Mon, 06 Mar 2017 17:35 UTC
Given that the meteorites Lapen and his group studied came from a single ejection site on Mars, they reveal over 2 billion years of stacked lava flows, Lapen said. The discovery could help scientists decipher more about how often volcanoes erupted on Mars, as well as time periods when they were most active.
Lapen explained that the type of volcanic activity that occurs on Mars is called basaltic volcanism, which is similar to the type of volcanism seen, for example, in volcanoes in Hawaii. These types of volcanoes produce fluid lava and are rarely explosive.
But Mars isn't the only extraterrestrial body with volcanoes. Volcanoes—in various forms—are also found on other planets, moons, and even asteroids. Take, for instance, Jupiter's moon Io, which has active volcanoes that spew gas and melted rock, or Venus, which is covered with over 1,000 volcanoes, according to NASA. It's not yet determined whether these venusian volcanoes are active or not.
Thu, 16 Mar 2017 14:58 UTC
Pyroclastic material sent flying like shrapnel hit a group of trekkers.
Etna, Europe's tallest active volcano, has shown lava spouts and ash plumes in recent days.
Comment: Further reading: Is something strange happening deep inside the Earth?
Why are "giant fountains of lava" suddenly pouring out of some of the most dangerous volcanoes on the entire planet, and why are so many long dormant volcanoes suddenly roaring back to life? The spectacular eruption of Mt. Etna in Italy is making headlines all over the world, but it is far from alone. According to Volcano Discovery, 35 major volcanoes either are erupting right now or have just recently erupted, and dozens of others are stirring. So what is causing this upsurge in volcanic activity? Is something strange happening inside the Earth?
Such eruptions are linked with some of the most profound changes in Earth's history. These include the biggest mass extinction, which happened 252 million years ago when volcanoes blanketed Siberia with molten rock and poisonous gases.
"As we go back in time, we're discovering events that are every bit as big," says Richard Ernst, a geologist at Carleton University in Ottawa, Canada, and Tomsk State University in Russia, who led the work. "These are magnificent huge things."
Knowing when and where such eruptions occurred can help geologists to pinpoint ore deposits, reconstruct past supercontinents and understand the birth of planetary crust. Studying this type of volcanic activity on other planets can even reveal clues to the geological history of the early Earth.
Ernst presented the findings this month to an industry consortium that funded the work (see 'Earth's biggest eruptions'). He expects to make the data public by the end of the year, through a map from the Commission for the Geological Map of the World in Paris.
Thu, 09 Mar 2017 14:10 UTC
Residents of the Aleutian Islands are under ash advisory after Bogoslof Island's volcano had its strongest recorded eruption Tuesday night. The National Weather Service warned that the fishing communities could see a trace amount of ash following the powerful eruption.
This isn't the first time the volcano has erupted. Tuesday was the 36th recorded eruption over the last three months, with the next most recent one occurring February 19, CNBC reported. However, the length of the eruption and intensity were unexpected.
"It was the most significant event for the entire eruption," US Geological Survey geologist Kristi Wallace told CNBC.
Thu, 09 Mar 2017 07:24 UTC
Tokyo VAAC said at 03:42 UTC, that an eruption at Bezymianny at 03:00 UTC sent ash up to 10 km (33 000 feet) extending N-NW.
According to satellite data by KVERT, ash plume at the height about 7 km (23 000 feet) a.s.l. drifts for about 112 km (70 miles) to the northwest from the volcano, KVERT said at 05:11 UTC. The width of ash plume is about 14 km (8.7 miles). Strong gas-steam activity of the volcano continues, it said.
Strong ash explosions up to 15 km (49 200 feet) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.
Based on KB GS RAS (Kamchatka Branch of Geophysical Services, Russian Academy of Sciences) data, KVERT noted that seismicity at Bezymianny began to increase on November 18, 2016. The temperature of a thermal anomaly detected in satellite images increased on December 5, and then significantly increased on December 13, which was likely caused by lava-dome extrusion. The Aviation Color Code was raised to Orange.
