natural hazards

EARTH Magazine: Hazard Lingers After South Napa Earthquake

After the Aug. 24, 2014, Napa Valley earthquake, movement continued along the principal fault to the north of the epicenter, according to a report released by the U.S. Geological Survey. Such "afterslip" is known from previous quakes, but this is the first time that strong afterslip has been observed in a populated residential community.

EARTH Magazine: The '100-year-flood' fallacy: Return periods misleading in communication of flood risk

Return periods refer to the amount of time that passes on average between consecutive events of similar magnitude for a given location. But when it comes to communicating potential risk from flooding, return periods give many people a false sense of security, partly because they are often mistaken as absolutes instead of averages.

Oversight Hearing on "Volcano Hazards: Exploring the National Preparation and Response Strategy"

Dynamic Planet glyph

House Committee on Natural Resources, Subcommittee on Energy and Mineral Resources
November 19, 2014

Dr. Charles Mandeville
Volcano Hazards Program Coordinator, U.S. Geological Survey
Mr. Tom Drean
Director and State Geologist, Wyoming State Geological Survey
Mr. Gordon Ito
Insurance Commissioner, State of Hawaii
Dr. Shanaka de Silva
Professor of Geology and Geophysics, College of Earth, Ocean, and Atmospheric Sciences, Oregon State University
Mr. Darryl Oliviera


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