Field Activity 1999-014-FA

Identifier 1999-014-FA
Purpose 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.
Location Lake Mead, Nevada, Arizona, United States, North America;
Summary No web site exists yet, but preliminary interpretation of results from this field operation are summarized in USGS Open-File Report 99-581.
Comments 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
Related activities
2000-027-FA: Project
2000-056-FA: Project
2001-007-FA: Project
2002-017-FA: Project
2002-069-FA: Project
60-foot house boat. 16-foot beam.
Start Callville Bay Marina, Lake Mead, NV 1999-05-12
End Callville Bay Marina, Lake Mead, NV 1999-05-26
Days in the field 15
West -114.86298052
East -114.58357804
North 36.15112082
South 36.01251146


384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators David C Twichell
Crew members
David C Twichell
Scientist, Staff
VeeAnn A. Cross
Scientist, Staff
Kenneth Parolski
Scientist, Staff
Information specialist(s)
David C Twichell
Specialist, Information
Affiliate principal University of Nevada at Las Vegas
Affiliate staff Mark Rudin, UNLV

Data types and categories

Data category: Location-Elevation, Seismics, Sonar
Data type: Sub Bottom Profiler, Navigation, Sidescan, Single Beam

Documents: Notes and log books

Name Description
Cruise log Watchstanders' log of data collection, navigation, equipment notes, disk and line changes. Times recorded, not navigation fixes.
ISIS log ISIS system log of file and line changes, data collection notes

Equipment used

Equipment Usage description Data types Datasets
P-code GPS Navigation 1
Odom Digitrace 200kHz Single Beam 1
SIS1000 Chirp Sonar Sub Bottom Profiler 5
SIS1000 Sidescan sonar Sidescan 2


Datasets produced in this activity

Dataset name Equipment Description Dataset contact
1999-014-FA-LN-001 P-code GPS All navigation data acquired on the field activity David C Twichell
Bathymetry GIS data Odom Digitrace 200kHz Linda P McCarthy
1999-014_Chirp_shot_nav SIS1000 Chirp Sonar Point shapefile of shot point navigation at 100 shot intervals. VeeAnn A. Cross
1999-014-FA-SE-001-01 SIS1000 Chirp Sonar RAW seismic data images Nancy K. Soderberg
1999-014-FA-SE-001-02 SIS1000 Chirp Sonar Interpreted seismic data images Nancy K. Soderberg
1999-014-FA-SE-001-03 SIS1000 Chirp Sonar Raw SEGY data Gregory K Miller
1999-014 seisnav SIS1000 Chirp Sonar Trackline navigation of chirp seismic data VeeAnn A. Cross
1999-014_sscan_mosaic SIS1000 Sidescan sonar Boulder Basin enhanced sidescan sonar mosaic - UTM projection. Linda P McCarthy
1999-014_sscan_mosaic_geog SIS1000 Sidescan sonar Boulder Basin enhanced sidescan sonar mosaic - geographic coordinate system. VeeAnn A. Cross


Samples collected during this field activity