- Title:
-
Data of field activity R-1-94-GC in Colorado River from
04/19/1994 to 05/13/1994
- Abstract:
-
Chief Scientists: Roberto Anima, Mike Marlow. Data
(mudseis, Kleinsidescan, Geopulse, underwatertelevision,
bathymetry) of field activity R-1-94-GC in Colorado River
from 04/19/1994 to 05/13/1994,
<http://walrus.wr.usgs.gov/infobank/r/r194gc/html/r-1-94-gc.meta.html>.
- Supplemental_Information:
-
Equipment Used -
mudseis mudseis system (including two pc based computers for data aquisition and a optical laser disk drive)
Kleinsidescan Klein 100 khz side-scan sonar system and related recorders
Geopulse high-resolution geophysical profiler with a single plate source, one single element hydrophone and one 16 element hydrophone
underwatertelevision small underwater video camera sled and video display monitor
bathymetry Lowrance fathometer, two Honda generators, and support equipment for all systems and spares
Notes -
Associated activities with Grand Canyon Sedimentologic Engineering:
<br>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r196gc/html/r-1-96-gc.meta.html>">R-1-96-GC</A>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r296gc/html/r-2-96-gc.meta.html>">R-2-96-GC</A>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r197gc/html/r-1-97-gc.meta.html>">R-1-97-GC</A>
<BR>
<BR>
Associated activities with Colorado Sand distribution Monitoring:
<BR>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r194gc/html/r-1-94-gc.meta.html>">R-1-94-GC</A>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r198gc/html/r-1-98-gc.meta.html>">R-1-98-GC</A>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r199gc/html/r-1-99-gc.meta.html>">R-1-99-GC</A>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r100gc/html/r-1-00-gc.meta.html>">R-1-00-GC</A>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r300gc/html/r-3-00-gc.meta.html>">R-3-00-GC</A>
<A HREF="<http://walrus.wr.usgs.gov/infobank/r/r400gc/html/r-4-00-gc.meta.html>">R-4-00-GC</A>
<HR>
Cruise Summary Notes (modified from 5/27/94 USGS Bulletin)
Recently returning from the Colorado River, Roberto Anima, Mike Marlow, Dave
Hogg, and Kaye Kinoshita report that wind, rain, hail, and heat, were
encountered during an extremely successful geophysical data collection cruise.
The team collected digitized high-resolution geophysics and side-scanning sonar;
fathometer, and underwater video to measure the extent of sediment stored along
fourteen reaches of the Colorado River corridor.
The project is part of the Grand Canyon Environmental Study (GCES) that is
investigating the effects of fluctuating river discharge (controlled by Glenn
Canyon Dam) on the river's ecosystem.
USGS's involvement is to look at the sediment supply along the corridor.
The initial results of the survey revealed that approximately 3 to 9 meters of
sediment cover bedrock or talus along many of the reaches, and that the amount
of talus in the river, from the margins, greatly effects the amount of sediment
cover.
Dave Hogg, Fred Paine, Mike Boyle and the rest of the ET shop did an outstanding
job of preparing all the electronics and boxing the equipment for the wet and
bumpy conditions encountered in the rapids.
Only two very minor wiring problems occurred during the 21 days of surveying.
Publications -
Anima, Roberto J, Marlow, Michael S, Rubin, David M. Hogg, David J., 1998,
Comparison of sand distribution between April 1994 and June 1996 along six
reaches of the Colorado River in Grand Canyon, Arizona:
U.S. Geological Survey open-file report 98-141.
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, Data of field activity R-1-94-GC in Colorado River from 04/19/1994 to 05/13/1994: U.S. Geological Survey (USGS) <http://www.usgs.gov>, Coastal and Marine Geology (CMG) <http://walrus.wr.usgs.gov>, Menlo Park, CA.
Online Links:
- What geographic area does the data set cover?
- West_Bounding_Coordinate: -115.75000
- East_Bounding_Coordinate: -110.25000
- North_Bounding_Coordinate: 37.75000
- South_Bounding_Coordinate: 35.25000
- What does it look like?
- Does the data set describe conditions during a particular time period?
- Beginning_Date: 19-Apr-1994
- Ending_Date: 13-May-1994
- 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: Colorado River
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?
Roberto Anima (Chief Scientist, USGS Western Region);
Mike Marlow (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:
- Other_Citation_Details:
-
Anima, Roberto J, Marlow, Michael S, Rubin, David M. Hogg, David J., 1998,
Comparison of sand distribution between April 1994 and June 1996 along six
reaches of the Colorado River in Grand Canyon, Arizona:
U.S. Geological Survey open-file report 98-141.
- 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 (r-1-94-gc.050 [SINS])
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
199401010101000 199401050101000
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 R-1-94-GC data set <http://walrus.wr.usgs.gov/infobank/r/r194gc/html/r-1-94-gc.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>)
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