Annals of Geophysics Vol. 55 – Active Tectonics in the Mediterranean and Europe

Annals of Geophysics’ latest Special Issue 55-5 is focussed on Earthquake Geology: Active tectonics in the Mediterranean and Europe: site studies and application of new methodologies. This issue was edited by L. Cucci, P. M. De Martini, E. Masana, and K. Vanneste and contains seven papers. As always, all articles are open access. Continue reading “Annals of Geophysics Vol. 55 – Active Tectonics in the Mediterranean and Europe”

New paper on active faulting in Greece

A new paper was just published on Active faulting in the north-eastern Aegean Sea Islands. Our colleague Alex Chatzipetros and his co-authors investigated the distribution of seismicity and faulting pattern at the islands of Lemnos, Aghios Efstratios, Lesvos, Chios, Samos and Ikaria. From this data and field analyses they concluded on the effects of active faulting on the local geomorphology. Continue reading “New paper on active faulting in Greece”

What’s up? The Friday links (46)

For me the most important geo news this week was the court decision on the L’Aquila trial on Monday. A local court sentenced six scientists and one official for manslaughter to six years in prison – 2 years more than claimed by the prosecutor. Even though the scientists may not have found the best words to describe the earthquake hazard in L’Aquila, the decision is ridiculous in my opinion and caused an outcry throughout the scientific community. Especially the consequences for any risk assessment and public information might be fatal. I am really concerned. In the following I link to some blog posts that I found particularly interesting:

Continue reading “What’s up? The Friday links (46)”

Inside a fault

In September, Klaus and me lead a MSc student excursion to southwestern Germany. We not only went through the entire stratigraphy of that area (mainly Triassic and Jura), but also visited the salt mine in Stetten, quarries in Dotternhausen (opalinus clay, posidonia schist, Malm), the Kaiserstuhl carbonatite volcano complex and the Upper Rhine Graben area. One of my personal highlights was the Freudenstädter Graben, a small tectonic graben striking NW-SE, whose NE main fault is exposed in an old mine in Hallwangen. Continue reading “Inside a fault”

What’s up? The Friday links (45)

Nature published three articles on the Sumatra April 2012 mega-strike-slip earthquakes. I am pretty sure that at least one of them will be discussed intensely. Earlier this year, two earthquakes with magnitudes of M8.6 and M8.2, respectively, occurred in the Indian Ocean off Sumatra. The epicentres were close to the epicentral area of the 2004 Christmas event, but further to the SW and entirely on the Indo-Australian plate. This was surprising for many reasons: We did not expect such strong strike-slip quakes, we did not expect them to happen intraplate, and we were surprised by the complex en echelon and orthogonal fault pattern.  Continue reading “What’s up? The Friday links (45)”

Primary Fault – Science meets fiction, geophysics meet fantasy

It’s holiday season, and many avid readers might need an advice on new books. Here’s one for the earthquake community: Primary Fault by Sharon Kae Reamer. The title reminds you of geology? This is no coincidence. The author reminds you of geology? Right! Sharon Kae Reamer is a seismologist, currently working at the seismological observatory of Cologne University. You probably know her work when you are into archaeoseismology, seismicity in Germany, or seismotectonics. Now she has published her first novel, and seismology does play a role. Continue reading “Primary Fault – Science meets fiction, geophysics meet fantasy”

What’s up? The Friday links (40)

On 11 April 2012, a Mw8.6 strike-slip earthquake occurred off Sumatra in a kind of intra-plate setting and came as a surprise to the earthquake community. Such a strong strike-slip event was not expected, we always thought that the huge thrust quakes at subduction zones were the only ones to release that much energy. Now a press release by CalTech reports on the latest studies that came to the result that many previously unknown perpendicular faults ruptured at this event. Immediately some journalists suggested that this might also happen at the San Andreas Fault. I do not know of any paleoseismological evidence that this has happened there before. However, how likely is this scenario?

Link to the paper: An earthquake in a maze: compressional rupture branching during the April 11 2012 M8.6 Sumatra earthquake. Continue reading “What’s up? The Friday links (40)”

Paleoseismological trench at the Finale Emilia earthquake site

A paleoseismological trench has been opened at San Carlo – Sant’Agostino. At this place, liquefaction features and other environmental earthquake effects were recognized after the Finale Emilia earthquake of 2 May 2012, magnitude MW6.1. The trench reveals normal fault features close to the surface. Our colleague Alex Chatzipetros from Earthquake Geology of Greece posted a great article on the trench work and has all the interesting photos. Continue reading “Paleoseismological trench at the Finale Emilia earthquake site”