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Posts treating: "volcano science and news blog"

Wednesday, 16 May 2012

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Large Quake Swarm Under Herðubreið in Iceland 

Volcano Science And News Blog [2012-05-16 20:50:00]  recommend  recommend this post  (146 visits) info
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A large swarm of earthquakes is occurring just NE of the Askja caldera in Iceland. This began sometime yesterday and continues to the time of this writing (see below pic). It has recently been noted that Askja caldera was strangely ice free during the cold months, with the water still quite cold, yet unfrozen. Some theories about this pointed to possible underwater fumeroles, to chemical changes, and other theories, but as of yet nobody can fully explain why. Picture graph from Iceland [...]

Katla Reported To Be Melting Ice 

Volcano Science And News Blog [2012-05-14 19:17:00]  recommend  recommend this post  (749 visits) info
A report from the Iceland Volcano and Earthquake Blog by Jon Frimann seems to suggest that Katla volcano in Iceland has been experiencing some ice melt and creating some jökulhlaups (glacier outburst floods). Jon suggests that a geologist who is close to the monitoring efforts on the volcano is recording harmonic tremor since April 28th, which suggests magma is on the move, and possibly making contact with the base of the glacier. The months of April and May have so far been pretty [...]

The Desert And A Tragic Occurrence 

Volcano Science And News Blog [2012-05-08 21:10:00]  recommend  recommend this post  (107 visits) info
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While I was out in Anza-Borrego State Park this weekend, I was able to view an incredible landscape that is as harsh as it is beautiful. We hiked around the park and visited the desert palms in a canyon, as well as taking an opportunity to look at the various rocks and minerals in the area. I was highly surprised to find evidence of past volcanism pretty much everywhere, from small red cinder rocks from a nearby dead volcano known as Table Mountain, to blocks of andesite in areas [...]

Japan's Iwo Jima (Ioto) Volcano Showing Signs of Activity 

Volcano Science And News Blog [2012-05-04 19:10:00]  recommend  recommend this post  (146 visits) info
A report from Japan's Meteorological Agency indicates new activity at the famed WWII island of Iwo-Jima (Ioto). The report details that a new fumerole has opened, and there was water discoloration in the water near the island. Famed for its role in WWII when US forces were striking at Japan, most people don't realize it is actually an active volcano! While Iwo-Jima didn't have explosions during the war (without the aid of bombs and artillery), the island constantly fumes with acidic [...]

New Info On Yellowstone Suggests "Super Eruption" Was Two Smaller Eruptions 

Volcano Science And News Blog [2012-04-30 20:28:00]  recommend  recommend this post  (169 visits) info
Yellowstone volcano has long thought to have had a large super eruption over 2 million years ago, but new evidence is suggesting that while 2 million years ago Yellowstone DID erupt with a VEI 7 or 8 eruption, it was not as big as once thought, and was followed 6,000 years later by a smaller eruption. The result was an ash layer that appeared to be one layer but was actually two. This suggests that Yellowstone is NOT as powerful as once thought, but is more active.  The study revealed [...]

Alaska's Mt. Iliamna Volcano Rumbles Away 

Volcano Science And News Blog [2012-04-27 19:19:00]  recommend  recommend this post  (669 visits) info
The heightened seismicity at Alaska's mt. Iliamna continues, and today the seismicity is stronger than it has been. At around 6am UTC seismicity increased and is ongoing at this time. This probably indicates further intrusion as the seismicity does appear to be harmonic tremor. Mt. Iliamna has not erupted in historical time, but the mountain displays vigorous fumeroles at the summit and flank. A previous visit by AVO scientists revealed heightened temperatures and gas emissions from the [...]

My Beef With a Wired.com Article [Opinion piece] 

Volcano Science And News Blog [2012-04-24 00:13:00]  recommend  recommend this post  (739 visits) info
Recently I happened upon an interesting article (or rant) on Wired.com's Eruptions blog, where the author, Erik Clemetti had challenged readers to describe or otherwise link the technology that would be required to successfully predict an imminent volcanic eruption. You can find my comments in the comments section of the article, but I was immediately like one of those kids who KNOWS the answer to the question in any school class raising his hand "Pick me! Pick me!". Recently I started [...]

