l782sp.m77t - MGD77 data file for Geophysical data from field activity L-7-82-SP in Solomon Islands from 05/19/1982 to 06/11/1982

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Frequently anticipated questions:


What does this data set describe?

Title:
l782sp.m77t - MGD77 data file for Geophysical data from field activity L-7-82-SP in Solomon Islands from 05/19/1982 to 06/11/1982
Abstract:
Single-beam bathymetry, gravity, and magnetic data along with transit satellite navigation data was collected as part of field activity L-7-82-SP in Solomon Islands from 05/19/1982 to 06/11/1982,http://walrus.wr.usgs.gov/infobank/l/l782sp/html/l-7-82-sp.meta.html
These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/l/l782sp/html/l-7-82-sp.bath.html http://walrus.wr.usgs.gov/infobank/l/l782sp/html/l-7-82-sp.grav.html and http://walrus.wr.usgs.gov/infobank/l/l782sp/html/l-7-82-sp.mag.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.
Supplemental_Information:
The navigation data are digitally collected using a Satellite Integrated Navigation (SINS) system. The system is a space-based satellite navigation maintained by the United States government and is accessible using a satellite receiver. This system provides navigational accuracy of approximately 200 m.The Data Acquistion, Processing, and Storage (DAPS) group performs a number of processing steps to the navigation data once it is collected which can vary by cruise. These steps are outlined within the header information in each individual digital navigation (.05x) space-delimited ASCII data file. The header information rows are indicated by lines beginning with the character "!". There is no information on how the single-beam bathymetry, gravity, and magnetic data were collected. For each data gathering cruise leg, the available data in the following categories are forwarded to NGDC: navigation, gravity, magnetics, bathymetry, and seismic shot points. The available data for each cruise leg are re-formatted and combined into the Marine Geophysical Data Exchange Format (MGD77) and into the internal NGDC SEIS-NAV format by USGS using several USGS developed FORTRAN programs.The FORTRAN programs sample the navigation to every integer minute of the cruise. When necessary, the latitudes and longitudes are linearly interpolated. If the time between the actual navigation fixes exceeds five minutes, no data are included in the MGD77 file.To build the MGD77 file, gravity, magnetics, and bathymetry are added to this sampled navigation. When necessary, gravity, magnetics, and bathymetry data are linearly interpolated if the time between the actual data samples does not exceed five minutes. If a time gap exceeds this, the data are not reported.The navigation data are merged with the seismic shot point data in a SEIS- NAV format file. For this file, navigation data are interpolated for each shot point. Both types of files are written to magnetic tape and sent to NGDC.
  1. How might this data set be cited?
    U.S. Geological Survey, and Coastal and Marine Geology Program, 2013, l782sp.m77t - MGD77 data file for Geophysical data from field activity L-7-82-SP in Solomon Islands from 05/19/1982 to 06/11/1982: U.S. Geological Survey, Menlo Park, CA.

    Online Links:

    This is part of the following larger work.

