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  • What’s up? The Friday links (11)

    Because of the recent news, these Friday links will deal with earthquake prediction. As in the L’Aquila case and in the Judgment Day “prophecy”, a reliable prediction is not possible until now. Repeat: NOT POSSIBLE! more

  • The Wednesday Centerfault (3)

    This week´s Centerfault is the famous Arkitsa Fault in Greece (38.43°N, 23.00°E). Along this about 500 m long and locally more than 40 m high excavated limestone fault plane within Mesozoic platform carbonates are uplifted against Pliocene-Quaternary sediments.

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  • Active and Inactive Faults

    Following Tomas post let’s stay a little longer on the Corinth Canal. The 6 km long famous Corinth Canal despite being an amazing feat of engineering, since it was constructed 120 year ago, it’s also a geology field trip favourite because it is basically a MEGA TRENCH.

    More than 40 faults can be identified some of them offsetting the entire sedimentary column, whereas others are confined within the lower sediments. Therefore, this photo shows a very nice example of an active and inactive fault within the same outcrop. You can rarely see something like that and this is a unique site where everybody can see and comprehend it.

    View of an active and inactive fault

    View of an active and inactive fault

    Faults also die.

    Faults also die.

    It shows also that faults die. This is very important because there are numerous faults in the crust, however the majority of them are inactive (e.g. can not give an earthquake today, but they did so in the past). So for earthquake geologists their first major goal is to identify which of the faults they map are active (e.g. can generate earthquakes today and represent seismic sources).

    Faults also die.

  • What’s up? The Friday links (10)

    Today’s Friday links concentrate on tsunamis. Recently, Pure and Applied Geophysics came up with quite a lot of tsunami papers, and I am sure that this decision was made before the Japan tsunami happened. Some papers fur sure are interesting for analysing past tsunamis and earthquake environmental effects.

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  • New paper on the paleoseismicity of the Dead Sea – Kagan et al., 2011

    Some days ago a new paper on the paleoseismicity of the Dead Sea area during the late Holocene has been published in JGR. Kagan et al, 2011 investigated two new study sites in the northern and southern parts of the Dead Sea Basin and compared the seismites found there with the information of the Ein Gedi core presented by Migowski et al., 2004.

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  • The Wednesday Centerfault (1)

    It’s not easy to prepare weekly Friday links when you are abroad, this is what I had to realize in April. However, I will try to post a natural beauty each Wednesday in the future, the Wednesday Centerfaults and Centerfolds.

    Today, I start with the Kaparelli Fault in Greece (38.22°N, 23.23°E). This beautiful limestone fault scarp is more than 2.5 km long and up to 5 m high. The fault was activated during the 1981 Corinth earthquakes. more

  • Japan – strong aftershocks continue

    A strong aftershock has rocked Japan on 11 April. USGS reported a magnitude of 6.7, while EMSC estimated M6.6. A tsunami warning has been released by the Japan Meteorological Agency for the eastern coast of Japan’s Honshu Island. UPDATE 13:06 MEST: The Tsunami warning has been cancelled. more

  • Paleoseismicity at the EGU2011

    Now the EGU2011 in Vienna is over. Thousands of scientists have attended the meeting and more than 13,000 abstratcs were presented. Approx. 20,000 portions of Gulasz and 100,000 Wiener Schnitzels were served, hektoliters of wine and beer went down the throats of thirsty scientists. Some people say the EGU contributes with 10% to the income of Vienna’s bartenders. Several contributions dealt with paleoseismology, paleoseismicity, archeoseismology and paleotsunamis especially on Monday and Friday. more

  • Buy an earthquake for charity

    The World Geological Council (WGC) decided to “sell” earthquakes for charity. Similar to the names of low-pressure areas and high-pressure areas that you can buy from the meteorological agencies, everyone can now apply for buying the name of an earthquake as a gift to friends or relatives. The decision on the application is made by a control board of the WGC, the procedure will be managed by the USGS. The website BUY-AN-EARTHQUAKE.com will go online during the next weeks. All proceeds from this will be given for charity to help earthquake victims. Since the earthquake magnitude scale is logarithmic, rates will increase with increasing magnitude as well.

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  • Japan earthquake aftermath – blogs and press

    The Japan earthquake and tsunami have hit Japan harder than we could have imagined. Thousands are still missing, the death toll climbs and climbs, a nuclear disaster might happen or already happened, depending on who you ask, and the economical damages are incredibly high. Not only Japan was affected, but other countries as well feel the effects. Germany, for example, shut down seven of it’s oldest nuclear power plants and there’s a big debate on earthquakes and risks. The Geoblogosphere is still discussing lessons, estimations and consequences, and so are the official media. Here are some reports and opinions you should not miss. more