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New Insights on the Strongest Historical Earthquake in the Pollino Region (Southern Italy)

机译:关于波利诺地区(意大利南部)最强烈的历史地震的新见解

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摘要

The Italian seismic catalog (Rovida et al., 2011) portrays a significant gap of seismicity in the Pollino Range area, the southernmost segment of the southern Apennines at the boundary with the Calabrian arc. In this region, the only significant seismic event of the instrumental era occurred in 1998 north of the Pollino Range (M_w 5.6, Fig. 1). No seismic event with intensity greater than VIII on the Mercalli–Cancani–Sieberg (MCS) scale is present in the historical records, whereas strong earthquakes occurred immediately north (1836 M 6.0; 1857 M 7.0) and south (1184 M 6.7; 1836 M 6.2) of the area (Fig. 1). However, geologic data (Bousquet, 1973; Russo and Schiattarella, 1992) have shown clear evidence ofQuaternary faulting along twomajor normal seismogenic faults, the Pollino and the Castrovillari faults. Paleoseismological data (Michetti et al., 1997;Cinti et al., 1997, 2002) recognized the occurrence of large magnitude events during medieval times along those two faults, but no trace is left of these major events in the historical record.
机译:意大利地震目录(Rovida等人,2011年)描绘了波利诺岭地区(南亚平宁山脉最南端的卡拉布里亚弧线边界)的地震活动性存在明显差距。在该地区,仪器时代唯一的重大地震事件发生在1998年波利诺山脉以北(M_w 5.6,图1)。在历史记录中,没有记录到发生在Mercalli–Cancani–Sieberg(MCS)范围内的强度大于VIII的地震事件,而在北部(1836 M 6.0; 1857 M 7.0)和南部(1184 M 6.7; 1836 M)发生了强烈地震。 6.2)的区域(图1)。但是,地质数据(Bousquet,1973; Russo和Schiattarella,1992)已清楚地表明了沿着两个主要的正地震发断层即Pollino和Castrovillari断层的第四纪断层。古地震学资料(Michetti等,1997; Cinti等,1997,2002)认识到中世纪沿这两个断层发生了大的事件,但在历史记录中没有留下这些重大事件的痕迹。

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