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Outreach

Lecture: The Week Lake Tahoe Disappeared, and What Was Revealed by Digitally Draining the Lake

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  Lake Tahoe Bathymetry   Oblique view
Shaded-relief bathymetry of the bottom of Lake Tahoe.
Left: Map view of the entire lake bottom.
Right: Oblique view looking northwestward at McKinney Bay on the west shore of Lake Tahoe.
Images are from USGS Open-File Report 98-509 by Gardner and others, 1998.
Jim Gardner will present the USGS monthly public lecture in Menlo Park on February 25. He will describe multibeam swath-mapping he conducted last summer in Lake Tahoe and display images of the lake bottom. Topics to be covered include:

  • State-of-the-art technology in marine echo-sounding applied for the first time in mapping a lake

  • Collaborative research by the USGS, University of New Brunswick (Canada), and C&C Technologies, Inc. (Louisiana) that yielded more than 65 million depth soundings in 10 days

  • Discoveries of a giant prehistoric landslide and an underwater glacial valley and what they reveal about the history of Lake Tahoe

  • Computer-generated fly-through tours of Lake Tahoe's bottom features

The lecture will take place in USGS Conference Room A, Building 3, Menlo Park, Calif., on Thursday, February 25, at 7 p.m. You can read about USGS research in Lake Tahoe and view images of the lake floor on the Web site.


Related Web Sites
Pacific Sea-Floor Mapping: Lake Tahoe
U.S. Geological Survey (USGS)
USGS Open-File Report 98-509
U.S. Geological Survey (USGS)

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in this issue: Fieldwork Cruise News: R/V Gilbert

Outreach cover story:
USGS Showcased at State Park Dedication

Lecture: Lake Tahoe

Beyond Science

Meetings NAS/NRC Review—Menlo Park

Regional GIS Workshop

Staff & Center News Tom Chase Memorial

Japanese Gas Hydrate Researchers Visit

Wetlands Lecture

Pat McCrory Visit

St. Pete Video Week

Arrivals & Departures—Menlo Park

Arrivals & Departures—Woods Hole

Publications New Book by John C. Behrendt

February Publications List


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