Earthquake (1605 7.9). But since 1854, there have been more than one hundred and fifty years, has not occurred earthquake (1946 1944, the earthquake with magnitude 8 or so, but because the Suruga trench is not destroyed, not be counted in the East China Sea in the earthquake cycle). To this end, the Japanese government organs "investigation of earthquake forecast in 2004 to promote this part", in the East China Sea,http://www.libertymaine.us/planningboard/images/gucci-baggu-outlet-242.html http://www.libertymaine.us/planningboard/images/gucci-baggu-outlet-242.html, the East China Sea, the South China Sea area of Japan, the possibility of earthquake of magnitude 8 or over 30 years is 40% ~ 50%; within 50 years as of 80%. Seismic field has therefore in the related area, set up a large number of observation instruments, monitoring the change of strata, in order to make a more accurate prediction. But the impending earthquake prediction, in the Japanese view, at present is almost impossible. In the history, is considered imminent earthquake prediction success has only two times. Once in Greece, it is said by the private prediction success, but only once. Another is the Haicheng earthquake in 1975 China (level 7.2), 9 hours in advance issued earthquake prediction. But the reports at the time, misleading Chinese already can successfully impending earthquake prediction. Japan from 1996 to 2005 a total of accompanying persons hurt in the earthquake of magnitude 6 or over 33 back, no examples of successful earthquake prediction. From 2006, Japan began to "emergency earthquake quick report". This is some people mistakenly believe that the impending earthquake prediction. In fact, not the forecast is "report". "Emergency earthquake quick report" system is based on the throughout the country about one thousand seismic instrument, determination of focal depth and the magnitude,http://www.paleenconstruction.com/images/paleenmanor/boots-tenpo-t-269.html http://www.paleenconstruction.com/images/paleenmanor/boots-tenpo-t-269.html, measure the compressional wave generated when the earthquake occurs (P) and shear (S) strength, calculation of S wave spread to all parts of the quake, the use of P wave and S wave propagation time difference (usually[author] Ma Ting
in Japan for many years, has not heard any Japanese complain a quake did not accurately forecast the
[author] Ma Ting brigade in Japan for many years, has not heard any Japanese complain some earthquake no accurate prediction of the "International Herald Tribune" article the February 22nd New Zealand earthquake, if happened in China, earthquake workers will be scold the dog - prediction: why not?! In the earthquake prone Japan, in recent years, new "and so on the Hanshin earthquake, is also great harm, but in Japan for many years, has not heard any Japanese complain a quake did not accurately forecast. Did the Japanese earthquake prediction research on it not? The research is to study, but the academic circles and the folk have been focus focus on medium - and long-term forecasting. The earthquake in Japan long-term forecast, now the most attention is the "Tokai earthquake". The meteorological agency of Japan in charge of earthquake prediction, given the naming of no earthquake, this is the only. Historically, trench type earthquake caused by Suruga trench Shizuoka offshore, there is a certain periodicity, and connected the South China Sea East China Sea, South China Sea trench, caused by earthquake linkage. In December 22, 1854, the East China Sea, the East China Sea on the Richter 8.4 earthquake (the same below). 32 hours later, in the 8 earthquake occurred offshore of the Kii peninsula. The death of two thousand or three thousand people. History of former East Temple
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