U.S. Geological Survey
2018
Comma separated value (CSV) text file of post-processed kinematic (PPK) data calculated from raw data logged on two Spectra Precision SP80 GNSS receivers during survey 2016-030-FA conducted offshore Sandwich Beach, MA by the U.S. Geological Survey in 2016
1.0
tabular digital data
data release
DOI:10.5066/P9TJIM2M
Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/P9TJIM2M
https://cmgds.marine.usgs.gov/data/field-activity-data/2016-030-FA/
Danforth, W.W.
Sherwood, C.R.
Martini, M.A.
Borden, J.
Brosnahan, S.M.
2018
Sidescan sonar, single beam bathymetry, and navigation collected offshore of Sandwich Beach in 2016, U.S. Geological Field Activity 2016-030-FA
1.0
data release
DOI:10.5066/P9TJIM2M
Reston, VA
U.S. Geological Survey
Suggested citation: Danforth, W.W. Sherwood, C.R., Martini, M.A., Borden, J., and Brosnahan, S.M., 2018, Sidescan sonar, single beam bathymetry, and navigation collected offshore of Sandwich Beach in 2016, U.S. Geological Field Activity 2016-030-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9TJIM2M.
https://doi.org/10.5066/P9TJIM2M
The objectives of the survey were to provide bathymetric and sidescan sonar data for sediment transport studies and coastal change model development for ongoing studies of nearshore coastal dynamics along Sandwich Town Neck Beach, MA. Data collection equipment used for this investigation are mounted on an unmanned surface vehicle (USV) uniquely adapted from a commercially sold gas-powered kayak and termed the "jetyak". The jetyak design is the result of a collaborative effort between USGS and Woods Hole Oceanographic Institution (WHOI) scientists.
This text file represents approximately 26 kilometers of navigation and elevation data collected in 2016. These data were collected by the Woods Hole Coastal and Marine Science Center during USGS field activity 2016-030-FA using a Spectra Precision SP80 GNSS receiver (http://www.spectraprecision.com/eng/sp80.html#.WyQWYDNKjUI) that is rigidly mounted on the jetyak. These data can be used in conjunction with other geophysical and sample data to identify sea-floor morphology and sediment texture.
For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-030-FA.
20160606
20160608
ground condition during 20160606 - 20160608
None planned
-70.487544
-70.471004
41.774016
41.761633
None
USGS
U.S. Geological Survey
CMGP
Coastal and Marine Geology Program
WHCMSC
Woods Hole Coastal and Marine Science Center
Marine Geology
field activity number 2016-030-FA
RTK navigation
post-processed kinematic
Spectra Precision SP80 GNSS receiver
R/V Knob
Jetyak
USGS thesaurus
field methods
field inventory and monitoring
navigational data
GPS measurement
geospatial datasets
geolocation measurement
map coordinate systems
ISO 19115 Topic Category
oceans
elevation
geoscientificInformation
None
North America
United States
Massachusetts
Sandwich Beach
Sandwich
none
Not to be used for navigation. 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 originator of the dataset.
William W. Danforth
U. S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2274
508-457-2310
bdanforth@usgs.gov
This text file contains post-processed kinematic (PPK) navigation and elevation data collected by the Woods Hole Coastal and Marine Science Center during USGS field activity 2016-030-FA using two Spectra Precision SP80 GNSS receivers, one of which is located on the jetyak, and one that is situated on a base station located on Sandwich Beach, MA.
All collected survey line navigation data.
Calculated kinematic horizontal positions have an accuracy of +/- 30 centimeters.
Vertical accuracy of the calculated vertical elevation above datum is +/- 5 centimeters.
U.S. Geological Survey
Unpublished Material
Raw navigation data
disc
20160606
20160608
ground condition during 20160606 - 20160608
Raw Navigation Data
These data were collected using the USGS jetyak, a commercially sold gas-powered kayak built in upstate New York, running pre-planned lines perpendicular to the beach with a 20 meter line spacing. The jetyak has a roto-molded polyethylene hull and an air-cooled 7-horsepower four-stroke engine. It is propelled and steered by means of a water-drive. The boat will run for 8 to 10 hours on 3 gallons of gas at survey speeds of 2 to 6 knots. Modifications were made by USGS and WHOI scientists to make the jetyak autonomous. The two original manual controls (throttle and steering) are replaced by servos: automatic devices that use error-sensing feedback to correct performance, such as those employed in remote-control airplanes and satellite-tracking antennas. The servos are run by an onboard computer developed for aerial drones. This computer, a modified Arduino, includes Ardupilot software and a special circuit board that provides interfaces for the controls, radio, and Global Positioning System receiver (GPS). The only other modification is installation of a centrifugal clutch, which allows the engine to idle without moving the jetyak.
