Vulkaan Kilauea op Hawaii

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Hawaiian volcano might erupt in 24 hours after 250 quakes in short time
A Hawaiian volcano could be set to erupt after hundreds of earthquakes and the collapse of a crater floor.

Lava may burst through the ground east of Kilauea, the most active of the five volcanoes that form the state’s main island, geologists have warned.

Authorities urged the public to be on alert after scientists noted underground magma flowing beneath a main road near houses in the district of Puna.

More than 250 earthquakes have been detected since a crater floor collapsed at the Pu’u O’o vent in the shield volcano’s eastern rift zone earlier this week.

Most were minor but many were felt by locals, including one with a magnitude of 4.2, which shook the coast on Tuesday morning.

Scientists from the US Geological Survey’s Hawaiian Volcano Observatory (HVO) warned the seismic activity could lead to a lava breakout, although they could not say where or when.

“Magma has now migrated into a lower part of the east rift zone,” she said, adding there was concern that it was in a rift near Highway 130, a major road on the island.

There are homes in that area of Hawaii's Big Island and the road also leads to a popular access point where people can hike or bike into the lava viewing area.

The Hawaii County Civil Defence Agency issued an alert warning people in the area to monitor the situation and be prepared for the possibility of a new lava flow.

Spokeswoman Kanani Aton said the agency was “planning ahead for a worst-case scenario” by reviewing emergency plans and monitoring the activity.

Ms Babb said the activity has slowed significantly since a spike earlier this week but the threat level has not changed.

However, scientists are not sure if decreased seismic activity is an indication that the event is over or if it has just stalled before picking back up.

“That’s the unknown at this point," Ms Babb said. "Therefore we are still watching, we are watching very closely."

Geologists flew over the area in a helicopter and observed a layer of red ash covering the ground near the Pu’u O’o vent. The ash was spread throughout the area when the crater floor collapsed.

“The good news is that as they flew down the east rift zone they didn’t see any ground cracks or steaming that would suggest that the magma was coming near the surface,” Ms Babb said.

Most of Kilauea’s activity has been not been explosive, but an eruption in 1924 spewed ash and 10-tonne rocks into the sky, killing one man.

In 1983 an eruption of Pu’u Oo resulted in lava fountains soaring over 1,500 feet high. In the decades since, the lava flow has buried dozens of square miles of land and destroyed many homes.

In 2008, after a series of small earthquakes rattled the island, Kilauea’s summit crater opened and gushed lava and rock over 75 acres of the mountain, damaging a nearby viewing point

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Kilauea-vulkaan op Hawaï spuwt rook en lava
De Kilauea-vulkaan op Hawaï spuwt rook en lava. Voor het eerst sinds 2016 ligt er lava op de kraterbodem.

Kilauea In Hawaii OnGoing (Emergency Event) | Server 4 | VolcanoYT

Overflowing Lava Lake Recorded From Above Kilauea (Apr. 26, 2018)

Kilauea Volcano Earthquake Swarm Alert: Hawaii

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janinekrippner twitterde op woensdag 02-05-2018 om 16:01:53 Kilauea: "A new crack 1 km (0.6 mile) long was found on the west (uprift) side of Pu‘u ‘Ō‘ō during HVO's overflight"https://t.co/VBscoQsYl1 https://t.co/EWAtqpX12l reageer retweet

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Kilauea volcano: Residents along the East Rift Zone told to prepare to evacuate

Lower Puna officials in Hawaii are preparing for a possible eruption amid continuous earthquakes along the East Rift Zone of Kīlauea Volcano. The preparations include the identification of shelters, mobilization of police and other security personnel to ensure residents’ safety, and road crews to ensure access to evacuation routes.

"Should an eruption occur, residents along the East Rift Zone may have little warning and should be prepared to evacuate," said Civil Defense Administrator Talmadge Magno, adding that the County will keep the community informed about the situation.