    Steele, Wm. Clinton, Degnan, Carolyn H., Deeter, Gary B., and Riordan, Jean A., 1980, DESCRIPTION OF MARINE GEOPHYSICAL DATA COLLECTED BY THE U.S. GEOLOGICAL SURVEY AND HOW TO OBTAIN IT: U.S. Geological Survey Open File Report 167, U.S. Geological Survey, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: 152.16299
    East_Bounding_Coordinate: 160.94296
    North_Bounding_Coordinate: -4.20052
    South_Bounding_Coordinate: -10.18645
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 19-May-1982
    Ending_Date: 11-Jun-1982
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: tab-delimited ASCII text files
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference: Solomon Islands
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.25722210100002.
  7. How does the data set describe geographic features?
    l782sp.m77t
    MGD77T single-beam bathymetry, gravity, and magnetics data file for l782sp (Source: NOAA's National Geophysical Data Center, See Hittelman and others (2010) Cross_Reference section above for details about the MGD77T format and citation information.)
    SURVEY_ID
    Survey identifier supplied by the contributing organization (Source: NGDC) This identifier varies in format and is supplied by the contributing organization
    TIMEZONE
    Time-zone correction (Source: NGDC) In our datasets, no correction was applied. All values equal 0.
    DATE
    YYYYMMDD (Source: NGDC)
    Range of values
    Minimum:19820519
    Maximum:19820611
    Units:Year, month, day
    TIME
    Time (Source: NGDC)
    Range of values
    Minimum:0
    Maximum:2359.883
    Units:hours and decimal minutes
    LAT
    Latitude (Source: World Geodetic System 1984 Geographic Coordinate System)
    Range of values
    Minimum:-10.18645
    Maximum:-4.20052
    Units:decimal degrees
    LON
    Longitude (Source: World Geodetic System 1984 Geographic Coordinate System)
    Range of values
    Minimum:152.16299
    Maximum:160.94296
    Units:decimal degrees
    POS_TYPE
    Indicates how lat/lon was obtained (Source: NGDC)
    Range of values
    Minimum:1
    Maximum:3
    Units:1 = observed fix, 3 = interpolated fix, nil = unspecified
    BAT_TTIME
    Bathymetry, 2-way travel time (Source: U.S. Geological Survey)
    Range of values
    Minimum:0.027
    Maximum:8.243
    Units:seconds
    CORR_DEPTH
    Bathymetry, corrected depth (Source: U.S. Geological Survey)
    Range of values
    Minimum:20.3
    Maximum:6251.3
    Units:decimal meters
    BAT_CPCO
    Bathymetric Correction code - details the procedure used for determining the sound velocity correction to depth (Source: NGDC)
    Range of values
    Minimum:63
    Maximum:63
    Units:01-55 Matthews' Zones with zone , 59 Matthews' Zones, no zone specified, 60 S. Kuwahara Formula, 61 Wilson Formula, 62 Del Grosso Formula, 63 Carter's Tables, 88 Other (see Add. Doc.), 97 Computed using 1500 meters/sec, 98 Unknown if Corrected, 99 Unspecified
    BAT_TYPCO
    Bathymetry type code - indicates how the bathymetric value was obtained (Source: NGDC)
    Range of values
    Minimum:1
    Maximum:3
    Units:1 - Observed, 3 - Interpolated (Header Seq. 12), 9 - Unspecified
    MAG_TOT
    Magnetics total field - 1st sensor (Source: NGDC)
    Range of values
    Minimum:40247
    Maximum:43256.4
    Units:gammas
    MAG_RES
    Magnetics residual field field (Source: NGDC)
    Range of values
    Minimum:-882.4
    Maximum:2706.5
    Units:gammas
    GRA_OBS
    Observed gravity (Source: NGDC)
    Range of values
    Minimum:977917.1
    Maximum:978329.3
    Units:milligals
    EOTVOS
    EOTVOS correction - E = 7.5 V cos(phi) * sin(alpha) + 0.0042 V*V (Source: NGDC)
    Range of values
    Minimum:-82.7
    Maximum:81.2
    Units:milligals
    FREEAIR
    Free-air Anomaly = G(observed) minus G(theoretical) (Source: NGDC)
    Range of values
    Minimum:-225
    Maximum:202.1
    Units:milligals
    LINEID
    LINE/TRACK/SEGMENT ID (Source: NGDC)
    Range of values
    Minimum:1
    Maximum:52
    Units:Used, for example, to cross reference with seismic data.
    POINTID
    SEISMIC SHOT-POINT NUMBER/POINT ID (Source: NGDC)
    Range of values
    Minimum:40
    Maximum:6120
    Units:Used, for example, to cross reference with seismic data.
    Entity_and_Attribute_Overview:
    Bathymetry, gravity, magnetic, and navigation data for U.S. Geological Survey survey l782sp in MGD77T format.
    Entity_and_Attribute_Detail_Citation:
    Attributes are obtained from MGD77T data files created from the navigation gravity, magnetic, and bathymetry best files. MGD77T is the standard, defined data format used for geophysical data in the National Geophysical Data Center. See Cross_Reference section above for citation details.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • U.S. Geological Survey
    • Coastal and Marine Geology Program
  2. Who also contributed to the data set?
    Don Tiffin (Chief Scientist)
  3. To whom should users address questions about the data?
    Gregory K. Miller
    U.S. Geological Survey
    Physical Scientist
    600 4th Street South
    St. Petersburg, FL
    USA

    (727) 803-8747, ext. 3020 (voice)
    gmiller@usgs.gov

Why was the data set created?

These data and information are intended for science researchers,students, policy makers, and general public. These data are not to be used for navigation purposes. The data are reformatted into MGD77T standard format for inclusion into NOAA's NGDC geophysical database. From there the data will be made available to GeoMapApp ( http://www.geomapapp.org/ ) and Virtual Ocean ( http://www.virtualocean.org/ ) Earth-browsing software. Access to the data is also provided via the USGS Coastal and Marine Geoscience Data System ( http://cmgds.marine.usgs.gov/ ).

