Page C. Valentine
2017
Video transects of the sea floor on Stellwagen Bank on U.S. Geological Survey field activity 2015-062-FA, aboard the R/V Auk, Oct. 21 and 22 and Nov. 3 and 4 2015 (geographic, WGS84, 2015-062-FA_driftlines.shp polyline)
1.0
Vector Digital Data Set (Polyline)
data release
DOI:10.5066/F7N015FS
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/F7N015FS
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-062-FA/
Page C. Valentine
VeeAnn A. Cross
2017
Sea floor sediment samples, seabed imagery, and CTD data collected in Stellwagen Bank National Marine Sanctuary, MA in 2015, U.S. Geological Survey Field Activity 2015-062-FA
1.0
data release
DOI:10.5066/F7N015FS
Reston, VA
U.S. Geological Survey
Suggested citation: Valentine, P.C. and Cross, V.A., 2017, Sea floor sediment samples, seabed imagery, and CTD data collected in Stellwagen Bank National Marine Sanctuary, MA in 2015, U.S. Geological Survey Field Activity 2015-062-FA: U.S. Geological Survey data release, https://doi.org/10.5066/F7N015FS.
https://doi.org/10.5066/F7N015FS
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-062-FA/
This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen Bank National Marine Sanctuary, and the data collected will aid research on the ecology of fish and invertebrate species that inhabit the region. The Sanctuary's research vessel, R/V Auk, visited 75 locations on Stellwagen Bank at which a customized Van Veen grab sampler (SEABOSS) equipped with a video camera and a CTD was deployed in drift mode to collect sediment for grain-size analysis, video imagery of the seabed, and temperature, conductivity, and depth measurements of the water column. Additional information regarding this field activity is available from https://cmgds.marine.usgs.gov/fan_info.php?fa=2015-062-FA.
These tracklines record the location of the R/V Auk while collecting continuous video of the sea floor. These tracklines will help geolocate the information displayed in the video to the sea floor. This information will be used in making the seabed geologic map.
20151021
20151104
ground condition of when data were collected. There were four days of data collection. October 21-22 and November 3-4, 2015.
None planned
-70.457460
-70.138620
42.420970
42.150820
USGS Metadata Identifier
USGS:f3cea39e-fdc0-4c3e-b662-d59f7993bdff
None
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Woods Hole Coastal and Marine Science Center
WHCMSC
stations
navigation
video
trackline
polyline shapefile
SEABed Observation and Sampling System
SEABOSS
ISO 19115 Topic Category
oceans
location
USGS Thesaurus
videos
navigational data
sea-floor characteristics
None
North America
United States
Massachusetts
Atlantic Ocean
Stellwagen Bank
Stellwagen Bank National Marine Sanctuary
SBNMS
Massachusetts Bay
None.
Not to be used for navigation.
U.S. Geological Survey
Page C. Valentine
Research Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
(508) 548-8700 x2239
(508) 457-2310
pvalentine@usgs.gov
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-062-FA/data/imagery/2015-062-FA_video_driftlines_browse.jpg
Browse graphic showing the video drift lines.
JPEG
D.S. Blackwood
K.F. Parolski
2001
Seabed observation and sampling system
Sea Technology
v. 42, no. 2, p.39-43
P. Valentine
D. Blackwood
K. Parolski
2000
Seabed observation and sampling system
U.S. Geological Survey Fact Sheet
FS-142-00
Reston, VA
U.S. Geological Survey
https://pubs.usgs.gov/fs/fs142-00/
Each record within the shapefile has the same information and was derived in the same manner.
This represents the video trackline information for every video drift line obtained during this cruise.
The location information for stations was acquired from a satellite navigation receiver (Furuno satellite compass SC-30, GPS receiver) at one second intervals with a horizontal accuracy of 10 m. The navigation antenna is located 5.3 m forward of the SEABOSS deployment location. This offset was not accounted for in the navigation acquisition (navigation fixes represent antenna location).
Video methods and data availability:
Seabed video images were collected using a battery-operated, high-definition (1920 x 1080 pixels) GoPro digital video camera mounted on the USGS SEABed Observation and Sampling System (SEABOSS). The SEABOSS system actually had two GoPro cameras attached to it - with the second camera mounted a little higher on the frame which only shows a partial view of the seabed. This second camera was used only to observe obstacles, like gill nets and lobster gear, in order to avoid entanglement. Or, in the case of station 4382, provide a backup system if the primary camera failed.
As the SEABOSS drifted over the seabed, the forward-looking camera imaged the seabed at a rate of 60 frames per second from an altitude of ~1 meter. Lighting was provided by two, battery-operated Keldan LED video lights. Each light provided a light flux of up to 9000 lumens at a correlated color temperature of 5000 kelvins. Two parallel red lasers mounted 20 centimeters apart provided a scale in the video images.
Video imagery includes the launch and recovery of the SEABOSS, transit through the water column, and the drift over the seabed. The duration of individual video files ranges from 4 to 12 minutes. Video files are archived in .MP4 format and range in size from 0.9 to 2.6 gigabytes. These video files are not available as part of this data release.
Video files are archived at the USGS Woods Hole Coastal and Marine Science Center, 384 Woods Hole Road, Woods Hole, MA 02543.