"All agencies have been alerted about the possibility of an eruption," Magno said. "The risk areas and possible hazards are being identified, and shelters have been identified."

Recent observations
Elevated rates of seismicity and deformation at Kīlauea Volcano along a section of the lower East Rift Zone east of the Pu‘u ‘Ō‘ō vent continue, the Hawaiian Volcano Observatory (HVO) reported 05:23 UTC on Thursday, May 3, 2018.

This activity is associated with the continued intrusion of magma into the East Rift Zone to locations east of Highway 130 and an outbreak of lava from the lower East Rift Zone remains a possible outcome of the continued unrest, HVO warns. At this time it is not possible to say with certainty if or where such an outbreak may occur, but the area downrift (east) of Pu‘u ‘Ō‘ō remains the most likely location.

A GPS station located about 1.5 km (1 mile) southwest of Nanawale Estates began moving toward the north on Wednesday morning local time, indicating the magma intrusion is approaching this area of the East Rift Zone. The station has already moved several centimeters.

A tiltmeter at Pu‘u ‘Ō‘ō recorded steady, deflationary tilt during the day, with several sharp inflation offsets. These offsets probably recorded the continued episodic collapse of the crater floor. Some of these offsets corresponded to short-lived ashy plumes rising from the crater.

Tiltmeters at the summit began recording an increased deflationary tilt this afternoon. The summit lava lake level has lowered about 20 m (65 feet) since the deflationary tilt began in the early morning on May 1.

New small ground cracks less than a few cm (inches) wide developed yesterday across a couple of roads in and adjacent to Leilani Estates. These cracks reflect the buildup of stress at the surface due to the magma intrusion. No steam or gases were observed escaping from the cracks.

Analysis of webcam images of the 61g lava flow field on May 1 indicates that surface flows within a few kilometers of Pu‘u ‘Ō‘ō have stopped advancing - the few areas of incandescence visible in the images did not move starting early morning on May 1. The 61g flow is likely no longer being supplied with lava from Pu‘u ‘Ō‘ō.

Flyover Pu'u O'o: Huge Plume, Steaming Fissures (May 1, 2018)

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Kilauea volcano erupts near residential area
Mount Kilauea volcano has erupted near a residential area on Hawaii's largest island, prompting a local state of emergency and the mandatory evacuation of 1,700 local residents.

One witness said lava had burst across a road like a curtain of fire. He said he could smell sulphur and burning trees.

Community centres have been opened to provide shelter.

The eruption follows a series of strong earthquakes over recent days.

A volcanic crater vent - known as Puu Oo - collapsed earlier this week, sending lava down the mountain's slopes towards populated areas.

Officials had been warning residents all week they should be prepared to evacuate as an eruption would give little warning.

twitter:

ABC twitterde op vrijdag 04-05-2018 om 06:48:57 Lava can be seen spewing from a vent in Hawaii's Leilani Estates community on the Big Island after eruption of Kilauea volcano. https://t.co/DdDqlKmyV2The county has ordered evacuations for all of Leilani Estates, which according to the last Census has a population of 1,500. https://t.co/v8O2poQGPe reageer retweet

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Op maandag 7 mei 2018 08:05 schreef Eyjafjallajoekull het volgende:
Bewegend beeld:

Hawaii Volcano Eruption Update - Sunday Evening (May 6, 2018)

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Angst en beven: metershoge lavastroom in achtertuin bewoners Hawaii

HAWAII - Na de uitbarsting van de vulkaan Kilauea op Hawaii zijn zeker 21 woningen compleet verwoest. Er vielen geen gewonden. Vanuit een helikopter zijn spectaculaire beelden van de uitbarsting gemaakt. Te zien is hoe de lavastroom niets heel laat van (vakantie)woningen met zwembad.

Zo’n 1700 inwoners van het woongebied rond de vulkaan zochten eerder een veilig heenkomen. Ontheemde eilandbewoners kunnen terecht bij meerdere opvangcentra.

