Tag Archives: Volcano

A volcano is a mountain that opens downward to a reservoir of molten rock below the surface of the Earth (or any other planetary-mass object). It allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Unlike most mountains, which are pushed up from below, volcanoes are vents through which molten rock escapes to the earth’s surface. When pressure from gases within the molten rock becomes too great, an eruption occurs. Eruptions can be quiet or explosive. There may be lava flows, flattened landscapes, poisonous gases, and flying rock and ash that can sometimes travel hundreds of miles downwind.

Because of their intense heat, lava flows are great fire hazards. Lava flows destroy everything in their path, but most move slowly enough that people can move out of the way.

Fresh volcanic ash, made of pulverized rock, can be abrasive, acidic, gritty, gassy and odorous. While not immediately dangerous to most adults, the acidic gas and ash can cause lung damage to small infants, to older adults and to those suffering from severe respiratory illnesses. Volcanic ash also can damage machinery, including engines and electrical equipment. Ash accumulations mixed with water become heavy and can collapse roofs. Volcanic ash can affect people hundreds of miles away from the cone of a volcano.

Sideways directed volcanic explosions, known as “lateral blasts,” can shoot large pieces of rock at very high speeds for several miles. These explosions can kill by impact, burial or heat. They have been known to knock down entire forests.

Volcanic eruptions can be accompanied by other natural hazards, including earthquakes, mudflows and flash floods, rock falls and landslides, acid rain, fire, and (under special conditions) tsunamis.

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Amazing footage shows a boat speeding away as Stromboli volcano erupts

On August 28, Stromboli volcano in Italy woke up a second time in this summer. Tourists decided to ride a boat near the erupting volcano – but the journey turned out to be “fun”: they had to escape from the wave of pyroclastic flow. The eruption did not lead to casualties and destruction, but the tourists got really scared.

In fact, it was a really dangerous act. The pyroclastic flow is what makes composite volcanoes like Stromboli so deadly.

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What kills you when a volcano erupts? It’s not what you think

The blockbuster movie Jurassic World: Fallen Kingdom (2018) involves more than just dinosaurs wreaking havoc. Humans are sent in to rescue some prehistoric critters on the volcanic island of Isla Nublar, and chaos soon begins. The volcano erupts, and everyone runs away as a roiling cloud called a pyroclastic flow approaches. At one point the main character disappears into the cloud. Luckily, some dinosaurs and humans in a strange glass ball fall over a cliff into the sea, and our hero splashes in not long after.

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The exact moment of Stromboli Eruption filmed in a sailboat

Mount Stromboli, one of the three active volcanoes in Italy (others being Mount Etna on Sicily – continuous activity, and Mount Vesuvius, near Naples – last erupted in 1944), has been in almost continuous eruption for the past 2,000 years. The last eruption took place on 3 July 2019. The exact moment of the event has been filmed in a sailboat.

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50 Interesting Facts About Earth

One of the most surprising facts about the Earth is how we easily forget that what an amazing and interesting planet we live on. As Carl Sagan pointed out, “It’s home, it’s us”. It is the only world known planet to support an atmosphere with free oxygen, liquid water on the surface, and, perhaps this is the most important amazing, life. Here are 50 interesting facts about Earth.

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Mount Etna is sliding into the sea

Mount Etna, Europe’s most active volcano (also one of the most active volcanoes in the world) is sliding into the Ionian Sea at rates of centimeters per year. If part of it falls into the sea, it could create horrible mega-tsunamis that would devastate the eastern Mediterranean shores.

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Kliuchevskoi Volcano from Space (NASA Image)

During the STS-68 mission (September 30-October 11, 1994), the crewmembers of Space Shuttle Endeavour used a 70 mm camera to photograph Klyuchevskaya Sopka (also known as Kliuchevskoi), a stratovolcano, the highest mountain on the Kamchatka Peninsula of Russia and the highest active volcano of Eurasia. The eruption was new when this photo was taken. It was photographed from 115 nautical miles (213 kilometers) above Earth.

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Watch: Time-lapse of an Island Forming in Tonga

In December 2014, an underwater volcano has made a new island with a 120-meter (400-foot) summit in the South Pacific, between two older islands (Hunga Tonga and Hunga Ha’apai) in the kingdom of Tonga. NASA satellites captured the amazing process.

On December 19, 2014, Hunga Tonga-Hunga Ha’apai, a volcano located about 30 kilometers (19 miles) south-southeast of Fonuafo’ou (also known as Falcon Island) in the kingdom of Tonga began erupting. The nearby tourists filmed the huge explosion. The eruption continued into 2015. On January 11, 2015, a tall ash cloud rising 9 kilometers (30,000 feet) into the sky, causing a number of other flights between New Zealand and Tonga were canceled. By January 16, when the plume cleared and the ash settled, a new island had been formed by the explosion. The new island also called Hunga Tonga-Hunga Ha’apai.

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10 Recently Lost Natural Wonders

The Earth is always changing. “The only thing that is constant is change, as Heraclitus (c. 535 – c. 475 BC) the pre-Socratic Greek philosopher once said. Unfortunately, things do not always happen the way we would have wanted. Here are 10 recently lost natural wonders that have been disappeared in recent centuries or even decades.

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