ISPRA volume “Earthquake Environmental Effect for seismic hazard assessment: the ESI intensity scale and the EEE Catalogue”

Earthquake Environmental Effects (EEE) have proven to be valuable for describing past earthquakes and their geological imprints. The ESI2007 is a relatively new intensity scale dedicated to such effects, but also integrating traditional macroseismic scales. Examples of ESI2007 intensities assigned to large earthquakes are being collected in the EEE web catalogue hosted by the ISPRA and ESI2007-related work is conducted in the framework of INQUA.

Another milestone now has been achieved with the ISPRA volume “Earthquake Environmental Effect for seismic hazard assessment: the ESI intensity scale and the EEE Catalogue”. This book is now available online here. It contains updates on the ESI2007, examples of applications, documentation of the EEE Android App, a huge reference list and, most importantly, the ESI2007 description in ten languages: Continue reading “ISPRA volume “Earthquake Environmental Effect for seismic hazard assessment: the ESI intensity scale and the EEE Catalogue””

This was the Fucino15 meeting – part I

Phew, this was an intense week and a great one too! The Fucino15 meeting on paleoseismology, active tectonics and archaeoseismology is over and hopefully everyone safely arrived back home. Here’s a brief report on some of the science that happened at the meeting. Since we had ~50 oral presentations, only an overview is possible here. In the following days I’ll add more details about the field trips. A big thank you to the Italian organizing team who did an amazing job – grazie mille! Continue reading “This was the Fucino15 meeting – part I”

New report on the Napa Earthquake available, update on amount of afterslip

Downtown Napa

Our colleague Tim Dawson from the California Geological Survey (CGS) pointed me to this website, where reports and data on the Napa Earthquake of 24 August, 2014, are collected. There is a new document available for download, the EERI report at the top of the page, which adds some previously unpublished information, especially on the observed afterslip. Tim writes that “afterslip along the central 6-7 km of the rupture is about 35 cm (whereas it was initially only about 20 cm the day of the earthquake).” The afterslip seems to be still ongoing and is monitored with InSAR. Continue reading “New report on the Napa Earthquake available, update on amount of afterslip”

1st circular out now for the 6th INQUA paleoseismology workshop in Fucino, Italy, 19-24 April 2015

The 6th INQUA workshop on Active Tectonics, Paleoseismology and Archaeoseismology will be held from 19-24 April, 2015, in Pescina, Fucino Basin, Italy.

We will remember the centenary of the 1915 M7 Fucino earthquake, that was one of the largest and most devastating earthquakes ever occurred in Central Italy.

Continue reading “1st circular out now for the 6th INQUA paleoseismology workshop in Fucino, Italy, 19-24 April 2015”

3He dating of rockfalls helps to distinguish between proximal and distal paleo-earthquakes in Christchurch, NZ

The 2011 Christchurch earthquake series had severe consequences and surprised scientists for many reasons. Ground motions were extremely strong despite the relative moderate magnitudes of the quakes (MW 5.3-7.1). The events happened on a system of hitherto unknown faults, some of which are located directly below Christchurch. Earthquake environmental effects (EEE), especially liquefaction, were intense and widespread. It turned out that subsequent quakes reactivated the same feeder dikes of sand blows, showing that saturated sediments are susceptible of liquefaction no matter if they had been liquefied recently (also see the paper of Quigley et al. (2013) on the liquefaction effects). Another stunning lesson was the occurrence of intense rockfall in the vicinity of Christchurch. In a recently published study, Mackey and Quigley (2014) dated rockfall boulders with 3He and show that they allow to estimate the recurrence intervall of local seismic events like the 2011 series. This works is a very interesting way to use EEE for paleo-earthquake studies. Continue reading “3He dating of rockfalls helps to distinguish between proximal and distal paleo-earthquakes in Christchurch, NZ”

5 th PATA Days in Busan, Korea, news from the meeting

Yesterday and today is the time of the lectures and talks, after the introducing field excursion as Christoph has reported. Yesterday evening we waved goodbye to Christoph with a couple of beers, he already needed to leave for another meeting in Durham, UK, early.  We started yesterday morning with keynotes by John Suppe on folding and fold scarps and Vincent Cronin on his SLAM project (the seismo-lineament analysis method, visit his webpage for more information). Continue reading “5 th PATA Days in Busan, Korea, news from the meeting”

5th PATA Days in Busan – registration deadline extended to 20 June

Dear friends and colleagues,

The deadline for registration of the 5th PATA-days meeting is extended to June 20, and for abstract submission to the end of June.  

The 5th International INQUA Meeting on Paleoseismology, Active Tectonics and Archeoseismology (PATA Days) will take place in Busan, Korea from 21-27 September 2014. Already some 75 scientists from all around the world have registered for this meeting – be the next one and don’t miss the latest news on old earthquakes.

See details on the official website: www.pata-days.org.

Please don’t miss the last chance to visit dynamic Korea!

  Continue reading “5th PATA Days in Busan – registration deadline extended to 20 June”

First paper on the earthquake environmental effects of the 2014 Cephalonia (Greece) M6.0 quakes

On 26 January and 3 February, 2014, two strong and shallow strike-slip earthquakes of magnitude 6+ occured beneath the island of Cephalonia in Western Greece. Both events caused intense damage to buildings and infrastructure. A team of Greek geologists mapped earthquake environmental effects (EEE) such as liquefaction, road failures, rock falls, small/medium size landslides and stonewall failures. The results are now published in a paper in Tectonophysics. Continue reading “First paper on the earthquake environmental effects of the 2014 Cephalonia (Greece) M6.0 quakes”