Sunday, April 14, 2013

Earthquake of shindou 6- in West Japan

Early Saturday morning an earthquake of magnitude 6.0 and shindou (shaking intensity) 6- occurred near Kobe. Aside from liquefaction, 24 people were reported injured. NHK reports that among the injured was an 83 year old man who attempted to escape through a window, severely fracturing his thigh bone.  They also report the usual temporal suspension of trains and flights as tracks and runways are checked for damages, and the ongoing functioning of Japans two active nuclear reactors in Fukui prefecture. Some movies are available here and here, showing immediate repairs of roofs. Given the distance, as seen in the pictures from the JMA below, we didn't notice the quake at all.



An earthquake of shindou 6-has the following characteristics: 
-difficult to keep standing
-a lot of heavy and unfixed furniture moves and falls. It is impossible to open the door in many cases. All objects will shake violently.
-strongly and severely felt outside. Light posts swing, and electric poles can fall down, causing fires.
-less earthquake-resistant houses collapse and even walls and pillars of other homes are damaged. Apartment buildings can collapse by floors falling down onto each other.
-less earthquake-resistant buildings easily receive heavy damage and may be destroyed. Even highly earthquake-resistant buildings have large cracks in walls and will be moderately damaged, at least. In some buildings, wall tiles and windowpanes are damaged and fall.
-gas pipes and/or water mains will be damaged. Gas, water and electricity are interrupted.
-small to medium cracks appear in the ground, and larger landslides take place.
-peak ground acceleration of 2.50–3.15 m/s²


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