- Title:
-
Geophysical data of field activity 01007 (H-1-01-GC) in Lake
Mead from 04/01/2001 to 04/26/2001
- Abstract:
-
University of Nevada, Las Vegas,United States Geological
Survey, Woods Hole, Massachusetts. Chief Scientist: Dave
Twichell. Geophysical data (SIS1000, GPS, boomer, bathymetry)
of field activity 01007 (H-1-01-GC) in Lake Mead from
04/01/2001 to 04/26/2001,
<http://walrus.wr.usgs.gov/infobank/h/h101gc/html/h-1-01-gc.meta.html>.
- Supplemental_Information:
-
Equipment Used -
SIS1000 sidescan system with 110-volt winch and ISIS
GPS plugger gps and Hypak nav system
boomer boomer system with Elics data logger, processing computer for seismic and sidescan data
bathymetry fathometer
Notes -
Navigation techniques:
Global Positioning System (GPS),
Precision Lightweight GPS Receiver (PLGR or plugger)
<http://www.navcen.uscg.gov/gps/default.htm>
<http://www.dtic.mil/armylink/news/Sep1998/a19980915newgsp.html>
Publications -
Cross, VeeAnn A., and Twichell, David C.,2003, Archive of seismic-reflection data collected during USGS Cruise Lake Mead 01007 in Lake Mead, Nevada and Arizona, 1-28 April, 2001: U.S. Geological Survey Open-File Report 2002-478, DVD-ROM
Cross, VeeAnn A., and Twichell, David C.,2003, Archive of seismic-reflection data collected during USGS Cruise Lake Mead 00027 in Lake Mead - Nevada, 1-6 June, 2000: U.S. Geological Survey Open-File Report 2003-4, DVD-ROM
Twichell, David C., Cross, VeeAnn A., and Belew, Stephen D.,2004, Mapping the
floor of Lake Mead (Nevada and Arizona); preliminary discussion and GIS data
release: U.S. Geological Survey Open-File Report 2003-320, DVD. URL:
<A HREF ="<http://pubs.usgs.gov/of/2003/of03-320/>" target ="OF"><http://pubs.usgs.gov/of/2003/of03-320/>
Twichell, D.C., and Cross, V.A.,2009, Surficial geology of the floor of Lake
Mead (Arizona and Nevada) as defined by sidescan-sonar imagery, lake-floor
topography, and post-impoundment sediment thickness: U.S. Geological Survey
Open-File Report 2009-1150, CD-ROM. URL:
<A HREF ="<http://pubs.usgs.gov/of/2009/1150/>" target ="OF"><http://pubs.usgs.gov/of/2009/1150/>
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, Geophysical data of field activity 01007 (H-1-01-GC) in Lake Mead from 04/01/2001 to 04/26/2001: 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: -114.75605
- East_Bounding_Coordinate: -114.02402
- North_Bounding_Coordinate: 36.48445
- South_Bounding_Coordinate: 36.01400
- What does it look like?
- Does the data set describe conditions during a particular time period?
- Beginning_Date: 01-Apr-2001
- Ending_Date: 26-Apr-2001
- 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: Lake Mead
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?
Dave Twichell (Chief Scientist, USGS Woods Hole );
Ken Parolski (Mobilization and Field Technician, USGS Woods Hole );
Veeann Cross (Data Processor and GIS Specialist, USGS Woods Hole );
Chuck Worley (Cruise Mobilization, USGS Woods Hole);
Mark Rudin (Captain, UNLV)
- 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: 17-Apr-2008 (process 1 of 1)
-
Navigation Data
Times are bogus
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:
-
Cross, VeeAnn A., and Twichell, David C.,2003, Archive of seismic-reflection data collected during USGS Cruise Lake Mead 01007 in Lake Mead, Nevada and Arizona, 1-28 April, 2001: U.S. Geological Survey Open-File Report 2002-478, DVD-ROM
Cross, VeeAnn A., and Twichell, David C.,2003, Archive of seismic-reflection data collected during USGS Cruise Lake Mead 00027 in Lake Mead - Nevada, 1-6 June, 2000: U.S. Geological Survey Open-File Report 2003-4, DVD-ROM
Twichell, David C., Cross, VeeAnn A., and Belew, Stephen D.,2004, Mapping the
floor of Lake Mead (Nevada and Arizona); preliminary discussion and GIS data
release: U.S. Geological Survey Open-File Report 2003-320, DVD. URL:
<A HREF ="<http://pubs.usgs.gov/of/2003/of03-320/>" target ="OF"><http://pubs.usgs.gov/of/2003/of03-320/>
Twichell, D.C., and Cross, V.A.,2009, Surficial geology of the floor of Lake
Mead (Arizona and Nevada) as defined by sidescan-sonar imagery, lake-floor
topography, and post-impoundment sediment thickness: U.S. Geological Survey
Open-File Report 2009-1150, CD-ROM. URL:
<A HREF ="<http://pubs.usgs.gov/of/2009/1150/>" target ="OF"><http://pubs.usgs.gov/of/2009/1150/>
- 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 (h-1-01-gc.061 [GPS])
YYYYMMDDHHMMSST YYYYMMDDHHMMSST
200101010000001 200101010121176
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 01007 (H-1-01-GC) data set <http://walrus.wr.usgs.gov/infobank/h/h101gc/html/h-1-01-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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