Page C. Valentine
2019
Navigation data collected on Stellwagen Bank during U.S. Geological Survey field activity 2017-009-FA, aboard the R/V Auk, Jan 30, 2017
1.0
tabular digital data
data release
DOI:10.5066/P9THIZBB
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/P9THIZBB
https://cmgds.marine.usgs.gov/data/field-activity-data/2017-009-FA/
Page C. Valentine
VeeAnn A. Cross
2019
Sea Floor Sediment Samples, Seabed Imagery, and CTD Water Column Data Collected on Stellwagen Bank in January 2017, U.S. Geological Survey Field Activity 2017-009-FA
1.0
data release
DOI:10.5066/P9THIZBB
Reston, VA
U.S. Geological Survey
Suggested citation: Valentine, P.C., and Cross, V.A., 2019, Sea floor sediment samples, seabed imagery, and CTD water column data collected on Stellwagen Bank in January 2017, U.S. Geological Survey Field Activity 2017-009-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9THIZBB .
https://doi.org/10.5066/P9THIZBB
https://cmgds.marine.usgs.gov/data/field-activity-data/2017-009-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 13 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 measurements of water column properties.
These navigation data are provided as an archive of the navigation data files acquired during the survey in the original collected format as well as in reformatted CSV and XLSX formats. The reformatted files add additional information, and most significantly provide that navigation in decimal degrees.
Additional information regarding the field activity can be obtained from https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-009-FA.
20170130
ground condition of when data were collected
None planned
-70.66034
-70.22766
42.19971
41.29025
USGS Metadata Identifier
USGS:d65b7189-3f97-4ac5-8374-ddd2ae36d0b5
None
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Woods Hole Coastal and Marine Science Center
WHCMSC
navigation
ISO 19115 Topic Category
oceans
location
USGS Thesaurus
navigational data
marine geology
Marine Realms Information Bank (MRIB) keywords
marine geology
None
North America
United States
Massachusetts
Atlantic Ocean
Stellwagen Bank
Stellwagen Bank National Marine Sanctuary
SBNMS
Massachusetts Bay
None.
None.
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 navigation was downloaded at the end of the cruise and is available in the original GPGGA format as well as reformatted for easier use. The filenames indicate the cruise and day of navigation. The reformatted version of the navigation excludes the transit navigation between the port and the study area. The original GPGGA navigation filenames are in the format AUK2017009_XXXX_UTC_nav_raw.csv where XXXX is the day of navigation (for example 30jan2017). The filenames of the reformatted navigation are in the format AUK2017009_station_nav_log_XXXX_UTC where XXXX is the day of navigation (for example 30JAN2017). The filename suffix is either XLSX or CSV.
The raw navigation files (with the $GPGGA string) represent all the navigation acquired on the cruise. These files are the original files handed over to the scientist. The reformatted navigation files have removed the transit navigation to and from port to the study area. No other navigation fixes were removed, which could include bad navigation fixes and duplicates.
The location information for stations was acquired from a satellite navigation receiver (Furuno satellite compass SC-30, GPS receiver) at two 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).
The files *_raw.csv are the $GPGGA strings of the raw navigation recorded on the ship each day.
>
The format of the columns of information are as follows:
>
$GPGGA, UTC time, latitude (DDMM.MMMM), latitude hemisphere, longitude (DDMM.MMMM), longitude hemisphere.
>
The first row in the file contains the filename and not the column headers of the data.
20170130
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 $GPGGA strings have the latitude/longitude in the format DDMM.MMMMM with the hemisphere indicated (N for North and W for West). These data were brought into an Excel spreadsheet and converted to decimal degrees using the following formula examples:
>
latitude: (4211.9672-4200)/60+(42) to give 42.19945 decimal degrees
>
longitude: ((7043.2105-7000)/60+70)*-1 to give -70.72018 decimal degrees
>
Additional fields of information were added to the spreadsheet and are defined in the entity and attribute section, as well as within header information in each spreadsheet. The first row is an explanation header, the second row contains descriptive column headers, and the third row contains brief column headers that are compatible with importing the data into a GIS.
The filenames indicate the cruise and day of navigation. The reformatted version of the navigation excludes the transit navigation between the port and the study area. The original GPGGA navigation filenames are in the format AUK2017009_XXXX_UTC_nav_raw.csv where XXXX is the day of navigation (for example 30jan2017). The filenames of the reformatted navigation are in the format AUK2017043_station_nav_log_XXXX_UTC where XXXX is the day of navigation (for example 30JAN2017); the filename suffix is either XLSX or CSV.
2018
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 spreadsheet was opened in Excel (2010). The first row (the explanation header) and the second row (descriptive column headers) were deleted and the third row (brief column headers that are compatible with importing the data into a GIS) was retained. Then the spreadsheet was exported as an MS-DOS CSV file.
2018
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
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
Point
0.00001
0.00001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
navigation log in Excel spreadsheet and CSV format
The Excel spreadsheet has a header (in row 1) explaining the columns of information, row 2 has the header names, row 3 has header names that are appropriate for incorporation into a GIS (shorter names, no punctuation, and the header row of the CSV file) and the remaining rows contain the data in 11 columns. The labels below are the CSV row headers with the first part of the attribute definition the longer Excel header on row 2 of the Excel spreadsheet.
U.S. Geological Survey
VESSEL
Vessel name: The name of the ship that the field activity used for the cruise. The R/V Auk is the Stellwagen Bank National Marine Sanctuary research vessel - a 50 foot catamaran.
