U.S. Geological Survey
20200409
Multibeam echo sounder - navigation tracklines for Reson 7160 data collected during USGS field activities 2017-001-FA and 2017-002-FA.
1.0
vector digital data
data release
DOI:10.5066/P9Y1MSTN
Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/P9Y1MSTN
https://www.sciencebase.gov/catalog/item/5e1e3815e4b0ecf25c610e23
Wayne E. Baldwin
Eric M. Moore
Charles R. Worley
Alex R. Nichols
Carolyn D. Ruppel
2020
Marine Geophysical Data Collected to Support Methane Seep Research Along the U.S. Atlantic Continental Shelf Break and Upper Continental Slope Between the Baltimore and Keller Canyons During U.S. Geological Survey Field Activities 2017-001-FA and 2017-002-FA.
1.0
data release
DOI:10.5066/P9Y1MSTN
Reston, VA
U.S. Geological Survey
Suggested citation: Baldwin, W.E., Moore, E.M., Worley, C.R., Nichols, A.R., and Ruppel, C.D., 2020, Marine Geophysical Data Collected to Support Methane Seep Research Along the U.S. Atlantic Continental Shelf Break and Upper Continental Slope Between the Baltimore and Keller Canyons During U.S. Geological Survey Field Activities 2017-001-FA and 2017-002-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9Y1MSTN.
https://doi.org/10.5066/P9Y1MSTN
https://www.sciencebase.gov/catalog/item/5e179176e4b0ecf25c59f97a
In spring and summer 2017, the U.S. Geological Survey’s Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbottom profiler were deployed during the cruises to map water column backscatter, sea-floor bathymetry and backscatter, and subsurface stratigraphy associated with known and undiscovered sea-floor methane seeps. The first cruise, known as the Interagency Mission for Methane Research on Seafloor Seeps and designated as field activity 2017-001-FA, was conducted from May 4 to May 11, 2017, and acquired geophysical data to support remotely operated vehicle exploration of seep sites using the Global Explorer, which is operated by Oceaneering International, Inc. Geophysical operations during cruise 2017-002-FA from August 25 to September 6, 2017, were also focused on mapping water column methane plumes, sea-floor seep sites, and subseafloor strata, but primarily supported conductivity, temperature, and depth instrument deployment, surface-water methane-concentration mapping, and water-sampling operations as part of a collaborative study with the University of Rochester of the effect of methane seepage on ocean water biogeochemistry. The National Oceanic and Atmospheric Administration’s Office of Ocean Exploration and Research partially sponsored cruise 2017-001-FA, and the U.S. Department of Energy partially sponsored both cruises.
This dataset contains trackline navigation for approximately 412 km of Reson 7160 multibeam echo sounder bathymetry and backscatter data collected by the U.S. Geological Survey during USGS field activities 2017-001-FA and 2017-002-FA along the U.S. Atlantic continental shelf break and upper slope between Accomac and Keller Canyons. This information can help spatially correlate the bathymetry and backscatter data with other geophysical and sample data.
Support for 2017-001-FA was provided to the USGS by NOAA and DOE through interagency agreements 16-01118 and DE-FE0023495, respectively. Support for 2017-002-FA was provided to the USGS and the University of Rochester by DOE through interagency agreement DE-FE0026195 and grant DE-FE0028980, respectively. Additional information on the field activity is available from https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-001-FA and https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-002-FA. Additional information specific to the Interagency Mission for Methane Research on Seafloor Seeps is available at https://www.usgs.gov/centers/whcmsc/science/immerss-interagency-mission-methane-research-seafloor-seeps?qt-science_center_objects=0#qt-science_center_objects and https://archive.usgs.gov/archive/sites/soundwaves.usgs.gov/2017/05/outreach.html.
20170509
20170906
ground condition
None planned.
-74.860827
-74.022091
37.848654
35.510819
USGS Metadata Identifier
USGS:5e1e3815e4b0ecf25c610e23
None
U.S. Geological Survey
USGS
Woods Hole Coastal and Marine Science Center
WHCMSC
Coastal and Marine Hazards and Resources Program
CMHRP
Department of the Interior
DOI
National Oceanic and Atmospheric Administration - Office of Ocean Exploration and Research
NOAA-OER
Department of Energy
DOE
University of Rochester
field activity number 2017-001-FA
HRS1704
Interagency Mission for Methane Research on Seafloor Seeps
IMMeRSS
field activity number 2017-002-FA
HRS1713
R/V Hugh R. Sharp
shapefile
trackline navigation
multibeam echo sounder
multibeam bathymetry
multibeam time-series backscatter
Reson
7160
Reson s7k format
HYPACK HYSWEEP HSX and 7K formats
ISO 19115 Topic Category
oceans
geoscientificInformation
location
USGS Thesaurus
multibeam sonar
bathymetry
sea-floor acoustic reflectivity
marine geophysics
marine geology
navigational data
geospatial datasets
None
United States of America
Atlantic Ocean
Atlantic Margin
Accomac Canyon
Washington Canyon
Norfolk Canyon
Keller Canyon
Chincoteague Ridge
None
sea floor
seafloor
none
2017
none
Public domain data from the U.S. Government are freely distributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the data set.