Vulkaanuitbarsting Hawaii: gebied geëvacueerd
Het gaat om huizen in de wijk Leilani Estates ten oosten van de berg op het grootste eiland van de archipel. Ook zijn tien scheuren ontstaan in het aardoppervlak waardoor lava ontsnapt.

Volgens het Amerikaanse seismologische dienst USGS begon de uitbarsting van Kilauea op 30 april. De uitbarsting ging gepaard met verschillende aardbevingen die beperkte schade veroorzaakten aan wegen op het eiland en voor korte stroomstoringen zorgden.

Schildvulkaan
De Amerikaanse staat Hawaii telt meerdere vulkanen en Kilauea is een van de meest actieve vulkanen ter wereld. Het gaat om een zogenoemde schildvulkaan. Als die uitbarst kan het lava niet alleen uit de krater stromen maar ook door ondergrondse scheuren op andere plaatsen aan de oppervlakte komen.

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Op maandag 7 mei 2018 12:51 schreef J.A.R.V.I.S. het volgende:

[..]

Er zijn dus 10 "uitbarstingen" als ik de kaart goed lees?

Frutsel, complimenten voor dit soort topics, of het nu orkanen of vulkanen zijn, klasse OP en info keer op keer.

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Kilauea volcano update: Eruption at east rift zone continues at moderate - low levels

Eruption of lava and gas continues at a low level along Kīlauea Volcano's lower East Rift Zone within the Leilani Estates subdivision. USGS reports that on Monday 7 May 2 new fissures opened up and temporarily erupted lava, making a total of 12 fissure segments that broke ground and were active since the start of the eruption in the Leilani Estates.

The longest lava flow thereby advanced about 0.9 km (0.6 miles) northward from fissure 8 before stopping. Large cracks have now also appeared on Highway 130 west of the eruption site and they continue to widen (up to 7 – 8 cm by now) and expel volcanic gasses and steam. Rates of seismicity and deformation changed little throughout the day and gas emissions likely remain elevated in the vicinity of fissures.

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During the afternoon, two more fissures opened along the lineament of the previous fissures in the Leilani Estates and erupted briefly. Fissure #13 erupted at 14:47 local time across Leilani Street near the intersection with Pohoiki Road and rem,ained active until about 17:00.
The fissure #14, located a bit to the SW, had apparently a similar activity.
Earthquakes continue, but have been decreasing in numbers and size over the past days.

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Hawaï sluit Nationaal Park rond spuwende vulkaan Kilauea

Het vulkaan-observatorium op Hawaï heeft het Volcanoes National Park tot nader order gesloten. De risico's van de uitbarstingen van vulkaan Kilauea zijn te groot. "En het ziet er niet naar uit dat het binnenkort is afgelopen."

Experts vrezen dat de vulkaan keien zo groot als koelkasten in de lucht kan gooien. "Niemand wil bedolven worden door iets dat tien ton weegt en er met 193 km per uur uitgespuugd wordt", zegt Charles Mandeville, vulkaancoördinator op Hawaï.

"Het lijkt op dit moment misschien rustig, maar dat is het helemaal niet", aldus KNMI-vulkanoloog Elske de Zeeuw - van Dalfsen. "Ten oosten van de zone waar de lava naar buiten komt, zijn op dit moment veel aardbevingen. En er is nog een ander type meting: we zien dat de aarde uit elkaar wordt gedrukt. Dat betekent dat er daar nog veel materiaal naar boven gaat komen."

Lavameer
Wat de uitbarstingen van vulkaan Kilauea (Haïtiaans voor uitspuwen) zo bijzonder maakt, is dat de lava omhoog komt in een gebied veertig kilometer weg van de top van de vulkaan. "De vulkaan heeft behalve een krater ook twee ondergrondse armen. De magmastromen kunnen zich dus ondergronds bewegen", zegt De Zeeuw - van Dalfsen.