Onboard the Jetyak is a hull mounted Humminbird 898c HD SI Combo GPS Fish Finder that is used for GPS navigation and location in addition to collection of sidescan sonar data at 455 kHz, and depth (bathymetric) data at 83 and 200 kHz. Files are saved in a proprietary Humminbird .SON/.DAT paired data format, contact www.humminbird.com for details. A separate navigation GPS receiver mounted onboard the Jetyak is a Spectra Precision SP80 GNSS receiver (http://www.spectraprecision.com/eng/sp80.html#.WyQWYDNKjUI). This receiver is mounted on top of a pole 1.025 meters in length which is attached to the hull of the jetyak. This receiver is called the "rover", and saves information that will later be used in conjunction with base station established on the beach to calculate kinematic solutions for both the horizontal and vertical coordinates of the rover. The sidescan sonar, navigation, and bathymetry data were processed using Chesapeake Technology 64-bit SonarWiz6 version 6.05.0025 (www.chesapeaketech.com) and ArcGIS version 10.5 (www.esri.com).
Post-Processing kinematic (PPK) procedure:
1. Horizontal coordinates and ellipsoidal heights were recorded using a Spectra Precision SP80 GNSS Receiver mounted onboard the Jetyak, called a rover station.
2. Horizontal coordinates and ellipsoidal heights were also recorded at base station situated on Sandwich Beach using a Spectra Precision SP80 GNSS Single Receiver.
3. The recorded data from the base and rover stations were imported into the Novatel GrafNav GNSS Post-Processing Software. Standard kinematic processing procedures using the software transformed the rover horizontal coordinates into the NAD83 HARN geographic reference frame, and transformed the rover recorded GPS ellipsoidal heights into orthometric heights referenced to NAVD88, the results of which were saved to a comma separated value (CSV) text file (2016-030-FA_orthometric.csv) which contains the calculated horizontal and vertical positions every 30 seconds.
20180521
William W. Danforth
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2274
508-457-2310
bdanforth@usgs.gov
Point
Point
492
0.00000001
0.00000001
Decimal Degrees
D_North_American_1983_HARN
Geodetic Reference System 80
6378137.000000
298.257222
North American Vertical datum of 1988 (NAVD88)
.001
meters
Explicit elevation coordinate included with horizontal coordinates
The first row of the CSV file is a header row, with the remaining rows containing the data.
The comma separated text files contain the following columns:
Column 1 - Year: contains the year the data was collected.
Column 2 - Month: contains the month of the year the data was collected.
Column 3 - Day: contains the day of the month the data was collected.
Column 4 - Hour: contains the hour of the day the data was collected.
Column 5 - Minute: contains the minute of the hour the data was collected.
Column 6 - Second: contains the second of the minute the data was collected.
Column 7 - LonDeg: contains double precision post-processed kinematic longitude in decimal degrees.
Column 8 - LonDeg: contains double precision post-processed kinematic latitude in decimal degrees.
Column 9 - ortho ht (m): contains the orthomatic height in meters of the SP80 receiver above the NAVD88 datum.
U.S. Geological Survey - William Danforth data processor.
William W. Danforth
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2274
508-457-2310
bdanforth@usgs.gov
Windows 10 zip file 2016-030-FA_orthometric.zip containing point post-processed kinematic navigation and elevation data stored in a comma separated value text file (2016-030-FA_orthometric.csv), as well as FGDC CSDGM metadata files (2016-030-FA_orthometric.xml, 2016-030-FA_orthometric.html, 2016-030-FA_orthometric.txt). No browse graphic is available.
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.
CSV
2005
comma separated value text format
Windows 10 zip file containing the CSV formatted text file of post-processed kinematic navigation and elevation data collected by the U.S. Geological Survey during field activity 2016-030-FA offshore Sandwich Beach, MA in June 2016. This also includes associated metadata.
To extract the data, use Windows Explorer (Windows 7, 8, 10), WinZip, 7zip, Peazip or pkUnzip
0.025
https://cmgds.marine.usgs.gov/data/field-activity-data/2016-030-FA/data/navigation/2016-030-FA_orthometric.zip
https://cmgds.marine.usgs.gov/data/field-activity-data/2016-030-FA/
https://doi.org/10.5066/P9TJIM2M
The first link downloads the data in a zip file, the second link is to the landing page of the data, and the third link is the DOI link to the landing page of the data.
none
none
These data are available as text distributed in a comma separated value text format. The CSV file is stored in one folder 'orthometric' that has been compressed using native Windows 10 compression software. To utilize these data, the user must have software capable of uncompressing the zip file. The zip file also contains associated metadata.
20180802
William W. Danforth
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2274
508-457-2310
bdanforth@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time