U.S. Geological Survey
Wayne E. Baldwin
Geologist
mailing and physical
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
US
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
https://www.sciencebase.gov/catalog/file/get/5e1e3815e4b0ecf25c610e23/?name=2017-001-FA_2017-002-FA_7160Tracklines_browse.jpg
Multibeam echo sounder tracklines around Keller Canyon.
JPG
Demopoulos, A.
McClain-Counts, J.
Bourque, J.
Prouty, N.
Smith, B.
Brooke, S.
Ross, S.
Ruppel, C.
2019
Examination of Bathymodiolus childressi nutritional sources, isotopic niches, and food-web linkages at two seeps in the US Atlantic margin using stable isotope analysis and mixing models.
1.0
document
Deep Sea Research Part I
148, pp.53-66
Amsterdam, Netherlands
Elsevier
https://doi.org/10.1016/j.dsr.2019.04.002
Leonte, M.
Ruppel, C. D.
Ruiz‐Angulo, A.
Kessler, J. D.
2020
Surface methane concentrations along the Mid‐Atlantic Bight driven by aerobic subsurface production rather than seafloor gas seeps.
1.0
document
Journal of Geophysical Research: Oceans
vol. 125
Washington, DC
American Geophysical Union Publications
https://doi.org/10.1029/2019JC015989
Ruppel, C.
Demopoulos, A.
Prouty, N.
2018
Exploring US Mid-Atlantic Margin Methane Seeps: IMMeRSS, May 2017.
1.0
document
Supplement to Oceanography
31(1), p.93
Rockville, MD
The Oceanography Society
https://doi.org/10.5670/oceanog.2018.supplement.01
Multibeam echo sounder (MBES) data were primarily collected overnight (between approximately 24:00 and 10:00 UTC) during field activities 2017-001-FA and 2017-002-FA. Raw MBES data were recorded in both the Reson SeaBat User Interface (s7k format) and HYPACK HYSWEEP (HSX and 7K pair file formats) acquisition software. Reson s7k files contain seafloor bathymetry and backscatter and uncompressed water column backscatter data, while HYPACK HYSWEEP HSX and 7K paired files contain seafloor bathymetry and backscatter, respectively. The additional volume of water column data saved to the s7k raw files resulted in a greater number than the HSX/7K pair files; one HSX/7K pair encompasses the same coverage as one or more s7k files. Reson s7k files were primarily used for bathymetry and backscatter processing, but problems with navigation and telemetry during acquisition made the use of several HSX files necessary because the problems did not affect HYPACK HYSWEEP acquisition. The column "LineName" in the attribute table of '2017-001-FA_2017-002-FA_7160Tracklines.shp' indicates the file type used for processing; Reson s7k filenames have the Reson SeaBat User Interface default format 'YYYYMMDD_HHMMSS' indicating UTC start date and time; HYPACK HYSWEEP filenames have the format 'YYYYMMDD_HHMMSS_LLL_HHMM', which prepends the Reson filename (for the first equivalent file encompassed by the corresponding HYPACK HYSWEEP file) to the HYPACK HYSWEEP filename, which indicates the three digit planned line number and the UTC time. Navigation for each of the file formats is identical (though files may differ in start or end times by several seconds) and polylines included in '2017-001-FA_2017-002-FA_7160Tracklines.shp' are indicative of all data used for processing.
This shapefile includes trackline navigation for all multibeam echo sounder data collected during field activities 2017-001-FA and 2017-002-FA, except for those collected during troubleshooting of MBES system navigation and telemetry problems conducted on May 4 (JD124) 13:10 - 13:25 UTC, May 7 (JD127) 05:21 - 05:39, and May 8 (JD128) 03:37 - 08:57. While the line navigation for all the data are included in this shapefile, the final bathymetry grids or backscatter mosaics may not include all data from all lines.
