JPEG formatted images of EdgeTech 512i chirp seismic-reflection profiles collected by the U.S. Geological Survey in the Cape Ann - Salisbury Beach, MA survey area.

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 2008
Title:

JPEG formatted images of EdgeTech 512i chirp seismic-reflection profiles collected by the U.S. Geological Survey in the Cape Ann - Salisbury Beach, MA survey area.

Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:

Series_Name: Open-File Report
Issue_Identification: 2007-1373

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: https://doi.org/10.3133/ofr20071373
Online_Linkage:

https://pubs.usgs.gov/of/2007/1373/GIS/hyperlink_images/SeismicProfiles.zip

Larger_Work_Citation:

Citation_Information:

Originator: Walter A. Barnhardt
Originator: Brian D. Andrews
Originator: Seth D. Ackerman
Originator: Wayne E. Baldwin
Originator: Christopher J. Hein
Publication_Date: 2008
Title:

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

Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:

Series_Name: Open-File Report
Issue_Identification: 2007-1373

Publication_Information:

Publication_Place: Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

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

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, Coastal and Marine Geology Program, Woods Hole Science Center. 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 reserves, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters (5-30 m deep) of Massachusetts between the New Hampshire border and Cape Cod Bay. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (https://woodshole.er.usgs.gov/project-pages/coastal_mass/). This spatial dataset is from the Cape Ann and Salisbury Beach Massachusetts project area. The data collected in two separate surveys in 2004 and 2005 and cover approximately 325 square kilometers of the inner continental shelf. High resolution bathymetry and backscatter intensity were collected in 2004 and 2005. Seismic profile data, sediment samples and bottom photography were also collected in 2005.

Purpose:

JPEG images of each seismic profile were generated in order to incorporate images of the seismic profiles into Geographic Information System (GIS) projects and data archives utilizing HTML. The JPEG images represent approximately 1100 km of Edgetech 512i chirp seismic-reflection profiles collected within the Cape Ann to Salisbury Beach survey area. Each profile image is hotlinked to its corresponding trackline navigation contained within an ESRI polyline feature class ('SeismicTrackLine' in the file geodatabase 'OFR2007_1373_gdb.zip') or shapefile ('SeismicTrackLine.zip'). Even 500 shot index markers along the top of the JPEG images correlate to the positions of 500 shot intervals within an ESRI point feature class ('SeismicShot_500' in the file geodatabase 'OFR2007_1373_gdb.zip') or shapefile ('SeismicShot_500.zip').

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20050908
Ending_Date: 20050920

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.808261
East_Bounding_Coordinate: -70.592854
North_Bounding_Coordinate: 42.883553
South_Bounding_Coordinate: 42.665094

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:745c815f-aee3-4c8a-a566-4e9c4d502b31

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Seafloor
Theme_Keyword: JPEG
Theme_Keyword: seismic reflection
Theme_Keyword: SEGY
Theme_Keyword: seismic profile
Theme_Keyword: subbottom
Theme_Keyword: EdgeTech
Theme_Keyword: 512i
Theme_Keyword: image
Theme_Keyword: chirp
Theme_Keyword: R/V Connecticut
Theme_Keyword: WHSC field activity serial number 05005

Theme:

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

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sub-bottom profiling
Theme_Keyword: image collections
Theme_Keyword: marine geophysics

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: Gulf of Maine
Place_Keyword: Bigelow Bight
Place_Keyword: Merrimack River
Place_Keyword: Ipswich Bay
Place_Keyword: Massachusetts
Place_Keyword: Cape Ann
Place_Keyword: Salisbury Beach
Place_Keyword: Plum Island

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

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/2007/1373/GIS/browse_jpg/SeismicReflection.jpg

Browse_Graphic_File_Description: JPEG image of a chirp seismic-reflection profile
Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500

Cross_Reference:

Citation_Information:

Originator: John Stockwell
Publication_Date: 2008
Title: CWP/SU: Seismic Uni*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: 2007
Title: SIOSEIS
Publication_Information:

Publication_Place: LaJolla, CA
Publisher:

Scripps Institution of Oceanography, University of California - 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 Format1
Publication_Information:

Publication_Place: Tulsa, OK
Publisher: Society of Exploration Geophysicists

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

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

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

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

Data_Quality_Information:

Logical_Consistency_Report:

Processed seismic data were converted to JPEG format for ease of seismic trace display. Quality control was conducted during processing.

