Text files of the navigation logged with HYPACK Software during field activity 2012-024-FA in 2012 by the U.S. Geological Survey in the Connecticut River

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2017
Title:
Text files of the navigation logged with HYPACK Software during field activity 2012-024-FA in 2012 by the U.S. Geological Survey in the Connecticut River
Edition: 1.0
Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7PG1Q7V
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/10.5066/F7PG1Q7V
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Seth D. Ackerman
Originator: David S. Foster
Originator: Eric M. Moore
Originator: Barry J. Irwin
Originator: Dann S. Blackwood
Originator: Christopher R. Sherwood
Publication_Date: 2017
Title:
High-Resolution Geophysical and Sampling Data Collected at the Mouth of the Connecticut River, Old Saybrook to Essex, Connecticut, 2012
Edition: 1.0
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/F7PG1Q7V
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Ackerman S.D., Foster D.S., Moore E.M., Irwin B.J., Blackwood D.S., and Sherwood, C.R., 2017, High-resolution geophysical and sampling data collected at the mouth of the Connecticut River, Old Saybrook to Essex, Connecticut, 2012: U.S. Geological Survey data release, https://doi.org/10.5066/F7PG1Q7V.
Online_Linkage: https://doi.org/10.5066/F7PG1Q7V
Description:
Abstract:
A geophysical and geological survey was conducted at the mouth of the Connecticut River from Old Saybrook to Essex, Connecticut, in September 2012. Approximately 230 linear kilometers of digital Chirp subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, riverbed photographs, and (or) video at 88 sites within the geophysical survey area. Sediment grab samples were collected at 72 of the 88 sampling sites, video was acquired at 68 sites, and photographs of the river bottom were taken at 38 sites. These survey data are used to characterize the riverbed by identifying sediment-texture and riverbed morphology. More information can be found on the web page for the Woods Hole Coastal and Marine Science Center field activity: https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-024-FA. Data collected during the 2012 survey can be obtained here: https://doi.org/10.5066/F7PG1Q7V.
Purpose:
These raw navigation data are provided as an archive of the navigation data files acquired during USGS survey 2012-024-FA in the Connecticut River. Survey 2012-024-FA was conducted aboard the R/V Rafael. HYPACK software (version 12.0.8.12) was used to log these data.
Supplemental_Information:
More information can be found on the WHCMSC Field Activity webpage: https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-024-FA. Data collected during the 2012 survey can be obtained here: https://doi.org/10.5066/F7PG1Q7V.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20120915
Ending_Date: 20120921
Currentness_Reference:
ground condition of survey dates: 20120915-20120921; no geophysical data were collected on 20120918; see Completeness_Report for more information
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -72.4150717
East_Bounding_Coordinate: -72.3336450
North_Bounding_Coordinate: 41.3893800
South_Bounding_Coordinate: 41.2397050
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:a861bcaf-8d12-42d9-afe4-13ede1d9a986
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: seafloor
Theme_Keyword: sea floor
Theme_Keyword: Marine Geology
Theme_Keyword: field activity 2012-024-FA
Theme_Keyword: field activity number 12024
Theme_Keyword: navigation
Theme_Keyword: nav
Theme_Keyword: Real-time Kinematic
Theme_Keyword: RTK-GPS
Theme_Keyword: Coda Octopus F180
Theme_Keyword: Novatel DL-V3
Theme_Keyword: survey line
Theme_Keyword: Differential GPS
Theme_Keyword: DGPS
Theme_Keyword: Hemisphere DGPS
Theme_Keyword: fathometer
Theme_Keyword: tide
Theme_Keyword: HYPACK
Theme_Keyword: R/V Rafael
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geophysics
Theme_Keyword: marine geology
Theme_Keyword: navigational data
Theme_Keyword: bathymetry
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: Global Positioning System (GPS) observations
Theme_Keyword: estuary
Theme_Keyword: river
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: elevation
Theme_Keyword: location
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: Connecticut
Place_Keyword: Connecticut River
Place_Keyword: Long Island Sound
Place_Keyword: Old Saybrook
Place_Keyword: Essex
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2012
Access_Constraints: None
Use_Constraints:
These data are NOT to be used for navigation. Mariners should refer to the appropriate nautical chart. 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 originator of the dataset.
