On 24 September a shallow M7.7 earthquake rattled Pakistan. At least 300 people died and thousands of houses, most of them adobe, collapsed in Balochistan Province. The quake was felt as far away as Muscat (Oman) and New Delhi (India). Epicentral intensities reached up to IX. The earthquake appeared to be a strike slip event. Soon the media reported on an amazing effect of the quake – in roughly 400 km distance a new island appeared few hundred meters off Gwadar. Continue reading “A mud volcano as an Earthquake Environmental Effect?”
A new article on archaeoseismology appeared yesterday in Geoarchaeology’s Early View section. In this paper, Karabacak and colleagues present archaeoseismological evidence in the Roman stadium of ancient Kibyra (southwest Turkey). Earthquake archaeological damage includes surface faulting, systematically collapsed columns, dilated and collapsed walls, as well as rotated and displaced blocks. Their study suggests that a previously unknown seismic event (Io = VIII-IX) may have struck this region of Turkey around the 10-11 th century AD. Continue reading “New archaeoseismology paper in Geoarchaeology”
Dear friends and colleagues,
it’s only few days to go until the PATA Days conference will start with the icebreaker party at the Kuckucksnest in Aachen! We have more than 100 registered participants and we are looking forward an exciting meeting. If you attend the first two days 9-10 October, don’t forget to book a hotel in Aachen on your own, it’s time now.
You don’t have a hotel yet? Check out this pdf: Hotels and Travel.
Working on spatial data is the key feature of being a geoscientist and a lot of this work is done using ArcGIS from ESRI. QGIS was always an alternative especially looking at the costs of a full ESRI license. But when it comes to “making maps” QGIS was always behind ArcGIS in map formatting and export. The map composer was more or less … ugly and not state of the art. Continue reading “QGIS 2.0 released – watch out ESRI!”
It’s time to revive the Friday Links tradition, I just realized that it fell asleep in March…
A paper published in Science few hours ago deals with the energy release of one of the strangest mega-quakes that we have ever observed, the M8.3 Okhotsk event of 24 May 2013. The interesting thing is that is occurred in more than 600 km depth! In the same issue of the journal another paper describes attempts to perform analogue experiments of such events in the lab. If you just want to get a rough idea about the studies or have no access to science, I recommend to check out Andrew Alden’s article at kqed science. Continue reading “What’s up? The Friday links (58)”
A new paper by Esposito et al. has been published in Springer’s Landslide Science and Practice that will help to better constrain intensities on the ESI scale. Landslides induced by twelve moderate to strong earthquakes events during the last 300 yrs have been analyzed. The authors calculated distance vs. magnitude and distance vs. ESI epicentral intensity relationships, similar to the famous correlations by Keefer (1984). Continue reading “Earthquake-induced landslides in the Appennines – distance versus magnitude and ESI epicentral intensity”
The latest issue of the Seismological Research Letters (SRL) has at least three papers dealing with topics interesting for paleoseismologists.
Hinzen et al. studied the rotation of objects (e.g., monuments) during the L’Aquila earthquake of 2009. They scanned the rotated objects with a high-res laser scanner, built discrete-element-models from the data and simulated the shaking necessary to cause the deformation. The results help to better estimate earthquake parameters from earthquake archaeological effects (EAEs).