New Perspectives in the Definition/Evaluation of Seismic Hazard through Analysis of the Environmental Effects Induced by Earthquakes

Porfido, Sabina; Alessio, Giuliana; Gaudiosi, G.; Nappi, Rosa

doi:10.3390/geosciences10020058

Cited by 9 publications

(2 citation statements)

References 18 publications

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“…The geological, hydrological, geophysical, and topographical analyses make it possible with half intervals of the ESI scale method. The ESI scale has also been realistically used for paleo-earthquakes (Silva et al, 2008;Porfido et al, 2015) providing estimates for better calculation of hazards in numerous socio-economic backgrounds (Chunga et al, 2018;Lekkas, 2010).…”

Section: The Esi Scalementioning

confidence: 99%

Insights to the Damaging Effects of August 7, 2020 (Mw 5.0) Mila Earthquake and Seismic Hazard Analysis of Northeast Algeria

Mouloud,

Hallal,

Lebdioui

et al. 2024

Preprint

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Here, we present a seismic hazard evaluation for the August 7, 2020 (Mw 5.0) Mila earthquake that occurred in northeast Algeria. The study addresses the environmental factors that could contribute significantly to the highly damaging impact of this event. The following aspects were included in an interdisciplinary methodology that was adopted: the earthquake catalog, the coseismic geologic impacts with respect to the Environmental Seismic Intensity (ESI) scale standards, and estimations of peak ground acceleration values based on both probabilistic and deterministic seismic hazard approach. A comprehensive study of main and secondary impacts was performed for three districts (El-Kherba, Grareme-Gouga, and Azzeba), to obtain a good seismic intensity assessment. A PSHA- and DSHA based hazard analysis for the region concluded that the unique intensity values were related to the Modified Mercalli Intensity (MMI) and PGA distributions. Our work shows that the considered hazard estimation processes can result in very diverse values of the PGA distributions. Furthermore, PGA values frequently deviate significantly from macroseismic intensity levels derived using the ESI scale. As a result, the combination of the environmental factors attached to the hazard assessments seems to be necessary to obtain an additional accurate seismic assessment. In the final phase, seismic hazard assessment methods were applied to obtain the estimated damage distributions at the risky locations for 50 years of exposure time. The results show the importance of taking precautions to reduce earthquake casualties in vulnerable old urban centers. This work proposes a probable methodology for conducting site-specific hazard and vulnerability estimations to mitigate earthquake hazards and support risk reduction measures.

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Section: The Esi Scalementioning

confidence: 99%

Insights to the Damaging Effects of August 7, 2020 (Mw 5.0) Mila Earthquake and Seismic Hazard Analysis of Northeast Algeria

Mouloud,

Hallal,

Lebdioui

et al. 2024

Preprint

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“…To overcome this problem in traditional intensity scales, several studies have compiled EEEs from diverse tectonic settings, geological settings, and earthquakes of diverse origin and proposed the ESI-07 intensity scale under the framework of INQUA [1,3,4,17,[19][20][21]. Several case studies have been reported in the literature of estimating the seismic intensity for historical and modern seismic events around the globe [10,16,[21][22][23][24][25][26]. Despite having the upper hand over traditional intensity scales, the ESI-07 scale only has a limited number of entries from Asia or Central Asia [9,25,27].…”

Section: Introductionmentioning

confidence: 99%

Intensity Reassessment of the 2017 Pohang Earthquake Mw = 5.4 (South Korea) Using ESI-07 Scale

et al. 2020

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The earthquake environmental effects (EEEs) around the epicentral area of the Pohang earthquake (Mw-5.4) that occurred on 15 November 2017 have been collected and classified using the Environmental Seismic Intensity Scale (ESI-07 scale) proposed by the International Union for Quaternary Research (INQUA) focus group. The shallow-focus 15 November Pohang earthquake did not produce any surface rupture, but caused extensive secondary environmental effects and damage to life-line structures. This earthquake was one of the most damaging earthquakes during the instrumental seismic era of the Korean Peninsula. The EEEs included extensive liquefaction, ground cracks, ground settlement, localized rockfall, and variation of the water table. The main objective of this paper was to carry forward a comparative assessment of the Pohang earthquake’s intensity based on traditional macroseismic scales and the ESI-07 scale. With that objective, this study will also make a substantial contribution to any future revision of the ESI-07 scale, which mostly comprises case studies from Europe and South America. The comparison of the ESI-07 scale with traditional intensity scales similar to the intensity scale used by the Korean Meteorological Administration for the epicentral areas showed 1–2-degree differences in intensity. Moreover, the ESI scale provided a clearer picture of the intensity around the epicentral area, which is mostly agricultural land with a lack of urban units or buildings. This study urges the integration of the traditional and ESI-07 scale for such small magnitude earthquakes in the Korean Peninsula as well as around the world in future. This will predict seismic intensity more precisely and hence provide a more-effective seismic hazard estimation, particularly in areas of low seismic activity. The present study will also provide a useful and reliable tool for the seismic hazard assessment of similar earthquakes around the study area and land-use planning at a local scale considering the secondary effects.

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Moving Towards Smart Visualization for Smart City Services: A Systematic Literature Review in Earthquake Engineering

Jianu,

Drăgoicea

2024

Progress in IS

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New Perspectives in the Definition/Evaluation of Seismic Hazard through Analysis of the Environmental Effects Induced by Earthquakes

Cited by 9 publications

References 18 publications

Insights to the Damaging Effects of August 7, 2020 (Mw 5.0) Mila Earthquake and Seismic Hazard Analysis of Northeast Algeria

Insights to the Damaging Effects of August 7, 2020 (Mw 5.0) Mila Earthquake and Seismic Hazard Analysis of Northeast Algeria

Intensity Reassessment of the 2017 Pohang Earthquake Mw = 5.4 (South Korea) Using ESI-07 Scale

Moving Towards Smart Visualization for Smart City Services: A Systematic Literature Review in Earthquake Engineering

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