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
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
In the header of each HYPACK file, DEV3 is erroneously labeled as "F190" however the system used was really the Coda F180 RTK-GPS. The EC1 messages (DEV1) represents "dummy" data and should not be used.
Logical_Consistency_Report:
These are the original files recorded by the HYPACK navigation software. These data were checked but no modifications or corrections have been made to these files. File name convention is LLL_TTTT.DDD, where LLL is the user defined planned HYPACK line number, TTTT is the 24-hour time for the beginning of the file, and DDD is the Julian day (JD).
Completeness_Report:
These files represent all the navigation recorded by the HYPACK software during the geophysical portion of USGS survey 2012-024-FA in the Connecticut River. HYPACK files from September 15 (JD259) were recorded during equipment calibration testing (SWATHPlus patch test and L1F1) which were located in Long Island Sound, just outside of the mouth of the Connecticut River. L160F1 and L160F2 were transit lines to the dock on the final day of surveying. Time gaps occurred during this field activity where no surveying was done due to bad weather, rough seas and stops in surveying for equipment issues. No sonar data were collected on Tuesday 20120918.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Real-Time Kinematic Global Positioning System (RTK-GPS) and Differential GPS (DGPS) navigation data were collected during survey 2012-024-FA using the Coda F180 RTK-GPS, Novatel DL-V3 RTK-GPS and the Hemisphere DGPS. Positioning data from all these sensors were logged using HYPACK navigation software version 12.0.8.12 (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 and vertical positional information was necessary. The DGPS horizontal positional accuracy is estimated to be within 3-5 m and the accuracy of RTK-GPS is estimated to be less than 1 m. The antenna for the RTK-GPS was located on the same pole that the SWATHplus-M sonar was mounted (on the ship's bow). The antenna for the DGPS was mounted on the aft of the R/V Rafael's cabin just port of the centerline.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Real-Time Kinematic GPS height data (referenced to the WGS 84 ellipsoid) were recorded using navigation software from HYPACK, Inc. (www.hypack.com). Vertical accuracy of RTK-GPS is estimated to be less than 1 m.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: Unpublished Material
Title: raw HYPACK data
Geospatial_Data_Presentation_Form: text digital data
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20120915
Ending_Date: 20120921
Source_Currentness_Reference:
ground condition of survey dates: 20120915-20120921; no sonar data were collected on 20120918; see Completeness_Report for more information
Source_Citation_Abbreviation: raw HYPACK navigation
Source_Contribution:
Raw navigation data were saved in HYPACK format (www.hypack.com). File name convention is LLL_TTTT.DDD, where LLL is the user defined planned HYPACK line number, TTTT is the 24-hour time for the beginning of the file, and DDD is the Julian day (JD). Times were recorded in UTC (Coordinate Universal Time). During survey 2012-024-FA, HYPACK version 12.0.8.12 was used. The antenna for the RTK-GPS was located on the same pole that the SWATHplus-M sonar was mounted (on the ship's bow). The antenna for the DGPS was mounted on the aft of the R/V Rafael's cabin just port of the centerline.
Process_Step:
Process_Description:
Raw HYPACK navigation files were transferred from the navigation acquisition computer to a centralized data server on the survey vessel for accessibility and archival. The filenames are in the format of linenumber_starttime.julianday. For example, filename 015_1239.260 represents planned survey HYPACK line number 015, start time 1239 and Julian Day 260. Times are recorded in UTC (Coordinate Universal Time).
Process_Date: 2012
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:
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:
Not all files contain the same HYPACK strings, but this list represents all the HYPACK strings represented in the files. These are the original files, no corrections have been made to these files. The times recorded in the navigation file are in UTC. The EC1 messages, although present in many of the HYPACK files, are not verified. Keywords and the information they provide are as follows:
FTP: The first record located at the top of the header used to identify the file format.
VER: HYPACK version number.
