Editing Mount Agung (section)

== History of eruptions ==

=== 1843 eruption ===

Agung erupted in 1843,<ref>{{cite web |url=http://hl-128-171-57-22.library.manoa.hawaii.edu/bitstream/10125/7320/1/vol19n4-498-501.pdf |title=Pioneer Plants Found One Year After the 1963 Eruption of Agung in Bali |date=October 1965 |author=Anwari Dilmy |publisher=Pacific Science, Vol. XIX |access-date=27 November 2017 }}</ref> as recorded in a report by [[Heinrich Zollinger]]:

{{blockquote|text="After having been dormant for a long time, this year the mountain began to be alive again. In the first days of the activity earthquake shocks were felt after which followed the emission of ash, sand and stones."<ref>{{cite web |url=http://www.volcanolive.com/agung.html |title=Agung Volcano |author=John Seach |publisher=Volcano Live |access-date=27 November 2017 }}</ref>}}

=== 1963–64 eruption ===
The eruption of 1963 was one of the largest and most devastating eruptions in Indonesia's history.

On February 18, 1963, local residents heard loud explosions and saw clouds rising from the crater of Mount Agung. On February 24, [[lava]] began flowing down the northern slope of the mountain, eventually traveling 7&nbsp;km in the next 20 days. On March 17, the volcano erupted ([[VEI 5]]), sending debris 8 to 10&nbsp;km into the air and generating massive [[pyroclastic flow]]s.<ref name="esdm">
{{cite web
| url = http://www.vsi.esdm.go.id/volcanoes/agung/geology.html
| title = Geology of Mt. Agung
| archive-url = https://web.archive.org/web/20080327031557/http://www.vsi.esdm.go.id/volcanoes/agung/geology.html
| archive-date= 2008-03-27
| publisher = Pusat Vulkanologi & Mitigasi Bencana Geologi&nbsp;– VSI.  
| access-date = 2010-11-20
}}</ref>
These flows devastated numerous villages, killing an estimated 1,100–1,500 people. Cold [[lahar]]s caused by heavy rainfall after the eruption killed an additional 200. A second eruption on May 16 led to pyroclastic flows that killed another 200 inhabitants. Minor eruptions and flows followed and lasted almost a year.<ref name="cna-Agung">{{cite web |url=http://www.channelnewsasia.com/news/asiapacific/once-tremors-detected-bali-volcano-can-erupt-within-hours-9269148 |title=Once tremors detected, Bali volcano can erupt within hours: Volcanologist |date=3 October 2017 |author=Pichayada Promchertchoo |publisher=CNA |access-date=27 November 2017 }}</ref><ref name="adsabs">
{{cite journal
| bibcode = 1964BVol...27..269Z
| title = Preliminary report on the 1963 eruption of Mt.Agung in Bali (Indonesia)
| journal = Bulletin Volcanologique
| volume = 27
| issue = 1
| pages = 269–299
| last1 = Zen| first1 = M. T.
| last2= Hadikusumo |first2=Djajadi
| date=December 1964
| publisher = The SAO/NASA Astrophysics Data System
| doi= 10.1007/BF02597526
| s2cid = 128691551
}}</ref>

The lava flows missed, sometimes by mere meters, the [[Mother Temple of Besakih]]. The saving of the temple is regarded by [[Balinese people|Balinese]] as miraculous and a signal from the gods that they wished to demonstrate their power but not destroy the monument that the Balinese had erected.<ref>{{Cite journal|last1=Gertisser|first1=R.|last2=Deegan|first2=F. M.|last3=Troll|first3=V. R.|last4=Preece|first4=K.|date=2018|title=When the gods are angry: volcanic crisis and eruption at Bali's great volcano|url=https://onlinelibrary.wiley.com/doi/abs/10.1111/gto.12224|journal=Geology Today|language=en|volume=34|issue=2|pages=62–65|doi=10.1111/gto.12224|s2cid=134991685 |issn=1365-2451|url-access=subscription}}</ref>

During the eruptions and earthquakes, the wreck of the US transport ship, [[USAT Liberty]], which had been grounded at nearby [[Tulamben]] during [[World War II]] after being torpedoed by a Japanese submarine, slipped off the beach and settled totally underwater.

