Explainer: Scientists struggle to monitor Tonga volcano after massive eruption

1/17/2022 11:15:00 AM

Scientists are struggling to monitor an active volcano that erupted off the South Pacific island of Tonga at the weekend, after the explosion destroyed its sea-level crater and drowned its mass, obscuring it from satellites.

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Scientists are struggling to monitor an active volcano that erupted off the South Pac ific island of Tonga at the weekend, after the explosion destroyed its sea-level crater and drowned its mass, obscuring it from satellites.

Scientists are struggling to monitor an active volcano that erupted off the South Pac ific island of Tonga at the weekend, after the explosion destroyed its sea-level crater and drowned its mass, obscuring it from satellites.

RegisterSaturday's eruption was so powerful that space satellites captured not only huge clouds of ash but also an atmospheric shockwave that radiated out from the volcano at close to the speed of sound.TongaThe unusual "astounding" speed and force of the eruption indicated a greater force at play than simply magma meeting water, scientists said.

The Tonga Geological Services agency, which was monitoring the volcano, was unreachable on Monday. Most communications to Tonga have been cut after the main undersea communications cable lost power.That compared with 8,000 strikes per hour during the Anak Krakatau eruption in 2018, caused part of the crater to collapse into the Sunda Strait and send a tsunami crashing into western Java, which killed hundreds of people.

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Tsunami waves hit South Pacific island of Tonga following volcanic eruptionA tsunami has hit Tonga's largest island, Tongatapu, and reportedly sent waves flooding into the capital after an underwater volcano in the South Pac ific exploded in a violent eruption on Saturday, sending a cloud of ash and gas steam into the air. The explosion has been heard in New Zealand and was accompanied by a distinct change in air pressure. The tsunami has already hit. Several hours ago. And...there's no communication there

Tonga volcano eruption triggers tsunami warnings in Japan, Pacific islandsAn underwater volcano off Tonga erupted on Saturday, triggering tsunami warnings and evacuation orders in Japan and causing large waves in several South Pac ific islands, where footage on social media showed waves crashing into coastal homes. tonyserrata The entire coast of CA was on alert today. It caused rain here in Bakersfield.

Eruption of Undersea Volcano Near Tonga Triggers Tsunami Warnings Across PacificThe extent of the damage in the country of Tonga remains unclear. Hawaii and the West Coast experienced effects of the tsunami on Saturday morning.

Pacific tsunami warning recedes; Tonga covered by ash cloudThe tsunami threat throughout the Pac ific from a huge underwater volcanic eruption has begun to recede, though the massive ash cloud covering Tonga is preventing surveillance flights from New Zealand to assess the extent of damage.

Pacific tsunami warning recedes; Tonga covered by ash cloudThe tsunami threat throughout the Pac ific from a huge underwater volcanic eruption has begun to recede, though the massive ash cloud covering Tonga is preventing surveillance flights from New Zealand to assess the extent of damage.

Tsunami threat in Pacific ebbs after undersea volcanic eruption near Tonga, but massive ash cloud remainsThe tsunami threat around the Pac ific from an undersea volcanic eruption receded Sunday, but the massive ash cloud covering Tonga prevented surveillance flights from New Zealand to assess damage.

The eruption of Hunga-Tonga-Hunga-Ha'apai volcano, which sits on the seismically active Pacific Ring of Fire, sent tsunami waves across the Pacific Ocean and was heard some 2,300 kms (1,430 miles) away in New Zealand.(CNN) Satellite imagery shows a massive ash cloud and shockwaves spreading from the eruption.Japan's meteorological agency issued tsunami warnings in the early hours on Sunday and said waves as high as three metres (9.Satellite image of eruption of the Hunga Tonga Hunga Ha’apai volcano on Saturday.

