BBVS_Sampling_nav_files: Text files of the navigation logged with Microsoft HyperTerminal during sampling survey 2010-005-FA conducted aboard the R/V Connecticut by the U.S. Geological Survey offshore of Massachusetts in Buzzards Bay and Vineyard Sound in September 2010.

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 2014

Title:

BBVS_Sampling_nav_files: Text files of the navigation logged with Microsoft HyperTerminal during sampling survey 2010-005-FA conducted aboard the R/V Connecticut by the U.S. Geological Survey offshore of Massachusetts in Buzzards Bay and Vineyard Sound in September 2010.

Edition: 1.0

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2014-1221

Publication_Information:

Publication_Place:

Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage:

<https://pubs.usgs.gov/of/2014/1221/GIS/navigation/BBVS_Sampling_nav_files.zip>

Online_Linkage: <https://pubs.usgs.gov/of/2014/1221/html/appendix1.html>

Larger_Work_Citation:

Citation_Information:

Originator: Seth D. Ackerman

Originator: Adrienne L. Pappal

Originator: Emily C. Huntley

Originator: Dann S. Blackwood

Originator: William C. Schwab

Publication_Date: 2014

Title:

Geological Sampling Data and Benthic Biota Classification: Buzzards Bay and Vineyard Sound, Massachusetts

Edition: 1.0

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2014-1221

Publication_Information:

Publication_Place: Reston, Virginia

Publisher: U.S. Geological Survey

Online_Linkage: <https://pubs.usgs.gov/of/2014/1221/>

Description:

Abstract:

These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program. The primary objective of this program, initiated in 2003, is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of sea-floor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human effects. The project is focused on the inshore waters (5-30 meters deep) of Massachusetts. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>). This spatial dataset is from the study area located in Buzzards Bay and Vineyard Sound Massachusetts, and consists of ground-validation data which include the spatial extent of sea-floor sediment sample analyses, the location of sea-floor bottom photographs, and the tracklines along which sea-floor video was collected. These ground-validation (or ground-truth) data accompany a suite of high-resolution geophysical data, including swath bathymetry, sidescan-sonar backscatter intensity, and seismic-reflection data that were released in USGS Open File Reports 2012-1002 and 2012-1006. The sea-floor sampling data were collected during USGS survey 2010-005-FA in 2010 and cover more than 750 square kilometers of the inner continental shelf where the geophysical data were collected in 2009 and 2010.

Purpose:

This dataset provides the raw navigation files acquired during USGS survey 2010-005-FA offshore of Massachusetts in Buzzards Bay and Vineyard Sound. Survey 2010-005-FA was conducted aboard the R/V Connecticut September 9-14, 2010. A Microsoft HyperTerminal session on a Dell Latitude D820 laptop computer was used to log these raw Global Positioning System (GPS) navigation data.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100909

Ending_Date: 20100914

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -71.0971600

East_Bounding_Coordinate: -70.4568533

North_Bounding_Coordinate: 41.6498300

South_Bounding_Coordinate: 41.2667683

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: WHCMSC

Theme_Keyword: Woods Hole Coastal and Marine Science Center

Theme_Keyword: WHCMSC

Theme_Keyword: navigation

Theme_Keyword: Ashtech BR2G

Theme_Keyword: Differential GPS

Theme_Keyword: DGPS

Theme_Keyword: WHCMSC field activity serial number 10005

Theme_Keyword: R/V Connecticut

Theme_Keyword: Open-File Report 2014-1221

Theme_Keyword: OFR 2014-1221

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: oceans and estuaries

Theme_Keyword: oceans and coastal

Theme_Keyword: location

Theme_Keyword: oceans

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: North America

Place_Keyword: United States

Place_Keyword: Atlantic Ocean

Place_Keyword: Massachusetts

Place_Keyword: Buzzards Bay

Place_Keyword: Vineyard Sound

Place_Keyword: Martha's Vineyard

Place_Keyword: New Bedford

Place_Keyword: Woods Hole

Place_Keyword: Cape Cod

Place_Keyword: Falmouth

Place_Keyword: West Falmouth

Place_Keyword: Cleveland Ledge

Place_Keyword: Elizabeth Islands

Temporal:

