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MM X. Cracked ground, especially when loose and wet, up to widths of several inches; fissures up to a yard in width ran parallel to canal and stream banks. Landslides considerable from river banks and steep coasts. Shifted sand and mud horizontally on beaches and flat land. Changed level of water in wells. Threw water on banks of canals, lakes, rivers, etc. Damage serious to dams, dikes, embankments. Severe to well-build wooden structures and bridges, some destroyed. Developed dangerous cracks in excellent brick walls. Destroyed most masonry and frame structures, also their foundations. Bent railroad rails slightly. Tore apart, or crushed endwise, pipe lines buried in earth. Open cracks and broad wavy folds in cement pavements and asphalt road surfaces.
Originally posted by Anmarie96
I am afraid that while that 7.1 was an aftershock it may also be a foreshock.
The epicenter and focal-depth of the April 7 earthquake are consistent with the event having occurred very close to the main interface thrust-fault of the subduction zone plate boundary. Preliminary focal-mechanisms, however, imply slip on a fault with steeper dip than that of the main interface thrust-fault, which may imply an intraplate source is more likely.
Originally posted by Robin Marks
There is a pattern to the earthquakes. Geologists won't predict exactly. They'll give you odds. And they want to learn so the can predict precisely. I have watch earthquakes closely for a couple of years now and I see so many patterns. All the time.
Saturday, April 09, 2011 at 12:57:49 UTC
Saturday, April 09, 2011 at 09:57:49 PM at epicenter
Time of Earthquake in other Time Zones
21.3 km (13.2 miles)
212 km (131 miles) S of Miyazaki, Kyushu, Japan
213 km (132 miles) SE of Kagoshima, Kyushu, Japan
948 km (589 miles) SSE of SEOUL, South Korea
973 km (604 miles) SW of TOKYO, Japan
horizontal +/- 14 km (8.7 miles); depth +/- 8.8 km (5.5 miles)
NST=100, Nph=102, Dmin=356.2 km, Rmss=0.82 sec, Gp= 36°,
M-type=regional moment magnitude (Mw), Version=9
USGS NEIC (WDCS-D)