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Tracking a hot spot
May 18, 2007Using a state-of-the-art satellite imagery technique, researchers are able to more precisely predict volcanic activity, bringing them steps closer to understanding where an eruption may occur. A new research study, titled "Stress Control of Deep Rift Intrusion at Mauna Loa Volcano, Hawaii," being published in the May 18 issue of the journal Science uses satellite imagery to study volcanic activity at Mauna Loa on the Big Island of Hawaii. With this new technique, researchers can more precisely forecast locations of volcanic activity -- providing critical information to improve warning systems and hazard assessment of populated areas surrounding one of the world's most naturally dangerous ecosystems, volcanoes.
A team of researchers, lead by Dr. Falk Amelung, a geology and geophysics assistant professor at the University of Miami Rosenstiel School of Marine and Atmospheric Science, used interferometric synthetic aperture radar (InSAR) from 2002 to 2005 to obtain images of the ground deformation associated with volcanic activity. Researchers were able to see distinct patterns of magma activity associated with rift zones, long narrow fractures in the earth's crust from which lava flows out. Magma pathways were unclamped by past eruptions and earthquakes, leaving a place for the magma to enter. Magma accumulates in the rift zones, pushed the flanks apart, creating stress in the area that ultimately erupts.
Researchers are studying Mauna Loa because it's the largest and one of the most active volcanoes on Earth. The main volcanic hazards, lava flows and flank collapse, can pose a significant hazard to populated areas. Flank collapse, which can trigger tsunamis, creates an additional hazard to these increasingly populated areas of volcano flanks, like Mauna Loa volcano. This research technique can be applied to other active volcanoes, Mt. Etna in Italy, Piton de la Fournaise on Reunion Island, Kilauea in Hawaii, and many others, including in Central America.
University of Miami Rosenstiel School of Marine & Atmospheric Science
Volcanic Activity Current Events and Volcanic Activity News RSSStudy uses satellite imagery to identify active magma systems in East Africa's Rift Valley
A team from the University of Miami, University of El Paso and University of Rochester have employed Interferometric Synthetic Aperture Radar (InSAR) images compiled over a decade to study volcanic activity in the African Rift. The study, published in the November issue of Geology, studies the section of the rift in Kenya.
Rice U. lab leads hunt for new zeolites
In all the world, there are about 200 types of zeolite, a compound of silicon, aluminum and oxygen that gives civilization such things as laundry detergent, kitty litter and gasoline. But thanks to computations by Rice University professor Michael Deem and his colleagues, it appears there are -- or could be -- more types of zeolites than once thought.
Clemson researchers say algae key to mass extinctionss
Algae, not asteroids, were the key to the end of the dinosaurs, say two Clemson University researchers. Geologist James W. Castle and ecotoxicologist John H. Rodgers have published findings that toxin producing algae were a deadly factor in mass extinctions millions of years ago.
Scientists measure the rate of ascent of volcanic magma
Plinian volcanic eruptions are notoriously destructive. These very powerful eruptions often occur after long periods of quiescence and are preceded by relatively short periods of seismic restiveness.
The greenhouse gas that saved the world
When Planet Earth was just cooling down from its fiery creation, the sun was faint and young. So faint that it should not have been able to keep the oceans of earth from freezing. But fortunately for the creation of life, water was kept liquid on our young planet.
Mars, methane and mysteries
Mars may not be as dormant as scientists once thought. The 2004 discovery of methane means that either there is life on Mars, or that volcanic activity continues to generate heat below the martian surface.
Surface features on Titan form like Earth's, but with a frigid twist
"It is really surprising how closely Titan's surface resembles Earth's," says Rosaly Lopes, a planetary geologist at the Jet Propulsion Laboratory (JPL) in Pasadena, California, who is presenting the results on Friday, 7 August.
New map hints at Venus's wet, volcanic past
Venus Express has charted the first map of Venus's southern hemisphere at infrared wavelengths. The new map hints that our neighbouring world may once have been more Earth-like, with both, a plate tectonics system and an ocean of water.
New definition could further limit habitable zones around distant suns
As astronomers gaze toward nearby planetary systems in search of life, they are focusing their attention on each system's habitable zone, where heat radiated from the star is just right to keep a planet's water in liquid form.
Magnetic Tornadoes Could Liberate Mercury's Tenuous Atmosphere
As the closest planet to the sun, Mercury is scorching hot, with daytime temperatures of more than 800 degrees Fahrenheit (approximately 450 degrees Celsius).
