- Title:
-
Geological and Geophysical data of field activity F-2-95-NC
in Big Lagoon, Stone Lagoon - Northern California from
09/27/1995 to 09/29/1995
- Abstract:
-
United States Geological Survey, Menlo Park, California.
Chief Scientists: Sam Clarke, Andy Stevenson. Geological and
Geophysical data (Geopulse, 7khz, 200khz, pcode) of field
activity F-2-95-NC in Big Lagoon, Stone Lagoon - Northern
California from 09/27/1995 to 09/29/1995,
<http://walrus.wr.usgs.gov/infobank/f/f295nc/html/f-2-95-nc.meta.html>.
- Supplemental_Information:
-
Equipment Used -
Geopulse w/mudseis
7khz
200khz Lorance profilers
pcode GPS navigation
Notes -
Analog records from the systems employed. The seemingly annual
end-of-the-fiscal-year fun in northern California-Oregon this year involved
collection of high-resolution seismic data from Big Lagoon and Stone Lagoon
north of Eureka, California.
The crew of Sam Clarke, Andy Stevenson, and Dave Hogg aboard "Fast" Eddy
collected 40 lines of Geopulse, 7kHz, and 200 Khz data from the lagoons, seeking
evidence of faulting and coseismic deformation from the lower plates of thrust
faults in an active forearc thrust system.
We hope that this information will ultimately contribute to knowledge of
earthquake recurrence intervals and magnitudes. There were some
difficulties with P-code GPS locations, and interpretation remains, but the
data look good and should provide bonus information on processes related to
flushing and filling of the lagoons. The water level in Lake Earl, near
Crescent City, was too low to launch Eddy, so we missed one target. Great
weather (mostly), elk herds, river otter, and a brief road race with a
black bear -- geology at its best.
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.).
- 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, Geological and Geophysical data of field activity F-2-95-NC in Big Lagoon, Stone Lagoon - Northern California from 09/27/1995 to 09/29/1995: U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.
Online Links:
- What geographic area does the data set cover?
- West_Bounding_Coordinate: -125.75000
- East_Bounding_Coordinate: -122.25000
- North_Bounding_Coordinate: 41.75000
- South_Bounding_Coordinate: 37.75000
- What does it look like?
- Does the data set describe conditions during a particular time period?
- Beginning_Date: 27-Sep-1995
- Ending_Date: 29-Sep-1995
- Currentness_Reference: ground condition
- What is the general form of this data set?
- How does the data set represent geographic features?
- How are geographic features stored in the data set?
- Indirect_Spatial_Reference: Big Lagoon, Stone Lagoon - Northern California
This is a Point data set.
It contains the following vector data types (SDTS terminology):
- 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
- 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>
- Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Who also contributed to the data set?
Sam Clarke (Chief Scientist, USGS Western Region );
Andy Stevenson (Chief Scientist, USGS Western Region)
- To whom should users address questions about the data?
These data and information are intended for science
researchers, students from elementary through
college, policy makers, and general public.
- From what previous works were the data drawn?
- How were the data generated, processed, and modified?
- Date: 13-Jan-2011 (process 1 of 1)
-
Navigation Data
Unknown
Person who carried out this activity:
- 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:
- How well have the observations been checked?
Identified as best available version.
- How accurate are the geographic locations?
Unspecified
- How accurate are the heights or depths?
Unspecified
- Where are the gaps in the data? What is missing?
Start and end date/times of data
Navigation Data (f-2-95-nc.050 [SINS])
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
199501010101000 199501050101000
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
- How consistent are the relationships among the observations, including topology?
Unspecified
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.
- Who distributes the data set? (Distributor 1 of 1)
- What's the catalog number I need to order this data set?
Downloadable Data F-2-95-NC data set <http://walrus.wr.usgs.gov/infobank/f/f295nc/html/f-2-95-nc.meta.html>
- 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.
- How can I download or order the data?
- Availability in digital form:
- Cost to order the data: None
- Dates:
- Last modified: 31-Mar-2013
- Metadata author:
-
- 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 07:12:53 2013
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