New bathymetry map of Hunga Tonga-Hunga Ha'apai volcano's caldera (image: Shane Cronin and Tonga Geological Services)
A new bathymetry map of the volcano's caldera has been released today.
Wed, 23 Feb 2022, 18:46Recovery efforts from the 14-15 January eruption of Hunga Tonga-Hunga Ha'apai continued in Tonga. According to a news article, the main undersea international fiber-optic communication cable that had been severed in multiple places due to the eruption had been repaired by 21 February, and internet connectivity was restored by 22 February. Repairs had begun on 3 February to rejoin 5-6 pieces and replace a 55 km section of the cable that was missing and likely buried in sediment.
Thu, 10 Feb 2022, 09:24
On 4 February the Tonga Geological Services (TGS) posted drone footage of the Good Samaritan Beach, located on the NE side of Tongatapu, showing that tsunamis from the 15 January Hunga Tonga-Hunga Ha'apai eruption reached areas at 15 m elevation, 200 m inland. A 6 February post provided details of what happened when tsunamis reached Mango Island (75 km ENE), stating that waves 12 m high went over the church tower, reached 500 m inland, and pushed buildings and structures against the inland wall of trees. Residents fled to an area that was 30 m elevation, 700 m from the coast, and stayed there all night as ash fell.
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Wed, 26 Jan 2022, 19:42No additional eruptive events were detected at Hunga Tonga-Hunga Ha'apai after the large and explosive eruption on 15 January. The gas, steam, and ash plume produced during that eruption rose into the stratosphere and drifted W. Based on volcanic ash advisories issued by the Wellington VAAC and then by the Darwin VAAC, the horizontal extent of the plume grew from 18,000 square kilometers at 1739 on 15 January to 12 million square kilometers by 1300 on 19 January.
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Sat, 22 Jan 2022, 04:04
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SO2 emissions approached Madagascar and East Africa today (image: ADAM Platform)
The 7,000 km long aerosol plume continues to travel over the Indian Ocean and approached Madagascar and East Africa today.
Fri, 21 Jan 2022, 04:04
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The shockwave antipode in southern Algeria (image: @weather_models/twitter)
The satellite Meteosat-11, operated by EUMETSAT, detected the shockwave reaching its antipode.
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Fri, 21 Jan 2022, 02:46
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Ash emissions visible from International Space Station (image: Paul Byrne)
An impressive image of ash grey clouds traveling in the atmosphere has been captured from the International Space Station (ISS).
Fri, 21 Jan 2022, 02:38
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Some points may have risen up to 55 km altitude (image: @simon_sat/twitter)
The NERC National Centre for Earth Observation (UK) researches the exact height of the eruption plume. The spectacular huge ash plume spread into an umbrella cloud that reached a confirmed 35 km altitude, but some points may have risen to an estimated 55 km altitude.
Fri, 21 Jan 2022, 02:18
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Shockwaves are visible in the area of the red circle (image: Gemini Observatory/twitter)
A stunning video of passing waves has been captured by the Gemini North Observatory's cameras at Mauna Kea volcano in Hawaiʻi.
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Fri, 21 Jan 2022, 01:58
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Destroyed houses by the tsunami (image: Consulate of the Kingdom of Tonga)
An after-eruption video of ash and tsunami-affected populated areas from Tonga has been published. It seems to have been destroyed almost every house impacted by the tsunami.
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Thu, 20 Jan 2022, 02:14
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The pressure graph shows 6 peaks of the wave (image: @EIlyinskaya/twitter)
around the globe was recorded by the Icelandic Meteorological Office (IMO).
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Wed, 19 Jan 2022, 16:52
First images of ash-affected Nuku'alofa, the capital of Tonga, are coming from local people.
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Wed, 19 Jan 2022, 16:48
First images of ash-affected Nuku'alofa, the capital of Tonga, are coming from local people.
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Wed, 19 Jan 2022, 16:33
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SO2 plume visible in red circle (image: @andrewmiskelly/twitter)
The aerosol plume from the violent explosion continues to extend further over the Indian Ocean.
