The MagmaticallyTriggered Slow Earthquake at Kilauea Volcano, Hawaii - PowerPoint PPT Presentation
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The MagmaticallyTriggered Slow Earthquake at Kilauea Volcano, Hawaii
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Title: The MagmaticallyTriggered Slow Earthquake at Kilauea Volcano, Hawaii
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The MagmaticallyTriggered Slow Earthquake at
Kilauea Volcano, Hawaii
- By Dani Rosengrant
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Kilauea Volcano
- Mt. Kilauea is located on the big island of
Hawaii - It is the youngest volcano on the big island and
has its own magma-plumbing system - It is 1,277 meters/4,190 feet above sea level
- Mt. Kilauea is a shield volcanoits eruptions
are slow and peaceful. - It began erupting in 1983 and since then has
erupted about 61 times
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What created the volcano?
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Why was there an earthquake?
- There was a shift of magma beneath the surface.
- Magma escaped from a reservoir beneath the summit
and flowed into a dike in the east rift zone. - This extended the rift zone by almost 1 meter.
- The new dike formation caused what scientists
call a slow earthquake
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What exactly is a slow earthquake?
- Occurs when a fault ruptures too slowly to create
any tremors that can be felt. - Slow earthquakes have occurred periodically
around Kilauea before. - These eruptions typically have a magnitude of
approx. 5.5-5.7 on the richter scale.
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Why this is important
- Slow earthquakes are a recent scientific
discovery because they are very difficult to
detect and have gone unnoticed for centuries. - Due to breakthroughs in earthquake detection
technology researchers have been able to study
them. However, these new developments have only
taken place over the past 10 or so years. - Scientists are still uncertain about their
relation to other earthquakes, however they
believe that by understanding how they are
generated and triggered researchers can better
understand how predictable earthquakes are. - They also believe that the slow earthquake at
Kilauea is an example of how magmatismand
earthquake faulting can be connected
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Sources
- http//hvo.wr.usgs.gov/kilauea/
- http//www.cartage.org.lb/en/themes/sciences/earth
science/Geology/Earth/StoryPlateTectonics/PlateTec
tonics/Hotspots/hot_spot.gif - http//www.withfriendship.com/user/images/226/kila
uea-volcano.jpg - http//www.brightsurf.com/news/headlines/39911/Mag
matically_triggered_slow_earthquake_discovered_at_
Kilauea_Volcano_Hawaii.html
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