Text files of the navigation logged with HYPACK Software during surveys 06012 and 07001 conducted by the U.S. Geological Survey offshore of Massachusetts between Duxbury and Hull (DH_HYPACK_NAV)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2010
Title:
Text files of the navigation logged with HYPACK Software during surveys 06012 and 07001 conducted by the U.S. Geological Survey offshore of Massachusetts between Duxbury and Hull (DH_HYPACK_NAV)
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2009-1072
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://doi.org/10.3133/ofr20091072
Online_Linkage: Online_Linkage: https://pubs.usgs.gov/of/2009/1072/html/appendix1.html
Larger_Work_Citation:
Citation_Information:
Originator: Walter A. Barnhardt
Originator: Seth D. Ackerman
Originator: Brian D. Andrews
Originator: Wayne E. Baldwin
Publication_Date: 2010
Title:
Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts.
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2009-1072
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2009/1072/
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, Woods Hole Science Center (WHSC). Initiated in 2003, the primary objective of this program 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 impacts. The project is focused on the inshore waters (5-30 m deep) of Massachusetts between the New Hampshire border and Cape Cod Bay. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (https://woodshole.er.usgs.gov/project-pages/coastal_mass/). This spatial dataset is from the study area located between Duxbury and Hull Massachusetts, and consists of high-resolution geophysics (bathymetry, backscatter intensity, and seismic reflection) and ground validation (sediment samples, video tracklines and bottom photographs). The data were collected during four separate surveys conducted between 2003 and 2007 (NOAA survey H10993 in 2003, USGS-WHSC survey 06012 in 2006, and USGS-WHSC surveys 07001 and 07003 in 2007) and cover more than 200 square kilometers of the inner continental shelf.
Purpose:
To provide all of the navigation data files acquired during USGS surveys 06012 and 07001 offshore of Massachusetts, between Duxbury and Hull. Survey 06012 was conducted aboard the R/V Megan Miller August 4-20, 2006 and survey 07001 was conducted aboard the R/V Rafael April 22 - May 2, 2007. HYPACK software was used to log these navigation data.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20060804
Ending_Date: 20070502
Currentness_Reference:
ground condition of two separate surveys. The dates for the surveys were 20060804 to 20060820 and 20070422 to 20070502.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.828007
East_Bounding_Coordinate: -70.404034
North_Bounding_Coordinate: 42.340049
South_Bounding_Coordinate: 41.935706
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:847228d7-cc1c-43a0-a031-61cf8d22b57c
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: navigation
Theme_Keyword: Ashtech Z-Surveyor Extreme
Theme_Keyword: Ashtech BR2G
Theme_Keyword: Real-time Kinematic
Theme_Keyword: RTK-GPS
Theme_Keyword: Differential GPS
Theme_Keyword: DGPS
Theme_Keyword: fathometer
Theme_Keyword: HYPACK
Theme_Keyword: WHSC field activity serial number 06012
Theme_Keyword: WHSC field activity serial number 07001
Theme_Keyword: R/V Megan T. Miller
Theme_Keyword: R/V Rafael
Theme_Keyword: Open-File Report 2009-1072
Theme_Keyword: OFR 2009-1072
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: location
Theme_Keyword: oceans
Theme_Keyword: elevation
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: navigational data
Theme_Keyword: marine geophysics
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: Massachusetts
Place_Keyword: Boston South Shore
Place_Keyword: Massachusetts Bay
Place_Keyword: Cape Cod Bay
Place_Keyword: Buzzards Bay
Place_Keyword: Cape Cod Canal
Place_Keyword: Nantasket Beach
Place_Keyword: Hull Bay
Place_Keyword: Scituate
Place_Keyword: Marshfield
Place_Keyword: Brant Rock
Place_Keyword: Duxbury Beach
Place_Keyword: Duxbury Bay
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
Data_Quality_Information:
Logical_Consistency_Report:
These are the original files recorded by the HYPACK navigation software. No additional checks or corrections have been made to these files. Surveying may not have occurred on consecutive days.
Completeness_Report:
These files represent all the navigation recorded by the HYPACK software during USGS surveys 06012 and 07001
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Real-Time Kinematic (RTK) data were collected for both surveys using an Ashtech Z-Extreme receiver and were processed and recorded using navigation software from HYPACK, Inc (http://www.hypack.com). These data were incorporated into the geophysical data during acquisition and logged to these HYPACK files in the event that post-processing the horizontal positional information was necessary. RTK provides accuracies on the order of 10s of centimeters (http://www.navcen.uscg.gov/).