"In de vulkaan was een lavameer, opeengehoopt in de vulkaankrater, bijna tot aan de oppervlakte. Dus dat kon je goed zien. Dat lavameer is 290 meter gedaald. Al die lava is ondergronds verdwenen richting het oosten. En dat komt naar boven op een zwakke plek. De vraag was alleen waar."

Volgens de vulkanoloog weten mensen die er wonen wat er kan gebeuren. "Ze weten natuurlijk dat ze op een vulkaan wonen. Letterlijk. En dat wordt al op school uitgelegd. Ook alle maatregelen. Men weet het gewoon en accepteert de uitbarstingen. Maar niemand kijkt graag toe hoe zijn huis afbrandt."

Uit de vulkaan komt behalve lava ook het giftige gas zwaveldioxide, dat een sterke geur van rotte eieren verspreidt. Inwoners zijn ook daarvoor gewaarschuwd. Het is vooral schadelijk voor ouderen, kinderen en mensen met ademhalingsproblemen. Sinds de eerste uitbarstingen ruim een week geleden zijn al 36 huizen en gebouwen vernield en hebben tweeduizend mensen hun huizen verlaten.

Godin Pele
Half april ontdekten vulkanologen dat er steeds nieuwe scheuren in de berg ontstaan, waardoor er uit verschillende kraters lava stroomt die soms negentig meter de lucht in spuit. Geologen rapporteren harde knallen en dreunende geluiden. Ook zijn er regelmatig aardbevingen. "Er ontstaat een klein scheurtje en dat scheurtje breidt zich uit tot een grotere spleet en daar komt de lava door naar boven", zegt De Zeeuw - van Dalfsen.

De Kilauea is over het algemeen niet erg actief, maar spuwt al sinds 1983 lava. Deskundigen vergelijken de huidige situatie met 1955, toen de vulkaan 88 dagen lang lava spuwde en 400 hectare grond met lava bedekte. Volgens een oud volksgeloof zou de godin Pele in de berg wonen.

"Een deel van de bevolking gelooft in Pele - de godin van het vuur - en brengen ook offers om Pele te vragen de uitbarsting te stoppen en hun huis te sparen. Offers als theebladeren, die steken ze in de grond. Er worden geen kinderen geofferd hoor."

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Two new fissures opened on Hawaii's Big Island
Two new fissures opened on Hawaii's Big Island Sunday, spewing lava and fumes and forcing more residents to evacuate.

Hawaii's Civil Defense Agency announced the latest crack in the ground Sunday evening. It is the 18th fissure to open on the island in the days since the Kilauea volcano erupted on May 3.
Fissure 18 emerged near Halekamahina Loop Road -- where fissure 17 erupted early Sunday, splattering lava tens of feet into the air.

Fissure 17 is several hundred yards long.
Nearly 2,000 people have been evacuated since the volcano erupted, sending lava flowing into communities and threatening a nearby geothermal plant.

The volcanic vents, or fissures, have gobbled up dozens of homes and vehicles, with 37 structure so far destroyed.

The Hawaii Civil Defense Agency said in a Sunday message that vacation rentals in Lower Puna were directed to cease operations to relieve the demand for water as well as reduce the area population so emergency responders can focus on residents.

The Hawaii Police Department also enforced the Federal Aviation Administration's temporary flight restriction for Lower Puna. No helicopter or drone activity is allowed without approval.
Another fissure, the 16th, was reported earlier Saturday and "produced a lava flow that traveled about 250 yards before stalling," officials said.

That vent was about a mile east of the Puna Geothermal Venture plant, where officials removed 60,000 gallons of flammable liquids due to safety concerns.

In addition to the new fissures, USGS officials said an explosive eruption is possible at Halemaumau crater at the top of the Kilauea volcano. Such an eruption could generate ash plumes over an area 12 miles from the summit crater, the HOV said.

