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Tag: σεισμοί

Reconnaissance report on the dual Cephalonia Earthquake

Reconnaissance report on the dual Cephalonia Earthquake

Written by nisida on . Posted in Νέα.

Two major earthquakes with Mw = 6.0 and Mw = 6.1 hit the Cephalonia Island of Greece on January 26th and February 3rd of 2014, respectively.The reconnaissance mission was unique in two ways: First, it brought together the local, highly qualified earthquake engineering community, with a US collaborative team of GEER, EERI, and ATC to form a 70-people multidisciplinary team. Second, the resiliency of building stock, geostructures, and communities that responded successfully to one of the strongest sequence of ground motions ever recorded in Europe provided the opportunity to focus on collecting data of successful performance in addition to failures – a new generation of reconnaissance.
The reconnaissance report (Version 1) is available at www.geerassociation.org/GEER_Post%20EQ%20Reports/Cephalonia_Greece_2014/index.html
with observations on: (i) seismological and recorded motions; (ii) geotechnical aspects; (iii) rigid blocks behavior; (iv) structural response; (v) infrastructure lifelines; (vi) nonstructural components response; and (v) economical and societal aspects.
Correlation of pre- and post-earthquake assessment of public buildings during the 2014 Cephalonia Earthquake

Correlation of pre- and post-earthquake assessment of public buildings during the 2014 Cephalonia Earthquake

Written by nisida on . Posted in Νέα.

Presentation made during the Workshop about Cephalonia Earthquake jointly organised by the Society of Civil Engineers, the Hellenic Association for Earthquake Engineering, the Greek branch of the International Association for Bridge and Structural Engineering and the Organisation for Earthquake Protection and Planning.  

Presentation available in YouTube:

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Kefalonia Earthquake: list of information resources

Kefalonia Earthquake: list of information resources

Written by nisida on . Posted in Νέα.

Constantly updated Web Info Point:


Event sequence

Recorded Ground motions

Response Spectra

Antonis Petropoulos

Photos & Videos
Structural damage

Technical Reports

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Help Map Damage from the Gansu Earthquake

Help Map Damage from the Gansu Earthquake

Written by nisida on . Posted in Νέα.

After the Christchurch earthquake, a new initiative has been undertaken to mobilize the engineering community to quickly trace damage visually based on high resolution Google Earth maps. This volunteer work helps the authorities identify quickly on the areas of highest earthquake impact and manage the recovery and reconnaissance activities. This time Tomnod, the web-based tool used for for this purpose has initiated a campaign to help identify the impact of the two powerful earthquakes that have struck China’s north-west Gansu province, killing at least 75 people and leaving more than 400 others injured.

In my opinion this initiative is quite premature so far while the subjectivity of the visualization by individual volunteers increases the uncertainty of the macroscopic assessment. However, the large number of the people involved may somehow smooth the assessment discrepancy and provide some basic trends regarding the areas most heavily hit, a fact that is of paramount importance particularly in extended remote areas such as the Chinese provinces. I think it is worth giving it a try by connecting to the digital images here. Even the idea of contributing to human relief from the comfort of your office or home is quite rewarding.

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Earthquake Photo Galleries by EERI

Earthquake Photo Galleries by EERI

Written by nisida on . Posted in Νέα.

EERI is launching a fantastic new resource for members only–online photo galleries from many recent and important earthquakes. Included are galleries for over 30 earthquakes. Each gallery features from 30 to 300 images and all photos are searchable by keyword. These initial galleries are only the beginning! EERI will continue to add new galleries and is working on a bulk download option and an improved search feature. In the next few months we will also add photos from the personal collection of Professor George Housner, one of EERI’s founding members. You can help us improve the site by contributing more photos, improving captions, identifying photographers, and providing feedback. Any comments should be sent to Chris Lee at Chris@eeri.org.

Fukushima Earthquake (11/3/2011) documentary

Fukushima Earthquake (11/3/2011) documentary

Written by nisida on . Posted in Νέα.

