The M7.8 Kaikoura Earthquake in New Zealand produced one of the most complex ruptures ever observed, involving many different faults. Earthquake environmental effects include up to 10 m offset at the Kekerengu Fault, secondary ruptures, a tsunami, coseismic uplift, landslides and rockfalls, liquefaction, and maybe even earthquake lights. Lots of blogs and websites provide coverage on this earthquake, e.g. Geonet, the Landslide Blog, and The Trembling Earth. Our colleagues from the Research Group on Earthquake Geology in Greece worked on the landslides that happened during the earthquake. George Papathanassiou sent me the link to their Preliminary Map of Co-Seismic Landslides for the M 7.8 Kaikoura, New Zealand Earthquake. Continue reading “Preliminary Map of Co-Seismic Landslides for the M 7.8 Kaikoura, New Zealand Earthquake”
While the attention is still on the seismic sequence in Italy, a number of new papers have been published on paleoseismology, tsunamis, and active tectonics. Enjoy reading!
Our friend and colleague Alessandro Michetti pointed me to this impressive video. It shows the surface ruptures of the 30 October earthquake from a helicopter: Continue reading “Italy earthquake: aerial view of the surface ruptures”
Our colleague Paolo Galli is in the epicentral area of the M6.6 Italy earthquake and he sent us some amazing images. I’ll just reproduce them here without further comment, they speak for themselves. Captions by Paolo. Thanks a lot Paolo, and stay safe! Continue reading “Earthquakes in Italy: Field photos by Paolo Galli”
On 26 October two shallow normal faulting earthquakes occurred in Central Italy, very close to the epicentre of the Amatrice Earthquake from earlier this year. The first quake reached a magnitude of M5.5 and was followed by a M6.1 just two hours later. The events caused serious damage (see here for a video and some images), but luckily only one person died as most people had left their houses after the first moderate shock. This could have turned out much worse. Apparently the quakes at least partly filled the gap between the 1997 Colfiorito events and the 2016 Amatrice Earthquake. Continue reading “Earthquakes in Italy: first InSAR data and field reconnaissance”
The EMERGEO Working Group has conducted extensive field work after the 24 August 2016 Amatrice Earthquake in Italy and put together a report on the coseismic effects. The report is in English and can be downloaded from the INGV earthquake Blog here: PDF (6.1 mb)
The report includes data on environmental earthquake effects like surface ruptures, fractures, landslides, and rockfalls. More than 2400 data points have been collected.
Please cite the report as follows:
- EMERGEO Working Group (2016). The 24 August 2016 Amatrice Earthquake: Coseismic Effects. doi: 10.5281/zenodo.61568
The EMERGEO Working Group consists of Pucci S., De Martini P.M., Nappi R., Pantosti D., Civico R., Ricci T., Moro M., Cinti F., Brunori C.A., Di Naccio D., Sapia V., De Ritis R., Gori S., Falcucci E., Caciagli M., Pinzi S., Villani F., Gaudiosi G., Burrato P., Vannoli P., Kastelic V., Montone P., Carafa M., Patera A., Vallone R. (all INGV) and Saroli M., Lo Sardo L., Lancia M. (University of Cassino and southern Lazio).
Thanks to Francesca Cinti for pointing me to this!
A special session on the Amatrice Earthquake of 24 August in Italy was held at the Congress of the Geological Society of Italy (Naples, 7 September, 2016). A video of the entire session is now available online. Although the talks are in Italian, it is easy to understand and the slides tell the story.
There will be a Special Session on the Amatrice Earthquake of 24 August at the Congresso Società Geologica Italiana, 7 September, 2016, in Napoli. See http://www.sginapoli2016.it/home/ for the congress details.
Il terremoto del centro Italia del 24 agosto 2016 7 settembre 2016, ore 20.00, Aula tbd
Chairmen: Carlo Doglioni, Alessandro Maria Michetti
- 20.00 – INGV Amatrice working group : La sequenza sismica di Amatrice 2016
- 20.10 – Bonano M., Castaldo R., Casu F., De Luca C., De Novellis V., Lanari R., Manunta M., Manzo M., Pepe A., Pepe S., Tizzani P., Zinno I. : Deformazione superficiale associata al terremoto del centro Italia del 24 agosto 2016: primi risultati da interferometria radar dallo spazio
- 20.20 – Lavecchia G., Brozzetti F., Boncio P., de Nardis, Cirillo, Ferrarini: controllo strutturale sulla sequenza sismica di Accumoli 2016 – analisi preliminare
- 20.30 – Blumetti A.M., Bonadeo L., Brunamonte F., Comerci V., Cowie P., Di Manna P., Ferrario M.F., Faure Walker J., Frigerio C., Fumanti F., Gregory L., Guerrieri L., Iezzi F., Livio F., McCaffrey K., Michetti A.M., Mildon Z., Phillips R., Piccardi L., Pompili R., Rhodes E., Roberts G., Vittori E., Walters R.J., Wedmore L., Wilkinson M. : Rotture al suolo ed effetti ambientali associati al terremoto del centro Italia del 24 agosto 2016: risultati preliminari e work in progress.
- 20.40 – Galli P. et al. : Distribuzione dell’intensità macrosismica e implicazioni sismotettoniche del terremoto del centro Italia del 24 agosto 2016:
- 20.50 – Amanti M. : Eventi franosi nell’area epicentrale del terremoto di Amatrice.
We would like to bring your attention to a workshop we are organizing on the topic of Fault Displacement Hazard Analysis (FDHA). The Workshop will be held December 8-9th at the U.S. Geological Survey Campus in Menlo Park, CA, and is timed to be the Thursday and Friday before the 2016 AGU Fall meeting so that international participants can plan to attend both the Workshop and AGU the following week.
Workshop themes will include: Continue reading “Fault Displacement Hazards Workshop, Dec 8-9th, 2016 (and AGU Fall meeting session)”
Ruptured pebbles are frequently found near and along active faults. At RWTH Aachen University Christopher Weismüller has just finished his MSc thesis on ruptured pebbles in southern Spain. There, the NE-SW trending Carboneras Fault System meets the N-S trending Palomares Fault and ends. Continue reading “Ruptured pebbles – ever found one?”