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Vrees voor nieuwe uitbarstingen vulkaan Hawaï door grote scheur

De Amerikaanse seismologische dienst USGS waarschuwt voor nieuwe uitbarstingen van de vulkaan Kilauea op Hawaï. Op zondag ontstond een nieuwe, driehonderd meter lange scheur waaruit lava stroomt. De autoriteiten hebben opdracht gegeven tot verdere evacuaties.
De uitbarsting van de twaalfhonderd meter hoge Kilauea begon ruim twee weken geleden. Sindsdien zijn meer dan tienduizend mensen geëvacueerd en zeker 26 huizen door de lavastromen verwoest.

De vulkaan is een van de meest actieve ter wereld. Het gaat om een zogenoemde schildvulkaan. Als die uitbarst, kan de lava niet alleen uit de krater stromen, maar ook via ondergrondse scheuren op andere plaatsen aan de oppervlakte komen.

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Op maandag 14 mei 2018 14:03 schreef Brighteyes het volgende:
Frutsel, ik lees vol interesse mee hoor! Ik heb er alleen niet heel veel meer over te zeggen dan 'Wauw, wat interessant' oid.

Maar blijf vooral updates posten. Ik vind het heerlijk zo allemaal bij elkaar.

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Op maandag 14 mei 2018 14:33 schreef Hyperdude het volgende:

Earthquake Animation: Kilauea 2018

Dude Takes A Dab Hit Off Lava!

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Eruption intensifies, lava continues to spread in lower rift zone

The eruption seems to pick up in activity. Activity at the most recent fissures 17 and 18, located at the northeast end of the active fissure system (downrift), has been continuous during the night.
It is characterized by "lava fountaining, explosion of spatter bombs hundreds of feet into the air, and several advancing lava flow lobes moving generally northeast from fissure 17 at the downrift (northeast) end of the new fissure system.", HVO reported a short time ago in the first morning update. "As of about 7 pm, one lobe was 2 yards thick and advancing roughly parallel to Highway 132. The flow front was just over a half mile southeast of the intersection of Highway 132 and Noni Farms Road."

No other significant changes have occurred: earthquakes continue and the summit continues to deflate, increasing the risk of explosive eruptions if ground water enters into the drained conduit of where Halema'uma's lava lake used to be.

ava continues to be erupted from the latest fissures that opened up during the past 48 hours, labeled #17 and #18, and there are signs that the eruption is still developing and might continue (and potentially increase) for a while.

Hawaii just AMAZING Lava Fissure 17

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The spattering/exploding event at fissure 17 continues… pushing the hot liquid rock another two-tenths of a mile toward the Pacific Ocean overnight. She is now nearly half way to the water. And two new fissures, numbers 19 and 20, have apparently broken out in Lani Puna Gardens… just southeast of the PGV Geothermal plant. We heard an unconfirmed report this morning that another house had been destroyed in Lani Puna Gardens. The enormous amount of lava erupted is only a couple hundred yards from Highway 132, but that lobe has apparently stalled. The rest of the flow now appears to be headed in the direction of Ahalanui Beach Park (hot pond) area, or possibly as far northeast as Vacationland and Kapoho Beach Lots.

HVO confirms fissure 20 opened

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Fissure 20 opened
A new burst of volcanic ash has been released from the Kileaua volcano today in what U.S. Geological Survey officials warn is “a phase of more continuous explosive activity.”

Rock falls and gas explosions within Halemaumau Crater caused the ash plume, the Hawaii County Civil Defense Agency said in a Facebook post today.

The plume also signifies that residents of the Big Island “need to expect that it will become more explosive," Rick Hazlett of the USGS told ABC News.

Kileaua volcano in Hawaii sees new burst of volcanic ash, May 15, 2018.USGS Volcanoes
The Kileaua volcano in Hawaii sees new burst of volcanic ash, May 15, 2018.
Excessive exposure to ash can make driving difficult and can irritate the eyes and respiratory system, so officials have also urged residents to minimize their exposure to it.

