Mw9.0 earthquake hits Japan, causes Tsunami (updated – 3)

An earthquake with a magnitude of Mw9.0 has occured 130 km east of Honshu, Japan in a depth of ~25 km. This had been the fourth or fifth strongest earthquake to be recorded by instrumental seismology. The quake caused significant destruction to the Honshu Island and triggered a tsunami that  destroyed a number of harbours. In some places (Sendai), tsunami heights were reported to exceed 10 m. A tsunami warning has been released for wide parts of the Pacific, but in Hawaii only 1 m was observed, therefore the warnings for the US West Coast have been lowered. Continue reading “Mw9.0 earthquake hits Japan, causes Tsunami (updated – 3)”

IGCP567: “Modern Problems of Geodynamics and Geoecology of Intracontinental Orogens” Bishkek, Kyrgyzstan, 19-24 June 2011

In the framework of IGCP567, Dr. Andrey Korjenkov is convening a special IGCP567 session and field trip on Earthquake Archaeology and Palaeoseismology in Central Asia.
All information on the international symposium can be found in the first circular (and registration form).
If you are interested to contribute to this session and/or participate to the field trip, please contact Dr. Korjenkov ( as soon as possible. The final deadline is 15 March.
Continue reading “IGCP567: “Modern Problems of Geodynamics and Geoecology of Intracontinental Orogens” Bishkek, Kyrgyzstan, 19-24 June 2011″

Where on Google Earth? WoGE #271

I have won my first WoGE on Friday, Florian had a great image of the Okavango delta in Botswana. So I have the great pleasure to host the actual quiz.  The rules are simple: Find out the position of the image placed below (provide coordinates) and give a short description of the geological features in the comments. The first to find out has the honor to host the next quiz on his (geo-) blog. I do not invoke the “Schott rule” since I chose to show only a small detail of the subject of interest. This means: Let the games begin! Continue reading “Where on Google Earth? WoGE #271”

What’s up? The Friday links (8)

The Christchurch earthquake was the main topic of the Geoblogosphere this week. A great analysis on the effects was provided by Dave Petley in his Landslide Blog. Highly Allochthonous reasoned on seismic lensing, Ontario Geofish posted a lot on building security, and countless news sites came up with photos and reports. Frank Taylor, who hosted the GoogleEarthBlog before he left for a sailing trip around the world, was in Christchurch next to the Cathedral when the quake happened. On his Tahina Expedition website he reports on his experiences.

Continue reading “What’s up? The Friday links (8)”

Why was the Christchurch earthquake so devastating?

A M6.3 earthquake hit Christchurch, New Zealand on 22 February (21 Feb in UTC), leaving at least 75 people dead and hundreds injured or missing. Hundreds of houses were destroyed, including the Christchurch Cathedral, and damages will probably sum up to some billion dollars. On 4 September 2010 (3 Sept in UTC), a M7.0 event struck Christchurch, but then no one was killed. So: what’s the difference between the two events?

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What’s up? The Friday links (6)

Today on Friday, 11 February, a magnitude 7.0 earthquake occurred offshore in Chile near Concepcion at  36.5° S and 73° W in a depth of 28km. The MMI at the nearby large cities was reported by the USGS with V.

Update: The magnitude was corrected to 6.8. The earthquake was followed one hour later by a further event with a magnitude of 5.3 and 4 hours later again by a more shallow 6.3.
Continue reading “What’s up? The Friday links (6)”