Other ID: none
Status: Completed
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Funding Program(s):
Principal Investigator(s): David Twichell
Affiliate Investigator(s): University of Nevada at Las Vegas
Information Specialist(s): David Twichell
Data Type(s): Seismics: Sub Bottom Profiler, Location-Elevation: Navigation, 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.
Vehicle(s):
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: P-code GPS, Odom Digitrace 200kHz, SIS1000 Chirp Sonar, 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 Cross, Kenneth F. Parolski, David Twichell
Affiliate Staff:
Mark Rudin
UNLV
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
Location:
Lake Mead, Nevada, Arizona, United States, North America;
| Boundaries | |||
|---|---|---|---|
| North: 36.15112082 | South: 36.01251146 | West: -114.86298052 | East: -114.58357804 |
Platform(s):
Houseboat-200 |
Cross, V.A., and Twichell, D.C., 2003, Archive of seismic-reflection data collected during USGS Cruise Lake Mead 99014 in Lake Mead - Nevada and Arizona, 14-25 May, 1999: U.S. Geological Survey Open-File Report 2003-3, https://doi.org/10.3133/ofr033.
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, https://doi.org/10.3133/ofr20091150.
Twichell, D.C., Cross, V.A., and Belew, S.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: https://doi.org/10.3133/ofr03320.
Twichell, D.C., Cross, V.A., Rudin, M.J., and Parolski, K.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: U.S. Geological Survey Open-File Report 99-581, 28 p., URL: https://doi.org/10.3133/ofr99581.
Twichell, D.C., Cross, V.A., Rudin, M.J., Parolski, K.F., and Rendigs, R.R., 2001, Surficial geology and distribution of post-impoundment sediment in Las Vegas Bay, Lake Mead: U.S. Geological Survey Open-File Report 2001-70, 27 p., URL: https://doi.org/10.3133/ofr0170.
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 https://cmgds.marine.usgs.gov/images.php?cruise=1999-014-FA.
| Title | Survey Equipment | Description |
|---|---|---|
| Cruise log | (document not focused on specific equipment) | Watchstanders' log of data collection, navigation, equipment notes, disk and line changes. Times recorded, not navigation fixes. |
| ISIS log | SIS1000 Sidescan sonar | ISIS system log of file and line changes, data collection notes |
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| P-code GPS | --- | Navigation | 1999-014-FA-LN-001 (All navigation data acquired on the field activity) |
| Odom Digitrace 200kHz | --- | Single Beam | Bathymetry GIS data |
| SIS1000 Chirp Sonar | --- | Sub Bottom Profiler | 1999-014_Chirp_shot_nav (Point shapefile of shot point navigation at 100 shot intervals.) 1999-014 seisnav (Trackline navigation of chirp seismic data) 1999-014-FA-SE-001-01 (RAW seismic data images) 1999-014-FA-SE-001-02 (Interpreted seismic data images) 1999-014-FA-SE-001-03 (Raw SEGY data) |
| SIS1000 Sidescan sonar | --- | Sidescan | 1999-014_sscan_mosaic (Boulder Basin enhanced sidescan sonar mosaic - UTM projection.) 1999-014_sscan_mosaic_geog (Boulder Basin enhanced sidescan sonar mosaic - geographic coordinate system.) |
