Chirp seismic profile images collected in 2016 by the U.S. Geological Survey off Town Neck Beach in Sandwich, Massachusetts, during field activity 2016-017-FA (PNG images)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2019
Title:
Chirp seismic profile images collected in 2016 by the U.S. Geological Survey off Town Neck Beach in Sandwich, Massachusetts, during field activity 2016-017-FA (PNG images)
Edition: 1.0
Geospatial_Data_Presentation_Form: raster 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/5c926dc8e4b0938824573d5d
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:
PNG images of each chirp seismic profile were generated to integrate the seismic profiles into Geographic Information System (GIS) projects. The PNG images represent approximately 130 linear km of Knudsen chirp seismic-reflection data collected by the U.S. Geological Survey off Town Neck Beach in Sandwich, Massachusetts, in May 2016 during USGS field activity 2016-017-FA. These data can be used in conjunction with other geophysical and sample data to identify sea-floor morphology, sediment thickness and underlying structure and stratigraphy.
Supplemental_Information:
Each profile image can be hotlinked to its corresponding trackline navigation contained within the Esri polyline shapefile '2016-017-FA_SeismicTracklines.shp'. Even 500-shot index markers along the top of the PNG images correlate to the positions of 500-shot intervals within the Esri point shapefile '2016-017-FA_SeismicShot500.shp'. The trackline and shotpoint shapefiles 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:5c926dc8e4b0938824573d5d
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: seismic profile
Theme_Keyword: navigation shotpoint
Theme_Keyword: seismic navigation
Theme_Keyword: seismic reflection
Theme_Keyword: subbottom
Theme_Keyword: chirp
Theme_Keyword: Knudsen 3202
Theme_Keyword: image
Theme_Keyword: PNG
Theme_Keyword: R/V Rafael
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geophysics
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: 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: sackerman@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
https://www.sciencebase.gov/catalog/file/get/5c926dc8e4b0938824573d5d/?name=2016-017-FA_SeismicImages_browse.jpg
Browse_Graphic_File_Description:
Sample image of a PNG chirp seismic-reflection profile image offshore of 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:
Processed seismic data were converted to PNG format for ease of seismic trace display. Quality control was conducted during processing. The original filenames for the PNG images are generally in the format l###f@_s.png where ### is the name of the trackline along which seismic data were collected, @ is the file iteration (a file iteration greater than 1 indicates that the survey line was split into multiple files during acquisition), and _s indicates that this is the swell-filtered seismic profile. An example of an iterated profile is survey line 38, which was interrupted 5 minutes into the line and then continued with recording to a new seismic file; therefore, there are two tracklines and seismic images for line 38: "l38f1_s.png" and "l38f2_s.png". The seismic profile images were renamed with the file-naming convention 2016017FA_Knudsen_l###f@_s.png, where 2016017FA_Knudsen_ is the field activity identifier followed by the sonar system name (Knudsen) and l###f@_s.png is the original filename. Note the LineName field in the trackline shapefile does not have the _s, but there is an ImageName field in the trackline shapefile that indicates the name of the associated swell-filtered (_s) PNG profile image. There is no data for what would be lines 8 and 41.
Completeness_Report:
There is a single image for every trackline. 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 data
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 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: dfoster@usgs.gov
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 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 150 traces per inch. The profiles contain 80 milliseconds of two-way travel time within a 14-inch vertical window, yielding approximately 5.7 milliseconds per inch. Postscript images were converted to PNG format using ImageMagick (version 6.6.1). The x-axis units of the images are shot number while the y-axis is two-way travel time in seconds (note: extremely short lines may not display a complete x-axis in these images).
Process_Date: 2016
Process_Step:
Process_Description:
A shell script was used to prepend the field activity identifier and the system name to the original seismic profile names. See Logical_Consistency_Report above for more information.
Process_Date: 20190307
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: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: 2016-017-FA_SeismicImages
Entity_Type_Definition: PNG images of chirp seismic-reflection profiles
Entity_Type_Definition_Source: U.S. Geological Survey
Overview_Description:
Entity_and_Attribute_Overview:
The PNG images can be hyperlinked to their polyline shapefile location in ArcGIS. The images show two-way travel time (seconds) on the y-axis and distance along profile (in 500-shot intervals) on the top x-axis.
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: sciencebase@usgs.gov
Resource_Description:
USGS data release 2016-017-FA seismic profile images in PNG format from offshore of Town Neck Beach in Sandwich, Massachusetts, in May 2016 during USGS field activity 2016-017-FA. This dataset contains 62 PNG images 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: PNG
Format_Version_Number: ImageMagick (version 6.6.1)
Format_Specification: Portable Network Graphic (PNG)
Format_Information_Content:
This dataset contains seismic-reflection profile images in PNG format of Knudsen 3202 chirp seismic data collected by the U.S. Geological Survey Woods Hole Coastal and Marine Science Center from offshore of Town Neck Beach in Sandwich, Massachusetts, and the associated metadata.
Transfer_Size: 51
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/5c926dc8e4b0938824573d5d
Network_Resource_Name:
https://www.sciencebase.gov/catalog/file/get/5c926dc8e4b0938824573d5d
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.
Fees: none
Technical_Prerequisites:
These data can be viewed with any PNG image viewing software. If the user has downloaded a zip file, it must be uncompressed in order to view the PNG images. The user must have software capable of uncompressing the zip file and displaying the PNG images. To use these images in conjunction with geospatial data (e.g., hotlinked to the seismic tracklines data in ArcGIS), a geospatial data viewer must be used.
Metadata_Reference_Information:
Metadata_Date: 20200807
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: sackerman@usgs.gov
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_SeismicImages_meta.html>
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