Volcano Calendar 2018: We're proud to present our 2018 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Volcán Wolf, straddling the equator on the northern end of Isabela Island is the highest volcano of the Galápagos archipelago. The 1710-m-high volcano has steeper slopes than most other Isabela volcanoes, reaching angles up to 35 degrees.
Map of lava flows during the current eruption (IGPEN)
The eruption in the Galapagos islands continues strongly from the effusive vent inside the caldera, near its southern rim. ...more
A detailed report by the Ecuadorian Geophysical Institute confirms that the current intra-caldera activity must have started between including 13-16 June, likely from a new fissure vent near or on the southern caldera rim. Lava flows from this vent have been covering the 1982 lavas in the the S and SE part of the caldera floor. The lava flows from the first phase of the eruption, emitted by an eruptive fissure that ran parallel and just outside the SE and E caldera rim, seem to have stopped being alimented at around the same time the new actity began inside the caldera.
Lava flows on the eastern flank as observed on 12 June during a field survey (IGPEN)
Lava flow in the early stage 28 May seen by Earth Observing-1 satellite (IGPEN / NASA)
The eruption that started 4 weeks ago continues strongly, but from the location of the origin of the thermal signal it seems that since around 13 June, the eruption has been occurring from vents inside the vast summit caldera rather than from the fissure vents that opened on the upper ESE flank on 25 May. ...more
This could be because the dike (the fissure inside the edifice serving as pathway for the magma) that fed the original eruption has simply propagated into the caldera floor, or because an entirely new dike, hence a simultaneous second eruption has occurred. As judging from the thermal signal, the eruption continues with increased strength since mid June. [less]
While no direct confirmation has been available from ground observations since 30 May, it seems plausible to assume, from satellite observations, that the eruption still continues and that the lava flow on the southeast flank of Wolf is still active and its front reaches near or into the sea. ...more
Image of the eruption 26 May evening (image: Xavier Garcia / Parque Nacional Galapagos / facebook)
As of yesterday evening, the eruption has decreased a lot in intensity. Lava fountaining at the 1 km fissure vent had essentially stopped. The lava flows, still far from the sea, were only weakly alimentated and advancing slowly.
Lava fountains and lava flows from Wolf volcano yesterday evening (Galapagos National Park)
The eruption continues with strong lava fountains from the eruptive fissure and large lava flows advancing southeast. An aerial survey by the National Park staff confirmed that none of the main habitats of the local endemic fauna is threatened. In particular, the Island of Isabela is home to the Galápagos pink land iguana (iguana rosada), native only to the northern part of Isabela Island (around Wolf volcano). ...more
Below are some images showing the eruption, probably from 25 May evening, provided by the Galapagos National Park.
Image of Wolf volcano's eruption on 25 May 2015 (Ecuador TV / twitter)
As day breaks on the archipelago, the first images start to emerge and media pick up on the spectacular eruption. ...more
From images it seems that a large effusive-explosive eruption is occurring. Tall lava fountains produce an immense ash plume that rises to up to 45,000 ft (14 km) altitude, if the estimations by VAAC Washington are correct. At the same time, several lava flows descend from the vent(s), likely a fissure on the volcano. [less]
A large eruption might have started at the largest volcano of the Galapagos Islands - Volcán Wolf on the northern end of the archipelago's biggest island Isabela. ...more
Updates Starting this morning at 08:04 UTC, Washington Volcanic Ash Advisory Center (VAAC) has issued several alerts of ash plumes reaching up to 35-50,000 ft from the volcano, based on GOES-EAST satellite imagery. [less]
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