BackgroundYasur, the best-known and most frequently visited of the Vanuatu volcanoes, has been in more-or-less continuous strombolian and vulcanian activity since Captain Cook observed ash eruptions in 1774. This style of activity may have continued for the past 800 years. Yasur, located at the SE tip of Tanna Island, is a mostly unvegetated 361-m-high pyroclastic cone with a nearly circular, 400-m-wide summit crater. Yasur is largely contained within the small Yenkahe caldera and is the youngest of a group of Holocene volcanic centers constructed over the down-dropped NE flank of the Pleistocene Tukosmeru volcano. The Yenkahe horst is located within the Siwi ring fracture, a 4-km-wide, horseshoe-shaped caldera associated with eruption of the andesitic Siwi pyroclastic sequence. Active tectonism along the Yenkahe horst accompanying eruptions of Yasur has raised Port Resolution harbor more than 20 m during the past century.
(source: Global Volcansim Project)
Exploding lava bubble at an active vent in the crater of Yasur volcano, Vanuatu (Sep 2014) (Photo: Walter Reis)
Yasur volcano tours:Volcanoes and Cultures - Adventures in the South Sea (15-day volcano and photo expedition to Ambrym and Yasur volcanoes, Vanuatu)Dream Come True - World Volcano Tour (4-week round-the-world trip to Hawaii - Vanuatu - New Zealand - Indonesia)
See also: Sentinel hub | Landsat 8