Letusan dan tsunami Hunga Tonga 2022: Perbedaan antara revisi
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== Aktivitas vulkanik ==
Setelah cenderung tidak aktif sejak 2014,<ref>{{cite news|first=Aina J.|last=Khan|title=Tsunami Reported in Tonga After an Underwater Volcano Eruption|date=15 January 2022|newspaper=The New York Times|url=https://www.nytimes.com/2022/01/15/world/asia/tonga-volcano-tsunami.html|access-date=15 January 2022}}</ref> gunung berapi [[Hunga Tonga]] meletus pada 20 Desember 2021 dengan mengirimkan partikulat ke stratosfer dan gumpalan abu besar yang terlihat dari ibu kota [[Tonga]] [[Nuku'alofa]] (sekitar 70 km dari gunung berapi).<ref name=MT2021a/>
[[Berkas:G17 sector tsp GEOCOLOR 24fr 20220115-0412.gif|
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Sebuah letusan besar yang bermula pada 14 Januari mengirimkan awan abu sejauh 20 kilometer ke atmosfer. Pemerintah Tonga mengeluarkan peringatan tsunami kepada warga.<ref name="RNZ 1">{{cite news |title=Underwater volcano Hunga-Tonga-Hunga-Ha'apai erupts again |url=https://www.rnz.co.nz/international/pacific-news/459572/underwater-volcano-hunga-tonga-hunga-ha-apai-erupts-again |access-date=15 January 2022 |work=[[Radio New Zealand]] |date=14 January 2022 |archive-date=14 January 2022 |archive-url=https://web.archive.org/web/20220114115608/https://www.rnz.co.nz/international/pacific-news/459572/underwater-volcano-hunga-tonga-hunga-ha-apai-erupts-again |url-status=live}}</ref> Geologiwan Tonga di dekat gunung berapi mengamati ledakan dan kolom abu selebar 5 kilometer.<ref>{{cite web |url=https://matangitonga.to/2022/01/15/tongan-geologists-stunning-Jan14eruptions |title=Tongan geologists observe stunning eruptions at Hunga |publisher=Matangi Tonga |date=15 January 2022 |access-date=15 January 2022 |archive-url=https://web.archive.org/web/20220115054357/https://matangitonga.to/2022/01/15/tongan-geologists-stunning-Jan14eruptions |archive-date=15 January 2022}}</ref>
Baris 45:
Serangkaian ledakan terdengar sekitar pukul 3:30 di [[Anchorage]], Alaska, dan sekitarnya sekitar 9.700 km dari gunung berapi dan berlangsung sekitar 30 menit. Kebisingan frekuensi rendah bertahan selama kurang lebih dua jam.<ref>{{cite news|first=Annie|last=Berman|newspaper=Anchorage Daily News|date=16 January 2022|access-date=17 January 2022|title=Volcano eruption near Tonga causes booms heard by Alaskans nearly 6000 miles away|url=https://www.adn.com/alaska-news/science/2022/01/15/volcano-eruption-near-tonga-causes-booms-heard-by-alaskans-nearly-6000-miles-away/|archive-date=16 January 2022 |archive-url=https://web.archive.org/web/20220116084124/https://www.adn.com/alaska-news/science/2022/01/15/volcano-eruption-near-tonga-causes-booms-heard-by-alaskans-nearly-6000-miles-away/|url-status=live}}</ref> Ledakan terdengar di seluruh Selandia Baru hingga [[Yukon]] di [[Kanada]].<ref name="Smith">{{cite news|author1=Oli Smith|title=Tonga tsunami: Satellite footage shows moment of volcanic shockwave - apocalyptic scenes|url=https://www.express.co.uk/news/world/1550449/Tonga-tsunami-volcano-eruption-video-satellite-footage-American-Samoa-evacuation-vn|access-date=15 January 2022|publisher=Daily Express|date=15 January 2022|archive-date=15 January 2022|archive-url=https://web.archive.org/web/20220115155102/https://www.express.co.uk/news/world/1550449/Tonga-tsunami-volcano-eruption-video-satellite-footage-American-Samoa-evacuation-vn|url-status=live}}</ref><ref>{{cite web|url=https://www.cbc.ca/news/canada/north/noise-from-underwater-volcanic-eruption-across-the-pacific-heard-in-the-yukon-1.6316510|title=Noise from underwater volcanic eruption across the Pacific heard in the Yukon|date=15 January 2022|publisher=Canadian Broadcasting Corporation|website=cbc.ca|last=Carroll|first=Luke|access-date=16 January 2022|archive-date=15 January 2022|archive-url=https://web.archive.org/web/20220115190844/https://www.cbc.ca/news/canada/north/noise-from-underwater-volcanic-eruption-across-the-pacific-heard-in-the-yukon-1.6316510|url-status=live}}</ref>
[[File:Hunga Tonga eruption 2022-01-15 4000Z-0850Z GOES-17.gif|thumb|240px|Gelombang kejut rekaman dari [[NOAA]]]]
