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What does this data set describe?

Title:
Geophysical data of field activity S-1-96-WO in Cascadia, Washington from 04/14/1996 to 06/06/1996
Abstract:
Chief Scientists: Mike Fisher, Ernst Flueh. Geophysical data (bottomseismometer, GPS) of field activity S-1-96-WO in Cascadia, Washington from 04/14/1996 to 06/06/1996, <http://walrus.wr.usgs.gov/infobank/s/s196wo/html/s-1-96-wo.meta.html>.
Supplemental_Information:

Equipment Used -
bottomseismometer
GPS
Notes -
SUCCESSFUL SONNE CRUISE RESULTS ENHANCED BY EARTHQUAKE


The German research vessel Sonne came into port in Astoria, Oreg., on May 22,
after completing seismic studies of earthquake hazards
posed by the subduction zone off Washington and Oregon.


Co-chief scientist Mike Fisher
(the other co-chief was Ernst Flueh of GEOMAR, Germany)
was disappointed that strong currents in the Columbia River
forced the Sonne to be pulled into the dock stern-first by a tugboat,
thus preventing a more triumphant entry.


But Mike had little else to complain about,
reporting "spectacular success" for the cruise.
Generally good weather allowed data collection
on all but 3 days of the 5-week cruise.
As Mike reported to Steve Bohlen,
"Thanks to a highly skilled and motivated German-American crew
we achieved nearly everything we had proposed to do.


We have multichannel seismic lines that show
the downgoing oceanic plate 120 km eastward from the trench.
Using these data...with detailed, wide-angle information,
I'm confident that we will make decisive statements about
the earthquake environment of the subduction zone."


Tom Parsons led an onshore crew that set up and maintained three east-west lines
of seismometers to extend the Sonne results across western Washington.
Additional data were contributed by cooperators
Anne Trehu of Oregon State University,
who ran two lines of seismometers in northern Oregon, and
Steve Malone of the University of Washington,
who maintains a permanent network of seismometers around northern Washington.


An unexpected bonus was a magnitude 5.4 earthquake
centered east of Seattle that occurred on May 2 and
was recorded by seismometers on- and offshore.
Data from the earthquake and its aftershocks
may sharpen the picture of the downgoing oceanic plate.


In addition to getting good data, the project team also had good luck
with equipment and logistics:
Out of 22 ocean-bottom seismometers (OBS's), only one was lost;
two others were snagged by fishermen and eventually returned.


At the end of the cruise,
the USGS equipment was cleared from the Sonne in less than 24 hours,
amazing the ship's captain and the co-chief scientist Flueh.
The Germans were also amazed by Dave Scholl.
As Mike reported to Steve Bohlen,
"[The Germans] knew of his world-class status as a scientist,
but they were unprepared for a 65-year-old, Herr Professor Doktor
who relishes getting his hands dirty.
Most German scientists with his credentials
pass time sipping coffee with the captain.




In contrast, Dave made every streamer and airgun party,
activities we dubbed "deck sports."
He cheerfully wrapped miles of tape around wires, tugged on airgun hoses, and
hustled everywhere to toss in his muscle....Dave definitely leads from the front."


Another part of Mike's report to Bohlen reveals
just how far-reaching were the Sonne's effects:
"Steve Lewis (ex-USGS, now SRI) said that Navy, submarine, sound arrays
near Kamchatka were picking up odd noise from near Oregon and Washington.
Steve impressed the Navy types by guessing correctly that the odd sounds
were low- frequency bursts every 20 seconds.
He explained that he knew all about the Sonne because he had friends onboard."


Now begins the task of processing and interpreting the data,
which will take a couple of years.
Eventually the results will be used by scientists, planners,
government officials, and others to assess and mitigate earthquake hazards
in densely populated areas of the Pacific Northwest.
Geologic evidence suggests that a future earthquake there
may be as large as magnitude 9.
Publications -
Flueh, E.R., Fisher, M.A., Bialas, Joerg, Childs, J.R., Klaeschen, Dirk, Kukowski, Nina, Parsons, Tom, Scholl, D.W., ten Brink, Uri, Trehu, A.M., and Vidal, Neus, 1998, New seismic images of the Cascadia subduction zone from cruise SO108 -- ORWELL, Tectonophysics, 293, 69-84. URL:
<A HREF = "<http://dx.doi.org/10.1016/S0040-1951(98>)00091-2" target = "TC"><http://dx.doi.org/10.1016/S0040-1951(98>)00091-2</A>

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/>, 20131029, Geophysical data of field activity S-1-96-WO in Cascadia, Washington from 04/14/1996 to 06/06/1996: 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: -126.98272
    East_Bounding_Coordinate: -124.12401
    North_Bounding_Coordinate: 48.22310
    South_Bounding_Coordinate: 44.11871

  3. What does it look like?

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

    Beginning_Date: 14-Apr-1996
    Ending_Date: 06-Jun-1996
    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: Cascadia, Washington
      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:
    Bathymetry with Time Stamp <http://walrus.wr.usgs.gov/infobank/programs/html/definition/bath.html>
    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?

