Sometimes it is not easy to understand (or explain) how seismic waves propagate through Earth. Recently, a number of very nice graphic examples have been uploaded on vimeo.com. The videos show the basic concepts of a travelling seismic wave such as the propagation of waves from a central source (similar to the ripples in a pond after a stone …[Read More]
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GeoLog
Geosciences Column: The quest for life on Mars
Understanding where we come from and whether Earth is the only habitable planet in the Solar System has been a long standing conundrum in science. Partly because it is our nearest neighbour, partly because of its past and current similarities with our own home, Mars, the red planet, is a likely contender in the quest …[Read More]
VolcanicDegassing
Landslides, lake tsunamis and the tragedy of Lago Cabrera
Fifty years ago, on 19th February 1965, a rock and ice landslide fell from the summit face of Volcan Yate in southern Chile. It was mid-summer, and was one of the warmest and wettest February records in that part of Chile on record. The debris slid rapidly down a narrow gully, losing at least 1500 metres in elevation, …[Read More]
Geomorphology
Our EGU session died, what went wrong?
Have you ever had this experience? You develop a session which you think could be such a great platform or a subject that definitely interests a lot of people and then only a few people register…this happened to Jan, me, and several others this year and our proposed sessions (GM1.2 Emerging research fields in geomorphology and GM …[Read More]
GeoLog
Science Policy Fellowship at the EGU – open for applications!
Do you have an interest in science policy and the geosciences? Then this fellowship might be just right for you! EGU fellowships offer early career researchers the opportunity to gain experience in science management and communication in a large scientific union through a targeted assignment at the EGU Executive Office in Munich, Germany. Fellows are …[Read More]
Soil System Sciences
Soils at Imaggeo: Gypsum concretions in a soil horizon
Antonio Jordán, University of Seville, Sevilla, Spain Most Gypsisols are formed when gypsum (calcium sulfate) from gypsiferous parent materials is dissolved and moves through soil water, precipitating in an accumulation soil horizons. Triassic rock outcrops in almost all Andalusia consist mainly of red and variegated clays and in some cases by clays of different colors …[Read More]
Energy, Resources and the Environment
Words on Wednesday: Global trends in extreme precipitation – climate models versus observations
Words on Wednesday aims at promoting interesting/fun/exciting publications on topics related to Energy, Resources and the Environment. If you would like to be featured on WoW, please send us a link of the paper, or your own post, at ERE.Matters@gmail.com. *** Asadieh, B. and Krakauer, N. Y.: Global trends in extreme precipitation: climate models versus observations, Hydrol. Earth Syst. Sci., …[Read More]
GeoLog
Imaggeo on Mondays: A Patagonia landscape dominated by volcanoes
Imagine a torrent of hot and cold water, laden with rock fragments, ash and other debris hurtling down a river valley: this is a lahar. A by-product of eruptions of tall, steep-sided stratovolcanoes, lahars, are often triggered by the quick melting of snow caps and glaciers atop high volcanic peaks. The history of the Ibañes …[Read More]
Soil System Sciences
Monday paper: Short-term changes in soil Munsell colour value, organic matter content and soil water repellency after a spring grassland fire in Lithuania
Pereira P, Úbeda X, Mataix-Solera J, Oliva M, Novara A: Short-term changes in soil Munsell colour value, organic matter content and soil water repellency after a spring grassland fire in Lithuania. Solid Earth, 5, 209-225. DOI: 10.5194/se-5-209-2014. Abstract Fire is a natural phenomenon with important implications on soil properties. The degree of this impact depends upon …[Read More]
Soil System Sciences
Monday paper: Thermal shock and splash effects on burned gypseous soils from the Ebro Basin (NE Spain)
León J, Seeger M, Badía D, Peters P, Echevarría T: Thermal shock and splash effects on burned gypseous soils from the Ebro Basin (NE Spain). Solid Earth, 5, 131-140. DOI: 10.5194/se-5-131-2014. Abstract Fire is a natural factor of landscape evolution in Mediterranean ecosystems. The middle Ebro Valley has extreme aridity, which results in a low plant …[Read More]