INF: General survey information filled in by the data technician. This typically contains the vessel name, agencies involved with the survey, and the location of the survey.
ELL: Ellipsoid information. The name of the ellipsoid followed by the semi-major axis in meters and the flattening ratio.
PRO: Project information record where TME indicates Transverse Mercator and the central meridian of -75 indicates UTM, zone 18N.
DTM: Datum transformation record.
GEO: Geoid model. Blank if not present. Note: During survey 2012-024-FA, GEOID09 grid #4 for CONUS (g2009u4.geo) was used.
HVU: Horizontal and Vertical Units (meters).
TND: Survey time and date in UTC.
DEV [#]: [Insert data about cruise device #]
DEV 0: For survey 2012-024-FA: Indicates that lines collected with device designation 0 are lines of Differential Global Positioning System (DGPS) collected with the Hemisphere DGPS.
DEV 1: No usable lines of data from Device 1 occur in these HYPACK navigation files. This device is labeled as "bathy" however this is a dummy echosounder value and does not represent valid, corrected or verified data. See EC1 and SDDPT note below.
DEV 2: For survey 2012-024-FA: Indicates that lines collected with device designation 2 are lines of Real Time Kinematic GPS data collected from the Novatel Dl-V3.
DEV 3: For survey 2012-024-FA: Indicates that lines collected with device designation 3 are the NMEA string GPGGA lines of Real Time Kinematic GPS data collected from the Coda F180. ***Note: this is mislabeled in the header as "F190".***
OFF: Device Offsets in the format: OFF dn n1 n2 n3 n4 n5 n6 n7, where dn = device number; n1 = starboard or port offset (positive starboard); n2 = forward or aft offset (positive forward); n3 = height (antenna) or depth (transducer draft) offset; n4 = yaw rotation angle (positive for clockwise rotation); n5 = roll rotation angle (port side up is positive); n6 = pitch rotation angle (bow up is positive); n7 = device latency in seconds.
DDT: identifies the device that the computer clock is being synchronized to.
LIN 2: planned line data follows.
PTS: planned line waypoints (easting and northing, UTM, zone 18N, meters).
LBP: planned line begin point (easting and northing, UTM, zone 18N, meters).
LNN: planned line name.
USR: user information.
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 [Device 0] and 1 for [Device 1]) 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 18N, WGS84.
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 0 = fix not available or invalid; 1 = GPS fix; 2 = Differential GPS fix; 3 = GPS PPS Mode fix; 4 = RTK fix; and 5 = RTK Float. The last 3 values are decoded from GST message: standard deviation of latitude error (meters); standard deviation of longitude error (meters); Standard deviation of semi-major axis of error ellipsis (meters).
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 in the format ddmmmm.mmmm. To convert to ddmm.mmmmm multiply by 100; long=raw longitude in the format ddmmmm.mmmm. To convert to ddmm.mmmmm multiply by 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 survey 2012-024-FA there were several different messages were sent from the GPS systems: $GPGGA, $GPRMC, $GPZDA and $GPVTG were standard throughout the survey. These message strings will be defined below.
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. Note: this message appears to be invalid throughout this survey as this was a dummy depth feed possibly used to plot survey history in the HYPACK real-time display.
GYR: Gyro data (heading) in the format: GYR dn t h, where dn=device number, t=time tag (seconds past midnight), h=heading.
HCP: Heave Compensation in the format: HCP dn t h r p, where dn=device number, t=time tag (seconds past midnight), h=heave in meters, r=roll in degrees (+ port side up), p=pitch in degrees (+ bow up).
FIX: events marked manually by the user in the format: FIX dn t event_number, where dn=device number (typically 99 as there is no device for manual events); t=time tag (seconds past midnight); event_number=event number such as 1,2,3,4.
KTC: Describes how HYPACK records water levels (tide corrections) when using RTK in the format: KTC dn t nv eh lh u kval offset draft final, where dn = device number, t=time tag (seconds past midnight, matches GPS position), nv=number of values, eh= WGS84ellipsoidal height (from GPS), lh= local ellipsoidal height (on local ellipsoid), u=undulation, kval= K value, offset= antenna offset, draft=draft correction, final=final tide.