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 19-Jan-1996 (process 1 of 6)
    Navigation Data >Converted to time format with year at start. > >06/05/85 KAYE USR$DISK:[DRS.DATA.L782SP.N]L782SP.053; >USR$DISK:[DRS.REFMT]REFORMAT.EXE;4 > Person who carried out this activity:
    U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG)
    Attn: Clint Steele
    InfoBank Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov
    Date: 31-Oct-1998 (process 2 of 6)
    Gravity Data >10/31/1998 /tiger/l/l782sp/grav/l-7-82-sp.151_053 >/bear/programs/edit/automerge/automerge > >Input was... >Converted to time format with year at start. > >08/06/85 BARB DRS$DATA:[L782SP.G]L782SP.151; >DRB0:[DRS.REFMT]REFORMAT.EXE;4 > >Input was... >Converted to time format with year at start. > >06/05/85 KAYE USR$DISK:[DRS.DATA.L782SP.N]L782SP.053; >USR$DISK:[DRS.REFMT]REFORMAT.EXE;4 > >time, lat, long, time(sec) to nearest nav fix, data values Person who carried out this activity:
    U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG)
    Attn: Clint Steele
    InfoBank Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov
    Date: 20-Jun-2012 (process 3 of 6)
    Magnetics Data >06/20/2012 carolyn l-7-82-sp.220_053 > >Reprocessed using subroutines from Susan Macmillan's >IGRF SYNTHESIS PROGRAM >with IGRF-11 coeffiecients integrated into the source code. >/infobank/programs/mag/magred11/magred11.for >Using geodetic coordinate system (Earth shape approximated by spheriod) >with altitude 0.0 km (for sea level). > >Input was... >10/31/1998 /tiger/l/l782sp/mag/l-7-82-sp.200_053 >/bear/programs/edit/automerge/automerge > >Converted to time format with year at start. > >12/05/85 CAROLYN DRS$DATA:[L782SP.M]L782SP.200; >DRB0:[DRS.REFMT]REFORMAT.EXE;4 >was L782SP._.MAGSB1 on TAM392 >was L782SP220.DAT on VAM392 > >Converted to time format with year at start. > >06/05/85 KAYE USR$DISK:[DRS.DATA.L782SP.N]L782SP.053; >USR$DISK:[DRS.REFMT]REFORMAT.EXE;4 > >time, lat, long, time(sec) to nearest nav fix, data values Person who carried out this activity:
    U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG)
    Attn: Clint Steele
    InfoBank Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov
    Date: 31-Oct-1998 (process 4 of 6)
    Bathymetry Data >10/31/1998 /tiger/l/l782sp/bath/l-7-82-sp.330_053 >/bear/programs/edit/automerge/automerge > >Input was... >Converted to time format with year at start. > >07/03/85 BECKIE DRS$DATA:[L782SP.B]L782SP.330; >DRB0:[DRS.REFMT]REFORMAT.EXE;4 >THIS FILE IS HAND-DIGETIZED BATHY IN 2-WAY TRAVELTIME(SECS). > >Input was... >Converted to time format with year at start. > >06/05/85 KAYE USR$DISK:[DRS.DATA.L782SP.N]L782SP.053; >USR$DISK:[DRS.REFMT]REFORMAT.EXE;4 > >time, lat, long, time(sec) to nearest nav fix, data values Person who carried out this activity:
    U.S. Geological Survey (USGS) , Coastal and Marine Geology (CMG)
    Attn: Clint Steele
    InfoBank Group Leader
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov
    Date: 20-Jun-2012 (process 5 of 6)
    MGD77 file creation - The available data for each cruise leg are re-formatted and combined into the Marine Geophysical Data Exchange Format (MGD77) and into the internal NGDC SEIS-NAV format by USGS using several USGS developed FORTRAN programs.The FORTRAN programs sample the navigation to every integer minute of the cruise. When necessary, the latitudes and longitudes are linearly interpolated. If the time between the actual navigation fixes exceeds five minutes, no data are included in the MGD77 file.To build the MGD77 file, gravity, magnetics, and bathymetry are added to this sampled navigation. When necessary, gravity, magnetics, and bathymetry data are linearly interpolated if the time between the actual data samples does not exceed five minutes. If a time gap exceeds this, the data are not reported.The navigation data are merged with the seismic shot point data in a SEIS- NAV format file. For this file, navigation data are interpolated for each shot point. Both types of files are written to magnetic tape and sent to NGDC. Person who carried out this activity:
    U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
    Attn: Carolyn H. Degnan
    Geophysicist
    USGS Pacific Coastal & Marine Science Center, 400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 460-7452 (voice)
    (831) 427-4748 (FAX)
    infobank@octopus.wr.usgs.gov
    Date: 01-Feb-2017 (process 6 of 6)
    Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
  3. What similar or related data should the user be aware of?
    Hittelman, Allen M., Groman, Robert C., Haworth, Richard T., Holcombe, Troy L., McHendrie, Graig, Smith, Stuart M., and Metzger, Dan R., 2010, The marine geophysical data exchange format - MGD77 / MGD77T: National Geophysical Data Center, National Oceanic and Atmospheric Administration, Boulder, CO.