El Hierro Activity Still Apparent, Government Pretending It's Not There 

Volcano Science And News Blog [2012-04-23 19:15:00]  recommend  recommend this post  (150 visits) info
The Spanish government at El Hierro is quickly trying to sweep the eruption under the rug. Even while Earthquake-report.com's Joke Volta continues to photograph clear evidence of underwater activity, underwater video showing degassing and small amounts of erupting lava, and even while seismographs continually record weak volcanic tremor, the government has insisted that the eruption is over. And to prove just how serious they are, they are lowing ALL alert levels, including near the eruption [...]

Island of Fogo Is Having Volcanic Tremor 

Volcano Science And News Blog [2012-04-23 18:49:00]  recommend  recommend this post  (206 visits) info

 Quaternary
The island of Fogo looks like something out of a sci fi fantasy movie. A massive island inlayed by a large caldera, with a spire-like volcanic cone in the center that looms high over the tropical landscape. Below the peak of Fogo (Pico do Fogo) lies a paved over, barren landscape, surprisingly home to houses and facilities built atop fresh lava flows. Fogo was one of the first volcanoes that fascinated me, given its striking appearance and remote location. To visit this volcano, for [...]

Is Geothermal Drilling A Potential Hazard? 

Volcano Science And News Blog [2012-04-20 20:35:00]  recommend  recommend this post  (723 visits) info
News has recently surfaced that a 5.2 earthquake in the heart of Oklahoma was caused by drilling of waste water disposal wells that went some 1.5 miles underground. This apparently resulted in underwater channels opening up, cracks in the rock, and eventually slippage of an old fault line that had some tension but was rather stable before the water lubed up the fractures and produced a large earthquake. This and other stories have been made apparent lately, and with the USGS real-time plugin [...]

Mexico Raises Popocatepetl Alert Level 

Volcano Science And News Blog [2012-04-17 20:02:00]  recommend  recommend this post  (150 visits) info
One of Mexico's most active volcanoes, Popocatepetl (Smoking Mountain) is showing signs of increased unrest, prompting the local government to raise the alert level to 3 (out of a max of 4), and instituting an exclusion zone of up to 7 miles from the summit. After 40 minutes of volcanic tremor, and some minor exhalations of ash and steam, the volcanoes activity has been steadily increasing over the past couple of days. Popocatepetl's last major eruption in 2000 caused widespread [...]

Cascades Volcanoes, Sleeping Giants 

Volcano Science And News Blog [2012-04-10 20:13:00]  recommend  recommend this post  (203 visits) info
The entire West Coast of the United States, and Canada are strewn with large stratovolcanoes. From Mt. Shasta, to Mt. St Helens, to Ranier, to Glacier Peak, the West Coast is literally pockmarked with large, explosive, and potentially dangerous volcanoes. The Cascades Volcano Observatory (CVO), and the newly minted California Volcano Observatory (CalVO), are tasked with monitoring these massive volcanoes that are near heavily populated centers. With so many volcanoes on the West Coast, it is [...]

Askja Volcano in Iceland Showing Signs of Warming 

Volcano Science And News Blog [2012-04-06 20:24:00]  recommend  recommend this post  (149 visits) info
Several articles and local bloggers have started to chatter about changes at Askja volcano in Iceland, a volcano with a powerful and violent past. In 1875, Askja erupted in one of Iceland's largest historical eruptions, producing a small caldera now filled by Öskjuvatn lake. Askja has erupted during the 20th century (1900's) producing fissures and lava flows outside of the Öskjuvatn lake, but has remained mostly dormant in recent decades.The volcano is showing signs of increased [...]

