The oceans are a big contributor to the global carbon cycle, with phytoplankton taking up carbon through photosynthesis and incorporating it into their shells. When these organisms die their shells sink and make a calcareous contribution to seafloor sediments. Of course, with the formation of limestone, this carbon is locked out of the atmosphere for long periods of geological time. Until recently ...[Read More]
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GeoLog
GeoTalk: Suzanne Hangx on Carbon Capture & Storage
Today in GeoTalk, we’re talking to Suzanne Hangx, who explains the great potential of carbon capture and storage and the challenges emerging technologies, like CCS, face. First, could you introduce yourself and let us know what drew you to geomechanics? Let’s start with the introduction: I’m Suzanne Hangx and I currently work as a researcher on geomechanics for subsurface storage containment techn ...[Read More]
GeoLog
GeoTalk: Simon Mudd
Today in GeoTalk, we’re talking to Simon Mudd, an exceptional and forward-thinking geomorphologist. First, could you introduce yourself and let us know a bit about what you are currently working on? I am lecturer in Landscape Dynamics at the University of Edinburgh, where I have been since 2007. Before that I was a post-doc at Vanderbilt University, in Nashville Tennessee. I received my PhD from V ...[Read More]
GeoLog
Muon musings – how penetrating particles could let us peer beneath Mars’ surface
Muons are penetrating particles generated by cosmic rays. Muon radiography – or muography – is the large-scale equivalent of using x-rays to generate images. Except, instead of using x-rays to take a closer look at your broken arm, we can use showers of muons to take a look inside large geological structures – we’re talking several kilometres in size here! When cosmic rays meet the atmospher ...[Read More]
GeoLog
Geosciences Column: Tracing Toba
Large volcanic eruptions have a significant impact on the Earth’s climate as aerosols (including sulphur dioxide and water vapour), together with ash are released into the atmosphere and increase the amount of sunlight reflected back into space (the albedo). This increase in reflectance (or decrease in energy absorption) can cause widespread climatic cooling, known as a ‘volcanic winter’. However, ...[Read More]
GeoLog
GeoTalk: Xavier Fettweis
Today in GeoTalk, we’re talking to Xavier Fettweis, an award-winning climate scientist from the University of Liège. He tells us about his work on the Greenland ice sheet. First, could you introduce yourself and let us know a bit about your current projects at the University of Liège? As a child, I was already interested by the meteorology thanks to a small weather station installed at my parents’ ...[Read More]
GeoLog
GeoTalk: Encarnación Ruiz-Agudo
GeoTalk is a regular feature highlighting early career researchers and their work. Today we’re talking to Encarnación Ruiz-Agudo whose specialty lies in crystal growth and dissolution – the key to how rocks tell their stories! First, could you introduce yourself and let us know a bit about your current research? Also, what sparked your interest in crystallography and mineralogy? My name is Encarna ...[Read More]
GeoLog
Geosciences Column: Larvae, Climate and Calcification
The absorption of atmospheric CO2 by the oceans results in a decline in ocean pH, hence ‘ocean acidification’, and reduces the availability of carbonate. This presents a problem to calcifying organisms (those that deposit calcium as either calcite or aragonite as hard parts) because they cannot produce their shells, valves (in the case of bivalves), or tests (in the case of diatoms) as readily. To ...[Read More]
GeoLog
GeoTalk: Robin Andrews
This month in GeoTalk, we spoke to Robin Andrews, a PhD candidate at the University of Otago, New Zealand, who takes us through the explosive aspects of one of Geology’s most thrilling disciplines – volcanology. First, could you introduce yourself and let us know a little about your work and what drew you to volcanology? Ah, introductions! Well, I’m Robin Andrews, a British postgraduate volcanolog ...[Read More]
GeoLog
GeoTalk: Alexis Rouillard
GeoTalk is a regular feature highlighting early career researchers and their work. Following the EGU General Assembly, we spoke to Alexis Rouillard, an Arne Richter Outstanding Young Scientist awardee and a brilliant space scientist. First, could you introduce yourself and let us know a bit about your current work at the French National Centre for Scientific Research? Hi, I am Alexis Rouillard and ...[Read More]