    Online Links:

    Other_Citation_Details: 25 p.

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    The validity or accuracy of bathymetry and navigation data is highly qualitative and depends on equipment and operating condition variables. Data quality is unknown, MGD77T files were formatted from InfoBank files identified as best available version.
  2. How accurate are the geographic locations?
    Unspecified
  3. How accurate are the heights or depths?
    Unspecified
  4. Where are the gaps in the data? What is missing?
    Start and end date/times of data >Navigation Data (l-7-82-sp.053 [SINS]) >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >198205190546000 198205190546000 >198205190557000 198205221050000 >198205221056000 198205230238000 >198205230244000 198205252358000 >198205260016000 198205271618000 >198205271628000 198205301458000 >198205301514000 198206020448000 >198206020454000 198206031009000 >198206031015000 198206060613000 >198206060621000 198206081207000 >198206081217000 198206090053000 >198206090059000 198206090213000 >198206090219000 198206110331000 >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >Gravity Data (l-7-82-sp.151_053) >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >198205190621480 198205191342180 >198205191526180 198205200343180 >198205200444300 198205200647300 >198205200718300 198205201457240 >198205201520240 198205210453300 >198205210513360 198205212158420 >198205212207540 198205220418540 >198205220434540 198205220640540 >198205220647300 198205221906420 >198205221944420 198205230611240 >198205230633240 198205230738420 >198205230800000 198205230856420 >198205230906300 198205240012240 >198205240029240 198205240247240 >198205240305000 198205240542180 >198205240623180 198205251426540 >198205251441540 198205271239240 >198205271251240 198205280412240 >198205280603240 198205290006120 >198205290039300 198205290148300 >198205290211300 198205290225300 >198205290300060 198205300215300 >198205300227180 198205301406180 >198205301510180 198205301659180 >198205301709180 198205302008180 >198205302021480 198205310527360 >198205310603360 198205311710180 >198205311733180 198205312240180 >198205312250180 198205312350180 >198206010020180 198206011755000 >198206011844000 198206011952000 >198206012016000 198206012247000 >198206012315000 198206020034000 >198206020102000 198206020201000 >198206020520000 198206020556180 >198206020611180 198206020639180 >198206020700180 198206020923180 >198206020947180 198206021130180 >198206021231180 198206021427180 >198206021511180 198206021753180 >198206021914180 198206021936180 >198206021949180 198206022034180 >198206022117180 198206022254180 >198206022316180 198206022344180 >198206030539180 198206030620180 >198206030736180 198206031002180 >198206031031420 198206031311420 >198206031330420 198206031522420 >198206031637420 198206031655420 >198206031709420 198206031740420 >198206031800000 198206031837420 >198206031856420 198206040054420 >198206040108420 198206040227420 >198206040624420 198206040652420 >198206040717420 198206041929420 >198206042013420 198206050137240 >198206050313420 198206060828000 >198206060924000 198206061357060 >198206061416060 198206061657000 >198206061709000 198206070638420 >198206070711420 198206071340420 >198206071423420 198206071957300 >198206072016300 198206072030300 >198206072051300 198206072110300 >198206072129300 198206081130540 >198206081154540 198206081939180 >198206082003180 198206090428000 >198206090454420 198206090541420 >198206090650420 198206090913420 >198206090953420 198206091653420 >198206091712420 198206101348480 >198206101415000 198206101823000 >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >Magnetics Data (l-7-82-sp.220_053) >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >198205191121500 198205200349040 >198205200409250 198205210458400 >198205210518360 198205212204240 >198205212212560 198205220646240 >198205220652280 198205230902200 >198205230911280 198205240252560 >198205240310000 198205271006520 >198205271125040 198205290231160 >198205290305070 198205300220280 >198205300232160 198205302014000 >198205302026480 198205312246040 >198205312255160 198206011759560 >198206041928400 198206050145000 >198206050718030 198206051728520 >198206060051000 198206070500190 >198206070642190 198206081135560 >198206081159560 198206081729560 >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >Bathymetry Data (l-7-82-sp.330_053) >YYYYMMDDHHMMSST