[[Andesite]] was the dominant lava type with some samples [[mafic]] enough to be classified as [[basaltic andesite]].<ref>Self, S., and M.R. Rampino, 2012: The 1963–1964 eruption of Agung volcano (Bali, Indonesia). Bull. Vulcanol., 74, 1521–1536</ref> The eruption had global effects on temperatures.<ref>{{Cite journal|last1=Ivanov|first1=M.|last2=Evtimov|first2=S.|date=2009-09-03|title=1963: The break point of the Northern Hemisphere temperature trend during the twentieth century|journal=International Journal of Climatology|language=en|volume=30|issue=11|pages=1738–1746|doi=10.1002/joc.2002|issn=1680-7316}}</ref>
<ref>{{Cite journal|last1=Anstey|first1=J.|last2=Mitchell|first2=D.|last3=Gray|first3=L.|last4=Mehta|first4=S. K.|last5=Hibino|first5=T.|last6=Fujiwara|first6=M.|date=2015-12-09|title=Global temperature response to the major volcanic eruptions in multiple reanalysis data sets|journal=Atmospheric Chemistry and Physics|language=en|volume=15|issue=23|pages=13507–13518|doi=10.5194/acp-15-13507-2015|issn=1680-7316|bibcode=2015ACP....1513507F|doi-access=free|hdl=2115/60660|hdl-access=free}}</ref>

=== 2017–2019 seismic activity and eruption ===
[[File:Mount Agung, November 2017 eruption - 27 Nov 2017 02.jpg|thumb|Mount Agung erupting on 27 November 2017]]

{{Main |2017–2019 eruptions of Mount Agung}}
In late 2017, the area experienced 844 volcanic earthquakes, peaking at 300 to 400 earthquakes on 26 September. The frequency and intensity of these quakes caused much alarm among [[seismologist]]s, as similar volcanoes have historically been known to erupt with even fewer warning signs.<ref name="cna-Agung"/><ref>{{Cite news|url=https://www.theguardian.com/world/2017/sep/26/bali-volcano-eruption-seismic-activity-mount-agung|title=Bali volcano eruption could be hours away after unprecedented seismic activity|last=Lamb|first=Kate|date=2017-09-26|work=The Guardian|access-date=2017-09-26|language=en-GB|issn=0261-3077}}</ref> Alert was raised to the highest level and about 122,500 people were evacuated from their houses around the volcano.<ref>{{cite news|title=Indonesian official: More than 120,000 flee Bali volcano |publisher=Fox News|date=28 September 2017}}</ref> The [[Indonesian National Board for Disaster Management|Indonesian National Disaster Management Authority]] declared a 12-kilometre exclusion zone around the volcano on 24 September.<ref>{{cite web|url=http://www.theaustralian.com.au/news/world/thousands-evacuated-as-bali-volcano-sparks-fear/news-story/7a323056f5e512345575a14cf4e1f213|title=Thousands evacuated as Bali volcano sparks fear|date=24 September 2017|agency=[[The Australian]]}}</ref>

Evacuees gathered in sports halls and other community buildings around [[Klungkung]], [[Karangasem Regency|Karangasem]], [[Buleleng]], and other areas.<ref>{{Cite news|url=http://ubudhood.com/mount-agung-facts/|title=Mount Agung: facts about Bali's imminent volcano eruption|date=September 23, 2017|work=UbudHood|access-date=November 1, 2017|language=en-US}}</ref> By late October 2017, the activity of the volcano decreased significantly, leading to lowering of the highest status of emergency on 29 October.

