nlwxpearo
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Posted: Thu 22:08, 17 Feb 2011 Post subject: Dynamic Space Zone Yongdeng 5.8 earthquake in the |
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Dynamic Space Zone Yongdeng 5.8 earthquake in the prediction of retrospective
Significantly increased the time of ups and downs in early 1994, which is the background frequency of small earthquakes each year from 1993 to 1994, 66 sudden increase of 107 times (Fig. 6) consistent. [4] proposed the use of small earthquake modulation ratio can be increased rolling cycle to predict the first two third downs of increased time to peak. For Yongdeng earthquake, its North (Figure 7) increased the peak of the first two downs of the time interval of 7 months which can be predicted third downs is the peak time of increased occurrence time r 7 1995 months. Fluctuations will increase the time obtained r = Lo month on behalf of the Van (1) of the △ D, D is calculated the time of earthquake 45 years into the T = 45 years (2), we obtain the magnitude of M is 5. 75. The results show that the predicted occurrence time and magnitude of the earthquake and the actual Yongdeng time and magnitude of earthquake is very close. It is worth noting that, in January 1995 had a 6-month health-frequency Cuan appear empty areas, small earthquakes was very quiet, in the epicenter distribution map shows a blank (Fig. 4g),[link widoczny dla zalogowanych], this is a temporary one before the earthquake reflect the kinds of earthquake precursor,[link widoczny dla zalogowanych], is worthy of further study. Moreover, according to the literature [5] research,[link widoczny dla zalogowanych], the static may also be a large empty area near the epicenter of the deep with a vertical uplift movement consequences,[link widoczny dla zalogowanych], is the vertical upward force to the bottom of the crust to the upper crust may fault plane is the tendency to increase the pressure, resulting in small earthquakes are suppressed fact is, the month in the forecast in the place of the water board 58 to NmN Figure 8 Yongdeng Ml ≥ 1.0 earthquake South Central Miao earthquake frequency graph Fig8Thefrcq. uf. * Ncy iv ofM ≥ 10sl-~ ksinhjoftheYortgdenge ~ thquakeepimnter earthquake. From the background field of view, Cheng Teng 58 earthquake frequency of small earthquakes have been recovered trend line (Figure 2a), three doctors from the sub-terms, j zone has decreased the frequency of small earthquakes, but the South Hospital (Figure remained abnormal state It should be noted that application of the dynamic cavity sum method, the strong earthquakes to predict and track the location,[link widoczny dla zalogowanych], not only can clearly see the future of earthquake main shock, the whole process, with ups and downs of homes plus coward f precursor can also be more accurate to determine the future when the main shock of earthquake and Sun Zhan Qu ¨ l8 36, the first volume of the Northwest earthquake intensity. Therefore, the dynamic cavity method in the prediction of future work should be extended and used. Thank Professor Qin Baoyan of this guidance to the child.
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