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Coastline Display at Moscone Convention Center in San Francisco

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Laser Surveys Show El Niño's Effects

Interactive Online Lidar Mapping Display An interactive version of the display is online. Follow the Interactive Lidar Mapping Display link from the introduction page
Several presentations and a 9-m-long exhibit showing 1200 km of coastline, given at the Fall AGU Meeting held December 6-10 in San Francisco, focused on changes along the west coast of the U.S. during the 1997-98 El Niño season. Airborne laser terrain mapping allows scientists to map large areas quickly to determine shoreline change after a storm. Up to 5,000 spot elevations with a vertical accuracy of about 10 cm can be collected per second while traveling over the coast at about 45 m per second.

This technology, known as Light Detection and Ranging (LIDAR), uses a laser developed by NASA, deployed aboard a Twin Otter aircraft from NOAA. The USGS, NASA, and NOAA mapped 1200 km of the west coast in October, 1997, and in April, 1998. Some changes to the shoreline from the recent El Niño storms include an area in central Washington that was eroded by 130 m, an area of coastline in northern California that accreted 120 m, massive coastal landslides north of San Francisco, and many examples of cliff and dune erosion of 15 to 20 m. Before and after aerial photographs of the coast are displayed to help visualize the changes shown in laser data.

In addition to the 1200 km of coastline on display, the following related presentations were made:

Related Web Sites
Coastal Erosion Along the U.S. West Coast During the 1997-98 El Niño: Expectations and Observations
U.S. Geological Survey (USGS)
Hurricane & Extreme Storm Impact Studies
U.S. Geological Survey (USGS)

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in this issue: Fieldwork Gas Hydrate Shear Strength

Deep-Water Moorings Recovered

Coastal SWATH Tests

Cape Cod Seafloor Imagery

Outreach cover story:
New Program-Wide Newsletter

Lecture: Tsunami!

Lecture: Navassa Island

Seminar: South Florida Ecosystem Restoration

Meetings NAS/NRC Review

Coastline Lidar Display at AGU

Long Island Sound

INATURES Lessons Learned

Staff & Center News Director Visits Menlo Park

Eastern Region Council Visits Woods Hole

Publications Note From the Editor

January Publications List

FirstGov.gov U. S. Department of the Interior | U.S. Geological Survey
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Updated December 02, 2016 @ 12:09 PM (THF)