Page C. Valentine
2021
Navigation data collected on Stellwagen Bank during U.S. Geological Survey field activity 2015-074-FA, aboard the R/V Auk, December 1, 2015
1.0
tabular digital data
data release
DOI:10.5066/P9XPFQ63
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Hazards and Resources Program
https://doi.org/10.5066/P9XPFQ63
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-074-FA/
Page C. Valentine
VeeAnn A. Cross
2021
Station Information, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in December 2015, U.S. Geological Survey Field Activity 2015-074-FA
1.0
data release
DOI:10.5066/P9XPFQ63
Reston, VA
U.S. Geological Survey
Suggested citation: Valentine, P.C., and Cross, V.A., 2021, Station information, seabed imagery, and CTD instrument data collected on Stellwagen Bank in December 2015, U.S. Geological Survey Field Activity 2015-074-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P9XPFQ63 .
https://doi.org/10.5066/P9XPFQ63
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-074-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 21 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 in three different formats: *raw.csv 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 the navigation in decimal degrees.
Additional information regarding the field activity can be obtained from https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-074-FA . The grain-size analyses of the sediment samples collected during this field activity are available in a separate publication (Valentine and Cross, 2019; link available from the cross-reference citation).
20151201
Ground condition when data were collected. There was one day of data collection: December 1, 2015.
None planned
-70.72099
-70.23753
42.20278
42.17434
USGS Metadata Identifier
USGS:5493de94-bdef-4cb4-ac74-e66c11f9035b
None
U.S. Geological Survey
USGS
Coastal and Marine Hazards and Resources Program
CMHRP
Woods Hole Coastal and Marine Science Center
WHCMSC
National Oceanic and Atmospheric Administration
NOAA
navigation
ISO 19115 Topic Category
oceans
location
USGS Thesaurus
navigational data
marine geology
GPS measurement
geolocation measurement
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
Page C. Valentine
VeeAnn A. Cross
2019
Location and analyses of sediment samples collected on Stellwagen Bank off Boston, Massachusetts from November 5, 2013 to April 30, 2019 on U.S. Geological Survey field activities
data release
DOI:10.5066/P9FWFLPD
Reston, VA
U.S. Geological Survey
This publication includes the sediment sample analyses information associated with this field activity and 19 other field activities.
https://doi.org/10.5066/P9FWFLPD
https://www.sciencebase.gov/catalog/item/5d95153ee4b0c4f70d10a4f7
The navigation was downloaded at the end of the cruise and is available in $GPGGA format given to the scientist by the ship, as well as reformatted files for easier use. GPGGA is a National Marine Electronics Association (NMEA) sentence for Global Positioning System (GPS) fix data that includes time, position, and fix related data for a GPS receiver. The reformatted version of the navigation excludes the transit navigation between the port and the study area. The original GPGGA navigation filename is in the format AUK2015074_XXXX_UTC_nav_raw.csv where XXXX is the day of navigation (for example 01dec2015). The filenames of the reformatted navigation are in the format AUK2015074_station_nav_log_XXXX_UTC where AUK2015074 is the cruise ID, and XXXX is the day of navigation (for example 01DEC2015); the filename suffix is either XLSX or CSV.
The raw navigation file (with the $GPGGA string) represents all the navigation acquired on the cruise and was used to determine the bounding coordinates of the dataset. This file is the original file handed over to the chief scientist from the ship personnel. The reformatted navigation files do not include the transit navigation between the port and the study area. No other navigation fixes were removed, so the data could include bad navigation fixes, missing 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 meters. The navigation antenna is located 5.3 meters forward of the SEABed Observation and Sampling System (SEABOSS) deployment location. This offset was not accounted for in the navigation acquisition (navigation fixes represent antenna location).
Raw CSV file: AUK2015074_01dec2015_UTC_nav_raw.csv
The file *_raw.csv is the $GPGGA strings of the raw navigation recorded on the ship. The first row in the file describes the file.
>
For the remaining rows, the format of the columns of information is as follows:
>
$GPGGA, UTC time (HHMMSS), latitude (DDMM.MMMM), latitude hemisphere, longitude (DDMM.MMMM), longitude hemisphere.
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
Reformatted XLSX file: AUK2015074_station_nav_log_01DEC2015_UTC.xlsx
The $GPGGA strings have the latitude and longitude in the degrees decimal minutes format DDMM.MMMM 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 with negative for western hemisphere
>
Additional fields of information were added to the spreadsheet and are defined in the entity and attribute section, as well as within the 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 reformatted version of the navigation excludes the transit navigation between the port and the study area.
2019
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 XLSX spreadsheet was opened in Microsoft Excel (2013). 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 with the same prefix filename as the Excel file.
2019
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
Point
0.00001
0.00001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
processed navigation data 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 representing the longer Excel header in row 2 of the Excel spreadsheet. The range of values represent the processed navigation, which excludes the transit coordinate fixes in the raw navigation. The bounding coordinates of the dataset as a whole represents the raw navigation.
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 data collection for the given row based on UTC (Coordinated Universal Time) time. 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: Julian day of data collection based on UTC time. 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
UTC_TIME
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
42.17434
42.19773
decimal degrees
LONGITUDE
Lon W, decimal degrees: The longitude coordinate in decimal degrees; negative values indicate western hemisphere.
U.S. Geological Survey
-70.28181
-70.23753
decimal degrees
AREA
Region: The area of the survey.
U.S. Geological Survey
SBNMS
Region: Stellwagen Bank National Marine Sanctuary
U.S. Geological Survey
The attribute label is the abbreviated label in row 3 of the Excel file 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:
>
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 subtract 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 11 columns of data are the same as those represented in the entity and attribute detailed description.
>
The file with the same prefix name, but the CSV extension was exported from the Excel spreadsheet, minus the first two rows of information.
>
The *_raw.csv file is the original $GPGGA strings off the ship. The first row in the *raw.csv file describes the file. For the remaining rows, the format of the columns of information is as follows:
>
$GPGGA, UTC time (HHMMSS), latitude (DDMM.MMMM), latitude hemisphere, longitude (DDMM.MMMM), longitude hemisphere.
>
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
2015-074-FA_nav.zip contains the navigation acquired on the cruise. The following file is the original GPGGA navigation: AUK2015074_01dec2015_UTC_nav_raw.csv. The reformatted navigation is available in XLSX format and CSV. The files are as follows: AUK2015074_station_nav_log_01DEC2015_UTC.xlsx and AUK2015074_station_nav_log_01DEC2015_UTC.csv. In addition to the navigation files, the ZIP file contains the FGDC CSDGM metadata in XML format.
Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. 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 2013
The ZIP file contains the navigation in XLSX and CSV formats, along with the FGDC CSDGM metadata.
1
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-074-FA/data/navigation/2015-074-FA_nav.zip
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-074-FA/
https://doi.org/10.5066/P9XPFQ63
The first link is to download the data in a ZIP file. The second and third links, the latter of which is the DOI designation of the publication, both go to the landing page of the data.
CSV
The ZIP file contains the navigation in XLSX and CSV formats, along with the FGDC CSDGM metadata.
1
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-074-FA/data/navigation/2015-074-FA_nav.zip
https://cmgds.marine.usgs.gov/data/field-activity-data/2015-074-FA/
https://doi.org/10.5066/P9XPFQ63
The first link is to download the data in a ZIP file. The second and third links, the latter of which is the DOI designation of the publication, both go to the landing page of the data.
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.
20210315
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
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998