$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,123946.00,4117.1324,N,07220.9706,W,4,08,0.9,3.62,M,-31.40,M,01,0019*5C UTC Time = 123946.00 Latitude Deg = 41 Latitude Min = 17.1324 N Longitude Deg = 072 Longitude Min = 20.9706 W Fix Quality = 4 (indicates RTK) Number of satellites = 08 HDOP = 0.9 relative accuracy of horizontal position Altitude = 3.62 meters above mean sea level Height of geoid above WGS84 ellipsoid = -31.40 meters Time since last update = 01 Checksum = 0019*5C.
$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,177.258,T,,M,4.801,N,8.891,K,D*03 True course made good: 340.39 Magnetic course made good: 177.258 Ground speed (knots) = 4.801 Ground speed (kilometers) = 8.891 Mode=Differential.
$GPRMC is the recommended minimum specific GPS/TRANSIT data in the format "$GPRMC, hhmmss.ss, A, llll.ll, a, yyyyy.yy, a,x.x, x.x, ddmmyy, x.x, a, m*hh" where hhmmss.ss=UTC time fix, A=data staus (A=valid position, V=navigation receiver warning), llll.ll=latitude in the format ddmm.mmm, a=North/South, yyyyy.yy=longitude in the format dddmm.mmm, a=East/West, x.x=speed over ground in knots, x.x=track angle in degrees true, ddmmyy=UTC date of fix, x.x=magnetic variation degrees (Easterly variation subtracts from true course), a= E or W of magnetic variation, m= mode indicate (A=autonomous, D=Differential, E=Estimate, N=Data not valid), *hh=checksum.
Example: $GPRMC,123952.00,A,4117.124897,N,07220.969238,W,4.801,177.258,160912,,,D*43 UTC time = 123952.00 Navigation receiver warning = A Latitude 41 deg. 17.124897 min North Longitude 072 deg. 20.969238 min West Speed over ground = 4.801 (kts) Course Made Good = 177.258 (deg True) Date of fix = 160912 (DDMMYY) mandatory checksum = D*43
$GPZDA is UTC Date/Time and Local Time Zone Offset in the format "$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,123952.000,16,09,2012,,*57 UTC= 123952.00 UTC day = 16 UTC month = 09 UTM year = 2012 Local zone hours = null Local zone minutes = null Checksum = *57
$SDDPT is water depth relative to the transducer in meters in the format "$SDDPT, data_meters, offset_meters, checksum. Note: This data string only appears associated with DEV1 which was a dummy device labeled "Bathy" - data from this device is not valid, not corrected, and not verified.
Example: $SDDPT,4.78,0.49*51
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, http://www.nps.gov/gis/gps/NMEA_sentences.html, https://bitbucket.org/ccomjhc/hyo_base/downloads/Hypack_data_formats_revJan2013.pdf.
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:
USGS data release 2012-024-FA contains raw HYPACK navigation files collected in the Connecticut River (2012-024-FA_HYPACK.zip). The zip file contains 183 raw HYPACK files that serve as a navigation archive and Federal Geographic Data Committee (FGDC) Content Standards for Digital Geospatial Metadata (CSDGM) metadata files (2012-024-FA_HYPACK.xml) in standard formats.
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: HYPACK
Format_Version_Number: HYPACK (version 12.0.8.12)
Format_Specification: Text file
Format_Information_Content:
ASCII text files containing RAW HYPACK data. This zip file also includes associated metadata.
File_Decompression_Technique:
Use 7zip, WinZip, Peazip, pkUnzip, Keka or other uncompressing software
Transfer_Size: 21
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link is a direct link to download the zipped file of the backscatter imagery and metadata. The second and third links will both take you to the field activity data page containing all of the available data from this survey including this dataset.
Fees: none
Technical_Prerequisites:
These data are available as ASCII text files. To utilize these data, the user must have software capable of unzipping the zip file, viewing text files and parsing the HYPACK navigation strings.
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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