scholarly journals Assessing the Reliability of Earthquake Environmental Effects in Historical Events: Insights from the Southern Apennines, Italy

Geosciences ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 332 ◽  
Author(s):  
Maria Francesca Ferrario ◽  
Leonello Serva ◽  
Livio Bonadeo

Earthquake Environmental Effects (EEEs) are a common occurrence following moderate to strong seismic events. EEEs are described in literary sources even for earthquakes that occurred hundreds of years ago, but their potential for hazard assessment is not fully exploited. Here we analyze five earthquakes occurred in the Southern Apennines (Italy) between 1688 and 1980, to assess if EEEs are reliable indicators of the effects caused by past earthquakes. We investigate the spatial distribution of EEEs and their ability to repeatedly occur at the same place, and we quantitatively compare the macroseismic fields expressed in terms of damage-based intensity (MCS: Mercalli–Cancani–Sieberg) to the Environmental Scale Intensity (ESI) macroseismic field, derived from an intensity attenuation relation. We computed the field “ESI-MCS”, showing that results are consistent when comparing different seismic events and that ESI values are higher in the first ca. 10 km from the epicenter, while at distances greater than 20 km MCS values are higher than ESI. Our research demonstrates that (i) EEEs offer a detailed picture of earthquake effects in the near field and (ii) the reappraisal of literary sources under a modern perspective may provide improved input parameters that are useful for seismic hazard assessment.

1995 ◽  
Vol 38 (5-6) ◽  
Author(s):  
D. Mariotti

The current Italian seismic catalogues are generally considered complete, as regards the destructive seismic events which occurred from the 17th century onwards. In fact, research performed using target methodologies still reveal earthquakes of high intensity, not yet known to the seismological tradition. This is the case of an earthquake which occurred on 14 September 1780, which caused serious damage and victims in some towns of the Tyrrhenian coast of North-eastern Sicily (I0, = VIII MCS). The information reported in an anonymous printed account was verified in the administrative records; this allowed a reconstruction of a macroseismic outline of great interest, which may make more precise the seismic hazard assessment in an area at high environmental risk due to the presence in Milazzo of an important chemico-industrial complex.


2020 ◽  
Vol 11 (3) ◽  
pp. 606-623
Author(s):  
T. U. Artikov ◽  
R. S. Ibragimov ◽  
T. L. Ibragimova ◽  
M. A. Mirzaev

Seismic intensity assessment in points of a macroseismic scale plays an important role for researching the seismic history of areas characterized by active seismicity, as well as for construction (and updating) of seismic zoning maps in various scales. Macroseismic scale points are generally referred to in construction standards applied in the majority of post-Soviet states. In our study aimed to model the macroseismic field of earthquakes, a large volume of macroseismic data on Central Asia was analyzed, and coefficients used in Blake–Shebalin and Covesligeti equations were aligned. This article presents a generalized dependence model of macroseismic intensity attenuation with distance. The model takes into account seismic load features determined by various depths of earthquakes. The ratios of small and big axes of the ellipse, that approximates real isoseists, are estimated with respect to seismic scale points, earthquake depths and magnitudes. The East Uzbekistan area is studied as an example to investigate whether seismic hazard assessment values may differ depending on a chosen law of seismic influence intensity attenuation with distance.


2014 ◽  
Vol 172 (8) ◽  
pp. 2277-2293 ◽  
Author(s):  
Mark R. Yoder ◽  
John B. Rundle ◽  
Margaret T. Glasscoe

2021 ◽  
Vol 14 (9) ◽  
Author(s):  
Etoundi Delair Dieudonné Ndibi ◽  
Eddy Ferdinand Mbossi ◽  
Nguet Pauline Wokwenmendam ◽  
Bekoa Ateba ◽  
Théophile Ndougsa-Mbarga

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