YYYYMMDDHHMMSST >198205190700000 198205200533480 >198205200545000 198205200545000 >198205200600060 198205200600060 >198205200615060 198205201930060 >198205201945060 198205201945060 >198205202000060 198205202030120 >198205202044300 198205202044300 >198205202054360 198205211001120 >198205211013480 198205211211540 >198205211222300 198205211505480 >198205211515540 198205211537180 >198205211804180 198205211812480 >198205211832480 198205212129480 >198205212200180 198205220900000 >198205220910120 198205220919120 >198205220930060 198205221319420 >198205221330000 198205221339000 >198205221351360 198205221441480 >198205221452000 198205221816480 >198205221830060 198205221839300 >198205221851060 198205221900000 >198205221914000 198205221914000 >198205221928000 198205221952180 >198205222015060 198205222300000 >198205222315000 198205222315000 >198205222327540 198205230300000 >198205230345180 198205230345180 >198205230400000 198205230400000 >198205230416000 198205230416000 >198205230429540 198205230500540 >198205230514360 198205230514360 >198205230529360 198205230529360 >198205230541360 198205230730180 >198205230740540 198205230742240 >198205230753420 198205230901480 >198205230915060 198205231009000 >198205231201000 198205231300060 >198205231315060 198205231315060 >198205231330000 198205231345060 >198205231400060 198205231400060 >198205231415120 198205231415120 >198205231430000 198205231504060 >198205231514540 198205231514540 >198205231529540 198205231529540 >198205231544540 198205231546480 >198205231600000 198205231600000 >198205231615060 198205231635000 >198205231646180 198205231646180 >198205231715000 198205231715000 >198205231745060 198205231745060 >198205231809240 198205231809240 >198205231842420 198205231842420 >198205231858480 198205231858480 >198205231911360 198205231929540 >198205231945060 198205231945060 >198205231956060 198205232130360 >198205232142060 198205232142060 >198205232157120 198205251017000 >198205251030000 198205251054300 >198205251129300 198205251129300 >198205251144540 198205251144540 >198205251201240 198205251201240 >198205251216240 198205251216240 >198205251245060 198205251245060 >198205251300240 198205251300240 >198205251315000 198205251315000 >198205251334540 198205251334540 >198205251355120 198205252132480 >198205252143240 198205252349180 >198205260000180 198205260000180 >198205260015060 198205260015060 >198205260100060 198205260100060 >198205260200000 198205260200000 >198205260259120 198205260259120 >198205260344420 198205260344420 >198205260400000 198205260400000 >198205260417180 198205260417180 >198205260429540 198205260429540 >198205260440120 198205260440120 >198205260450240 198205261017480 >198205261028180 198205261045120 >198205261100000 198205261100000 >198205261114540 198205261114540 >198205261200000 198205261200000 >198205261323240 198205261323240 >198205261415000 198205261415000 >198205261428360 198205261444540 >198205261500000 198205261732120 >198205261814000 198205262036240 >198205262046540 198205262344540 >198205270001180 198205270137300 >198205270149300 198205270512480 >198205270527060 198205270600060 >198205270612480 198205270900420 >198205270912240 198205271022060 >198205271051060 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  5. How consistent are the relationships among the observations, including topology?
    This data set is from one field activity with unknown instrument calibrations. Processed bathymetric depths were spot checked based on latitude and longitude against the Global Multi-Resolution Topography (GMRT) grid within GeoMapApp to ensure reasonable values.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None. These data are held in the public domain.
Use_Constraints:
This information is not intended for navigational purposes. Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data. Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey
    345 Middlefield Road MS 999
    Menlo Park, CA
    USA

    (650) 329-5078 (voice)
    (650) 329-5190 (FAX)
  2. What's the catalog number I need to order this data set? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 01-Feb-2017
Metadata author:
Gregory K. Miller
U.S. Geological Survey
Physical Scientist
U.S. Geological Survey, 600 Fourth Street South
St. Petersburg, FL
USA

(727) 803-8747, ext. 3020 (voice)
gmiller@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/1308.faq.html>
Generated by mp version 2.9.49 on Mon Sep 10 17:43:16 2018