Ντοκιμαντέρ του ΣΚΑΪ καταγράφει μέσα από συγκλονιστικές εικόνες τον σεισμό των 9 Ρίχτερ, το τσουνάμι και την πυρηνική καταστροφή στην Φουκουσίμα της Ιαπωνίας. Αυτόπτες μάρτυρες αλλά και επιστήμονες που βίωσαν και μελετούν αντίστοιχα αυτό το σεισμό και τις συνέπειες που προκλήθηκαν στην Ιαπωνία μιλούν στην κάμερα. Τα 9 Ρίχτερ που χτύπησαν την Ιαπωνία την Παρασκευή 11 Μαρτίου 2011 αποτέλεσαν τον πέμπτο μεγαλύτερο σεισμό που έχει καταγραφεί στον κόσμο από το 1900. Το τσουνάμι που ακολούθησε έφερε και τις εφιαλτικές συνέπειες των 10.000 και πλέον νεκρών αλλά και χιλιάδων αγνοουμένων. Ολόκληρες πόλεις χάθηκαν και τίποτα δεν είναι πια ίδιο για τους Ιάπωνες αλλά και ολόκληρο τον κόσμο μετά την καταστροφή που υπέστη το πυρηνικό εργοστάσιο της Φουκουσίμα

O'Rourke speaks about earthquake effects

O’Rourke speaks about earthquake effects

Written by nisida on . Posted in Νέα.

Watch Live on March 7 or Watch Video on YouTube

PEER and the EERI Northern California Chapter jointly hosted the EERI distinguished lecture “The New Normal for Natural Disasters” by Professor Tom O’Rourke from Cornell University on December 6, 2012 at UC Berkeley.  This lecture discussed the effects of the Tohoku Earthquake and Tsunami, Canterbury Earthquake Sequence, and Hurricanes Katrina and Sandy with respect to their impact on regional and international economics, national practices for security and recovery, and worldwide energy policy.  The recording is now posted at PEER’s YouTube channel with the intermittent audio static from the live webcast removed. 
For those who would rather watch a live presentation, check out the opportunity towatch Professor O’Rourke live at Stanford University on March 7th as a part of the Shah Family Fund Distinguished Lecture Series.
Title: Earthquake Effects on Critical Infrastructure 
Speaker: Tom O’Rourke, Thomas R. Briggs Professor of Engineering, Cornell University
Date: March 7, 2013
Time: 4:30pm (Reception at 4:00pm)
Location:  Stanford University, Li Ka Shing Conference Center, LKS240/250 Directions
More information about this event can be found at the Blume Center’s website.
Abstract: The effects of the Tohoku Earthquake and Tsunami and Canterbury Earthquake Sequence are discussed with respect to their impact on regional and international economics, national practices for security and recovery, and worldwide energy policy. The lecture explains why these events require a fundamental re-thinking of the way we evaluate the risks of extreme events, as well as define and protect critical infrastructure. The impact of the Canterbury Earthquake Sequence on the underground infrastructure in Christchurch is explored with the use of an extraordinary GIS data set covering the effects of both liquefaction-induced permanent ground deformation and transient ground motion for 3 different earthquakes. Lessons learned from Christchurch for Wellington, NZ and San Francisco, CA are discussed. To address the need for protection against rare, high consequence events with limited financial resources, a strategy for improving infrastructure resilience is proposed.
Earthquake Damage Database

Earthquake Damage Database

Written by nisida on . Posted in Νέα.

The Earthquake Damage Database has been launched, featuring a visual and fully searchable catalogue of structural damage due to earthquake loading in Greece. The database contains more than 300 photos with seismic-related metadata, georeference (where availlable) and commentary and aims to act as a visual educational tool for undergraduate and young Civil Engineers. Currently it is available only in Greek.
Official Website: http://asptetk.civil.auth.gr/Pages/Home.aspx
For further info or in case you are interested to submit your earthquake damage-related photos please contact: asextos@civil.auth.gr