond to the same 12 attributes of the shapefile.

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, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA

Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: [email protected]

Resource_Description:

USGS data release 2016-017-FA seismic shotpoint navigation at a 500-shot interval (2016-017-FA_SeismicShot500.shp; including first, last and every 500 shot between) from offshore of Town Neck Beach in Sandwich, Massachusetts. The data release landing page (2016-017-FA_SeismicShot500) contains a shapefile, the unique shot CSVx file (2016-017-FA_knudsen_shotunique.csv), the first/last/every-500-shot CSV file (2016-017-FA_knudsen_shot500.csv) and metadata files in standard 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: SHP
Format_Version_Number: SpatiaLite ver. 4.3.0a
Format_Specification: point shapefile
Format_Information_Content:

This dataset contains (1) shotpoint navigation (at a 500-shot interval with first and last shot) in CSV text format; (2) a unique shot navigation in a CSV text file; and (3) first/last/every-500-shot navigation for Knudsen 3302 chirp seismic-reflection data collected by the U.S. Geological Survey from offshore of Town Neck Beach in Sandwich, Massachusetts in Esri Shapefile format; and (4) associated metadata.

Transfer_Size: 1.5

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/5c926dbbe4b0938824573d52

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/5c926dbbe4b0938824573d52

Network_Resource_Name: https://doi.org/10.5066/P9HZHXXV

Access_Instructions:

The first link is to the page containing the data. The second is a direct link to download all data available from the page as a zip file. The final link is to the publication landing page. The data page (first link) may have additional data access options, including web services.

Digital_Form:

Digital_Transfer_Information:

Format_Name: CSV
Format_Version_Number: SpatiaLite ver. 4.3.0a
Format_Specification: Comma Separated Value
Format_Information_Content:

Transfer_Size: 1.5

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/5c926dbbe4b0938824573d52

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/5c926dbbe4b0938824573d52

Network_Resource_Name: https://doi.org/10.5066/P9HZHXXV

Access_Instructions:

The first link is a direct link to download the zipped file of the backscatter imagery and metadata. The second and third links will both take you to the field activity data page containing all of the available data from this survey including this dataset.

Fees: none

Technical_Prerequisites:

This dataset contains data available in Esri shapefile format and CSV file. The user must have software capable of reading shapefile format to use the shapefile. Free geospatial data viewers can be found online. The CSV file can be read with a text editor.

Metadata_Reference_Information:

Metadata_Date: 20240319
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Seth Ackerman
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
Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: [email protected]
Contact_Instructions:

The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240319)

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9HZHXXV/2016-017-FA_SeismicShot500_meta.html>