Other ID: none
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Principal Investigator(s): David Twichell
Affiliate Investigator(s): University of Nevada at Las Vegas
Information Specialist(s): David Twichell
Data Type(s): Location-Elevation: Navigation, Seismics: Boomer, Sonar: Sidescan, Sonar: Single Beam
Scientific Purpose/Goals: Complete coverage sidescan sonar mosaic and dense grid of chirp sub-bottom profiles of Boulder Basin and Las Vegas Bay parts of Lake Mead to serve as base map for other environmental studies.
Start Port/Location: Callville Bay Marina, Lake Mead, NV
End Port/Location: Callville Bay Marina, Lake Mead, NV
Start Date: 1999-05-12
End Date: 1999-05-26
Equipment Used: GPS (wh), Boomer, Single channel hydrophone, Echosounder, SIS1000 Sidescan sonar
Information to be Derived:
Summary of Activity and Data Gathered: No web site exists yet, but preliminary interpretation of results from this field operation are summarized in USGS Open-File Report 99-581.
Staff: VeeAnn Atnipp Cross, Kenneth E. Parolski, David Twichell
Notes: Original Center People field contained: Dave Twichell - PI; Ken Parolski - Electronics tech; VeeAnn Cross - Seismic and sidescan processor.
Project = Geophysical investigation of Lake Mead, Geophysical investigation of Lake Mead
Lake Mead, Nevada, Arizona, United States, North America;
|North: 36.2||South: 36||West: -114.9||East: -114.6|
Cross, V.A.A., and Twichell, David C., 2003, Archive of seismic-reflection data collected during USGS Cruise Lake Mead 99014 in Lake Mead - Nevada and Arizona, 14-25 May, 1999: .
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: URL: http://pubs.usgs.gov/of/2009/1150/.
Twichell, D.C., Cross, VeeAnn A., and Belew, Stephen D., 2004, Mapping the floor of Lake Mead (Nevada and Arizona); preliminary discussion and GIS data release: URL: http://pubs.usgs.gov/of/2003/of03-320/.
Twichell, D.C., Cross, VeeAnn A., Rudin, Mark J., and Parolski, Kenneth F., 2000, Surficial geology and distribution of post-impoundment sediment of the western part of Lake Mead based on a sidescan sonar and high-resolution seismic-reflection survey: 28 URL: http://pubs.usgs.gov/of/of99-581/.
Twichell, D.C., Cross, VeeAnn A., Rudin, Mark J., Parolski, Kenneth F., and Rendigs, Richard R., 2001, Surficial geology and distribution of post-impoundment sediment in Las Vegas Bay, Lake Mead: 27 URL: http://pubs.usgs.gov/of/of01-070/.
FAN 1999-014-FA has data viewable in the GeoMappApp/Virtual Ocean applications. To view this data in these applications go to http://www.geomapapp.org/ and http://www.virtualocean.org/. See the instructions for locating USGS data in these applications. You can also view the imagery created from the SEGY data at http://cmgds.marine.usgs.gov/images.php?cruise=1999-014-FA.
|Survey Equipment||Survey Info||Data Type(s)||Data Collected|
|SIS1000 Sidescan sonar||---||Sidescan||1999-014-FA-SO-001-01 ( Sidescan mosaic images)|
Sidescan mosaic ( )
|Echosounder||---||Single Beam||Bathymetry GIS data ( )|
|GPS (wh)||---||Navigation||1999-014-FA-LN-001 ( navigation data)|
|Single channel hydrophone||---||Air Gun / Water Gun|
Sub Bottom Profiler
|1999-014-FA-SE-001-02 ( Interpreted seismic data images)|
1999-014-FA-SE-001-01 ( RAW seismic data images)
1999-014-FA-SE-001-03 ( Raw SEGY data)
Boomer seismic data ( )