On 21 November, activity increased once again. A [[phreatic eruption]] took place, with the [[ash cloud]] top reaching {{Convert|3842|m|ft}} above sea level.<ref>{{Cite web |url=https://magma.vsi.esdm.go.id/vona/display?noticenumber=2017AGU15 |title=Volcano Observatory Notice For Aviation: Agung 20171121/0939Z |publisher=MAGMA Indonesia |access-date=27 November 2017 |archive-url=https://web.archive.org/web/20180630000620/https://magma.vsi.esdm.go.id/vona/display?noticenumber=2017AGU15 |archive-date=30 June 2018 |url-status=dead }}</ref> Thousands of people immediately fled the area,<ref name="BBC">{{Cite news |url=https://www.bbc.com/news/world-asia-42070362 |title=Bali's Mount Agung volcano erupts |date=2017-11-21 |publisher=BBC News |access-date=2017-11-21 }}</ref> and over 29,000 temporary refugees were reported to be housed in over 270 locations nearby. Early on Saturday 25 November a [[magma]]tic eruption 
began.<ref name="vd-25-11-17">{{Cite news|url=https://www.volcanodiscovery.com/agung/news/66181/Gunung-Agung-volcano-Bali-Indonesia-eruption-has-begun.html|title=Gunung Agung volcano (Bali, Indonesia): eruption has begun|date=2017-11-25|work=Volcano Discovery|access-date=2017-11-26|language=en-GB}}</ref> The resulting eruption [[Eruption column|plume]] was reported to rise about 1.5–4&nbsp;km above the summit crater, drifting towards the south and dusting the surroundings with thin layer of dark ash, leading some airlines to cancel flights bound for Australia and New Zealand. An orange glow was later observed around the crater at night, suggesting that fresh magma had indeed reached the surface.<ref>{{Cite news|url=http://metro.co.uk/2017/11/27/get-out-now-100000-people-told-as-bali-volcano-continues-to-spew-ash-7110690/|title='Get out now' 100,000 people told as Bali volcano continues to spew ash|date=2017-11-27|work=Metro|access-date=2017-11-27|language=en-GB}}</ref> On 26 November 2017, another eruption occurred, the second in less than a week.<ref name="vd-25-11-17" /> [[Ngurah Rai International Airport]] was closed 26 November 2017,<ref>{{cite web |url=http://www.channelnewsasia.com/news/asiapacific/mount-agung-eruption-bali-airport-closed-flights-cancelled-9443114 |title=Mount Agung eruption: Bali airport closed, flights cancelled |date=27 Nov 2017 |author=Saifulbahri Ismail |publisher=CNA |access-date=27 November 2017 }}</ref> leaving many tourists stranded. [[Lahar]]s were reported in the [[Karangasem Regency|Selat district]] south of the volcano.<ref>{{Cite news|url=http://www.viva.co.id/berita/nasional/981801-lahar-dingin-gunung-agung-sapu-sawah-jadi-tontonan-warga|title=Locals Watch As Lahars From Mount Agung Sweep Away Rice Fields|date=2017-11-27|work=VIVA Indonesia|access-date=2017-11-27|language=id}}</ref> More than 100,000 people in a {{convert|10|km|mi|abbr=on|sigfig=1}} radius of the volcano were ordered to evacuate.<ref name=BBC42132912>{{cite news |url=https://www.bbc.co.uk/news/world-asia-42132912 |title=Mount Agung: Bali volcano alert raised to highest level |publisher=BBC News |date=27 November 2017 |access-date=27 November 2017}}</ref>

Australia's Bureau of Meteorology reported on 27 November that ash from the eruption had been observed at an altitude of 9,144 m.<ref>{{Cite web|url=http://media.bom.gov.au/releases/398/volcanic-ash-update-for-mount-agung/|title=Volcanic ash update for Mount Agung|date=2017-11-27|website=Australian Government Bureau of Meteorology|language=en|access-date=2017-11-27}}</ref> By the beginning of December, the eruption reduced to minor emissions of steam and smoke. On 12 December, a picture of the crater was taken showing a steadily growing [[lava dome]] occupying approximately one third of the crater.<ref>{{cite web|url=https://www.volcanodiscovery.com/agung/news/66532/Gunung-Agung-volcano-Bali-Indonesia-flat-lava-dome-occupying-summit-crater.html|publisher=Volcano Discovery|title=Agung volcano news & activity updates|date=2017-12-13}}</ref>

In June 2018, Agung erupted with 2&nbsp;km high plumes interrupting air traffic. On 3 July, a [[Strombolian]] explosion occurred, sending debris in all directions.<ref>{{cite web |title=700 flee 'thunderous' explosions and lava as Mount Agung erupts again |url=http://www.abc.net.au/news/2018-07-03/mt-agung-erupts-again-in-bali-indonesia/9935190 |publisher=ABC News|location=Australia |access-date=6 September 2018 |language=en-AU |date=3 July 2018}}</ref> In late May 2019 an eruption spewed lava and rocks over about 3&nbsp;km, with some ash falling on nearby villages and temporarily interrupting international flights.<ref>{{cite news |title=Mount Agung: Flights resume after Bali volcano disruption |publisher=BBC News |date=25 May 2019 |url=https://www.bbc.com/news/world-asia-48408385 |access-date=25 May 2019}}</ref>