The position (lat/lon) of the start of the video drift was recorded (from the navigation receiver) in the log book at the time of the deployment of the SEABOSS. Video was recorded during the descent through the water column (1-2 minutes), during the drift over the seabed, and during the ascent to the surface. The position (lat/lon) of the end of the video drift was recorded at the beginning of the ascent through the water column. The corresponding times are also recorded.
2015
U.S. Geological Survey
Page C. Valentine
Research Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
(508) 548-8700 x2239
(508) 457-2310
pvalentine@usgs.gov
The original raw $GPGGA navigation (available from the Larger Work citation) was run through an awk script (on a machine running CYGWIN) in order to reformat the latitudes and longitudes into decimal degrees and output the data into a comma-delimited text file with the following columns of information: latitude (decimal degrees), longitude (decimal degrees), hour, minute, second, julian day, year. The julian day was determined by the original start date in the filename of the navigation file as the GPGGA string does not contain any date information. The awk script also made sure that there were not duplicate records in terms of time - such as two navigation points recorded at 16:38:23. However, the script does not check for duplicate coordinate fixes. The individual navigation files were concatenated into a single file - in order of acquisition. This process step and the remaining process steps were performed by the same person - VeeAnn A. Cross.
AUK2015062_21oct2015_UTC_nav_raw.csv
AUK2015062_22oct2015_UTC_nav_raw.csv
AUK2015062_03nov2015_UTC_nav_raw.csv
AUK2015062_04nov2015_UTC_nav_raw.csv
2016
oct21nav.csv
oct22nav.csv
nov3nav.csv
nov4nav.csv
allnav_noheader_clean_nodupes.csv
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
Another awk script was run on the stations summary csv file to extract the following columns of information: station, julian day of video start, UTC time of video start, julian day of video end, UTC time of video end, year
2015-062-FA_station_data_summary.csv
2016
auk201506s_justdrifttime.csv
A python script (driftlog_gui_v5.py) run from python IDLE version 2.7.8 was used to extract all the navigation points from the navigation file based on the start and end time recorded in the log book of the video drift. This was necessary because no time was recorded on the GoPro video, just the time the video file was created. Ideally, there is a match of the same time (with a corresponding navigation fix) in the GPS file to the start video time recorded in the log book. Same thing with the ending time. However, if this situation does not exist, then the closest (in time) navigation record to the start and end time of the video transect is used - along with all the navigation points in between those two times.
The python script also combines the extracted points for each video drift line and combines these points into a polyline within a shapefile. The resulting shapefile has a polyline for every video drift comprised of all the navigation points available corresponding to the start and end time of each drift line. Based on the navigation system, the projection of the dataset was set to geographic, WGS 84.
allnav_noheader_clean_nodupes.csv
auk201506s_justdrifttime.csv
2016
2015-062-FA_video_driftlines.shp
Added keywords section with USGS persistent identifier as theme keyword.
20200908
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
75
0.00001
0.00001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
2015-062-FA_video_driftlines.shp
polyline shapefile of video drift transects
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.
ID
Unique identifier for each record in the polyline shapefile.
U.S. Geological Survey
0
74
Survey
Name or number of cruise on which sample collected. The cruise identifier is in the format YYYY-XXX where YYYY is the survey year, and XXX is the survey number of that year.
U.S. Geological Survey
Character string.
Station
Sample or station name or number as assigned in the field by the Chief Scientist.
U.S. Geological Survey
Character set. Although numeric, stations could have a decimal number indicating a reoccupation of a station.
Year
Year the station was occupied.
U.S. Geological Survey
2015
2015
JD
Julian day is the integer number representing the interval of time in days since January 1 of the year of collection. Based on the date in UTC time at the time of deployment of the SEABOSS.
U.S. Geological Survey
294
308
LineStart
Start time of the video drift as recorded in the log book, in UTC time in HH:MM:SS.
U.S. Geological Survey
Text field presented as a number.
LineEnd
End time of the video drift as recorded in the log book, in UTC time in HH:MM:SS.
U.S. Geological Survey
Text field presented as a number.
GPSStart
Time in the GPS navigation file that is closest to the start time of the video drift as recorded in the log book. UTC time in HH:MM:SS.
U.S. Geological Survey
Text field presented as a number.
GPSEnd
Time in the GPS navigation file that is closest to the end time of the video drift as recorded in the log book. UTC time in HH:MM:SS.
U.S. Geological Survey
Text field presented as a number.
U.S. Geological Survey
Page C. Valentine
Research Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
USA
(508) 548-8700 x2239
(508) 457-2310
pvalentine@usgs.gov
2015-062-FA_video_driftlines.zip contains the shapefile 2015-062-FA_video_driftlines.shp and the other shapefile components as well as the browse graphic (2015-062-FA_driftlines_browse.jpg). The zip file also contains the FGDC CSDGM metadata in TXT, XML, and HTML 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.
Shapefile
ArcGIS 10.3.1
The zip file contains the video drift transects polyline shapefile, along with the FGDC CSDGM metadata.
0.1
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-062-FA/data/imagery/2015-062-FA_video_driftlines.zip
https://doi.org/10.5066/F7N015FS
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-062-FA/
The first link is to download the data in a zip file. The second and third links are to the landing page of the data. Although the last two links go to the same place, one is the DOI designation of the publication.
none
These data are available in Esri shapefile format. The user must have software capable of reading this format. The data are available for download in zip format.
20200908
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
mailing and physical address
384 Woods Hole Rd.
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998