More Volcanic Activity Current Events and Volcanic Activity News Articles
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Geodetic and Geophysical Effects Associated with Seismic and Volcanic Hazards (Pageoph Topical Volumes) by José Fernandez (Editor) The topics included in this issue deal with many aspects of volcanic and seismic activity, two of the natural hazards of geological origin that have the greatest impact and pose the predominant risk to society. This book comprises eighteen papers, most of which were presented at an international seminar organized and held at the Complutense University of Madrid in October 2001. The papers address geodetic, geophysical and geochemical effects caused by seismic and volcanic activity; monitoring of volcanic and seismic processes using space and terrestrial techniques; complementarity of these techniques; theoretical modelling of volcanic and seismic processes; inverse problem; interpretation of observations; hazards; seismicity patterns and application. |
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Magma: Volcanic Disaster Starring: Xander Berkeley, Amy Jo Johnson, David O'Donnell, George R. Sheffey, Michael Durrell Directed By: Ian Gilmour Also With: Philip von Alvensleben (Producer), Jeffrey Beach (Producer), T.J. Sakasegawa (Producer), Phillip J. Roth (Producer), Paul Joshua Reuben (Writer), Chase Parker (Writer) |
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Volcanic Activity Photographic Poster Print, 24x18 by Art.com Art.com is the world's largest retailer of art prints, posters, photographs, and framed artwork. With our huge selection of over 400,000 prints, you'll easily find the perfect piece for your home, office, or classroom. Our art is printed on quality paper. When you order framed artwork, the piece is built by our team of in-house professionals. Visit our Amazon store today at www.amazon.com/artdotcom to find Special Offers and search for products based on 'Artist Name' and 'Subject Categories' such as Movie, Music, Vintage, TV, Children, Travel, Kitchen, Museum Art, Animals, Floral, Motivational, and Sports. Art.com is dedicated to providing you with high quality products and service by offering you 100% satisfaction guaranteed. We ship internationally to over 80 countries. Decorate your... |
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Volcanic Lungs Part I Khann (Primary Contributor) |
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Earth Science Series: Earthquakes and Volcanoes Also With: Harvey Goodman (Producer) Earth Science Series: Earthquakes and Volcanoes by Harvey Goodman. (First published in 1999. Geared to Middle School.) Spectacular displays of earthquake activity and volcanic power show how these events change the surface of the earth. Plate tectonics, the earth's interior layers and mountain formation are discussed. Geologists, seismologists and volcanologists are shown using seismographs and satellite imaging to predict, analyze and report on these forces. Teacher's guide includes Internet Activities designed to enhance and extend the understanding of earthquakes and volcanos. Running time: 20 minutes. |
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The Surveillance And Prediction Of Volcanic Activity by UNESCO (Publisher) | |
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Redmond Clay Jar By Redmond Trading - 10oz. by Redmond Trading Redmond Clay is an old Home Remedy that generations of people have used for a variety of ailments. Redmond Clays origins are as old as the practice of putting a mud poultice on a bee sting. Geologically Redmond Clay is volcanic ash that was deposited in sea water approximately 150 million years ago. Technically Redmond Clay is a swelling-type sodium bentonite. Redmond Minerals brings this "clay of a thousand uses" to market in its natural state with no additives chemicals or preservatives. The only processing it undergoes is crushing and screening. |
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Cosmos Global Documentaries COCOS ISLAND Directed By: TravelVideoStore.com Also With: TravelVideoStore.com (Producer) |
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Seismics and Your Safety: A Guide to Tremor and Volcanic Activity in the Naples Area by Allied Forces Headquarters (Publisher) | |
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Volcanic Activity Photographic Poster Print, 16x12 by Art.com Art.com is the world's largest retailer of art prints, posters, photographs, and framed artwork. With our huge selection of over 400,000 prints, you'll easily find the perfect piece for your home, office, or classroom. Our art is printed on quality paper. When you order framed artwork, the piece is built by our team of in-house professionals. Visit our Amazon store today at www.amazon.com/artdotcom to find Special Offers and search for products based on 'Artist Name' and 'Subject Categories' such as Movie, Music, Vintage, TV, Children, Travel, Kitchen, Museum Art, Animals, Floral, Motivational, and Sports. Art.com is dedicated to providing you with high quality products and service by offering you 100% satisfaction guaranteed. We ship internationally to over 80 countries. Decorate your... |
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