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Soil liquefaction induced by earthquake shaking is a major contributor to urban seismic risk. ... Liquefaction in Chiba, Japan on YouTube recorded during the 2011 ...
The 1964 Niigata earthquake (Japanese: 新潟地震) struck at 13:01 local time (04:01 UTC) on 16 June with a magnitude of either 7.5 or 7.6.The epicenter was on the continental shelf off the northwest coast of Honshu, Japan, in Niigata Prefecture, about 50 kilometres (31 mi) north of the city of Niigata.
Much of the earthquake damage was due to soil liquefaction, causing the collapse of houses and a number of road and rail accidents. The degree of liquefaction was the worst seen in Japan since the 1964 Niigata earthquake. The greatest effects were observed in areas underlain by loose Holocene aeolian and fluvial sands. [10]
The 2001 Geiyo earthquake (2001年芸予地震 Nisen-ichi-nen Gēyo Jishin) occurred with a moment magnitude of 6.7 on March 24 at 15:27 local time near Hiroshima, Japan. One person in Hiroshima and one person in Ehime were reported dead. About 3,700 buildings were damaged in the Hiroshima area. [2] Liquefaction was observed in Hiroshima [3 ...
Although soil liquefaction was observed over a broad geological area, it occurred in localized areas almost exclusively limited to man-made embankments. [11] The earthquake affected a total of 36 local rivers, including the major Abashiri and Ishikari Rivers . [ 4 ]
Artificial islands, such as the modern Rokkō Island and especially Port Island in Kobe, suffered severe subsidence due to liquefaction. Water breaking through the surface and flooding those islands was initially believed to have seeped in from the sea, but in fact had been forced out of the soil used to build the islands.
In geology, soil liquefaction refers to the process by which water-saturated, unconsolidated sediments are transformed into a substance that acts like a liquid, often in an earthquake. [6] Soil liquefaction was blamed for building collapses in the city of Palu, Indonesia in October 2018. [7]
There were reports that a few small islands in the Kiso River vanished as a result of soil liquefaction and subsequent subsidence which caused water to submerge the islands while a tsunami was generated in Ise Bay, drowning thousands. [31] At the location of present-day Nagoya, extensive soil liquefaction took place.