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Volcano Web Shorts 3: Seismology

3 minutes

(Describer) Title: USGS – Science for a changing world

(Describer) Quick scenes show work at laboratories and footage of giant plumes of ash rising from a volcano.

(Describer) Waves and colors are reviewed on many computer screens. Title: Volcano Web Shorts Number 3 – Seismology

My name is Seth Moran. I'm a volcano seismologist, and I work for the U.S. Geological Survey at the Cascades Volcano Observatory. One of the important parts of this job is satisfying the USGS's mission of mitigating hazards, mitigating the effects of hazards. One way we do that is to provide warning to folks in harms way or near volcanos that might be impacted. The volcanos are magmas moving through the earth. It makes noise. It breaks rock, it moves the volcano. Almost always there's seismic unrest. That's a part of that.

(Describer) A needle drawing waves starts shaking violently.

The job of the volcano seismic network is to be able to detect all the possible signs and symptoms that might be indicating magma moving towards the surface and getting closer to eruption. One tool of volcano seismology is the seismic network. We need to have seismometers in the field recording the signs and symptoms of the volcano that might be restless. A seismic network typically consists of anywhere between one and twenty seismic sensors. One clear lesson over the last 20-30 years is the more sensors the better. That gives you more capabilities to better interpret seismic signals. Those field seismometers are attached to radio systems beaming the data to our offices here or to our partners at the Pacific Northwest Seismic Network at the University of Washington. One exciting thing about working at an observatory is you have folks with different specialties-- geologists, hydrologists, geophysicists, geochemists all coming together, speaking a common language, which is volcano, and bringing their expertise to bear.

Funding to purchase and make this educational production

(Describer) Titles: A production of USGS Volcano Hazards Program, USGS Office of Communications and Publishing. Funding to purchase and make this educational program accessible was provided by the U.S. Department of Education. Contact the Department of Education by telephone at 1-800-USA-LEARN, or online at www.ed.gov.

accessible was provided by the U.S. Department of Education:

PH: 1-800-USA-LEARN (V) or WEB: www.ed.gov.

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The United States Geological Survey (USGS) volcano seismologist, Seth Moran, describes how seismology and seismic networks are used to mitigate volcanic hazards.

Media Details

Runtime: 3 minutes

Volcano Web Shorts
Episode 1
3 minutes
Grade Level: 9 - 12
Volcano Web Shorts
Episode 2
4 minutes
Grade Level: 10 - 12
Volcano Web Shorts
Episode 3
3 minutes
Grade Level: 10 - 12
Volcano Web Shorts
Episode 4
4 minutes
Grade Level: 9 - 12
Volcano Web Shorts
Episode 5
3 minutes
Grade Level: 9 - 12
Volcano Web Shorts
Episode 6
3 minutes
Grade Level: 10 - 12