Recently, scientists from Switzerland came up with the news that fractured bedrock might amplify earthquake shaking. The say they observed an increase by factor 10, which seems huge. I knew amplifying by sediment basins, but this is new to me.
100 years ago on 6 January, Alfred Wegener presented his continental drift theory for the first time. The Blogosphere was full with articles, among them:
- Planeet Aarde (Dutch, Nederlands)
- Daburnas Logbuch (German, Deutsch)
- Koprolitos (Spanish, Español)
- Storia della Geologia (Italian, Italiano)
- Geschichte der Geologie (German, Deutsch)
- Andrew Alden at About.com (English)
- Scientific American (English)
- Gunnar Ries at Scilogs (German, Deutsch)
- Seismo Blog (English)
- Geotripper (English)
- Amphibol (German, Deutsch)
- Canadensis (English)
- Human Stupidity (English)
- The Mathisen Corollary (English)
- Toumai’s Banana (German, Deutsch)
- Observatorio Redes (Spanish, Español)
You think you already know everything about Alfred Wegener and you’ve read everything about his theory? Well, check out this song:
Another really great video I found does perfectly explain why many small earthquakes do not release sufficient energy to avoid a big one:
Tom brought my attention to this video – a sonification of the Tohoku earthquake in Japan:
Now scientists say there’s no linkage between fracking and the Virginia earthquake. This discussion has become virulent during the last months and I am looking forward more data.
Most of you, dear readers, will have read a Lonely Planet Tour guide, I guess. Now they updated their entry on Christchurch, NZ, stating that this is an “exciting city”, because of the aftershocks. Can you believe this? Will they add a category for geological risks?
Just one more suggestion to everyone in Western Europe: On Friday, 24 January, Koji Okamura will give a guest lecture at Leuven University, Belgium: Lessons learned from the March 11, 2011 Tohoku-oki earthquake and tsunamis. The lecture starts at 3 p.m. and will be held at KAST 01.07, Kasteel Arenberg, Heverlee. Download the anouncement (PDF) here.
Don’t miss the EGU abstract submission deadline and have a nice weekend!