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Wed, 19 Jan 2022, 03:24
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Eruption at Hunga Tonga-Hunga Ha'apai volcano accompanied with lightning (image: Reuters)
Scientists from NASA were measuring the power of the dangerous explosion that took place on 15 January.
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Wed, 19 Jan 2022, 00:10
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The massive eruption plume seen from space (image: Himawari-8)
Based on preliminary satellite data from global weather radars, an estimated height of the eruption column likely reached an altitude of 39 km (128,000 ft)!
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Tue, 18 Jan 2022, 23:31
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The current shape of the volcano from today. Rafting pumice visible in the image (image: planet)
Erosion at the volcano continues at a quick pace. Another significant morphological change can be seen in the latest satellite image of the island from 17 and 18 January compared to the previous imagery from 15 January.
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Tue, 18 Jan 2022, 14:16Large eruptions at Hunga Tonga-Hunga Ha'apai on both 14 and 15 January produced plumes that reached the stratosphere and caused significant regional effects. Activity on the 14th apparently removed approximately the middle third of the island that had been expanded over the previous few weeks, revealed by a Planet Lab image acquired at 1525 on 15 January. About two hours after that image was taken an even stronger eruption activity produced a stratospheric plume seen in satellite images, sent pressure waves across the atmosphere, and caused tsunami that traversed the Pacific.
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Tue, 18 Jan 2022, 03:43
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Map of undersea cables (image: BBC)
A few hours after the eruption, Tonga's internet and phone lines were disrupted as the main undersea cable, linking Tonga and Fiji with the rest of the world, seems to have been cut which make 105 000 Tonga residents almost unreachable.
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Tue, 18 Jan 2022, 03:14
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SO2 emissions have been traveling along the southern hemisphere and reached Australia today (image: ADAM Platform)
The aerosol plume from the latest violent explosion continues to travel along vast stretches in the southern hemisphere. The latest satellite-based measurements of SO2 concentrations in the atmosphere show the impressive SO2 eruption plume that has been reaching Australia.
Tue, 18 Jan 2022, 03:04
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Ashfall in Nomuka village (image: UNOSAT)
First after-eruption satellite images of several ash-impacted Tongan populated towns and villages were published by UNOSAT and MAXAR satellites.
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Mon, 17 Jan 2022, 13:00
Mon, 17 Jan 2022, 03:15
Mon, 17 Jan 2022, 01:12
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Infrasound records of three Cascade volcanoes (image: USGS/twitter)
The United States Geological Survey (USGS) detected another pass of the atmospheric pressure wave that was being recorded around the globe.
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Mon, 17 Jan 2022, 00:53
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The eruption plume height detected by the OMPS lidar (image: NASA)
According to the Ozone Mapping and Profiler Suite (OMPS) lidar-based satellite, measuring the global distribution of ozone as a remote sensing method, it seems the
eruption column height has been measured up to 30 km meaning that reached the stratosphere level.
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Sun, 16 Jan 2022, 23:58
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Video screenshot from tsunami affect in Peru (image: @BNONews/twitter)
Tsunami waves continue to hit the Pacific Ocean coastal countries. Several countries of the South American and Japan reported entering elevated water streams into streets, bays and ports.
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Sun, 16 Jan 2022, 16:45
Sun, 16 Jan 2022, 09:30
Sun, 16 Jan 2022, 03:07
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The current shape of Hunga Tonga-Hunga Ha'apai volcano (image: @planet/twitter)
Recent satellite images show dramatic and significant morphological changes in the volcano's shape during the recent activity. Judging from the latest image after today's massive eruption (16 January) and comparing to previous images from 17 November and 7 January, it seems that most of the island is destroyed.
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The volcano's shape from 7 January (image: @planet/twitter)
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The volcano's shape from 17 November (image: @planet/twitter)
Sun, 16 Jan 2022, 02:28
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High-resolution imagery of the eruption seen from space (image: Dakota Smith/twitter)
The tsunami, generated by the violent eruption today, has been traveling across vast stretches in the Pacific Ocean.
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