View over the caldera of Nemrut Dağı. (© Emin Noyan; screengrab from GEarth photo)
The spectacular caldera of Nemrut Dağı: light snow cover enhances all the volcanic features inside. (NASA image ISS001-E-6354 taken on 2001.02.13)
I have started work on this post long before the latest unacceptable political developments, so, it is pure coincidence that it’s getting published just now. In the region around Nemrut Dağı live Kurdish, Turkish and Armenian people. I wish peace for them all – and hopefully, my post will inspire interest in this wonderful part of the world.
Nemrut Dağı* volcano has so many interesting features within and outside its caldera that it would probably take a several-week-long holiday do visit and explore them all. It has produced many colourful layers in ignimbrites during its various, mainly Plinian eruptions, as well as lava domes and obsidian flows, open fissures, steam chimneys, lava caves, what have you. I think this will become my favourite volcano! Continue Reading
Tecuamburro volcano: View across Laguna Ixpaco towards the S, with the lava dome Cerro Peña Blanca in the background. (© Oscar Villarreal, via former Panoramio)
About everybody knows that Guatemala has three very active volcanoes: Fuego, Pacaya and Santa Maria’s dome Santiaguito – but did you know that a staggering 324 eruptive centers have been identified in that country?
“Vulkan Papandajan auf Java” (1905). Painting by the German zoologist and naturalist Ernst Haeckel (1834-1919).
G. Papandayan seen from the north. Complete mountain range on the left; zoom into the main crater with the head scarp of the 1772 collapse on the right. (© GMaps)
Papandayan is the volcano you can actually see on satellite images (e.g. Google Earth) even from a view point 800 km above ground – it is the white patch of a collapse scar that stands out in stark contrast from the dark green forest. The volcano sits at the southern end of the Kendang-Papandayan mountain range.
G. Papandayan is generally said to be 2665 m high but there seems to be some confusion as to location and actual height Continue Reading
When the news reported multiple volcanoes erupting in Vanuatu – when new volcanoes appeared near Tonga Islands – when earthquakes shook most of Melanesia left right and center – I have often wondered if, or why, there are no volcanoes on the Fiji Islands? Well, you probably guess the answer – of course there are! They are just not very busy at the moment, so they may escape our attention, and may lull the residents in false security, too. The three that are mentioned by the GVP are Taveuni and Koro Islands, and Nabukelevu which occupies the SW end of Kadavu Island. Continue Reading
“The island of Ischia seen from the sea, showing volcanic features”. Coloured etching by Pietro Fabris, 1776. (Iconographic Collections at Wellcome Images)
Ischia (pronounced: ‘Is-kyah) is a densely inhabited volcanic island in the Bay of Naples, on the mid-southwestern coast of Italy, some 30km from the Naples mainland. Most people know that the island of Ischia is of a volcanic nature. Many of them believe that it is just another extinct volcanic cone, layers over layers of lava, piled up throughout distant eruptive periods. Not so! The interesting thing is that it’s not your off-the-shelf volcano grown from a seamount before emerging above the sea surface. Ischia has a distinctly different geological history compared to the island volcanoes we know from subduction zones. And, of course, it is not extinct. Continue Reading
View from Green Mountain across volcanic cinder cones, with Sisters Peak towering over the little town of Two Boats. (© BBC)
“The 7th June anno 1656. Att evening wee arrived att Ascention and anchored on the NW side of the iland. On our rightt hand was a faire sandy bay Continue Reading
The Southwest side of Avachinsky Volcano 09/2014 (© kuhnmi via Wikimedia)
Although I have known that the Avachinsky is one of the more active volcanoes in Kamchatka, somehow I habitually tended to skip it when checking webcams and reports for new activity in Kamchatka – I saw forever this owl face, this snow-covered, never-changing mountain… That has changed since I came across this wonderful diary by a 19th century German-Baltic geologist and explorer, K. v. Ditmar. He had lived and worked 1851-55 in Petropavlovsk, at the foot of two magnificent volcanoes. Although he didn’t manage to get to the crater – bad weather, strong gas emissions and superstitious company made him abandon two attempts – he loved volcanoes! Continue Reading
(© Ryszard Chajęcki, R/V Petrel)
In our post about Tinakula’s October 2017 eruption I wrote: “This island is so remote that exiting news of an eruption may come through within a few days, but we will probably never learn when, how, or if at all the eruption has ended.”
Well, officially the eruption seems to have ended on 26 October 2017, as listed by the GVP. However, National Situation Reports by the NDMO appeared up into the first week of November; a volcanic assessment on Tinakula on Nov. 5 showed numerous eruptions Continue Reading
Volcano Coropuna is Peru’s largest and highest volcano and is part of the Cordillera de Ampato. 6/2015. (© Huaylas te Invita, via Wikimedia). The view is – my educated guess – from the SW via Laguna Pallarcocha in the foreground.
At the end of last year Peruvian volcanologists had made an announcement that installing a permanent monitoring system to this high-risk volcano was finished… wait, high risk?… I never knew that Nevado Coropuna was that dangerous, more reason to get acquainted with this volcano. Please meet my newest friend: Continue Reading
Aerial view of Mayotte: Petite Terre, with Grande-Terre in the background. Aug. 2018. (© Gil40100, via tripadvisor.com)
On the morning of November 11, just before 9:30 UTC, many seismographs around the world began scribbling a strange signal that looked only remotely like a normal earthquake. Someone spotted it, and it didn’t take long until, in the social media, tinhattery boiled over the rim and attention-seekers had a heyday. Continue Reading