The volcanic unrest continues: Eruptions of Agung volcano (Indonesia), Anak Krakatau (Indonesia), Mayon volcano (Philippines), White Island (New Zealand), Updates for Kilauea eruption (Hawaii) and Fuego eruption (Guatemala)


The volcanic unrest continues around the world with new eruptions occurring around the world. The latest are the explosions of Agung volcano (Indonesia), Anak Krakatau (Indonesia), Mayon volcano (Philippines), the volcanic unrest of White Island (New Zealand). Finally some updates on the Kilauea eruption (Hawaii) and the Fuego eruption (Guatemala).

Eruption of Agung volcano on July 4, 2018

The seismicity of Agung is dominated by low frequency earthquakes, consistent with an effusion and an open system. The surface activity remains dominated by eruptions and ash emissions.

agung volcano eruption july 2018, volcanic eruption july 2018, volcanic eruption july 2018 video, volcanic eruption july 2018 pictures
gung – ash plume from 04.07.2018 / 12:20 local. By Sudiana Wayan

On July 4, 2018 at 12:20, a plume of ash and gas rose 2,500 meters above the summit. The new eruption lasted about 2 minutes and had an amplitude of 24 mm on the seismogram. In this awesome timelapse recorded at 7 am in Amlapura and from 11:15 – 15:36 in Datah, Karangasem, you can watch the ruptions at 1’24 and 1’50:

Satellite images indicate ongoing effusive activity and a dome growing by 4 to 5 million m³ last week. The flux of magmatic sulfur dioxide remains high, with 1,400 – 2,400 tonnes / day on 3 July, and 400 – 1,500 tonnes / day on 4 July.

Source: PVMBG

Strombolian eruptions continue at Anak Krakatau, Indonesia

Anak Krakatau is exploding frequently since June 18, 2018. The last strombolian eruptions are however becoming stronger and more frequent – almost every 20 minutes – with lava bombs being ejected more than 1km away from the crater! That’s really amazing!

anak krakatau eruption july 2018, anak krakatau eruption july 2018 pictures, anak krakatau eruption july 2018 video
Strombolian activity of Anak Krakatau in Indonesia on July 3, 2018 at 21h05 local. By Aris – Exploredesa

anak krakatau eruption july 2018, anak krakatau eruption july 2018 pictures, anak krakatau eruption july 2018 video
Seismicity of Anak Krakatau between April and July 2018

anak krakatau eruption july 2018, anak krakatau eruption july 2018 pictures, anak krakatau eruption july 2018 video
Seismogram of July 4-5, 2018. via Magma Indonesia

The lastest eruption occurred on July 3, 2018 at 5:33am, which lasted 40 seconds and had an amplitude of 38mm on the seismograph. Since then, Ash emission is continuous and drifting north.

Source: PVMBG & MAgma Indonesia

Mayon volcanic eruption on July 1, 2018 in the Philippines

After several months of rest, Mayon volcano erupted on July 1, 2018, at 12:30, sending blue and white clouds of ash 500 meters above the crater.

eruption Mayon volcano july 2018
eruption Mayon volcano july 2018

The phreatic eruption occurred around 12:30 local time. In March, the Philippine Institute of Volcanology and Seismology lowered the warning status of the volcano danger from the 3rd to the 2nd. Experts warn it wasn’t a good decision.

Update Fuego volcano eruption

More than three hundred people are still missing 1 month after a massive eruption occurred at Fuego in Guatemala. The eruption has now became the most powerful in recent years, affecting more than 1.5 million people.

Fuego volcano eruption 2018, Fuego volcano eruption july 2018, Fuego volcano eruption june 2018
Fuego volcano eruption in Guatemala on June 3, 2018. via Twitter

Since the beginning of 2018, Fuego volcano erupted only twice, but has already killed more than 100 people.

Unrest at White Island in New Zealand

Since April-hand powerful sounds from the crater have been heard by visitors. They will stop when the geothermal system has adjusted to the new lake.

white island new crater lake, white island new crater lake photo
Unrest on White Island as new crater lake is forming.

This lake is filling at a rate of 2,000 m³ per day … same rate as in 2003-2004, 2007-2008 and 2013, when previous lakes have drowned, leading to localized geysers and small geothermal eruptions, with occasional formation of small cones of tuff-debris around the vents. If the current lake filling continues at this rate, dome drowning is expected in 3-4 months.

white island new crater lake, white island new crater lake photo
Lake drowning could occur in the next months if it continues to fill at this rate.

However, observations during a recent overflight confirmed that volcanic activity remains at a stable and low level, with no sign of increasing volcanic disturbances. Therefore, current observations are consistent with minor volcanic unrest. Volcanic Alert Level 1 and aviation color code remains green.

