Actividade Vulcânica 2018

[luismeteo3]

Krakatau volcano (Indonesia): continuous intense explosions heard 42 km away, off scale seismicity
Thursday Jul 12, 2018 11:39 AM |

11 July 2018 seismographs from Krakatau, showing the incredibly intense seismicity of the volcano's strong explosive eruption (screenshot from video by Andi)

Our Indonesian volcano expedition leader Andi has sent us the below video of the current seismicity of Anak Krakatau: "Krakatau is going crazy ...100 times explosion a day ... very loud could be heard untill Carita 42 km away"
https://www.volcanodiscovery.com/kr...ns-heard-42-km-away-off-scale-seismicity.html

 

[luismeteo3]

Yellowstone:

Safety Concerns Lead To Emergency Closure Near Jenny Lake In Grand Teton National Park

By NPT Staff on July 10th, 2018

A highly popular area near Jenny Lake in Grand Teton National Park in Wyoming has been closed to the public for the immediate future due to concerns over expanding cracks and fissures in a large rock formation, park officials said Tuesday evening.

The National Park Service implemented an emergency closure in the Hidden Falls and Inspiration Point areas on the west side of Jenny Lake for human safety. Some recently expanding cracks and fissures have been identified in a large rock buttress above the Hidden Falls viewing area, a park release said.

"Human safety is our No. 1 priority, and with an abundance of caution we are temporarily closing this area until we can properly assess the situation," said Superintendent David Vela.

Those familiar with the site, specifically park rangers and personnel with Exum Mountain Guides, identified the cracks and fissures and determined the situation to be a possible safety hazard. The notable changes in the rock over the past 24 hours spurred park rangers to implement a temporary closure and initiate a risk assessment with subject-matter experts.

Exum Mountain Guides are relocating their practice school services to another location, and shuttle boat and scenic cruises with Jenny Lake Boating will continue to operate. Visitors are able to ride the boat to the west shore, hike Cascade Canyon or around the lake, and enjoy some areas of the west shore as well as the front country areas of the Jenny Lake Complex.

It is unknown how long the closure at Hidden Falls and Inspiration Point areas will be in place.
https://www.nationalparkstraveler.o...ure-near-jenny-lake-grand-teton-national-park

 

[luismeteo3]

 

[luismeteo3]

 

[luismeteo3]

New eruptive activity at Nishinoshima volcano, Japan

The Japan Meteorological Agency reported a bright spot emerging in Himawari-8 imagery it Nishinoshima on July 12. In addition, a brown smoke was seen rising from near the crater around 12:24 JST, July 12.

The last known eruption of this volcano took place in August 2017.

The island is the summit of a massive submarine volcano that has prominent satellitic peaks to the S, W, and NE.

https://watchers.news/2018/07/13/new-eruptive-activity-at-nishinoshima-volcano-japan/

 

[luismeteo3]

"Friday Morning 11 am HST Update for July 13th
Joint post with Dane DuPont

No significant advancement of new flow! Overall eruption is in decline and an end could be in sight!

The new lava flow that overtook the warm ponds area the other day does not seem to be advancing today closer to Pohoiki. The ocean plume of this flow also seems a bit smaller today than it was yesterday. It appears that most of the lava from this flow is entering the ocean in one location at the warm ponds, rather than widening the overall flow.

The northern flow by Kapoho also seems to be dying and is declining every day, likely oozing out a remnant of lava from the enormous flow.

An island was observed this morning by air and boat, pretty amazing looking. We aren't quite sure what happened. Will be interesting to hear what USGS has to say about it!

Overall lava levels in the channels are down today again. Last night Andrew Hara reported that main channels were down 5 feet from the top of the channel walls..."

Photos from yesterday

 

[luismeteo3]

Morning Update - 8:15am (7/14/2018)

"...Fissure 8 remains. There have been some changes over the last few days of the eruption, however. We at Hawaii Tracker are starting to believe that we have transitioned into a new phase of the eruption. A phase that is less consistent, much more volatile, and harder to predict. The pressure that helps feed Fissure 8 is down, fountain heights are down, volume is still in question. But the biggest change is the surges of lava from Fissure 8 following a collapse/explosion event at Halema’ma’u. These surges have become more easily identifiable in this new phase of the eruption, and pose additional risks...

This latest surge phase comes with added risks associated with the less consistent behavior. Breakouts and overflows are a big concern during the surges. Even if we are correct, and activity from Fissure 8 is waning, the added unpredictability creates additional cause for concern for residents."

 

[lserpa]

Morning Update - 8:15am (7/14/2018)

"...Fissure 8 remains. There have been some changes over the last few days of the eruption, however. We at Hawaii Tracker are starting to believe that we have transitioned into a new phase of the eruption. A phase that is less consistent, much more volatile, and harder to predict. The pressure that helps feed Fissure 8 is down, fountain heights are down, volume is still in question. But the biggest change is the surges of lava from Fissure 8 following a collapse/explosion event at Halema’ma’u. These surges have become more easily identifiable in this new phase of the eruption, and pose additional risks...

This latest surge phase comes with added risks associated with the less consistent behavior. Breakouts and overflows are a big concern during the surges. Even if we are correct, and activity from Fissure 8 is waning, the added unpredictability creates additional cause for concern for residents."

É verdade, embora o fluxo da falha n°8 esteja mais reduzido, começam a surgir alguns blocos sólidos no rio de lava, com isso tem havido alguns galgamentos das margens criando alguns “overflows” e também novas áreas cobertas de lava. A fissura 22 também surpreende, surgindo pequenos fluxos com uma ou duas centenas de metros.



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[luismeteo3]

 

[fablept]

23 injured when lava bomb hits Hawaii tour boat

https://edition-m.cnn.com/2018/07/16/us/hawaii-lava-bomb-boat-12-injured/index.html

 

[fablept]

Video de uma pessoa que se encontrava no barco, mesmo muita sorte que ninguém morreu.
https://m.facebook.com/story.php?story_fbid=1916106295120057&id=100001621147320&_rdr

 

[luismeteo3]

 

[luismeteo3]

 

[luismeteo3]

 

[lserpa]

Hello pessoal.

Relativamente ao acidente ocorrido no Havai com um barco de turistas, enquanto estes observavam a entrada oceânica, o skipper estava a menos de 50 metros da entrada de lava. A lei prevê uma distância de 300 metros, salvo algumas exceções concedidas a alguns skippers até aos 50metros.

Fato curioso, estas tours custam cerca de 250usd por cabeça!!



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