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What does this data set describe?

Title:
Geophysical data of field activity EW9409 (E-9-94-AA) in Aleutian volcanic arc and the back-arc Bering Shelf, AK from 07/06/1994 to 08/03/1994
Abstract:
Lamont-Doherty Earth Observatory,Stanford University,University of Delaware,University of Texas,Woods Hole Oceanographic Institution. Chief Scientists: Sue McGeary, Nathan Bangs, John Diebold, Steve Holbrooke, Simon Klemperer. Geophysical data (airgun) of field activity EW9409 (E-9-94-AA) in Aleutian volcanic arc and the back-arc Bering Shelf, AK from 07/06/1994 to 08/03/1994, <http://walrus.wr.usgs.gov/infobank/e/e994aa/html/e-9-94-aa.meta.html>.
Supplemental_Information:

Equipment Used -
airgun
Notes -
is related to activity A-1-94-AA.
Publications -
<A HREF="<http://pangea.stanford.edu/research/crustal/aleut/>"><http://pangea.stanford.edu/research/crustal/aleut/><BR>
<HR>
<A HREF="<http://woodshole.er.usgs.gov/operations/obs/aleut94.html>"><http://woodshole.er.usgs.gov/operations/obs/aleut94.html><BR>

Similar information is available for thousands of other USGS/CMG-related Activities.
If known, available are Activity-specific navigation, gravity, magnetics, bathymetry, seismic, and sampling data; track maps; and equipment information; as well as summary overviews, crew lists, and information about analog materials.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Primary access to the USGS/CMG Information Bank's digital data, analog data, and metadata is provided through... <http://walrus.wr.usgs.gov/infobank/>
This page accomodates a variety of search approaches (e.g., by platform, by region, by scientist, by equipment type, etc.).
  1. How should this data set be cited?

    U.S. Geological Survey (USGS) <http://www.usgs.gov/>, Coastal and Marine Geology Program (CMGP) <http://marine.usgs.gov/>, 20130331, Geophysical data of field activity EW9409 (E-9-94-AA) in Aleutian volcanic arc and the back-arc Bering Shelf, AK from 07/06/1994 to 08/03/1994: U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -173.94342
    East_Bounding_Coordinate: -159.10624
    North_Bounding_Coordinate: 58.96491
    South_Bounding_Coordinate: 48.79639

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 06-Jul-1994
    Ending_Date: 03-Aug-1994
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect_Spatial_Reference: Aleutian volcanic arc and the back-arc Bering Shelf, AK
      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 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257.

      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values


  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Navigation with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/nav.html>
    Entity_and_Attribute_Overview:
    Seismic Shots with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/seis.html>

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Sue McGeary (Chief Scientist, University of Delaware); Nathan Bangs (Chief Scientist, University of Texas); John Diebold (Chief Scientist, Lamont); Steve Holbrooke (Chief Scientist, WHOI); Simon Klemperer (Chief Scientist, Stanford University); Gerard Bond,); Peter Buhl,)

  3. To whom should users address questions about the data?

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

Why was the data set created?

These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.

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: 12-Mar-2002 (process 1 of 1)
    Navigation Data Unknown

    Person who carried out this activity:

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

  3. What similar or related data should the user be aware of?

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Unknown, USGS/CMG Information Bank <http://walrus.wr.usgs.gov/infobank/>: U.S. Geological Survey (USGS) <http://www.usgs.gov> Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.