Source: GeoNet – 04.07.2018

Kilauea eruption update

In the East rift zone of Kilauea, the activity of crack 8 continues. The lava flow underwent temporary blockages on July 3 and 4, which caused overflows near the Kapoho cone. These overflows have destroyed some more houses.

lava overflow Kilauea volcanic eruption on Hawaii
lava overflow Kilauea volcanic eruption on Hawaii

The National Weather Service reports a rare storm over the active lava field of the rift zone on July 2, that produced 1,200 lightnings in just 7 hours.

Lightning storm at during Kilauea volcanic eruption, lightning storm kilauea, rare lightning storm kilauea
Lightning storm at during Kilauea volcanic eruption.

The NWS meteorologist says that the volcano played a major role in this stormy episode, being the basis of the emission of Pyro cumulus. The other actor was an air pocket colder than normal at a lower altitude.

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Wow. Its like defcon 6...off the charts. And not slowing down either.

"Satellite images indicate ongoing effusive activity and a dome growing by 4 to 5 million m³ last week. The flux of magmatic sulfur dioxide remains high, with 1,400 – 2,400 tonnes / day on 3 July, and 400 – 1,500 tonnes / day on 4 July."

These stats about the Mt Agung eruption would be nice to have been put in a context that we mere slaves can understand.

For eg - a sincere statement from al gore saying human activity that supposedly causes climate change/global warming is totally insignificant & he is so sorry for misleading everyone he will donate his assets to the poor & live off charity henceforth to attone for his crimes.

Seriously though relating 1500 tonnes per day to say auto emissions or industry pollution

might help understand the size of these events.  

http://strangesounds.org/2018/07/volcanic-update-small-lava-island-...

Volcanoes are exploding everywhere, even deep in our Solar System: A small lava island formed off Kapoho, Hawaii. The Piton de la Fournaise volcano on La Reunion Inland stared erupting again on July 13, 2018. The Öræfajökull volcano in Iceland is inflating and preparing for a next major eruption. Continuous intense explosions of Anak Krakatau in Indonesia are heard over 42 kms around. A new volcano has been discovered on Io, one of Jupiter’s moon. And some other pictures and videos from around the world.

http://paracom.paramountcommunication.com/ct/48442682:WncgMGGNn:m:1...

A 100-foot-long fissure near the Yellowstone supervolcano has prompted the closure of parts of Teton National Park. Coupled with the Steamboat geyser’s newly active status, fears of an eruption at the Yellowstone caldera are increasing.

Teton National Park has issued a statement regarding the newly opened up fissure, according to WoodTV.  “The Hidden Falls and Inspiration Point areas are currently closed due to elevated potential for rockfall. The area was closed to protect human safety on July 10 after expanding cracks in a rock buttress were detected.  It is unknown how long the closure will be in effect. Geologists are monitoring the buttress for movement and have initiated a risk assessment for the area.”

Although scientists continue to tell the public the possibility of a major eruption is incredibly small, they also believe it’s worth the effort to constantly monitor the area. Hidden Falls and Inspiration Point are both closed and both are located in the popular Jenny Lake area. They are among the park’s busiest attractions. Other Jenny Lake attractions, including the ferry, remain open.  There is no estimate on when these locations could reopen.

Second earthquake swarm in one week hits off Oregon coast on the Cascadia Subduction Zone


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A swarm of earthquakes shook the Cascadia Subduction Zone off of the Oregon coast on Sunday morning shortly after 9:00 a.m., according to U.S. Geological Survey (USGS). The swarm marks the second in just a 5-day span giving fair warning to coastal residents that the Big One could hit anytime.

M5.3 earthquake oregon july 29 2018, earthquake swarm oregon coast july 28 2018, second earthquake swarm in 5 days cascadia off oregon coast
M5.3 earthquake hits the Cascadia subduction zone off Oregon coast on July 29 2018.

After a string of almost a dozen minor quakes last week, the waters off the southern Oregon coast – approximately 280 miles west of Florence, Oregon – rumbled with yet another M5.3 quake on Sunday morning, at 9:10 a.m. and was followed by a series of 4 aftershocks:

M 5.3 – Off the coast of Oregon
M 3.2 – Off the coast of Oregon
M 3.0 – Off the coast of Oregon
M 3.8 – Off the coast of Oregon
M 4.4 – Off the coast of Oregon

There was no tsunami alert issued, and there are only 10 reports of it being felt on land. The quake was about seven miles beneath the sea floor.

M5.3 earthquake oregon july 29 2018, earthquake swarm oregon coast july 28 2018, second earthquake swarm in 5 days cascadia off oregon coast
This is the second earthquake swarm off the Oregon coast, after a string of 10 quakes happened Tuesday morning.

The swarm marks the second in just a 5-day span giving fair warning to coastal residents who have already been warned as early as 2015 by a Federal Emergency Management Agency (FEMA) official that “everything west of Interstate 5 will be toast” from a mega-tsunami if indeed the big one hits.

Experts fear a mega-tsunami could be headed to the west coast in the near future as the fault is ‘overdue’ for the big one. Residents should remain vigilant.

A string of 10 quakes happened Tuesday morning, mostly about 125 miles west of Gold Beach. The largest was a 5.6 magnitude.

