Taxonomy term

volcano

Travels in Geology: Guatemala's Volcan Pacaya: A feast for the senses

Guatemala is home to 22 volcanoes, several of which visitors can climb. The most popular is the active Volcán Pacaya; the hike is relatively easy, the views spectacular, and visitors can roast marshmallows near the summit. 

28 Sep 2016

Getting there and getting around Guatemala's Volcan Pacaya

Shops, restaurants and hotels line Antigua’s famed cobblestone streets. Agua Volcano looms behind Santa Catalina Arch, which originally allowed nuns to cross from one side of the Santa Catalina convent to the other without going outside. Credit: ©iStockphoto.com/loca4motion.

 

 

28 Sep 2016

Bubble accumulation could explain massive volcanic sulfur releases

The spectacular 1815 eruption of Indonesia’s Mount Tambora spewed large amounts of sulfur gases into the atmosphere, which formed fine sulfur-rich particles that blocked sunlight and lowered global temperatures by more than half a degree Celsius, causing famine and death on a global scale.

23 Aug 2016

Helium escape may help predict volcanic activity

Europe’s tallest active volcano, Mount Etna, rises 3,300 meters above the island of Sicily, which lies just off the coast of Italy’s “toe.” Within 100 kilometers of more than 3 million people, Etna frequently rumbles and occasionally belches. As recently as last May, explosions accompanied lava fountains and ash erupted from one of the volcano’s craters over several days. This was just one of many eruptions in a long line of events, with historical documents dating similar outbursts back to 1500 B.C. Scientists cannot pinpoint when Etna will next erupt, but in a new study in Geology, researchers have identified a clue that may help them better understand how the volcano’s inner plumbing system changes just prior to an eruption.

17 Aug 2016

Researchers profile magma chamber beneath North Korean volcano

An enigmatic volcano straddling the border between North Korea and China has been investigated for the first time by an international team of seismologists. In 2013, researchers installed seismometers near the volcano — called Mount Paektu in North Korea and Changbaishan in China — to determine what was going on beneath the surface. The team’s results, detailed in a new study published in Science Advances, reveal a potential source of magma that may have created one of the largest volcanic eruptions in the last few thousand years — and that could cause the volcano to erupt again.

22 Jul 2016

Benchmarks: July 1, 1912: Hawaiian Volcano Observatory officially becomes the first of its kind in U.S.

Living on the fringe of an active volcano in Hawaii is a precarious venture. Because Hawaii’s shield volcanoes aren’t prone to explosive activity, you’re typically not threatened by violent eruptions such as would occur at Mount St. Helens, for example. On the other hand, the slow-moving, unpredictable lava flows can still overtake your home, even if it has avoided years of previous eruptions. 
 
02 Jul 2012

Benchmarks: June 10, 1886: New Zealand’s Mount Tarawera erupts

On June 10, 1886, Mount Tarawera on New Zealand’s North Island erupted catastrophically, killing more than 100 people. With few warning signals, the explosive basaltic eruption caught many people by surprise as it rocked the mountain, forming fissures that extended for 17 kilometers into the adjacent Lake Rotomahana and Waimangu Valley. 
 
04 Jun 2012

Travels in Geology: Climbing Mount Kilimanjaro: From parasitic cones to equatorial glaciers

Tanzania’s Mount Kilimanjaro is the world’s tallest mountain that climbers can reach without technical means. The author decided to try it for herself, and brought back a lifetime of memories and dozens of photos of parasitic cones, equatorial glaciers, lava outcrops, volcanic vents and scenery to die for.

02 Apr 2010

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