Completeness_Report:

All acquired seismic data were processed and JPEG images produced.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The SB-0512i was towed approximately 10 m astern and approximately 3 m below the sea surface. RTK-GPS navigation was obtained from the receiver mounted above the interferometric sonar head, but seismic towfish layback was not accounted for. The layback of the towfish adds additional uncertainty due to changes in angle and scope of the tow cable in response to sea state and vessel speed. Based upon horizontal offsets between the fish and GPS receiver, GPS accuracies, and fish motion behind the vessel, the resulting positional accuracy is assumed to be ± 20 m.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: USGS (assumed)
Publication_Date: unknown
Title: Information unavailable from original metadata.

Type_of_Source_Media: Information unavailable from original metadata.
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20050908
Ending_Date: 20050920

Source_Currentness_Reference: Information unavailable from original metadata.

Source_Citation_Abbreviation: Information unavailable from original metadata.
Source_Contribution:

Seismic-reflection data acquisition at sea (2005): Chirp seismic data were collected using an EdgeTech Geo-Star FSSB sub-bottom profiling system and an SB-0512i towfish (0.5-12 kHz) on the R/V Connecticut of Groton, CT. Delph Seismic+Plus acquisition software (Triton Elics International Inc.) was used to control the Geo-Star topside unit and digitally log trace data in the SEG-Y rev. 1 standard format. Data were acquired using a 0.25-s shot rate, a 9-ms pulse length, and a 0.5 to 6 kHz frequency sweep. Trace lengths were adjusted to account for changes in water depth, and consequently ranged between 100 and 200 ms. Tracklines are spaced between 100 and 1500 m apart in the shore parallel direction and about 1 km apart in the shore perpendicular direction.

Process_Step:

Process_Description:

A script was run that used SIOSEIS (version 96.4) to shift all traces by -4 ms vertically to account for the position of the 512i towfish beneath the sea surface. A second SIOSEIS script was used to predict and remove sea surface heave, and mute water column portions of the traces by: 1)automatically picking the sea floor by identifying peak amplitudes within a vertical window; 2)smoothing sea floor picks using an along track filter approximating the period of sea surface heave (the filter window was set to use 46 traces); 3)creating a series of difference values between the raw and smoothed seafloor picks for each trace; 4)shifting traces up or down according to the difference values; and 5) muting each trace between time zero and the time of the smoothed sea floor pick, thus removing noise within the water column. Changes to the traces within each profile were saved to new "heave corrected" SEG-Y files, which were used for creation of JPEG browse images and digital interpretation.

Process_Date: 2007
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) 548-8700x2226
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov

Process_Step:

Process_Description:

An AWK (no version) script was run that used Seismic Unix (version 4.1) to read the SEG-Y files and plot the data as 8-bit gray scale Postscript files using the Seismic Unix 'psimage' algorithm. All images were created with a horizontal scale of 200 traces per inch. Due to variable water depths and degrees of sub-surface penetration, images were plotted at three different vertical scales within a constant 8-inch vertical window. Most profiles contain 100 milliseconds of Two-Way Travel Time yielding 12.5 milliseconds per inch, while profiles in deeper water contain either 110 or 120 milliseconds, yielding 13.75 and 15 milliseconds per inch, respectively. Postscript images were converted to JPEG format using ImageMagick (version 5.5.6).

Process_Date: 2007
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) 548-8700x2226
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: wbaldwin@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.). Fixed a link to the project page in the abstract. Fixed a link in a cross-reference. The source information was incomplete and had to be modified to meet the standard. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. 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: 20170201
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: Crossref DOI link was added as the first link in the metadata.
Process_Date: 20191118
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: Raster
Raster_Object_Information:

Raster_Object_Type: pixel

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey, Woods Hole Science Center

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: JPEG
Format_Version_Number: unknown
Format_Specification: Joint Photographic Experts Group
Format_Information_Content:

Zip compressed JPEG images of processed EdgeTech 512i seismic-reflection profiles and associated metadata.

File_Decompression_Technique: Use WinZip or pkUnzip
Transfer_Size: 326

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://pubs.usgs.gov/of/2007/1373/GIS/hyperlink_images/SeismicProfiles.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

Custom_Order_Process:

Digital copies of these chirp seismic data may also be obtained in the SEG-Y Rev. 1 standard format upon request. The data would be packaged on DVD, and contain the chirp-processed, envelope traces.

Technical_Prerequisites: These data can be viewed with any image JPEG viewing software.

Metadata_Reference_Information:

Metadata_Date: 20240318
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: whsc_data_contact@usgs.gov
Contact_Instructions:

The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318)

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2007-1373/seismicprofiles_metadata.html>