A team of geologists mapped the earthquake environmental effects (EEEs) of the two M6+ events that occurred at the Greek Island of Cephalonia on 26 January and 3 February, 2014. G. Papathanassiou, A. Ganas, S. Valkaniotis, M. Papanikolaou and S. Pavlides participated in these field campaigns. George Papathanassiou sent me the preliminary report today. The team found widespread evidence for “liquefaction, road-fill failures, rock falls, small landslides and stonewall failures“. more
The latest issue of Annals of Geophysics is devoted to Earthquake geology: science, society and critical facilities. Vol 56 (6) is a Special Volume, and I am proud to say it’s our volume! Finally, 14 papers are included in this issue, most of them authored by early career researchers (ECRs). The papers are based on work presented at the 2nd INQUA meeting on Active Tectonics, Earthquake Geology, Archaeology and Engineering in Corinth, Greece, 2011. The issue was edited by Christoph Grützner, Salvatore Barba, Ioannis Papanikolaou and Raul Pérez-López and all papers are open access! more
On 26 January and 3 February, two strong and shallow earthquakes of magnitude 6+ occured at the island of Kefalonia/Cephalonia in Western Greece. The events caused intense damage to buildings and infrastructure. A team of EERI (Earthquake Engineering Research Institute) scientists went to the island to map these kind of damages. Earthquake Environmental Effects (EEE) like rockfalls, landslides, and lateral spreading were also caused by the events. George Papathanassiou and his colleagues mapped these features and sent me the following photos from Lixouri. more
Two earthquakes of magnitude M6+ occured near the island of Kefalonia in Western Greece on 26 January and 3 February, 2014. Both were shallow strike slip events that are associated with the Kefalonia transform fault and caused not only damages to buildings and infrastructure, but also significant earthquake environmental effects (EEEs). Here I compile some photo and video sources from rockfalls and other features. more
Besides the two special issues on tsunamis and paleoearthquakes that I’ve already blogged about, some more interesting papers on paleoseismology have recently been published. They deal with paleoseismology of the North Anatolian Fault, with tectonic geomorphology of S Spain, and with the ESI scale applied on a quake in Kashmir. more
After the 1st Iberfault meeting in 2010, the 2nd meeting will take place in Lorca, Spain from 22-24 October, 2014. Any research on active tectonics and paleoseismology in Iberia is welcome, a special focus will be set on the QUAFI database. The conference will be organized by José Martinez Díaz (UCM), Eulàlia Masana (UB) and Miguel A. Rodríguez (IGME). Lorca became famous in 2011 when a shallow MW5.1 earthquake killed 9 people and caused severe damages in the city (there is an ongoing discussion whether or not groundwater lowering for irrigation during the last decades has caused, triggered, or influenced the quake).
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A special issue on “Geology and Archaeology of Earthquakes” has currently been published in Cuaternario y Geomorfología (Quaternary and Geomoprhology, ISSN: 0214-1744), which is the official journal of the Spanish Quaternary Union (AEQUA) and the Spanish Geomorphological Society (SEG): Vol 27, No 3-4 (2013) – Geología y Arqueología de Terremotos. The issue includes an introduction and ten research papers on earthquake geology and archaeoseismology of the Iberian Peninsula. Most papers are in English, few in Spanish. more
An interesting paper has been published in Nature Geoscience by Murphy et al.: Limit of strain partitioning in the Himalaya marked by large earthquakes in western Nepal. It doesn’t happen too often that paleoseismological papers are published in this journal and it’s also not too often that authors publish such beautiful photos. The authors identified a more than 60 km long rupture in W Nepal with 10 m of surface offset (strike-slip with a normal component). 14C dating points to seismic activity between AD 1165 and 1400. That’s pretty surprising for many reasons: more
On 15 October, 2013 a shallow Mw7.1 earthquake occured in Bohol, Philippines. The quake caused more than 200 fatalities and severe damages. Instrumental intensities of VIII – IX were recorded and the USGS estimates the maximum slip to be around 120 cm. Stéphane Baize from the French IRSN created a report not only on the seismological and tectonic background of the earthquake, but also on the earthquake environmental effects (EEEs) that were caused by the event. more
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). more
