GeoLog

Natural Hazards

Imaggeo on Mondays: Damavand Volcano

Damavand Volcano, Iran. A nice cap cloud can be seen at the top of the mountain. Cap cloud is an orographic cloud that is formed over a mountain peak, formed by the cooling and condensation of moist air climbing up and over the peak. Cap clouds appear to remain stationary. Image by Mostafa Ganjian, distributed by EGU under a Creative Commons License. Commentary by Konstantinos Kourtidis. Imaggeo i ...[Read More]

Grímsvötn eruption and the importance of research

This perspective on the Grímsvötn eruption and volcanic activity, ash transport and ash detection comes from Dr Mike Burton. Dr Burton is a Senior Researcher at the Istituto Nazionale di Geofisica e Vulcanologia, Pisa, Italy. His research includes utilising novel gas and video imaging techniques to better understand volcanic processes. At the EGU General Assembly 2011, he convened GMPV5 Monitoring ...[Read More]

Grimsvötn eruption observations from the field

This description on the Grímsvötn eruption comes from Dr Olgeir Sigmarsson, an Icelandic volcanologist who is Director of Research, CNRS at the Laboratoire Magmas et Volcans, Observatoire de Physique du Globe de Clermont-Ferrand. He also works at the Institute of Earth Sciences, University of Iceland. His research is on geochemistry: genesis, chronology and evolution of magma. Dr Sigmarsson has be ...[Read More]

Grímsvötn volcanic eruption

The Grímsvötn volcano in Iceland started erupting on 21 May 2011. Icelandic airspace was closed soon after with flights now being affected in the United Kingdom. This post brings together some good sources of imagery and information. These sources are not endorsed by the European Geosciences Union, more a resource letting people know what is available. If you know of a good source of information, ...[Read More]