"The concern at the moment is how little information we have and that's scary," said Janine Krippner, a New Zealand-based volcanologist with the Smithsonian Global Volcanism Program. Register now for FREE unlimited access to Reuters.A tsunami warning has been issued for the islands of Tonga.com Register "When the vent is below water, nothing can tell us what will happen next. Public broadcaster NHK said no damage or casualties had been reported, interrupting its regular programming to report on the tsunami advisory spanning the entire eastern coast of the issued by the country's meteorological agency." Krippner said on-site instruments were likely destroyed in the eruption and the volcanology community was pooling together the best available data and expertise to review the explosion and predict anticipated future activity.The Hunga-Tonga-Hunga-Ha'apai volcano first erupted Friday, sending a plume of ash 20 kilometers (12. Saturday's eruption was so powerful that space satellites captured not only huge clouds of ash but also an atmospheric shockwave that radiated out from the volcano at close to the speed of sound. The Eruption The Hunga Tonga Hunga Ha’apai volcano first erupted Friday, sending an enormous plume of ash up to 12 miles into the air, and then erupted again on Saturday at 5:26 p.

Photographs and videos showed grey ash clouds billowing over the South Pacific and metre-high waves surging onto the coast of Tonga.1. The warnings - the first in more than five years - covered several specific areas. There are no official reports of injuries or deaths in Tonga yet but internet and telephone communications are extremely limited and outlying coastal areas remain cut off. Experts said the volcano, which last erupted in 2014, had been puffing away for about a month before rising magma, superheated to around 1,000 degrees Celsius, met with 20-degree seawater on Saturday, causing an instantaneous and massive explosion.2022: (correction on date) Large volcanic eruption near Tonga (Hunga Tonga-Hunga Ha'apai volcano) today as seen from outer space. The unusual "astounding" speed and force of the eruption indicated a greater force at play than simply magma meeting water, scientists said. Tsunami waves were observed in Tonga's capital and the capital of American Samoa, a U. As the superheated magma rose quickly and met the cool seawater, so did a huge volume of volcanic gases, intensifying the explosion, said Raymond Cas, a professor of volcanology at Australia's Monash University. #hiwx #tsunami #earthquake pic. It also produced an intense lightning storm: Satellite imagery shows that a large portion of the island that had been created by the volcano was destroyed prior to the large event on Saturday.

Some volcanologists are likening the eruption to the 1991 Pinatubo eruption in the Philippines, the second-largest volcanic eruption of the 20th century, which killed around 800 people. The Tonga Geological Services agency, which was monitoring the volcano, was unreachable on Monday.com/Y18W7wvXl9 — NWSHonolulu (@NWSHonolulu) January 15, 2022 Read MoreA second eruption hit on Saturday at 5:26 p. The volcano, which lies about 65 km (40 miles) north of Nuku'alofa, caused a 1. Most communications to Tonga have been cut after the main undersea communications cable lost power. LIGHTNING STRIKES American meteorologist, Chris Vagasky, studied lightning around the volcano and found it increasing to about 30,000 strikes in the days leading up to the eruption. local time, RNZ reported. On the day of the eruption, he detected 400,000 lightning events in just three hours, which comes down to 100 lightning events per second. 1/3 The eruption of an underwater volcano off Tonga, which triggered a tsunami warning for several South Pacific island nations, is seen in an image from the NOAA GOES-West satellite taken at 05:00 GMT January 15, 2022. “Until we know how much material has been ejected (made harder by the underwater component), we can’t use the scale,” volcanologist Jess Phoenix tweeted.

That compared with 8,000 strikes per hour during the Anak Krakatau eruption in 2018, caused part of the crater to collapse into the Sunda Strait and send a tsunami crashing into western Java, which killed hundreds of people.2 meters (about 4 feet) near Nuku'alofa at 5:30 p. Cas said it is difficult to predict follow-up activity and that the volcano's vents could continue to release gases and other material for weeks or months. "It wouldn't be unusual to get a few more eruptions, though maybe not as big as Saturday," he said. local time on Saturday. Fiji issued a tsunami warning, urging residents to avoid the shorelines "due to strong currents and dangerous waves". "Once the volcano is de-gassed, it will settle down." Register now for FREE unlimited access to Reuters.The volcano is located about 30 kilometers (18. The extent of the damage in the country, which is home to some 105,000 people, remains unclear.

com Register Reporting by Kanupriya Kapoor; Editing by Jane Wardell and Michael Perry Our Standards: More from Reuters Daily Briefing Subscribe to our daily curated newsletter to receive the latest exclusive Reuters coverage delivered to your inbox. There were no immediate reports of casualties. Sign up .In addition to the tsunami warning, Tonga's Meteorological Services have issued advisories for heavy rain, flash flooding and strong winds in lands and coastal waters.