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Real-Time Kinematic (RTK) data were collected for both surveys using an Ashtech Z-Extreme receiver and were processed and recorded using navigation software from HYPACK, Inc (http://www.hypack.com). These data were incorporated into the geophysical data during acquisition and logged to these HYPACK files for post-processing the RTK navigation to provide improved vertical accuracy for the swath bathymetric data during post-cruise processing. RTK provides accuracies on the order of 10s of centimeters (http://www.navcen.uscg.gov/).
Lineage:
Process_Step:
Process_Description:
Real-Time Kinematic (RTK) navigation data were collected using an Ashtech Z-Extreme receiver. An RTK antenna was positioned between the forward and aft Differential Global Positioning System (DGPS) antennas used by the Coda Octopus F180R motion reference unit (MRU) for position and heading. The three antennas are mounted on a rigid horizontal pole that is 6.76 meters directly above the MRU and swath bathymetric transducers; an integral part of the sidemount used to deploy the swath bathymetric system from the starboard side of the R/V Megan Miller. The RTK antenna location was defined within HYPACK.
Raw navigation data were saved in HYPACK format (http://www.hypack.com). File name convention is LLL_TTTT.DDD, where LLL is the HYPACK line number, TTTT is the 24 hour time for the beginning of the file, and DDD is the Julian day. Times were recorded in UTC (Coordinate Universal Time).
The GPS navigation was significantly hindered by interference during the first leg of survey 06012 (lines l1f1 - l99f2, 4-14 Aug 2006). Frequent navigation dropouts halted data collection for extended periods during the survey.
Process_Date: unknown
Process_Step:
Process_Description:
During survey 06012: Raw HYPACK navigation files were transferred from the navigation acquisition computer to a Macintosh RAID server for accessibility and archival. During survey 07001: Raw HYPACK navigation files were stored to an external hard-drive on the acquisition vessel and transferred at the end of each survey day to the Macintosh RAID server at the satellite processing office.
The raw HYPACK navigation files are stored in separate directories indicating the acquisition Julian Day. The filenames in each folder are in the format of linenumber_starttime.julianday. For example, filename 014_1444.113 represents HYPACK line number 014, start time 1444 and Julian Day 113. Times are recorded in UTC (Coordinate Universal Time). Processing occurred in 200608 and 200705.
Process_Date: 200705
Source_Produced_Citation_Abbreviation: HYPACK navigation files
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Science party of surveys 06012 and 07001
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologists
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
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:
Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Attempted to modify http to https where appropriate. Fixed a link to the project page in the abstract. Fixed the date format in the time period of content and a process step. Moved the minimal source information provided to the first process step. Added an online link to the data zip file in the distribution section. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
Process_Date: 20170201
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description: USGS Thesaurus keywords added to the keyword section.
Process_Date: 20180720
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description: Crossref DOI link was added as the first link in the metadata.
Process_Date: 20191118
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200908
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@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. Keywords and the information they provide are as follows:
INF: General survey information filled in by the data technician. This typically contains the survey participants, the vessel name, other agencies involved with the survey, and the location of the survey.
FIL: Raw format file.
ELL: Ellipsoid information. The name of the ellipsoid followed by the semi-major axis in meters and the flattening ration.
PRO: Project information record where TME indicates Transverse Mercator and the central meridian of -69 indicates UTM, zone 19.
DTM: Datum transformation record
GEO: Geoid model. Blank if not present.
HVU: Horizontal and Vertical Units (meters)
TND: Survey time and date in UTC.
DEV 0: For surveys 06012 and 07001: Indicates that lines collected with device designation 1 are using Ashtech Z-Extreme, capable of recording antenna elevations above a vertical datum (i.e. real-time kinematic, RTK).
OFF: device offsets
DEV 1: For surveys 06012 and 07001: Indicates that the lines with device designation 1 are lines of Ashtech DGPS data - which was disabled for parts of these surveys.
PRD: Private Device Data (multiple formats depending on the type of device generating the data).
