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Which volcanos have lava lakes? I have seen multiple sites saying there are five volcanos, but the five volcanos listed differ. This page has Erta Ale, Mount Erebus, Kīlauea, Nyiragongo, Marum (Ambrym), but then there is a link lower down to the page for Villarrica, which says that that there are five volcanos and Villarrica is one of them. I also have a reference that lists a similiar five to this page but with Marum replaced with Masaya. I suspect some of these volcanos (maybe Erta Ale, Erebus, and Kīlauea) have relatively permanent lava lakes while the others come and go. Perhaps it should be broken into two seperate lists. Wingedsubmariner (talk) 01:24, 20 November 2011 (UTC)[reply]
Good thoughts. That's the first I've heard of Masaya. Our article speaks of it having "an occasionally lava-filled pit crater", which is confirmed here. --Avenue (talk) 13:42, 20 November 2011 (UTC)[reply]
Ambryn and Villarica also both have intermittent lava lakes (specifically, months or years with and without lava lakes during the last decade). In contrast, Erte Ale and Erebus have had persistent lava lakes for decades. I'm less clear about Nyiragongo and Kileauea, but they seem to have reasonably persistent lava lakes too. I'll split the list of volcanoes into ones with persistent versus recent intermittent lava lakes accordingly. --Avenue (talk) 14:54, 21 November 2011 (UTC)[reply]
I've expanded the list, mainly based on the eruptive activity reports from the Global Volcanism Program website, and organized it into five categories:
current/persistent
recent/intermittent
unconfirmed
suggested by remote-sensing data
past
to Avenue: Some authors[1] make a disctintion between persistent lava lakes and lava pools/ponds, but I'm not sure about the status of the lava lakes we have listed as recent/intermittent in our table. With so few examples of this amazing phenomenon, I don't know if there is a clear commonly accepted/used classification or something like this...
As regards the Masaya volcano, I had the chance to go there during a "lava lake activity period" and, alhough the lava lake itself wasn't directly visible from the observation spot on the edge of the crater, you could clearly see the glow coming from the lava lake (at dusk). A great experience ! --Wikiwanito (talk) 13:24, 6 May 2012 (UTC)[reply]
Before reading this discussion, I added Villarrica to the top list, because several sources mention it as one of only five lava lakes in the world. I now see that its status is in question. Someone who knows more than I do can change it back, if appropriate. HowardMorland (talk) 20:13, 25 May 2012 (UTC)[reply]
I don't think Villarrica fits (at least for the moment) into the "persistent" category, as lava lake activity has only been observed (intermittently) since 1996[2]. And I'm not sure I'd consider www.environmentalgraffiti.com as a reliable source in the matter. I suggest to remove it from this list (it will still be mentionned in the table below, along with other volcanoes featuring recent lava lake activity, such as Ambrym, in Vanuatu). Wikiwanito (talk) 21:43, 25 May 2012 (UTC)[reply]
References
^Tazieff, H. (1994). "Permanent lava lakes: Observed facts and induced mechanisms". Journal of Volcanology and Geothermal Research. 63: 3–2. doi:10.1016/0377-0273(94)90015-9.
Alava lakeatMount Nyiragongo, a volcano found in Virunga National Park in the Democratic Republic of the Congo. Lava lakes, which can form in three different ways, are large volumes of molten lava, usually basaltic, contained in a volcanic vent, crater, or broad depression. Persistent lava lakes such as the one at Nyiragongo, which is the largest to appear in recent times, are rare.Photograph: Cai Tjeenk Willink
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