Taxonomy term

monitoring

Plumbing Masaya's lava lake

In recent years, volcanic activity at Nicaragua’s Masaya Volcano has been relatively benign, with small eruptive episodes occasionally producing a lava lake in a summit crater that has become one of the country’s top tourist attractions.

24 Jul 2018

Hazards in paradise: Indonesia prepares for natural disasters

Indonesia is a lushly beautiful and tectonically active country that is prone to natural disasters, including eruptions, earthquakes, tsunamis, fires, floods, tornadoes and landslides. What is the country doing to monitor and prepare for such hazards and are those efforts working?

06 Jul 2018

Rolling thunder portends remote eruptions

The logistics of monitoring volcanoes located in remote regions, such as Alaska’s Fox Islands, can be prohibitive — but monitoring is necessary, as ash clouds billowing from even far-flung volcanoes can make their way into airplane flight paths. Researchers are now proposing an acoustic warning system to detect volcanic ash clouds that would rely on listening for the thunderclaps that often herald these eruptions.

23 Jun 2018

Measuring earthquakes using fiber-optic cables

Fiber-optic cables crisscross the world, ferrying digital data and enabling internet access and telecommunication. In a new study, published in Geophysical Research Letters, researchers tested whether fiber-optic cables can also be used to detect and measure earthquakes.

23 Mar 2018

Benchmarks: November 13, 1985: Nevado del Ruiz eruption triggers deadly lahars

On Nov. 13, 1985, at a little after 9 p.m. local time, Nevado del Ruiz, a volcano about 130 kilometers from Colombia’s capital city of Bogotá, erupted, spewing a violent mix of hot ash and lava into the atmosphere. Less than three hours later, the earth rumbled as mudflows towering nearly 30 meters high swept through the countryside, several villages and eventually the town of Armero, where it killed 70 percent of the town’s residents. All-told, these mudflows, called lahars, killed more than 23,000 people.

13 Nov 2016

Observers at the edge of the ice: Smaller, cheaper machines can safely go where humans can't

Glaciologists want to get as close to ice as possible, but safety is a concern. Enter drones, automated kayaks and disposable remote ice-monitoring devices.
28 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

Benchmarks: May 8, 1902: The deadly eruption of Mount Pelée

At the turn of the 20th century, the town of St. Pierre was known as the “Paris of the Caribbean.” Nestled into the northwest coast of the French island of Martinique, it boasted a bustling harbor where ships hauled away precious loads of sugar and rum, and it had usurped the official capital — Fort-de-France — as the colony’s cultural center. But St. Pierre had a problem: it lay in the shadow of a massive volcano.

 
08 May 2015

Beyond the bomb: The world's nuclear watchdog expands its science

The Comprehensive Nuclear-Test-Ban Treaty Organization uses a vast array of scientific instruments deployed around the world to detect evidence of rogue nuclear weapons tests. Now, they're using the collected data for other types of science as well.

27 Apr 2015

On-site inspections

In the event that the CTBT enters into force, a third element of the CTBTO's verification regime — in addition to the IMS and IDC — would come into play: on-site inspections (OSI). Given potential evidence of a nuclear test, member states can call for an inspection of the suspected area as a final verification measure.

 
27 Apr 2015

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