Shallow Quake Swarm at Joshua Tree East Of Palm Springs 

Volcano Science And News Blog [2012-04-04 20:50:00]  recommend  recommend this post  (202 visits) info
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There is absolutely nothing, and no information on this on the web, so I thought I might bring it into the light for scrutiny. There is a continuing quake swarm occurring in Joshua Tree National Park, about 35 miles East of Palm Springs, CA that is beginning to look quite intriguing. The range of depth is from 8km to less than 1km, and about 2 quakes are occurring every hour. The strongest quakes were two mag 3.5 tremblors that were lightly felt in Palm Springs and surrounding towns.The area [...]

Video from El Hierro's Underwater Volcano Released 

Volcano Science And News Blog [2012-04-03 20:19:00]  recommend  recommend this post  (736 visits) info
Video of the actual volcano underwater off the coast of La Restinga, El Hierro in the Canary Islands (Spain) shows a degassing and slowly erupting cone. The video, published by IGN (Institutio Geografico National) shows in very clear water, the surface of the vent degassing. It is the first video published by scientists that clearly shows what is actually happening under water, giving us our fist actual observation of the cone itself. The eruption at El Hierro was declared [...]

Alaska's Cleveland Volcano Back To Alert Level "Orange" 

Volcano Science And News Blog [2012-04-03 18:49:00]  recommend  recommend this post  (149 visits) info
AVO has again raised the alert level at Cleveland volcano due to the resurgence of yet another lava dome at the summit. Two have been emplaced slowly, and each time the dome has either exploded or collapsed in two very minor eruptions. The slowly erupting volcano has been going back and forth between "Yellow" and "Orange" aviation codes during the recent months. Typically after the dome collapses, AVO has lowered the alert level thinking that the volcano may have stopped erupting, but this has [...]

Earthquake Swarm and Possible Dike Intrusion at Krísuvík Volcano in Iceland 

Volcano Science And News Blog [2012-04-03 01:10:00]  recommend  1 recommendations  (790 visits) info
There is not a whole lot going on in the world in respect to new eruptions or volcanoes at this moment, however Iceland is always fascinating to watch. Today there was a swarm of quakes just SW of the Kleifarvatn lake, just south of the epicenter of Krísuvík volcano. The quakes were shallow, weak, and numerous, but the area is highly active, much like most of Iceland. Most of the quakes registered below a 1.0 magnitude, but were clearly seen on the many Icelandic seismic sensors. The [...]

Another 6.3 Quake Hits Mexico 

Volcano Science And News Blog [2012-04-02 21:24:00]  recommend  recommend this post  (162 visits) info
A magnitude 6.3 quake struck the Oaxaca region of Mexico today, near the area where the large mag 7.6 quake hit a couple weeks ago. This is the largest aftershock thus far from the 7.6 tremblor. Housing and property were damaged by the large quake, however injuries and fatalities were thankfully very low due to citizens being well prepared for evacuating. Mexico, like the West Coast of the US, is part of the Pacific Ring of Fire, an arc of subduction faults and volcanoes spanning the rim of [...]

New Info On Bolivian Volcano Uturuncu Indicates Uplift Is New 

Volcano Science And News Blog [2012-03-28 19:54:00]  recommend  recommend this post  (782 visits) info
The recently "awakened" supervolcano in Bolivia, Uturuncu, may have actually awakened just recently, according to new data. The data suggests that the volcano began re-inflating quite recently. In fact, a report on VolcanoDiscovery.com suggests that the uplift began as recently as 1992, according to sediment uplift data. This suggests that not only is Uturuncu awakening, it suggests that Uturuncu is quickly building up its massive magma reservoir and actually lead to activity in the [...]

AVO Lowers Alert For Cleveland Volcano To "Yellow" 

Volcano Science And News Blog [2012-03-26 21:51:00]  recommend  recommend this post  (718 visits) info
The slowly erupting stratovolcano in Alaska, Mt. Cleveland, has been lowered to level "Yellow/Advisory" with AVO geologists stating "No further explosions have been detected at Cleveland since March 13, and we have no evidence that lava-dome growth has renewed since then. Therefore, we are lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY." Mt. Cleveland had been experiencing slow lava dome growth for the better part of a year, with a couple of collapses and [...]
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