Shot point navigation at 100 shot intervals for EdgeTech SB-512i chirp seismic-reflection data collected in May 2012 by the U.S. Geological Survey within the Baltimore Canyon, mid-Atlantic margin (Esri point shapefile, Geographic, WGS 84, BC_all100shot.shp)

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Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 2014
Title:

Shot point navigation at 100 shot intervals for EdgeTech SB-512i chirp seismic-reflection data collected in May 2012 by the U.S. Geological Survey within the Baltimore Canyon, mid-Atlantic margin (Esri point shapefile, Geographic, WGS 84, BC_all100shot.shp)

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: Open-File Report
Issue_Identification: 2014-1118

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/10.3133/ofr20141118
Online_Linkage:

https://pubs.usgs.gov/of/2014/1118/data/Baltimore_Canyon/GIS/BC_shotnav.zip

Larger_Work_Citation:

Citation_Information:

Originator: Jeffrey Obelcz
Originator: Daniel S. Brothers
Originator: Uri S. ten Brink
Originator: Jason D. Chaytor
Originator: Charles R. Worley
Originator: Eric M. Moore
Publication_Date: 2014
Title:

Chirp Seismic-Reflection Data From the Baltimore, Washington, and Norfolk Canyons, U.S. Mid-Atlantic Margin

Edition: 1.0
Series_Information:

Series_Name: Open-File Report
Issue_Identification: 2014-1118

Publication_Information:

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

Online_Linkage: https://doi.org/10.3133/ofr20141118
Online_Linkage: https://pubs.usgs.gov/of/2014/1118/

Description:

Abstract:

A large number of high-resolution geophysical surveys between Cape Hatteras and Georges Bank have been conducted by federal, state, and academic institutions since the turn of the century. A major goal of these surveys is providing a continuous view of bathymetry and shallow stratigraphy at the shelf edge in order to assess levels of geological activity during the current sea level highstand. In 2012, chirp seismic-reflection data was collected by the U.S. Geologial Survey aboard the motor vessel Tiki XIV near three United States mid-Atlantic margin submarine canyons. These data can be used to further our understanding of passive continental margin processes during the Holocene, as well as providing valuable information regarding potential submarine geohazards. For more information on the U.S. Geological Survey involvement in this effort, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-005-FA.

Purpose:

This dataset contains shot point navigation at even 100 shot intervals (including both starting and end shots) for over 375 km of EdgeTech SB-512i Chirp seismic-reflection data collected by the U.S. Geological Survey during Woods Hole Coastal and Marine Science Center cruise 2012-005-FA within Baltimore Canyon. This dataset provides the GIS shot point navigation at an interval that corresponds readily with images produced from the seismic-reflection data. The dataset also serves as a navigation archive.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20120523
Beginning_Time: 1011 (UTC)
Ending_Date: 20120524
Ending_Time: 1126 (UTC)

Currentness_Reference: ground condition of survey on dates 20120523-20120524

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -74.043422
East_Bounding_Coordinate: -73.719950
North_Bounding_Coordinate: 38.326086
South_Bounding_Coordinate: 37.872736

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:62cf9353-1117-47d5-901d-b675d175035f

Theme:

Theme_Keyword_Thesaurus: None
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 2012-005-FA
Theme_Keyword: field activity number 12005
Theme_Keyword: USGS CMG InfoBank ID T-05-12-MC
Theme_Keyword: shot point navigation
Theme_Keyword: seismic navigation
Theme_Keyword: seismic profile
Theme_Keyword: seismic reflection
Theme_Keyword: chirp
Theme_Keyword: EdgeTech
Theme_Keyword: 512i
Theme_Keyword: M/V Tiki XIV
Theme_Keyword: M/V Tiki 14
Theme_Keyword: continental margin
Theme_Keyword: submarine canyon
Theme_Keyword: geohazards
Theme_Keyword: shotpoint navigation
Theme_Keyword: seismic-reflection data

Theme:

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

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: navigational data
Theme_Keyword: marine geophysics
Theme_Keyword: geospatial datasets

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: mid-Atlantic margin
Place_Keyword: Maryland
Place_Keyword: Baltimore Canyon
Place_Keyword: Baltimore Canyon Trough

Stratum:

Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Seafloor
Stratum_Keyword: Subsurface
Stratum_Keyword: sea floor

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2012

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: Jeffrey Obelcz
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: 508-548-8700 x. 2245
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jobelcz@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://pubs.usgs.gov/of/2014/1118/data/Baltimore_Canyon/GIS/BC_all100shot_browse.jpg