Temporal_Keyword_Thesaurus: General

Temporal_Keyword: 2010

Access_Constraints: None

Use_Constraints:

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 source of this information.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Seth Ackerman

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: sackerman@usgs.gov

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850

Cross_Reference:

Citation_Information:

Originator: Seth D. Ackerman

Originator: Brian D. Andrews

Originator: David S. Foster

Originator: Wayne E. Baldwin

Originator: William C. Schwab

Publication_Date: 2013

Title:

High-resolution geophysical data from the inner continental shelf - Buzzards Bay, Massachusetts

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2012-1002

Publication_Information:

Publication_Place: Reston, VA

Publisher: U.S. Geological Survey

Online_Linkage: <https://pubs.usgs.gov/of/2012/1002/>

Cross_Reference:

Citation_Information:

Originator: Brian D. Andrews

Originator: Seth D. Ackerman

Originator: Wayne E. Baldwin

Originator: David S. Foster

Originator: William C. Schwab

Publication_Date: 2013

Title:

High-Resolution geophysical data from the inner continental shelf at Vineyard Sound, Massachusetts

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2012-1006

Publication_Information:

Publication_Place: Reston, VA

Publisher: U.S. Geological Survey

Online_Linkage: <https://pubs.usgs.gov/of/2012/1006/>

Data_Quality_Information:

Logical_Consistency_Report:

The original files recorded by a Microsoft HyperTerminal session were logged roughly by Julian day. The original files were split and combined to create an individual file for each Julian day of surveying (starting at time 000000, ending at 235959). These files include navigation data during the transits en-route to, returning from, and between the sampling sites. In general, the navigation feed was continuous, even during breaks in the sampling survey, although some gaps in the navigation data may occur during the transit times. A quality check of these files revealed a total of one-hundred eleven records of garbled or null navigation data; these records were not removed or corrected. Additional records of well-formatted but erroneous navigation fixes may occur but were not checked, removed or corrected.

Completeness_Report:

These files represent all the navigation recorded by the Microsoft HyperTerminal session during USGS survey 2010-005-FA.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Navigation for survey 2010-005-FA used Differential Global Positioning System (DGPS). The recorded position of each navigation point is the position of the GPS antenna on the survey vessel, not the SEABOSS sampler. A conservative estimate the horizontal accuracy of the DGPS locations is 10 meters. The estimated horizontal accuracy of the sampling data is greater than 10 meters because no layback or offset was applied to the recorded position to account for the position of the SEABOSS sampler.

Lineage:

Source_Information:

Source_Contribution:

Differential Global Positioning System (DGPS) navigation from an Ashtech BR2G GPS unit was logged through a Microsoft HyperTerminal (version 5.1) session on a Dell Latitude D820 laptop computer running Windows XP, SP2 via serial cable. Log files were saved for each sampling watch then reformatted into log files by Julian day (e.g. JD252.txt) during post-processing.

Raw navigation data were saved in ASCII text format. Original navigation file name convention is JDXXX_A.txt, where JD is the Julian day, XXX is the numeric Julian day, and _A indicated that this is a temporary file. The reformatted log files are named JDXXX.txt. No editing was done in the reformatting, just a rearrangement of records into files organized by Julian day. However, included in the zip file of data is an AWK script (awkseth.gpgga10005.sda.awk) that can be used to extract the navigation from each log file into the following format: time, latitude (in decimal degrees), longitude (in decimal degrees), Julian day, source file.

Process_Step:

Process_Description:

The raw navigation feed from the Differential Global Positioning System (DGPS) receiver was logged at a one-second interval using Microsoft HyperTerminal on a Dell Latitude D820 laptop computer.

Process_Date: 201009

Source_Produced_Citation_Abbreviation: Original navigation files

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Seth Ackerman

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: sackerman@usgs.gov

Process_Step:

Process_Description:

The original log files were reformatted into log files by full Julian day (e.g. JD252.txt, JD253.txt, etc). No additional editing was done in this step, the navigation records were simply rearranged into files organized by Julian day.