Wed, 08 Mar 2017 06:40 UTC
"Truly an amazing amount of activity," Kalber said.
Kilauea's current Aviation Color Code is at Orange, Volcano Alert Level is at Watch, AVO reported late March 7.
The episode 61g lava flow from Puʻu ʻŌʻō is entering the ocean at Kamokuna and is feeding surface flows on and above the pali, and on the coastal plain, inland from the ocean entry, but these lava flows pose no threat to nearby communities at this time. The summit is deflating, and the lava lake was 33 m (~108 feet) below the Overlook crater rim on the morning of March 7 (local time).
Summit tremor continues to fluctuate in response to variations in lava lake spattering. Average daily summit sulfur dioxide emission rates were about 3 000 metric tons/day last week, the most recent time when conditions permitted measurements. After a brief increase, seismicity in the upper East Rift Zone has returned to typical levels over the past day, with just a few small earthquakes.
Comment: There has been increased activity at Hawaii's Kilauea volcano in recent months:
- Earthquake swarm rattles Kilauea Volcano, Hawaii
- Hawaii's Kilauea volcano lava 'firehose': 'Never seen anything like it' says scientist (VIDEO)
- Kilauea Volcano's lava lake rises 54 feet to near crater rim in Hawaii
- Lava from Hawaii's Kilauea volcano flows into ocean for first time since 2013
- Pu'u O'o volcano, Hawaii unleashes its largest volume of lava for 500 years
Wed, 08 Mar 2017 18:41 UTC
Mount Vesuvius may be Italy's most infamous volcano, thanks in large part to its cataclysmic eruption in 79 CE, yet Etna is the country's most active. Records document eruptions by the massive volcano dating as far back as 1500 BCE. In the last hundred years alone 73 eruptions have been recorded there.
Etna is an ominous sight on the Sicilian skyline, towering above the city of Catania with a peak some 3,300 metres above sea level. The volcano is the result of the meeting of the European and African tectonic plates, stresses of the continents' collision forcing one under the other and causing a subduction zone.
On 8th March 1669 Etna started rumbling. A series of eruptions over the following weeks would see an estimated 20,000 people killed by the volcano.
Wed, 08 Mar 2017 18:30 UTC
The Alaska Volcano Observatory says Bogoslof (BOH-gohs-lawf) Volcano in the Aleutian Islands started erupting at 10:36 p.m. Tuesday and sent up an ash cloud to 35,000 feet.
The eruption was marked by seismic activity and lightning that subsided about 1:30 a.m. Wednesday.
Ash can harm and stop jet engines. Ash from southwest Alaska volcanos is a threat to airliners operating between North America and Asia when a cloud rises above 20,000 feet.
Comment: See also: Volcanoes are erupting across the planet; 35 currently active
Wed, 08 Mar 2017 08:35 UTC
Wildfires broke out in Eastern Australia and New Zealand while record rainfall inundated Western Australia. Major flooding also hit several South American nations including Chile, Peru and Colombia.
There are at least 30 active volcanoes around the world right now, including a really impressive one in Guatemala. Massive earth cracks opened in Pakistan and Italy.
These are just some of the chaotic events we present in this month's Sott 'Earth Changes' video compilation.
The First News Hawk
Mon, 06 Mar 2017 15:59 UTC
Despite the fact that Mount Etna is the most recent fountain of liquid magma to stand out as truly newsworthy, there are various different emissions happening everywhere throughout the world. There has been news about volcanic eruptions from all over the planet. India's only volcano is dynamic again after having been dormant for 150 years, and four of Iceland's fundamental volcanoes are speculated to erupt soon. As indicated by Volcano Discovery, 35 volcanoes are either as of now ejecting at this moment or just as of late emitted everywhere throughout the world. There are significantly more volcanoes with eruption notices and huge amounts of different volcanoes that are dynamic, which means they could, in fact, emit at any moment.
Comment: Is there something much bigger happening on our planet? Earth Changes and the Human Cosmic Connection: The Secret History of the World - Book 3