Navigation data were acquired using the WGS 84 coordinate system with an Applanix POS MV Wavemaster (model 220, v5), which blends Global Navigation Satellite System (GNSS) and acceleration data from an Inertial Motion Unit (IMU) and GPS azimuthal heading. The POS MV was configured with two Trimble GPS antennas located at either end of a 2-m baseline, which was oriented fore and aft and mounted atop the MBES pole just aft of the bosun's locker on the port side of vessel. GPS positions were obtained from the primary antenna located on the forward end of the baseline, and the positional offsets between the antenna and the navigational reference point (the POS MV IMU) were accounted for in the Applanix POSView (version 8.60) acquisition software. Positions from the POS MV are assumed to be horizontally accurate to 3 meters.
U.S. Geological Survey
Unpublished Material
raw multibeam echo sounder data
digital data
disc
20170509
20170906
ground condition
Reson 7160 multibeam echo sounder data
Multibeam echo sounder seafloor bathymetry and backscatter and water column backscatter data were collected using a Reson 7160 (44 kHz center frequency, 512 beams, 1.5 x 2 degree across- and along-track beam widths, respectively). The Mills Cross transmit and receive transducer arrays were pole-mounted on the port side of the R/V Hugh R Sharp just aft of the Bosun's locker with the transducers positioned approximately 2.8 m below the waterline when deployed. Vessel navigation and attitude data were acquired with an Applanix POS MV Wavemaster (model 220, v5) configured with two Trimble GPS antennas located at either end of a 2-m baseline oriented fore and aft and mounted atop the MBES pole, and the wet pod IMU mounted atop the sonar bracket just aft of the pole. An AML Micro X SV mounted on the sonar bracket monitored sound speed in water near the sonar during acquisition, and water column sound speed profiles were collected using Sippican T4 and T5 Expendable Bathythermograph probes and Seabird Electronics 911plus CTD casts at various points during both cruises (see shapefile '2017-001-FA_2017-002-FA_SVPdata.shp' available from the larger work citation). The Reson SeaBat User Interface (version 4.0.0.10) was used to control the sonar, which was operated primarily in FM mode at various power levels throughout the cruises. The range of the 512 across-track beams formed by the sonars were adjusted manually depending on water depth. Data were monitored and recorded using the Reson SeaBat User Interface (version 4.0.0.10) and HYPACK HYSWEEP (version 2017, 17.1.3.0). The SeaBat User Interface logged navigation, attitude, bathymetry, time-series backscatter, and water column data to s7k format files. HYPACK HYSWEEP logged navigation, attitude, and bathymetry data to HSX format files, and navigation, attitude, and time series backscatter data to 7K format files. Patch test calibrations were performed during each field activity to determine possible misalignments between the MBES and POS MV reference frames or systematic timing latencies.
Shipboard multibeam processing within Computer Aided Resource Information System (Caris) Hydrographic Information Processing System (HIPS; version 9) consisted of the following flow:
1) Caris HIPS projects were created to process 7160 data. Projection information was set to Universal Transverse Mercator (UTM) Zone 18N, WGS 84.
2) Vessel configuration files were created in the Caris projects for the R/V Hugh R. Sharp, which included relevant linear and angular installation offsets for the 7160 installation as well as vendor specified uncertainty values for each of the survey sensors.
3) Raw files were imported to the Caris projects using the Import/Conversion Wizard.
4) Delayed heave and navigation data (navigation only loaded for HSX data used from JD238 of 2017-002-FA) from raw POS MV files were used to update HIPS survey lines using the import auxiliary data function.
5) Navigation was reviewed and edited as needed using the Navigation Editor tool.
This process step and all subsequent process steps were conducted by Eric Moore and Wayne Baldwin, though Baldwin is listed as the contact.
2017
U.S. Geological Survey
Wayne Baldwin
Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
508-548-8700 x2226
508-457-2310
wbaldwin@usgs.gov
Extract and reformat the navigation fixes stored in the Caris HIPS database and add them to a geospatial SQLite (version 3.21.0) database:
1) Navigation for each line in Caris HDCS directory was extracted using the Caris program printfNav. (Extracted navigation file is tab-delimited in format YYYY-JD HH:MM:SS:FFF DD.LAT DD.LONG SSSSS_VVVVV_YYYY-JD_LLLL AR where YYYY=year, JD=Julian Day, HH=hour, MM=minute, SS=seconds, FFF=fractions of a second, DD.LAT=latitude in decimal degrees, DD.LONG=longitude in decimal degrees, SSSSS=survey name, VVVVV=vessel name, LLLL=linename, AR=accepted or rejected navigation fix). This step creates the directory of TXT navigation files for each survey line in the Caris project.