Browse_Graphic_File_Description:

Shot point navigation at even 100 shot intervals for EdgeTech 512i chirp seismic-reflection data collected in and around Baltimore Canyon

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.1850

Cross_Reference:

Citation_Information:

Originator: John Stockwell
Publication_Date: 2011
Title: CWP/SU: Seismic Un*x
Publication_Information:

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

Online_Linkage: http://www.cwp.mines.edu/cwpcodes/

Cross_Reference:

Citation_Information:

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

Publication_Place: La Jolla, California
Publisher: Scripps Institution of Oceanography, UC San Diego

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

Cross_Reference:

Citation_Information:

Originator: Michael W. Norris and 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:

Attribute_Accuracy:

Attribute_Accuracy_Report: All attributes were checked in a consistent manner.

Logical_Consistency_Report:

Any spurious data points were removed during processing. For each 100-shot interval line there is one seismic-profile image. No duplicates exist.

Completeness_Report:

Lines were serially recorded during the survey in the format "LXF1". When a file is named "LXF2" or has a file number greater than 2, the recording parameters were usually changed (record length and shot rate), as recorded in the ship's log. The following lines were either not recorded or excluded from this data release: L3F2 (negligible length), L4F1 (line name error, never recorded), L15F1 (negligible length), L25F2 (small, noisy, no features of interest), L47F1 (negligible length).

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The SB-0512i was towed 3 meters below the sea surface approximately 10 m astern of the M/V Tiki XIV. Position data were provided by a Differential Global Positioning System (DGPS) navigation receiver mounted on the port aft side of the cabin. Layback positions, which account for the linear distance between the shipboard DGPS receiver and the towed chirp fish, were not calculated or accounted for in the navigation. Positional accuracy is assumed to be +/- 20 m; layback calculations do not account for fish motions behind the vessel caused by sea state/ship speed changes in angle and scope of the tow cable.

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: 20120523
Beginning_Time: 1011 (UTC)
Ending_Date: 20120527
Ending_Time: 2355 (UTC)

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: none
Source_Contribution:

Seismic-reflection data acquisition: Chirp seismic data were collected using an EdgeTech SB-0512i towfish (0.5-4.5 kHz pulse, 50 ms pulse length, except for L19F3-L28F1, which were 0.5-2.7 kHz, 40 ms pulse length), which was towed astern of the M/V Tiki XIV of Ocean City, MD. Chesapeake Technologies' SonarWiz (v.4.04.0031) seismic acquisition software was used to control the chirp, digitally log trace data in the SEG-Y Rev. 1 format (IEEE floating point), and record GPS navigation coordinates to the SEG-Y trace headers (in arc seconds of Latitude and Longitude, multiplied by a scalar of 100). Trace lengths are constant within lines, but vary from line to line due to variable water depth in the survey area (the minimum trace length was 250 ms and the maximum 1400 ms). This yields a range of samples per trace from approximately 5435 (250 ms trace length) to 30435 (1400 ms trace length). Sample interval was kept at a constant .000046 s. The ping rate was set to be consistent with the trace length, so it varied between 250 ms and 1400 ms.

Process_Step:

Process_Description:

Seismic Unix (version 4.2) was used to read 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). Header information from each SEG-Y file was saved to text files after an AWK (no version) filter was used to maintain shots at multiples of 100 and shots with unique navigation coordinates. For the 100 shot multiples, the start and end shots of each line were preserved as well. End shots and shots at multiples of 100 may not have unique navigation coordinates. Separate text files containing unique shot navigation were also produced.

Process_Date: 201206
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jeffrey Obelcz
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: 508-548-8700 x. 2245
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jobelcz@usgs.gov

Process_Step:

Process_Description:

The 100 shot interval text files produced from process step 1 were concatenated into a comma-delimited text file, then the text file was imported into ArcMap (version 9.3) using 'Add XY data' and saved as points (Geographic, WGS84) in the Esri shapefile format.

Process_Date: 201305
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jeffrey Obelcz
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: 508-548-8700 x. 2245
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: jobelcz@usgs.gov

Process_Step:

Process_Description:

Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Added the DOI link as the first link in the identification section. Updated the link to the field activity. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.

