Lake Kussharo in winter. Note that the lake is not frozen. Image courtesy Ten via YouTube.
This is the second of three posts on the East Hokkaido Caldera Field. This post is centered on the Kutcharo (Kussaro or Kuttyaro) volcanic complex.
Boat cruising in the Amalia fjord to obtain ground cores in search of tephra from the Reclus volcano, to prove a recent activity which could be related to the dynamics of the Amalia glacier. 07/2014 (© Godiespi, via Wikimedia)
Seeing that SERNAGEOMIN recently has included the Reclus volcano into group III of the assessment of their volcanoes, according to hazards they may pose to the population, I had another go at finding out more about it. Continue Reading
Volcan Toliman (center right), Atitlan (far right) from Volcan San Pedro (foreground). Note cinder cone on northern flank of Toliman. Lake Atitlan in the foreground and to the left of the photo. Heavily vegetated lava flows on the near flanks and north facing flanks of Toliman. Village in the center foreground. North is to the left of the photo. Lake Atitlan fills about half the Atitlan III caldera. Image courtesy DIY Travel HQ
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Is it really 5 years…? Indeed! Background image: Announcement for our new VH blog in February 2015. Logo pinched from… um… the Indeed Brewing Company)
We find that our blog has been alive, growing and changing for 5 years, which has surprised us, as we didn’t think it was that long. Many, many thanks to you, our readers, for your loyalty, your interest, support and comments. Continue Reading
Mashu caldera in winter with Kamuinupuri to the right of the photo and the Kamuishu dome in the middle of the lake. Image courtesy Wiki
The Toya – Usu post led me to the interesting volcanic history of Hokkaido, Japan. Found a multiple caldera complex in eastern Hokkaido with three calderas in close proximity to one another. Will write about these for the next few posts.
Erosional structures at Göreme, central Cappadocia Region. The tuff is thought to have been deposited by the Mount Erciyes eruption ~2.6 ma, covering an area of about 20,000 km². This was the last of the series of great Cappadocian ignimbrites. (© Claude Valette, via Wikimedia)
In many descriptions of volcanoes and their eruption histories we stumble upon the terms Tuff, Tufa or Ignimbrite. Most every self-respecting volcano has one or all of them. Generally it becomes obvious from the context that they refer to widespread deposits of volcanic materials. But what exactly is an ignimbrite?, is it different to tuff?, and where do they all come from?
Tuff and ignimbrite are clastic rocks composed of volcanic Continue Reading
Schematic of location of Nov 30 Anchorage earthquake. Image courtesy Temblor.net
Intro: I wrote this some 12 months ago, a couple months after our M7.1 intraplate earthquake here in Anchorage. This seems a good time to revisit what happened and why. As usual, there are more questions afterwards than before. Cheers –
Fujisan
You may be about 90 and no longer able to travel the volcanoes of the world; you may be a young student lacking the funds as well as the friends willing to climb your favourite volcano with you; you may be an inveterate couch potato, or, you just want to spend some relaxing armchair time during the holiday season – don’t despair! Continue Reading
View from Los Aguajes in the east of Volcán Ceboruco. (© Juan Castillo Campos, via mapio.net)
As so often, and generally without intention, I have hit upon yet another volcano that has all the trimmings of a beast but seems not really to be recognised as such. Up to a few years ago there have been very few studies to find out about the seismological and structural properties of the volcano. Volcán Ceboruco is considered among the five volcanoes with the highest risk in Mexico, and the second most active after Colima volcano in the western Trans-Mexican Volcanic Belt. Yet, scientists had to point out, in a 2016 study, “that every effort should be made to monitor its seismic activity”. Continue Reading
Galileo 1998 image of Io. This one shows two active plumes. Pillan Patera plume is at the upper limb of the moon. It is 140 km tall. Second active plume is Prometheus Patera center bottom near the terminator between dark and light
Spica
