U.S. Geological Survey
2019
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)
1.0
vector digital data
data release
DOI:10.5066/P9HZHXXV
Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
U.S. Geological Survey, Coastal and Marine Hazards and Resources Program
https://doi.org/10.5066/P9HZHXXV
https://www.sciencebase.gov/catalog/item/5c926dbbe4b0938824573d52
Seth D. Ackerman
David S. Foster
William W. Danforth
Emily C. Huntley
2019
High-resolution geophysical and sampling data collected off Town Neck Beach in Sandwich, Massachusetts, 2016
1.0
data release
DOI:10.5066/P9HZHXXV
Reston, VA
U.S. Geological Survey
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.
https://doi.org/10.5066/P9HZHXXV
https://www.sciencebase.gov/catalog/item/5c7fe3afe4b0938824443b00
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.
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.
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.
20160517
20160523
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.
None planned
-70.494732
-70.456610
41.786529
41.761278
USGS Metadata Identifier
USGS:5c926dbbe4b0938824573d52
None
U.S. Geological Survey
USGS
Coastal and Marine Hazards and Resources Program
CMHRP
Woods Hole Coastal and Marine Science Center
WHCMSC
seafloor
sea floor
marine geology
field activity 2016-017-FA
navigation shotpoint
seismic navigation
seismic reflection
subbottom
chirp
Knudsen 3202
R/V Rafael
USGS Thesaurus
marine geophysics
navigational data
seismic methods
seismic reflection methods
sub-bottom profiling
ISO 19115 Topic Category
oceans
location
geoscientificInformation
None
North America
United States
Atlantic Ocean
Gulf of Maine
Massachusetts
Cape Cod Bay
Cape Cod
Sandwich
Town Neck Beach
None
Seafloor
Sea floor
Surface
Subsurface
None
2016
None
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.
Seth Ackerman
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2315
508-457-2310
sackerman@usgs.gov
https://www.sciencebase.gov/catalog/file/get/5c926dbbe4b0938824573d52/?name=2016-017-FA_SeismicShot500_browse.jpg
Knudsen 3202 500-shotpoint navigation off Town Neck Beach in Sandwich, Massachusetts.
JPEG
Jack Cohen
John Stockwell
2011
CWP/SU: Seismic Un*x Release No. 4.2
Golden, CO
Center for Wave Phenomena - Colorado School of Mines
https://github.com/JohnWStockwellJr/SeisUnix
Paul Henkart
2011
SIOSEIS
LaJolla, CA
Scripps Institution of Oceanography, University of California - San Diego
http://sioseis.ucsd.edu/index.html
Michael W. Norris
Alan K. Faichney
2002
SEGY Rev.1 Data Exchange Format 1
Tulsa, OK
Society of Exploration Geophysicists
http://www.seg.org/documents/10161/77915/seg_y_rev1.pdf
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.
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.
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.
U.S. Geological Survey
Unpublished Material
raw seismic navigation
disc
20160517
20160523
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.
Knudsen 3202 seismic data
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).
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.
2016
David Foster
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Rd
Woods Hole
MA
02543-1598
USA
508-548-8700 x2271
508-457-2310
dfoster@usgs.gov
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.
2016
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.
2016
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.
20190222
Seth Ackerman
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2315
508-457-2310
sackerman@usgs.gov
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
20190301
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.
20190301
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.
201903
Added keywords section with USGS persistent identifier as theme keyword.
20200807
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Point
Entity point
435
0.000001
0.000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
2016-017-FA_SeismicShot500
Start, end, and 500-shotpoint interval positions for seismic profiles
U.S. Geological Survey
FID
Internal feature number
Esri
Sequential unique whole numbers that are automatically generated
Shape
Feature geometry.
Esri
Coordinates defining the features
East
Easting coordinate in UTM Zone 19N meters, WGS 84
U.S. Geological Survey
375786.98
378929.78
meters
0.01
North
Northing coordinate in UTM Zone 19N meters, WGS 84
U.S. Geological Survey
4624306.39
4627144.18
meters
0.01
Lon
Longitude coordinate in decimal degrees, WGS 84
U.S. Geological Survey
-70.494732
-70.456610
decimal degrees
0.000001
Lat
Latitude coordinate in decimal degrees, WGS 84
U.S. Geological Survey
41.761278
41.786529
decimal degrees
0.000001
LineName
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".
U.S. Geological Survey
String up to 5 characters
ImageName
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).
U.S. Geological Survey
String up to 35 characters
Shot
Name of seismic shot number (first, last, and every 500 shot between for each survey line)
U.S. Geological Survey
1
5091
shot number
1
Year
Calendar year data were collected
U.S. Geological Survey
2016
2016
Calendar year
1
DayUTC
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).
U.S. Geological Survey
String up to 12 characters
SurveyID
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)
USGS
String up to 11 characters
VehicleID
Name of the survey vessel used for data collection
USGS
String up to 10 characters
DeviceID
Name of the sonar device used to collect seismic-reflection data
USGS
String up to 18 characters
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.
U.S. Geological Survey
U.S. Geological Survey-ScienceBase
mailing and physical address
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
USA
1-888-275-8747
sciencebase@usgs.gov
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.
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.
SHP
SpatiaLite ver. 4.3.0a
point shapefile
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.
1.5
https://www.sciencebase.gov/catalog/item/5c926dbbe4b0938824573d52
https://www.sciencebase.gov/catalog/file/get/5c926dbbe4b0938824573d52
https://doi.org/10.5066/P9HZHXXV
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.
CSV
SpatiaLite ver. 4.3.0a
Comma Separated Value
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.
1.5
https://www.sciencebase.gov/catalog/item/5c926dbbe4b0938824573d52
https://www.sciencebase.gov/catalog/file/get/5c926dbbe4b0938824573d52
https://doi.org/10.5066/P9HZHXXV
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.
none
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.
20200807
Seth Ackerman
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
508-548-8700 x2315
508-457-2310
sackerman@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time