U.S. Geological Survey
Text field.
CRUISE_ID
WHCMSC field activity number: The field activity number assigned to the cruise by the Woods Hole Coastal and Marine Science Center. The number is in the format YYYY-XXX where YYYY is the year and XXX is the number activity in that year.
U.S. Geological Survey
Text field.
UTC_DATE
Date, UTC: The date of the row of data collection based on UTC (coordinated universal time) time. In the Excel spreadsheet, the date has the format of D-M-YYYY where D is the numeric day of the month, M is the month abbreviation, and YYYY is the year.
U.S. Geological Survey
Text field.
UTC_JD
Julian Day, UTC: Julian day is the integer number representing the interval of time in days since January 1 of the year of collection.
U.S. Geological Survey
Text field presented as a number.
TIMEZONE
Study area time zone: The time zone in which the study area is located. The time zone of the survey is dependent on the survey date.
U.S. Geological Survey
EST
Eastern Standard Time. To derive EST, subtract 5 hours from the UTC time.
U.S. Geological Survey
Time-UTC-HHMMSS
Time, UTC, HHMMSS: The time of the navigation fix in the format HHMMSS where HH is hour, MM is minutes, and SS is seconds. The times are UTC (coordinated universal time).
U.S. Geological Survey
Text field presented as a number.
DDMM_LAT
Lat N, DDMM.MMMM: The latitude coordinate in the format DDMM.MMMM where DD is degrees and MM.MMMM is decimal minutes. The "N" refers to northern latitude.
U.S. Geological Survey
Text field presented as a number.
DDMM_LON
Lon W, DDMM.MMMM: The longitude coordinate in the format DDMM.MMMM where DD is degrees and MM.MMMM is decimal minutes. The "W" refers to western longitude and serves the place of having a negative value.
U.S. Geological Survey
Text field presented as a number.
LATITUDE
Lat N, decimal degrees: The latitude coordinate in decimal degrees, positive values indicate northern hemisphere.
U.S. Geological Survey
41.29025
42.19971
decimal degrees
LONGITUDE
Lon W, decimal degrees: The longitude coordinate in decimal degrees, negative values indicate the western hemisphere.
U.S. Geological Survey
-70.66034
-70.22766
decimal degrees
AREA
Region: The area of the survey.
U.S. Geological Survey
SBNMS
Stellwagen Bank National Marine Sanctuary
U.S. Geological Survey
The attribute label is the abbreviated label that is more compatible with importing the dataset into a GIS. The first part of the attribute definition is the longer label of the column that is in the second row of the Excel spreadsheet.
The Excel spreadsheet has the following information in the first row describing the spreadsheet.
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GPS navigation log: Column A, vessel name, AUK, SBNMS research vessel; column B, field activity number; column C, date, UTC; column D, Julian Day, UTC; column E, study area time zone; column F, time, UTC (for Eastern Standard Time substract 5 hours); column G, latitude north, degrees and decimal minutes; column H longitude west, degrees and decimal minutes; column I, latitude north, decimal degrees; column J, longitude west, decimal degrees; column K, geographic region [abbreviations: D, degrees; H, hour; M, minute; S, second; EST, Eastern Standard Time; lat, latitude; lon, longitude; WHCMSC, USGS Woods Hole Coastal and Marine Science Center; SBNMS, Stellwagen Bank National Marine Sanctuary; UTC, coordinated universal (Greenwich Mean Time, ZULU time); GPS, satellite-based Global Positioning System receiver]
>
The columns of data are the same as represented in the entity and attribute detail information.
>
The files with the same prefix name, but the CSV extension are exported from the Excel spreadsheet, minus the first two rows of information.
>
The *_raw.csv files are the original $GPGGA strings off the ship. An example row from that file is:
>
$GPGGA,123058,4158.6481,N,7039.2771,W
>
The format of the columns of information are as follows:
>
$GPGGA, UTC time, latitude (DDMM.MMMM), latitude hemisphere, longitude (DDMM.MMMM), longitude hemisphere.
>
The first row in the *raw.csv file contains the filename and not the column headers.
U.S. Geological Survey
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
2017-009-FA_nav.zip contains the navigation acquired on the cruise. The following file is the original $GPGGA navigation: AUK2017009_30jan2017_UTC_nav_raw.csv. The reformatted navigation are available in XLSX format and CSV. The files are as follows: AUK2017009_station_nav_log_30JAN2017_UTC.xlsx, AUK2017009_station_nav_log_30JAN2017_UTC.csv. In addition to the navigation files, the zip file 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.
XLSX
Excel 2016
The zip file contains the navigation in XLSX and CSV formats, along with the FGDC CSDGM metadata.
3
https://cmgds.marine.usgs.gov/data/field-activity-data/2017-009-FA/data/navigation/2017-009-FA_nav.zip
https://doi.org/10.5066/P9THIZBB
https://cmgds.marine.usgs.gov/data/field-activity-data/2017-009-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.
CSV
The zip file contains the navigation in XLSX and CSV formats, along with the FGDC CSDGM metadata.
3
https://cmgds.marine.usgs.gov/data/field-activity-data/2017-009-FA/data/navigation/2017-009-FA_nav.zip
https://doi.org/10.5066/P9THIZBB
https://cmgds.marine.usgs.gov/data/field-activity-data/2017-009-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
The zip file contains data in XLSX and CSV formats. The user must have software capable of uncompressing the zip file and reading the data formats.
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