    Mike Fisher (Chief Scientist, USGS Western Region); Ernst Flueh (Chief Scientist, Geomar, Germany)

  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: 11-Jul-2000 (process 1 of 2)
    Navigation Data
    time/lat/long style, multi-record, in caps
    temporal-spatial data
    data acquisition systems
    
           1         2         3
    3456789012345678901234567890123456
    

    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>

    Date: 03-Nov-2008 (process 2 of 2)
    Bathymetry Data
    11/03/2008 jpaz /infobank/s/s196wo/bath/s-1-96-wo.300_060
    /infobank/programs/edit/automerge/automerge
    
    Input was...
    time/lat/long style, multi-record, in caps
    temporal-spatial data
    data acquisition systems
    
           1         2         3
    3456789012345678901234567890123456
    time, lat, long, time(sec) to nearest nav fix, data values
    

    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:
    Flueh, E.R., Fisher, M.A., Bialas, Joerg, Childs, J.R., Klaeschen, Dirk, Kukowski, Nina, Parsons, Tom, Scholl, D.W., ten Brink, Uri, Trehu, A.M., and Vidal, Neus, 1998, New seismic images of the Cascadia subduction zone from cruise SO108 -- ORWELL, Tectonophysics, 293, 69-84. URL: <A HREF = "<http://dx.doi.org/10.1016/S0040-1951(98>)00091-2" target = "TC"><http://dx.doi.org/10.1016/S0040-1951(98>)00091-2</A>



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 (s-1-96-wo.060 [GPS])
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    199604230030277    199604231212278
    199604231230278    199604231853429
    199604242017062    199604250359363
    199604250415213    199604251020364
    199604251053364    199604251851214
    199604271500088    199604281650390
    199604300237392    199605010053393
    199605010101393    199605010643394
    199605030100001    199605032126003
    199605032141003    199605040504003
    199605052315004    199605071759007
    199605090838599    199605101425001
    199605111926579    199605120954534
    199605121904026    199605131156454
    199605132127165    199605141720499
    199605142319140    199605150937512
    199605150946151    199605151612452
    199605160110204    199605161413546
    199605161656136    199605162152407
    199605170006018    199605171810531
    199605181426055    199605190337477
    199605190730118    199605191049398
    199605191551039    199605200208531
    199605200216351    199605200734442
    199605201712199    199605202002470
    199605202114110    199605212202344
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Bathymetry Data (s-1-96-wo.300_060)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    199604230030277    199604231212278
    199604231230278    199604231853429
    199604242017062    199604250359363
    199604250415213    199604251020364
    199604251053364    199604251851214
    199604271500088    199604281650390
    199604300237392    199605010053393
    199605010101393    199605010643394
    199605030100001    199605032126003
    199605032141003    199605040504003
    199605052315004    199605071759007
    199605090838599    199605101425001
    199605111926579    199605120954534
    199605121904026    199605131156454
    199605132127165    199605141720499
    199605142319140    199605150937512
    199605150946151    199605151612452
    199605160110204    199605161413546
    199605161656136    199605162152407
    199605170006018    199605171810531
    199605181426055    199605190337477
    199605190730118    199605191049398
    199605191551039    199605200208531
    199605200216351    199605200734442
    199605201712199    199605202002470
    199605202114110    199605212202344
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Seismic Shots Data (s-1-96-wo.400_060)
    YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    199604230030277    199604231212278
    199604231230278    199604231853429
    199604242017062    199604250359363
    199604250415213    199604251020364
    199604251053364    199604251851214
    199604271500088    199604281650390
    199604300237392    199605010053393
    199605010101393    199605010643394
    199605030100001    199605032126003
    199605032141003    199605040504003
    199605052315004    199605071759007
    199605090838599    199605101425001
    199605111926579    199605120954534
    199605121904026    199605131156454
    199605132127165    199605141720499
    199605142319140    199605150937512
    199605150946151    199605151612452
    199605160110204    199605161413546
    199605161656136    199605162152407
    199605170006018    199605171810531
    199605181426055    199605190337477
    199605190730118    199605191049398
    199605191551039    199605200208531
    199605200216351    199605200734442
    199605201712199    199605202002470
    199605202114110    199605212202344
    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 S-1-96-WO data set <http://walrus.wr.usgs.gov/infobank/s/s196wo/html/s-1-96-wo.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: 1.4
Network links: <http://walrus.wr.usgs.gov/infobank/s/s196wo/html/s-1-96-wo.nav.html>

Data format: ASCII Size: 2.2
Network links: <http://walrus.wr.usgs.gov/infobank/s/s196wo/html/s-1-96-wo.bath.html>

Data format: ASCII Size: 1.9
Network links: <http://walrus.wr.usgs.gov/infobank/s/s196wo/html/s-1-96-wo.seis.html>

  • Cost to order the data: None


  • Who wrote the metadata?

    Dates:
    Last modified: 29-Oct-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 Tue Oct 29 15:18:51 2013