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宽频带地震学的重要性[美国]金森博雄地震学家们运用地震波来研究不同的地质过程,如地震、火山喷发、滑坡等。地震波的激发具有很宽的动态范围(140dB 以上)以及很宽的频带(至少从10赫到 DC)。为了更有效地使用地震波所携带的信息,宽频带地震记录是十分必要的。最近,有关宽频带地震图的研究表明,断层带的强度是极不均匀的。这一结果虽不出人意料,但对了解全球和区域性构造活动以及评价由大震引起的强地面运动却具有重要的意义。断层带非均匀性的区域变化可解释为全球
The importance of broadband seismology [USA] Jinshenboxiong seismologists use seismic waves to study different geological processes such as earthquakes, volcanic eruptions, landslides and the like. Seismic excitation has a wide dynamic range (above 140dB) and a wide frequency band (at least from 10Hz to DC). In order to make more efficient use of the information carried by seismic waves, broadband seismic recording is very necessary. Recently, studies on broadband seismograms have shown that the strength of the fault zone is extremely inhomogeneous. Although this result is not surprising, it is of great significance for understanding global and regional tectonic activities and for evaluating the strong ground movements caused by large earthquakes. Regional variations in fault zone heterogeneity can be interpreted as global