Speleoseismological research carried out in the Central Apennines (Italy) contributed to understanding the behavior of active normal faults that are potentially able to generate M_w 6.5–7 earthquakes documented by paleoseismology and by historical and instrumental seismology. Radiometric (U‐Th, AMS‐¹⁴C, and bulk‐¹⁴C) dating of predeformation and postdeformation layers from collapsed speleothems found in Cola Cave indicates that at least three speleoseismic events occurred in the cave during the last ~12.5 ka and were ostensibly caused by seismic slip on one or more of the active faults located in the region surrounding the cave. We modeled the collapse of a tall (173 cm high) stalagmite to find a causative association of this event with one among the potential seismogenic sources. We defined the uniform hazard spectrum (UHS) for each seismogenic source at the site, and we used the calculated spectra in a deterministic approach to study the behavior of the speleothem, through a numerical finite element modeling (FEM). Although our analysis suggests the “Liri” fault as the most likely source responsible for the ground shaking recorded in the cave, the “Fucino” fault system, responsible for a M_w 7 earthquake in 1915, cannot be excluded as a potential source of speleoseismic damage. Results of this work provide new constraints on the seismotectonic history of this sector of Central Apennines and highlight the performance of integrated speleoseismological, seismic hazard, and numerical studies.

中文翻译：

---

洞穴Speleothem坍塌记录了意大利亚平宁山脉中部的一次大古地震

Speleoseismological研究有助于了解活动的正断层有潜在的能够产生M的行为，中央亚平宁（意大利）进行_W¯¯通过古地震学记录6.5-7地震，由于历史和器乐地震。辐射度（U‐Th，AMS‐ ¹⁴ C和Bulk‐ ¹⁴C）对可乐洞中塌陷的蛇形煤眼的变形前和变形后层进行测年表明，在最后约12.5 ka的时间里，洞穴中至少发生了3次地震事件，表面上看是由位于一个或多个活动断层上的地震滑动引起的洞穴周围的区域。我们对一个高（173厘米高）石笋的坍塌进行了建模，以发现该事件与潜在震源之一的因果关系。我们为现场的每个震源定义了统一危险谱（UHS），并通过确定性方法，通过数值有限元建模（FEM），将计算出的谱以确定性方法用于研究蛇鞘的行为。尽管我们的分析表明“里里”断层是造成洞穴中地面震动的最可能原因，1915年的_w 7地震不能排除为潜在的震源性破坏。这项工作的结果为中亚平宁山脉这一地区的地震构造历史提供了新的限制，并突出了综合性地震学，地震灾害和数值研究的性能。