Process_Date: 201009

Source_Produced_Citation_Abbreviation: Navigation files organized by Julian day

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Seth Ackerman

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: sackerman@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001

Longitude_Resolution: 0.000001

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984

Ellipsoid_Name: WGS_1984

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257224

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

The times recorded in the navigation file are in UTC. The National Marine Electronics Association (NMEA) strings $GPGGA and $GPVTG are stored in these navigation files. These are defined as follows:

$GPGGA is GPS fix data in the format "$GPGGA, t, lat, lath, long, longh, q, sat, h, a, M, alt, M, t2, refcheck" where t=time in UTC in the format hhmmss.ss; lat=latitude in the format ddmm.mmmmmm; lath= N or S indicating the latitude hemisphere; long=longitude in the format dddmm.mmmmmm; longh=E or W indicating the hemisphere; q=fix quality where 0=fix not available or invalid, 1=GPS fix, 2=Differential GPS fix, 3=GPS PPS Mode fix, 4=RTK fix, 5=RTK float; sat=number of satellites; h=Horizontal Dilution of Precision (HDOP); a=Antenna altitude above mean sea level (geoid); M= units of antenna altitude in meters; alt=height of geoid above WGS84 ellipsoid; M=units of geoidal height in meters; t2=time since last DGPS update; refcheck=DGPS reference station id and the checksum.

Example: $GPGGA,173356.00,4204.848996,N,07036.929067,W,4,09,01.1,00003.278,M,-028.888,M,01,0000*56 UTC Time = 173356 Latitude = 4204.848996 N Longitude = 7036.929067 W Fix Quality = 4 Number of satellites = 9 HDOP = 01.1 relative accuracy of horizontal position Altitude = 3.278 meters above mean sea level Height of geoid above WGS84 ellipsoid = -28.888 meters Time since last update = 01 Checksum = *57.

$GPVTG is track made good and ground speed in the format "$GPCTG, true, T, mag, M, grsp1, N, grsp2, K, mode", where true=true course made good over ground in degrees, T= True, mag=magnetic course made good over ground in degrees, M=magnetic, grsp1=ground speed, N=Knots, grsp2=ground speed, K=Kilometers per hour, mode=Mode indicator (A=Autonomous, D=Differential, E=Estimated, N=Data not valid).

Example: $GPVTG,340.39,T,356.37,M,005.50,N,010.18,K,D*27 True course made good: 340.39 Magnetic course made good: 356.37 Ground speed (knots) = 5.5 Ground speed (kilometers) = 10.18 Mode=Differential

Entity_and_Attribute_Detail_Citation:

The definitions of the NMEA strings were obtained from: <http://home.mira.net/~gnb/gps/nmea.html> and <http://www.nps.gov/gis/gps/NMEA_sentences.html>

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Seth Ackerman

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: sackerman@usgs.gov

Resource_Description: Downloadable Data

Distribution_Liability:

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.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ASCII

Format_Version_Number: zip file

Format_Specification: Zip file of text files

Format_Information_Content:

ASCII text files containing RAW navigation data and an AWK script (awkseth.gpgga10005.sda.awk) that can be used to extract the navigation from each log file into the following format: time, latitude (in decimal degrees), longitude (in decimal degrees), Julian day, source file.

File_Decompression_Technique: zip archive

Transfer_Size: 10.739 Mb

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<https://pubs.usgs.gov/of/2014/1221/GIS/navigation/BBVS_Sampling_nav_files.zip>

Access_Instructions: Data can be downloaded via the World Wide Web (WWW)

Offline_Option:

Offline_Media: DVD-ROM

Recording_Capacity:

Recording_Density: 4.75

Recording_Density_Units: Gbytes

Recording_Format: UDF

Fees: none

Technical_Prerequisites:

These data are available as a ASCII text files. To utilize these data, the user must have software capable of viewing text files.

Metadata_Reference_Information:

Metadata_Date: 201309

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Seth Ackerman

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2315

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: sackerman@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com>

Profile_Name: ESRI Metadata Profile