DEV 2: For survey 06012-leg1: Indicates that the lines with device designation 2 are lines of the motion reference unit. For surveys 06012-leg2 and 07001: Indicates that the lines with device designation 2 are lines of the single-beam echosounder.
DEV 3: For survey 06012-leg1: Indicates that the lines with device designation 3 are lines of the single-beam echosounder.
LIN 2: planned line data follows
PTS: planned line waypoints (easting and northing, UTM, zone 19N, meters)
LBP: planned line begin point (easting and northing, UTM zone 19N, meters)
LNN: planned line name
EOL: end of planned line
EOH: end of header.
The remaining elements have similar information in the first 3 columns. The first column will indicate the data type, the second column will indicate the device that recorded the information (0 for Ashtech) and the third column is the time tag (seconds past midnight) that is also sometimes referred to as the latency. The remaining information on each line is specific to the data type. Not all data types were recorded in each HYPACK file.
POS: Position of the ship in the format "POS dn t x y" where dn=device number; t=time tag (seconds past midnight); x=easting; y=northing. On this cruise these values are in UTM, Zone 19, WGS84.
QUA: Position quality information in the format "QUA dn t n m h sat mode" where dn=device number; t=time tag (seconds past midnight); n=number of values to follow; m = 10 minus HDOP (horizontal dilution of precision); h=HDOP; sat=number of satellites; mode=GPS mode (NMEA 0183 standard values) where 2=Differential GPS fix.
RAW: Position information in the format "RAW dn t n lat long alt utc" where dn=device number; t=time tag (seconds past midnight); n=number of values to follow; lat=raw latitude X 100; long=raw longitude X 100; alt=antenna altitude above ellipsoid (meters); utc=GPS time in the format HHMM.
MSG: Message string in the format "MSG dn t message" where dn=device number; t=time tag (seconds past midnight); message is the message sent from the device. During surveys 06012 and 07001 there were several different messages were sent from the GPS systems: $GPGGA, $GPVTG, and $GPZDA (06012 also had $GPHDT and 06012-leg2 had $PASHR,POS and $PASHR,SAT). These will be defined later.
TID: Tide correction in the format "TID dn t dc" where dn=device number, t=time tag (seconds past midnight), dc = draft correction.
EC1: Echo sounding (singe frequency) in the format "EC1 dn t rd" where dn=device number, t=time tag (seconds past midnight), rd=raw depth.
GYR: Gyro data (heading) in the format "GYR dn t h" where dn=device number, t=time tag (seconds past midnight), h=heading.
FIX: Fix (event) mark in the format "FIX vn" where n=FIX format version number.
The (National Marine Electronics Association) NMEA strings $GPGGA, $GPVTG, $GPZDA, $GPHDT are stored in the HYPACK file. 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 (indicates RTK) 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.
$GPVTG is track made good and ground speed in the format "$GPVTG, true, T, mag, M, grsp1, N, grsp2, K, mode", where t=true course made good over ground in degrees, T= True, m=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
$GPZDA is UTC Date/Time and Local Time Zone Offset in the format "$GPZDA,hhmmss.ss,xx,xx,xxxx,xx,xx" where hhmmss.ss=UTC, xx=Day, 01 to 31, xx=month, 01 to 12, xxx=Year, xx=Local zone description, 00 to +/- 13 hours, xx=Local zone minutes description (same sign as hours), checksum.
Example: $GPZDA,173357.00,28,04,2007,,*69 UTC= 173357.00 UTC day = 28 UTC month = 04 UTM year = 2007 Local zone hours = null Local zone minutes = null Checksum = *69
$GPHDT is Actual vessel heading in degrees in format "$GPHDT,xxx.x,T" where xxx.x=heading in degrees and T indicates True Heading, checksum
Example: $GPHDT,005.533,T*35 Heading in Degrees = 5.533 True = T Checksum = *35
$PASHR,POS is Position information and $PASHR,SAT is GPS satellite tracking status information. Both are Ashtech proprietary format; no additional explanation could be found.
Entity_and_Attribute_Detail_Citation:
The definitions of the HYPACK strings were acquired from the HYPACK software manual available from: http://www.hypack.com/. 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: text file
Format_Specification: text files
Format_Information_Content: ASCII text files containing RAW HYPACK data
File_Decompression_Technique: Use WinZip or pkUnzip
Transfer_Size: 142
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: 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: 20200908
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

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