Other ID: MEAD 01007; IB H-1-01-GC
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Principal Investigator(s): David Twichell
Affiliate Investigator(s): Mark Rudin, UNLV
Information Specialist(s): David Twichell
Data Type(s): Location-Elevation: Navigation, Seismics: Boomer, Sonar: Sidescan, Sonar: Single Beam
Scientific Purpose/Goals: Sidescan sonar and high-resolution seismic reflection mapping of Lake Mead to map the surficial geology of the lake floor and the thickness and distribution of post-impoundment sediment in the lake.
Start Port/Location: Callville Bay Marina, NV
End Port/Location: Callville Bay Marina, NV
Start Date: 2001-04-01
End Date: 2001-04-26
Equipment Used: SIS1000 Sidescan sonar, Echosounder, Boomer, Plugger GPS, HYPACK, Single channel hydrophone
Information to be Derived:
Summary of Activity and Data Gathered: Sidescan sonar imagery and chirp sub-bottom profiles were collected along 955 km of survey tracklines. Data were collected along lines spaced 500-700 m apart and provided nearly complete sidescan coverage of the eastern two-thirds of the lake as well as a dense grid of sub-bottom profiles. Boomer sub-bottom profiles were collected along 96 km of tracks to provide deeper penetration in the areas of thick sediment cover.
Staff: Charles Worley, David Twichell, Kenneth E. Parolski, VeeAnn Atnipp Cross
Notes: Original Center People field contained: Dave Twichell - ch. sci.; Ken Parolski - mobilization and field technician; VeeAnn Cross - data processor and GIS specialist; Chuck Worley - cruise mobilization.
Project = Lake Mead Sediment Study, Lake Mead Sediment Study
Lake Mead, Nevada, Arizona, United States, North America;
|North: 36.5||South: 36||West: -114.77||East: -114.01|
Cross, V.A.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.
Cross, V.A.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.
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: 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: U.S. Geological Survey Open-File Report 2003-320, DVD, URL: http://pubs.usgs.gov/of/2003/of03-320/.
FAN 2001-007-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=2001-007-FA.
|Survey Equipment||Survey Info||Data Type(s)||Data Collected|
|SIS1000 Sidescan sonar||---||Sidescan||Sidescan mosaic ( )|
|Echosounder||---||Single Beam||Bathymetry GIS data ( )|
|Plugger GPS||---||Navigation||Nav data ( )|
|Single channel hydrophone||---||Air Gun / Water Gun|
Sub Bottom Profiler
|Chirp seismic data ( )|
Boomer seismic data ( )
2001-007-FA-SE-001 ( Raw SEGY chirp data)
2001-007-FA-SE-002 ( Raw SEGY boomer data)