This new burst of ash comes hours after the Hawaii County Civil Defense Agency said a new fissure has opened up on the Big Island, bringing the total number of lava- and gas-spewing cracks to 20 in the wake of the May 3 eruption.

Officials Monday warned of "hazardous emissions of sulfur dioxide" in the Lanipuna Gardens subdivision.

The air quality there has been evaluated as a "condition red," which means the air could pose an immediate danger, the Civil Defense Agency said in a post on Monday. The gases are especially dangerous for the elderly, children, babies and people with respiratory problems, officials said.

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Hawaii Kilauea volcano could soon explode in once-in-a-century eruption

VOLCANOES NATIONAL PARK, Hawaii -- The Kilauea volcano on Hawaii's Big Island has been blowing off toxic steam and releasing lava for a week. But on Thursday, there were signs it could soon explode and widen the disaster.

Geologists are warning a possible explosion at the summit of Kilauea could be the largest in nearly 100 years, hurling boulders the size of refrigerators. The heavy clouds of smoke coming from the main crater on Wednesday were likely triggered by a rock fall from the crater walls.

As the lava levels inside the volcano drain lower, the danger of an eruption can actually increase. When the molten rock reaches groundwater levels, pressurized steam can cause an explosion, shooting rocks and ash miles away from the crater.

Further down the volcano, the underground lava, oozing through cracks in the neighborhood of Leilani Estates is only about a half-mile away from a geothermal power plant. The plant has been shut down, and workers are trucking away 60,000 gallons of flammable liquids. Hawaii Gov. David Ige issued an emergency proclamation to secure the area.

"If you project the line where the fissures are occurring, the PGV facility is on that line, so we definitely want to be prepared," Ige said.

More: Growing concerns over flammable liquids stored in power plant threatened by lava
Volcanoes National Park will be closed Friday because of the threat. Scientists think conditions could be right for a major explosion within a few days. The last time that happened was in 1924 when it blasted rock and ash more than five miles into the air.

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Red Alert Declared in Hawaii, Kilauea Eruption "Imminent"

The U.S. Geological Survey has raised the alert for Hawaii’s Kilauea volcano from an orange to a red warning.

Ash eruption at the volcano’s summit increased in intensity Tuesday, with an ash cloud spewing as high as 12,000 feet above sea level, according to the USGS.

Ashfall and air pollution associated with a volcanic eruption have been reported as far as 18 miles downwind of Kilauea in Pahala.

A red warning means a “major volcanic eruption is imminent, underway or suspected with hazardous activity both on the ground and in the air,” the USGS said.

"At any time, activity may become more explosive, increasing the intensity of ash production and producing ballistic projectiles near the vent," the agency tweeted.

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No significant changes, new fissure opens
The eruption in the lower east rift zone continues with no significant changes. A new fissure has opened up probably during thge night between fissure #16 and #20 and erupted small amounts of lava with spattering during a few hours.
The so-far most productive fissure #17 continues to feed a lava flow towards the ESE, but its progress has significantly slowed down. HVO estimates that it only advanced about 100 m during the past 24 hours, making the scenario of lava reaching the coast in a near future much less likely now.

More significant events have been taking place at the summit, at the site of the former Halema'uma'u lava lake: Visually, ash emissions have increased during the past 48 hours, prompting HVO to raise the aviation color code to red. There are signs that some of the explosive activity might not only be caused by deep rockfalls / collapses inside the drained conduit, but beginning water-hot rock interaction:

Ballistic blocks of up to up to 60 cm (2 feet) across "were found in the parking lot a few hundred yards from Halemaumau. These reflect the most energetic explosions yet observed and could reflect the onset of steam-driven explosive activity. Further observations are necessary to asses this interpretation. Additional such explosions are expected and could be more powerful."