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PS-100仪器是我们研制的抗干扰性能极强的、新一代高精密度地电测量系统.设在川滇地区的一个 PS100台网于苏门答腊海啸大地震前记录到HRT前兆波动.本文将主要分析报道来自震源区的这种前兆波,特别是其传播特性.潮汐力驱动的谐和振荡波(HT波)具有与潮汐力相同的周期(如MS_f,K_1,M_2等),但其振幅却仅在震前(约3个月)才出现异常增大;潮汐力驱动的共振振荡波(RT波),出现主震前2天(北京时2004-12-24的10时),RT波分为纵波与横波.初步确定其纵波波速V_1约为307 km/h,横波波速V_s约为126 km/h.它们可能是在地壳多孔岩石孔隙流体中以声模式传播的一类波.对RT波,苏门答腊主震断层系统的固有周期T_0约为5～6 h,其幅度可达2.9%(超出观测标准偏差17倍),成为极其显著的异常.RT波通常以突然急剧变化的方式达到其峰值.震源区多孔介质的固体基质骨架与其间孔隙流体的耦合振动满足共振条件时,即从震中区同时发射出(纵、横)RT波.苏门答腊M_w 9.0级地震前首次记录到RT波,此后已在20余次强震前记录到HRT波.诸强震前所记的HRT波彼此可以很好地对比,表现出一定的重复性、一致性和规律性.汶川M_s8.0级地震前,当时唯一仍在工作的红格台(距震中465 km),也记录到HRT波.我们还在震前发现红格台于2008年5月12日凌晨(0～5时)记录到与汶川地震有成因联系的、显著临震信息.(从2004年在川滇地区增设PS100台网捕捉地方强震的短临前兆开始,到汶川地震前发现红格台记录到临震信息的)这些事实有力地证明:HRT前兆波是客观存在的;地震,特别是强震是有前兆的;是可以预测、预报的,在不太远的将来,实现强震的短临预报是可行的.如果有一布设合理的PS-100台网,根据震前所记RT波,提前1～3天定量地预测强震的三要素是可能的.
PS-100 instrument is a new generation of high-precision geoelectric measuring system developed by our PS-100 instrument.A PS100 network located in Sichuan-Yunnan region recorded HRT precursory fluctuation before the Sumatra-Tsunami earthquake.This paper mainly introduces the main This precursor wave, especially its propagation characteristics, is analyzed and reported from the source region. The tidal-force-driven harmonic oscillating wave (HT wave) has the same period as the tidal force (eg MS_f, K_1, M_2, etc.) The anomalous increase occurred only before the earthquake (about 3 months). The tidal force-driven resonance wave (RT wave) appeared two days before the main shock (at 10 o’clock on December 12, 2004, 2004) For the P-wave and S-wave.It is preliminarily determined that the longitudinal wave velocity V_1 is about 307 km / h and the transverse wave velocity V_s is about 126 km / h.They may be a kind of wave propagating in the acoustic mode in the pore fluid of crustal porous rock.For RT wave , The natural cycle of the main Sumatra fault system, T_0, is about 5-6 h, with an amplitude of 2.9% (exceeding 17 times the observed standard deviation) and becomes an extremely significant anomaly. The RT wave usually reaches its peak in a sudden abrupt change The coupling between the solid matrix framework of porous media and the pore fluid in the source region is sufficient (Longitudinal and transverse) RT waves are simultaneously emitted from the epicenter when the resonance condition is reached, and the RT wave is recorded for the first time before the M_w 9.0 Sumatra earthquake, and HRT waves have been recorded before more than 20 strong earthquakes. The recorded HRT waves can be compared well with each other, showing some repeatability, consistency and regularity. Before the Wenchuan M_s8.0 earthquake, the only working red grid at that time (465 km from the epicenter) was also recorded To HRT waves.We also found before the earthquake that Honggongtai recorded significant natural disturbance information in the early morning of May 12, 2008 (from 0 to 5 o’clock) on the origin of the Wenchuan earthquake (from 2004 to 2004 in Sichuan and Yunnan provinces The addition of a PS100 network captures the short-range precursors to local strong earthquakes and records the presence of red earth stations before the Wenchuan earthquake. These facts strongly demonstrate that the HRT precursor waves are objective and that earthquakes, especially strong earthquakes are It is feasible to predict the short-term prediction of strong earthquakes in the not too distant future if there is a precursor.If there is a well-designed PS-100 network, according to the RT wave recorded before the earthquake, 1 ~ 3 days It is possible to quantitatively predict the three elements of strong earthquakes.