One of the great privileges of working on volcanoes is that you get the chance to visit some amazing places, and to meet some extraordinary people. Recently, I got the chance to return to Montserrat, a small volcanic island in the Caribbean which has been the site of a dome-forming eruption since July 1995. I had first visited Montserrat in early 1998, when I had a short tour as one of the staff s ...[Read More]
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GeoLog
Geosciences Column: Predicting glacial lake outburst floods
In this month’s Geosciences Column, Amanda Gläser-Bligh writes about SAR (synthetic aperture radar) satellites and how they can be used to map glacier lakes and mitigate related flood hazards. Glaciers are a natural storage system and provide a perennial source of fresh water to the surrounding low-lying areas, which can be used for drinking water, irrigation, or even hydroelectricity. But when gl ...[Read More]
Geology for Global Development
Friday Photo (51) – Loess Collapse/Subsidence
Heifangtai, Gansu Province, China: Collapse in Loess Deposits Ground collapse/subsidence in China, most likely caused by movement of water through the loess deposits from the high relief in the right of this picture, to the low relief in the left of the picture. The scale of the collapse can be seen in relation to the man at the forefront. (c) Geology for Global Development, 2012 For other images ...[Read More]
Geology for Global Development
Lessons from China (3) – Geotourism, A Case Study
In September 2012 I travelled to the Gansu Province of China to take part in the First International Symposium for New Techniques for Geohazards Research and Management. Over the past couple of weeks, I’ve been highlighting a number of issues, lessons and experiences from this trip. You can read the short archive of this series here. Future posts will examine areas relating to geohazards, di ...[Read More]
GeoLog
Imaggeo on Mondays: Volcano in the tropics
The text of this week’s Imaggeo on Mondays comes from the photographer himself, Brenner Silva. I took this picture from an airliner in September 2010 on my way to the Estación Científica San Francisco, South Ecuador, for field work. The flight route Quito-Loja goes through the two highest volcanoes, Chimborazo and Cotopaxi, of the so-called Avenue of the Volcanos in Ecuador. The pilot, attracted b ...[Read More]
GeoLog
Imaggeo on Mondays: Cloud sandwich
Lenticular clouds, also known as ‘flying saucer clouds’ or ‘cloudships’, have captured the imagination of humans since Biblical times. Normally aligned at right-angles to the direction of the wind, lenticular clouds are stationary, lens-shaped formations that form at high altitudes. Pilots of powered planes tend to avoid flying near lenticular clouds because of turbulence. Glider pilots, on the ot ...[Read More]
GeoLog
EGU Twitter Journal Club: Article 3 – Tree-height data and carbon storage
It’s time for the third edition of the EGU’s Twitter Journal Club, our interactive online discussion about a timely scientific article. If you have not yet taken part in one of these discussions, read more about it in our introductory post and make sure to participate on this third edition! This time, we will be discussing an article recently published in the EGU’s Open Access j ...[Read More]
GeoLog
GeoTalk: Dr Giuliano Di Baldassarre
GeoTalk, featuring short interviews with geoscientists about their research, continues this month with a Q&A with Dr Giuliano Di Baldassarre (UNESCO-IHE Institute for Water Education) regarding his work on floods, population changes, and risk prevention. If you’d like to suggest a scientist for an interview, please contact Bárbara Ferreira. First, could you introduce yourself and let us ...[Read More]
GeoLog
Imaggeo on Mondays: Keanae coast
Geologically speaking, Hawaii is a very dynamic archipelago. Each of its islands is an exposed peak of a large undersea mountain range formed by volcanic activity starting about 28 million years ago as the Pacific plate moved slowly in northwest direction over a geological hotspot in the Earth’s mantle. Big Island and Maui, the southeastern most islands, are therefore the youngest and geologically ...[Read More]
VolcanicDegassing
An update on Santorini
As you may have heard by now, Santorini volcano has recently been showing some unrest. Of course, it has only just come to the attention of the media, some of which have taken things a little further than can be justified. But for those of us involved in the work, this is a story which has taken rather longer to piece together. In my own case, the story started 26 years ago this week, when I firs ...[Read More]