Dari luar angkasa, [[kolom letusan]] yang sangat lebar dan gelombang kejut tertangkap menyebar melintasi Samudra Pasifik oleh satelit.<ref name="Smith"/> Gelombang tekanan diukur oleh stasiun cuaca di seluruh Selandia Baru pada amplitudo maksimum sekitar 7 [[hPa]].<ref>{{cite web|date=2022-01-15|title=A pressure surge from the latest eruption of the Hunga-Tonga-Hunga-Ha'apai volcano in Tonga has been observed in our weather stations across the country this evening. Note, times are in UTC, so 06:00 UTC is 19:00 NZ Time.|url=https://twitter.com/metservice/status/1482247777891799042|url-status=live|access-date=2022-01-15|website=Twitter|archive-date=2022-01-16|archive-url=https://archive.today/20220116083050/https://twitter.com/metservice/status/1482247777891799042|dead-url=no}}</ref> Gelombang tekanan juga direkam oleh stasiun cuaca di Australia, dengan amplitudo sebesar 6,9 hPa diukur di [[Pulau Lord Howe]] dan amplitudo sebesar 3,3 hPa di [[Perth]], Australia Barat.<ref>{{Cite tweet|number=1482592498992427009|user=BOM_au|title=Bureau data shows the shockwave from Hunga Tonga-Hunga Ha'apai volcanic eruption travelled at over 1000 km/h and was recorded as a noticeable jump in atmospheric pressure across Australia. By the time it reached Perth it had travelled almost 7,000 kilometres.|author=Bureau of Meteorology, Australia|date=16 January 2022|archive-date=17 January 2021|archive-url=https://archive.today/20220117050228/https://twitter.com/BOM_au/status/1482592498992427009}}</ref><ref>{{cite web|last1=Grubb|first1=Ben|last2=Noyes|first2=Jenny |last3=Han|first3=Esther|date=15 January 2022|title=Waves crash into Tonga homes as tsunami warnings sound across the Pacific|url=https://www.smh.com.au/world/oceania/footage-shows-waves-crashing-into-homes-as-tsunami-warning-sounds-in-tonga-20220115-p59ohh.html|url-status=live|access-date=15 January 2022|newspaper=The Sydney Morning Herald|archive-date=15 January 2022|archive-url=https://web.archive.org/web/20220115155103/https://www.smh.com.au/world/oceania/footage-shows-waves-crashing-into-homes-as-tsunami-warning-sounds-in-tonga-20220115-p59ohh.html}}</ref><ref>{{cite tweet|number=1482282515616645123|user=Ben_Domensino|title=This is phenomenal. It appears the atmospheric pressure waves created by the #Tonga #volcano have been detected on Australia's east coast. This graph shows MSLP fluctuating in Sydney around the same time satellite images showed the pressure wave reaching eastern Australia.|archive-date=16 January 2022|archive-url=https://archive.today/20220117045518/https://twitter.com/Ben_Domensino/status/1482282515616645123}}</ref><ref>{{cite tweet |number=1482312272479686659|user=Ben_Domensino|title=The pressure wave was also detected in #Perth, WA around 6:30pm AWST, some 6,900km away from the Hunga Tonga-Hunga Haʻapai volcano.|date=15 January 2022}}</ref> Fluktuasi tekanan sebesar 2,5 hPa diukur di [[Swiss]] dan lebih dari 2 hPa ketika mencapai [[Britania Raya]].<ref>{{cite tweet|author=Jörg Kachelmann|user=Kachelmann|date=15 January 2022|access-date=15 January 2022|title=Unglaublich: Die Druckwelle aus #Tonga ist gerade in der Schweiz angekommen, 2,5 hPa Ausschlag. |number=1482441437216133127}}</ref><ref>{{cite tweet|author=UK Met Office|user=metoffice|date=16 January 2022|access-date=16 January 2022|title=Our atmosphere acts as a fluid, like dropping a pebble in a still pond and seeing the ripples. A UK pressure trace for the past 24 hours shows how our atmosphere continues to see those ripples since the first pressure wave from the #Tonga eruption arrived on Saturday evening.|number=1482605906659622914}}</ref> [[Survei Geologi Amerika Serikat]] mencatat magnitudo gelombang permukaan letusan tersebut yaitu 5,8 [[skala kekuatan momen|M<sub>w</sub>]].<ref name="ANSS5.8"/> Gelombang kejut dilaporkan telah mengelilingi bumi sebanyak empat kali di [[Jepang]] dan [[Utah]],<ref>{{Cite web|title=トンガ火山噴火による衝撃波が地球1周して再来か 今朝も各地で気圧変化|url=https://weathernews.jp/s/topics/202201/170085/|access-date=2022-01-18|website=ウェザーニュース|language=ja|archive-date=17 January 2022|archive-url=https://web.archive.org/web/20220117143238/https://weathernews.jp/s/topics/202201/170085/|url-status=live}}</ref><ref>{{Cite tweet|link=no|number=1483203330646024201|user=cataclasite|title=Sure looks like we got a fourth passage of the Hunga Tonga – Hunga Ha'apai eruption shockwave in Utah. Timing is spot-on and signal is similar to previous passages. Interesting for sure but worried for the people of Tonga.|author=Michael Bunds}}</ref> dan sedikitnya dua kali di [[New England]].<ref>{{Cite web|last=Burnett|first=A. J.|date=2022-01-16|title=Weather instruments around southern New England detect Hunga Tonga shockwave|url=https://www.wcvb.com/article/weather-instruments-around-southern-new-england-detect-hunga-tonga-shockwave/38784108|access-date=2022-01-18|website=WCVB|language=en|archive-date=16 January 2022|archive-url=https://web.archive.org/web/20220116222313/https://www.wcvb.com/article/weather-instruments-around-southern-new-england-detect-hunga-tonga-shockwave/38784108|url-status=live}}</ref>
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