Process_Date: 20171004
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

Process_Step:

Process_Description: USGS Thesaurus keywords added to the keyword section.
Process_Date: 20180720
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

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20200908
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: Entity point
Point_and_Vector_Object_Count: 2401

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: BC_all100shot
Entity_Type_Definition: shot point navigation for seismic profiles (100 shot interval)
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: line
Attribute_Definition:

line name corresponding to PNG format seismic-reflection profile images. The format of the linename is a combination of the survey line and the processing of the SEG-Y data. The line number is in the format LXXFY where XX is the line number, and Y is the file number on that line (in case more than one file was used to acquire a line). Lines with "topmute_sf" indicate that the software SIOSEIS was used to mute the first 10 ms of each seismic trace and then used identify the seafloor and then use this information to process 'swell' to minimize the effect of sea surface heave. Lines with only "sf" in the name had to have the seafloor manually picked and then insert that information into the SEG-Y header to enable the sea surface heaving to be minimized.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain: character set.

Attribute:

Attribute_Label: ffid
Attribute_Definition: seismic shot number
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 5521
Range_Domain_Maximum: 263235
Attribute_Units_of_Measure: shot

Attribute:

Attribute_Label: lon
Attribute_Definition: longitude coordinate in decimal degrees, WGS84
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -74.043336
Range_Domain_Maximum: -73.71995
Attribute_Units_of_Measure: decimal degrees
Attribute_Measurement_Resolution: 0.000001

Attribute:

Attribute_Label: lat
Attribute_Definition: latitude coordinates in decimal degrees, WGS84
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 37.872736
Range_Domain_Maximum: 38.325947
Attribute_Units_of_Measure: decimal degrees
Attribute_Measurement_Resolution: 0.000001

Attribute:

Attribute_Label: year
Attribute_Definition: calendar year data were collected
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2012
Range_Domain_Maximum: 2012
Attribute_Units_of_Measure: year

Attribute:

Attribute_Label: jd_hour_mi
Attribute_Definition:

Julian day, hour, minute, and second the data were collected (UTC, format JD:HH:MM:SS). Julian day is the integer number representing the interval of time in days since January 1 of the year.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Unrepresentable_Domain:

Although the value is represented as a number, the number as a whole doesn't have a meaning. This value has to be broken down to its separate components (julian day, hour, minute, second) to have numerical significance.

Overview_Description:

Entity_and_Attribute_Overview:

The CSV file distributed with the shapefile has all the unique shot navigation. The columns of information are line, ffid, lon, lat, year, jd_hour_minute_second. These are the same attributes present in the shapefile, with the last field (jd_hour_minute_second) having a truncated name in the shapefile (jd_hour_mi). Likewise, these fields have the same definition as the shapefile.

Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jeffrey Obelcz
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: U.S.A.

Contact_Voice_Telephone: 508-548-8700 x. 2245
Contact_Electronic_Mail_Address: jobelcz@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: Shapefile
Format_Version_Number: ArcGIS 9.3
Format_Specification: Esri point shapefile
Format_Information_Content:

This zip file contains shot point navigation at even 100 shot intervals (BC_100shot.shp) for EdgeTech SB-512i chirp seismic-reflection data collected by the U.S. Geological Survey within and around Baltimore Canyon. The Zip file also contains a comma delimited file (BC_shotnav.csv), that contains every unique shot point for the same survey. This also includes associated metadata.

File_Decompression_Technique:

Use WinZip, 7zip, Peazip or pkUnzip. Compressed with WinZip v. 14.0.

Transfer_Size: 2.1

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://pubs.usgs.gov/of/2014/1118/data/Baltimore_Canyon/GIS/BC_shotnav.zip

Network_Resource_Name:

https://pubs.usgs.gov/of/2014/1118/ofr2014-1118-data-catalog.html

Access_Instructions: Data can be downloaded via the world wide web (WWW)

Digital_Form:

Digital_Transfer_Information:

Format_Name: CSV
Format_Version_Number: Information unavailable from original metadata.
Format_Specification: comma separated values
Format_Information_Content:

File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://pubs.usgs.gov/of/2014/1118/data/Baltimore_Canyon/GIS/BC_shotnav.zip

Network_Resource_Name:

https://pubs.usgs.gov/of/2014/1118/ofr2014-1118-data-catalog.html

Access_Instructions: Data can be downloaded via the world wide web (WWW)

Fees: none

Metadata_Reference_Information:

Metadata_Date: 20211116
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jeffrey Obelcz
Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: U.S.A.

Contact_Voice_Telephone: 508-457-2245
Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov
Contact_Instructions:

The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid.

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/open_file_report/ofr2014-1118/BC_all100shotmeta.html>