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U.S. Geological Survey Fact Sheet 2010-3116

U.S. GEOLOGICAL SURVEY—REDUCING THE RISK FROM VOLCANO HAZARDS

Airborne Volcanic Ash—A Global Threat to Aviation

By Christina A. Neal and Marianne C. Guffanti

Introduction

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The world’s busy air traffic corridors pass over or downwind of hundreds of volcanoes capable of hazardous explosive eruptions. The risk to aviation from volcanic activity is significant—in the United States alone, aircraft carry about 300,000 passengers and hundreds of millions of dollars of cargo near active volcanoes each day. Costly disruption of flight operations in Europe and North America in 2010 in the wake of a moderate-size eruption in Iceland clearly demonstrates how eruptions can have global impacts on the aviation industry. Airborne volcanic ash can be a serious hazard to aviation even hundreds of miles from an eruption. Encounters with high-concentration ash clouds can diminish visibility, damage flight control systems, and cause jet engines to fail. Encounters with low-concentration clouds of volcanic ash and aerosols can accelerate wear on engine and aircraft components, resulting in premature replacement. The U.S. Geological Survey (USGS), in cooperation with national and international partners, is playing a leading role in the international effort to reduce the risk posed to aircraft by volcanic eruptions.

Last modified January 11, 2011
First posted December 27, 2010

  • This report is also available in print from:

    USGS Information Services, Box 25286,
    Federal Center, Denver, CO 80225
    telephone: 888 ASK-USGS; e-mail: infoservices@usgs.gov

For additional information contact:
Alaska Volcano Observatory staff
4210 University Drive
Anchorage, AK 99508
Alaska Volcano Observatory

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Suggested citation:

Neal, C.A., and Guffanti, M.C., 2010, Airborne volcanic ash; a global threat to aviation: U.S. Geological Survey Fact Sheet 2010-3116, 6 p.



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