Lahars at Volcan de Fuego, Guatemala. This image captures a lahar [mudflow] deposit close to Volcan de Fuego. These deposits are formed when rain mobilises ash and pyroclastic material on the volcano to form a fast moving, powerful mudflow with the ability to transport material including large boulders. As the energy dissipates, the sediment is deposited as we see above. Difficult to see in this i ...[Read More]
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GeoLog
EGU 2015: Call-for-papers is now open!
From now, up until 7 January 2015, you can submit your abstract for the upcoming EGU General Assembly (EGU 2015). In addition to established scientists, PhD students and other early career researchers are welcome to submit abstracts to present their research at the conference. Further, the EGU encourages undergraduate and master students to submit abstracts on their dissertations or final-year pro ...[Read More]
Between a Rock and a Hard Place
Lakes and lahars at Mt Ruapehu
Mt Ruapehu is the largest mountain on the North Island of New Zealand. As well as being a popular ski resort, Ruapehu is an active andesitic stratovolcano. Formed approximately 200,000 years ago, activity is currently confined to the Crater Lake vent; this deep depression fills with water from snow melt between eruptive episodes. Similarly to the recent eruption of Mount Ontake in Japan, Ruapehu h ...[Read More]
GeoSphere
I’m on TV!!
About a year ago I was asked to appear as a guest on a kids television show about rocks and minerals called Finding Stuff Out. I was asked to come an talk about rocks, minerals, geology in general and how I got interested in geology. The show is for 8-10 year olds and it is truly fantastic! It has a really interesting format where kids actually ask questions and the host, Harrison, answers them wi ...[Read More]
Seismology
EGU2015: Call-for-Papers
EGU is very pleased to announce the start of the Abstract submission for the EGU General Assembly 2015 (EGU2015), 12 Apr 2015 – 17 Apr 2015, Vienna, Austria. The sessions are now online: http://meetingorganizer.copernicus.org/EGU2015/sessionprogramme Submitting an abstract is intuitive: For each session there is a link Abstract Submission followed by logging in the system. Abstracts may be s ...[Read More]
Seismology
Call for IASPEI medal nomination
The International Association of Seismology and Physics of the Earth’s Interio (IASPEI) is calling for nominations for the IASPEI medal. The award of a IASPEI medal has been decided during the 2011 General Assembly in Melbourne. The first IASPEI Medal recipient was Robin Adams. The IASPEI medal is awarded for merits in seismology: for sustaining IASPEI goals and activities and for scientific ...[Read More]
GeoLog
Imaggeo on Mondays: Fresh breakout in the lava fields
Kate Dobson was a volunteer at the Hawaii Volcano Observatory (HVO) in 2001/02 and revisited the stunning Big Island in 2006. During her holidays Kate ventured out to the coastal section of the Pu’uO’o lava flow field and captured this spectacular image of a fresh lava breakout. The Pu‘u ‘Ō‘ō vent is in the East Rift Zone of Kīlauea Volcano and began erupting on January 3, 1983, and has continued ...[Read More]
Between a Rock and a Hard Place
Science Snap (#33): Earth Science Week
James Hickey is a PhD student in the School of Earth Sciences at the University of Bristol. A geophysicist and volcanologist by trade, his PhD project is focussed on attempting to place constraints on volcanic unrest using integrated geodetic modelling. Earth Science Week is an international initiative to promote the great work that goes on in the geoscience community. It encompasses a huge range ...[Read More]
GeoLog
The known unknowns – the outstanding 49 questions in Earth Sciences (Part IV)
We are coming to the end of the known unknowns series and so far we have explored issues which mainly affect the inner workings of our planet. Today we’ll take a look at the surface expression of the geological processes which shape the Earth. Topography significantly affects our daily life and is formed via an interplay between primarily tectonics and climate, but it also affected by biological, ...[Read More]
Geology for Global Development
Images of Guatemala (2) – Pyroclastic Flow Deposits
Pyroclastic Flow Deposits close to Volcan de Fuego, Guatemala. The scale of these deposits, formed in 2012, can be seen against the scale of the person standing in the background [dark line, just above the red shrub]. Pyroclastic flows, alongside lahars, are two of the most significant and destructive volcanic hazards associated with Volcan de Fuego. You can read more about Fuego and its secondary ...[Read More]