USGS:Strange Sounds

https://nexusmagazine.us3.list-manage.com/track/click?u=dd1894510f1...

Indonesia earthquake: at least 82 dead after quake strikes Bali and Lombok

Official death toll rises to 82 after magnitude 7.0 quake hits the two islands, with casualty figures still be counted

The death toll from Sunday’s magnitude 7.0 earthquake that struck the Indonesian islands of Bali and Lombok has risen to 82.

The National Disaster Mitigation Agency said early on Monday thousands of people had been evacuated from buildings to outdoor shelters.

Sunday’s earthquake triggered panic among holidaymakers and residents.

https://www.theguardian.com/world/2018/aug/09/indonesia-earthquake-...

 

Lombok earthquake: new quake hits as earlier tremor death toll rises

Magnitude 6.2 quake causes additional damage and building collapses as search goes on after Sunday’s disaster

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Amateur footage appears to capture moment of Lombok earthquake – video

An earthquake with a magnitude of 6.2 has hit Indonesia’s Lombok island, less than a week after a 6.9-magnitude tremor that is believed to have killed hundreds of people.

Thursday’s earthquake struck just after midday, sending panicked residents into the streets. According to information from Indonesia’s meteorology agency the epicentre of the quake was 6km north-west of the island with a depth of 12km.



Residents in the city of Mataram and north Lombok, the areas hardest hit this past week, panicked after Thursday’s strong tremor, pouring out of their homes and evacuation posts. “There was one person who fell from the stairs because the tremor shook the stairs when they tried to get out of the building,” Rangga, one local resident in central Lombok, told CNN Indonesia.

Thursday’s was the biggest of 355 aftershocks since the 6.9-magnitude quake last Sunday which displaced more than 154,000 people, many of whom have been sleeping in makeshift tents by the roadside and in their fields.

A short video posted by Indonesia’s national disaster agency spokesperson, Sutopo Purwo Nugroho, on his Twitter account showed that Thursday’s quake has caused additional damage, with some buildings and power lines collapsed.

https://www.yahoo.com/news/magnitude-6-5-earthquake-strikes-central...

KAVIK RIVER CAMP, Alaska (AP) — Alaska's North Slope was hit Sunday by the most powerful earthquake ever recorded in the region, the state's seismologist said.

At 6:58 a.m. Sunday, the magnitude 6.4 earthquake struck an area 42 miles (67 kilometers) east of Kavik River Camp and 343 miles (551 kilometers) northeast of Fairbanks, the state's second-biggest city. The U.S. Geological Survey says the earthquake had a depth of about 6 miles (9.9 kilometers.)

State seismologist Mike West told the Anchorage Daily News that the earthquake was the biggest recorded in the North Slope by a substantial amount. "This is a very significant event that will take us some time to understand," he told the Daily News.

Some useful fear porn from newshub for NZ.

Whether a catastrophic eruption buries the North Island in ash or leaves most it relatively unscathed depends on the weather, new research has found.

Three of the world's 10 biggest eruptions happened at Taupō. The last time it blew, 26,500 years ago, it "left a giant hole in the Earth's crust - now partly filled by Lake Taupō" says Simon Barker of Victoria University, who led the new study.

But what if it erupted today? Dr Barker's team used a "complicated calculation" mixing volcanology, geology and meteorology to find out.

"There's already been a huge amount of study on this volcano, so we had a good idea of the size and type of eruption that could happen in the future.

"We created scenarios based on different eruption sizes, spanning several orders of magnitude in volume, added in the weather data, and ran each scenario 1000 times to see where the ash would fall, and how thick the resulting deposits will be."

Let's hope it's a windy day next time Taupō decides to unleash its fury. Nice, still weather would be the worst-case scenario, he says, because that would result in an ash cloud like the one below - bad news for almost everyone north of Wairarapa.

© Provided by MediaWorks NZ Limited

In the scenario above, Auckland would get coated in a centimetre of ash. The lower Waikato and central North Island could get between three and 10cm.

In contrast, strong winds will blow much of it out to sea.

Last time Taupō erupted, it ejected an estimated 1170 square kilometres of material - around 800 times more than the 1886 Tarawera eruption, and more than 10,000 times more than Ruapehu managed in 1945 - when its ash coated cars as far south as Wellington.

"Another factor is the shape of the volcanic ash cloud - the ranges are from a weaker 'bent' cloud like from Ruapehu in 1995 to the massive 'umbrella' cloud that can blast more than 20km up into the stratosphere. This means that we need to include wind at different altitudes in the calculation."

The data they're collecting also sheds some light on how long each centre will have to evacuate, if necessary, before "tiny particles of glass and crystals" would start raining down.

"This kind of information can help emergency managers work out which areas need immediate evacuation. For instance in a large Taupō explosion, in the most common westerly weather pattern, it would take about three hours for the ash to reach Napier."

EQC, which funded the research, said it would be a big help for emergency planning and risk reduction.

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