Volcanic Plume Above Mount St. Helens Detected with GPS

Details Volcanic Plume Above Mount St. Helens Detected with GPS Volcanic Plume Above Mount St. Helens Detected with GPS

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005eostr..86..277h&link_type=abstract

Eos, Transactions American Geophysical Union, Volume 86, Issue 30, p. 277-281

Mathematics

Logic

Volcanology: Explosive Volcanism, Mineralogy And Petrology: Fluid Flow, Planetary Sciences: Solid Surface Planets: Instruments And Techniques

Scientific paper

Eruptions can produce not only flows of incandescent material along the slopes of a volcano but also ash plumes in the troposphere [Sparks et al., 1997] that can threaten aircraft flying in the vicinity [Fisher et al., 1997]. To protect aircraft, passengers, and crews, the International Civil Aviation Organization and the World Meteorological Organization created eight Volcanic Ash Advisory Centers (VAAC, http://www.ssd.noaa.gov/VAAC/vaac.html) around the globe with the goal of tracking volcanic plumes and releasing eruption alerts to airports, pilots, and companies. Currently, the VAAC monitoring system is based mostly on the monitoring systems of any local volcano observatories and on real-time monitoring of data acquired by meteorological satellites. In the case of the 18 August 2000 eruption of the Miyakejima volcano in Japan, Houlié et al. [2005] showed that the Global Positioning System(GPS) might be used as an additional tool for monitoring volcanic plumes. The present article indicates that the 9 March 2005 eruption of Mount St. Helens, Washington, also produced detectable anomalies in GPS data.>

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