2) A Python script (pySQLBathNav) parsed each printfNav output file, to remove rejected navigation records, and add accepted records as point geometries to a geospatial SQLite database (which was created if it did not already exist). Additional fields for survey ID, vessel name, and system name were added during parsing. Polyline geometries were created from the point geometries for each survey line, using UTC time as the sort order field, and fields for JD
201806
Create Esri shapefile containing the polyline data:
The polyline features for each field activity were added (Add Data) into ArcMap (version 10.7.1) from the SQLite database, then exported (Right click on database feature class > Data > Export Data) to the new Esri polyline shapefiles 2017-001-FA_7160Tracklines.shp and 2017-002-FA_7160Tracklines.shp. The ArcGIS process 'Merge' was used to combine both trackline datasets into the single shapefile 2017-001-FA_2017-002-FA_7160Tracklines.shp
201911
Added keywords section with USGS persistent identifier as theme keyword.
20200806
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
Vector
string
1108
0.000001
0.000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
2017-001-FA_2017-002-FA_7160Tracklines
Reson 7160 multibeam echo sounder tracklines for USGS field activities 2017-001-FA and 2017-002-FA along the U.S. Atlantic continental shelf break and upper slope between Accomac and Keller Canyons.
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.
LineName
Reson SeaBat User Interface s7k or HYPACK HYSWEEP HSX/7K pair filename for the 7160 MBES trackline. See logical consistency report for naming format description.
U.S. Geological Survey
Character set
YJD_init
Year and Julian date at the start of the survey line in the format: YYYY-JD; where Julian day is the integer number (although recorded here in text string format) representing the interval of time in days since January 1 of the year of collection.
U.S. Geological Survey
Character set
JDUTC_init
Julian day and UTC time at the start of the survey line in the format: JD:HH:MM:SS; Julian day is the integer number (although recorded here in text string format) representing the interval of time in days since January 1 of the year of collection.
U.S. Geological Survey
Character set
YJD_end
Year and Julian date (YYYY-JD) at the end of the survey line.
U.S. Geological Survey
Character set
JDUTC_end
Julian day and UTC time (JD:HH:MM:SS) at the end of the survey line.
U.S. Geological Survey
Character set
SurveyID
WHCMSC field activity identifier (e.g. "2017-001-FA" where 2017 is the survey year, 001 is survey number of that year, and FA is Field Activity).
U.S. Geological Survey
Character set
VehicleID
Survey vessel name.
U.S. Geological Survey
Character set
DeviceID
Sonar device used to collect MBES data.
U.S. Geological Survey
Character set
Length_km
Length of swath data line in kilometers (UTM Zone 18N, WGS 84) calculated in the SQLite database.
U.S. Geological Survey
0.008
16.971
kilometers
0.001
U.S. Geological Survey - ScienceBase
mailing and physical address
Federal Center
Building 810
Mail Stop 302
Denver
CO
80225
1-888-275-8747
USGS data release of Reson 7160 MBES trackline data collected along the U.S. Atlantic continental shelf break and upper slope between Accomac and Keller Canyons during USGS field activities 2017-001-FA and 2017-002-FA: includes '2017-001-FA_2017-002-FA_7160Tracklines.shp' containing the trackline features, the browse graphic '2017-001-FA_2017-002-FA_7160Tracklines_browse.jpg', and the Federal Geographic Data Committee (FGDC) Content Standards for Digital Geospatial Metadata (CSDGM) metadata file '2017-001-FA_2017-002-FA_7160Tracklines_meta.xml'.
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.
Shapefile
ArcMap 10.7.1
Shapefile
Shapefile of MBES tracklines collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center along the U.S. Atlantic continental shelf break and upper slope between Accomac and Keller Canyons during field activities 2017-001-FA and 2017-002-FA and the associated metadata.
none
5.4
https://www.sciencebase.gov/catalog/item/5e1e3815e4b0ecf25c610e23
https://www.sciencebase.gov/catalog/file/get/5e1e3815e4b0ecf25c610e23
https://doi.org/10.5066/P9Y1MSTN
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.
none
To utilize these data, the user must have software capable of reading shapefile format.
20200806
U.S. Geological Survey
Wayne E. Baldwin
Geologist
mailing and physical
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
(508) 548-8700 x2226
(508) 457-2310
wbaldwin@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time