    Online Links:

    Other_Citation_Details:
    <A HREF="<http://pangea.stanford.edu/research/crustal/aleut/>"><http://pangea.stanford.edu/research/crustal/aleut/> <A HREF="<http://woodshole.er.usgs.gov/operations/obs/aleut94.html>"><http://woodshole.er.usgs.gov/operations/obs/aleut94.html>


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

  1. How well have the observations been checked?

    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 (e-9-94-aa.060 [GPS])
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
199407090454182    199407091042208
199407091048409    199407091059399
199407091106552    199407110339523
199407110509528    199407111628549
199407111732585    199407112050394
199407112106595    199407112106595
199407112200198    199407140337176
199407140349198    199407160534090
199407160554297    199407160554297
199407160659182    199407170520266
199407171114107    199407172131220
199407172140570    199407172302284
199407172327120    199407180759446
199407180938518    199407200446078
199407200545036    199407202156034
199407202311016    199407211548589
199407211555214    199407222304088
199407230020321    199407240153429
199407240453332    199407251021155
199407251036464    199407260919338
199407260941141    199407262036093
199407262047557    199407262244039
199407262302200    199407270011182
199407270017492    199407270352113
199407270415258    199407290134588
199407290208182    199407291334572
199407291403250    199407302252501
199407310008325    199408010508558
199408010617529    199408021100314
199408021125419    199408022222373
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Seismic Shots Data (e-9-94-aa.410)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
199407090454182    199407091042208
199407091048409    199407091059399
199407091106552    199407110339523
199407110509528    199407111628549
199407111732585    199407112050394
199407112106595    199407112106595
199407112200198    199407140337176
199407140349198    199407160534090
199407160554297    199407160554297
199407160659182    199407170520266
199407171114107    199407172131220
199407172140570    199407172302284
199407172327120    199407180759446
199407180938518    199407200446078
199407200545036    199407202156034
199407202311016    199407211548589
199407211555214    199407222304088
199407230020321    199407240153429
199407240453332    199407251021155
199407251036464    199407260919338
199407260941141    199407262036093
199407262047557    199407262244039
199407262302200    199407270011182
199407270017492    199407270352113
199407270415258    199407290134588
199407290208182    199407291334572
199407291403250    199407302252501
199407310008325    199408010508558
199408010617529    199408021100314
199408021125419    199408022222373
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST

  5. How consistent are the relationships among the observations, including topology?

    Unspecified

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints:
Physical materials are under controlled on-site access.
If available, access to physical samples is described in the "WR CMG Sample Distribution Policy" at: <http://walrus.wr.usgs.gov/infobank/programs/html/main/sample-dist-policy.html>
Use_Constraints:
Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Physical materials are under controlled on-site access.
Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

  2. What's the catalog number I need to order this data set?

    Downloadable Data EW9409 (E-9-94-AA) data set <http://walrus.wr.usgs.gov/infobank/e/e994aa/html/e-9-94-aa.meta.html>

  3. What legal disclaimers am I supposed to read?

    Please recognize the U.S. Geological Survey (USGS) as the source of this information.
    Physical materials are under controlled on-site access.
    Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.
    This information is not intended for navigational purposes.
    Any use of trade, firm, or product 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?

    • Availability in digital form:

Data format: ASCII Size: 8.3
Network links: <http://walrus.wr.usgs.gov/infobank/e/e994aa/html/e-9-94-aa.nav.html>

Data format: ASCII Size: 1.4
Network links: <http://walrus.wr.usgs.gov/infobank/e/e994aa/html/e-9-94-aa.seis.html>

  • Cost to order the data: None

    • Who wrote the metadata?

    Dates:
    Last modified: 31-Mar-2013
    Metadata author:
    U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>
    Attn: Clint Steele <http://walrus.wr.usgs.gov/staff/csteele.html>
    InfoBank Group Leader <http://walrus.wr.usgs.gov/staff/csteele.html>
    USGS, MailStop 999, 345 Middlefield Road
    Menlo Park, CA 94025-3561
    USA

    (650) 329-5055 (voice)
    (650) 329-5190 (FAX)
    infobank@octopus.wr.usgs.gov <mailto:infobank@octopus.wr.usgs.gov>

    Metadata standard:
    FGDC Content Standards for Digital Geospatial Metadata <http://www.fgdc.gov/> (FGDC-STD-001-1998 <http://www.its.nbs.gov/nbs/meta/meta.html>)

    Generated by mp version 2.9.13 on Sun Mar 31 07:12:24 2013