Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada Island
The main purpose of this study is to comparatively assess the susceptibility of earthquake-triggered landslides in the island of Lefkada (Ionian Islands, Greece) using two different statistical analysis models, a bivariate model represented by frequency ratio (FR), and a multivariate model represent...
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MDPI AG
2019-08-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/9/8/350 |
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| author | Christos Polykretis Kleomenis Kalogeropoulos Panagiotis Andreopoulos Antigoni Faka Andreas Tsatsaris Christos Chalkias |
| author_facet | Christos Polykretis Kleomenis Kalogeropoulos Panagiotis Andreopoulos Antigoni Faka Andreas Tsatsaris Christos Chalkias |
| author_sort | Christos Polykretis |
| collection | DOAJ |
| description | The main purpose of this study is to comparatively assess the susceptibility of earthquake-triggered landslides in the island of Lefkada (Ionian Islands, Greece) using two different statistical analysis models, a bivariate model represented by frequency ratio (FR), and a multivariate model represented by logistic regression (LR). For the implementation of the models, the relationship between geo-environmental factors contributing to landslides and documented events related to the 17th November 2015 earthquake was investigated by geographic information systems (GIS)-based analysis. A landslide inventory with events attributed to the specific earthquake was prepared using satellite imagery interpretation and field surveys. Eight factors: Elevation, slope angle, slope aspect, distance to main road network, distance to faults, land cover, geology, and peak ground acceleration (PGA), were considered and used as thematic data layers. The prediction capability of the models and the accuracy of the resulting susceptibility maps were tested by a standard validation method, the receiver operator characteristic (ROC) analysis. Based on the validation results, the output map with the highest reliability could potentially constitute an ideal basis for use within regional spatial planning as well as for the organization of emergency actions by local authorities. |
| first_indexed | 2024-12-11T09:25:05Z |
| format | Article |
| id | doaj.art-49c72d4f30a349ca86647c061e88e121 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-12-11T09:25:05Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-49c72d4f30a349ca86647c061e88e1212022-12-22T01:13:11ZengMDPI AGGeosciences2076-32632019-08-019835010.3390/geosciences9080350geosciences9080350Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada IslandChristos Polykretis0Kleomenis Kalogeropoulos1Panagiotis Andreopoulos2Antigoni Faka3Andreas Tsatsaris4Christos Chalkias5Department of Geography, Harokopio University, El. Venizelou 70, 17671 Athens, GreeceDepartment of Geography, Harokopio University, El. Venizelou 70, 17671 Athens, GreeceDepartment of Geography, Harokopio University, El. Venizelou 70, 17671 Athens, GreeceDepartment of Geography, Harokopio University, El. Venizelou 70, 17671 Athens, GreeceSchool of Engineering, Department of Surveying & Geoinformatics Engineering, University of West Attica, Ag. Spyridonos 28, 12243 Athens, GreeceDepartment of Geography, Harokopio University, El. Venizelou 70, 17671 Athens, GreeceThe main purpose of this study is to comparatively assess the susceptibility of earthquake-triggered landslides in the island of Lefkada (Ionian Islands, Greece) using two different statistical analysis models, a bivariate model represented by frequency ratio (FR), and a multivariate model represented by logistic regression (LR). For the implementation of the models, the relationship between geo-environmental factors contributing to landslides and documented events related to the 17th November 2015 earthquake was investigated by geographic information systems (GIS)-based analysis. A landslide inventory with events attributed to the specific earthquake was prepared using satellite imagery interpretation and field surveys. Eight factors: Elevation, slope angle, slope aspect, distance to main road network, distance to faults, land cover, geology, and peak ground acceleration (PGA), were considered and used as thematic data layers. The prediction capability of the models and the accuracy of the resulting susceptibility maps were tested by a standard validation method, the receiver operator characteristic (ROC) analysis. Based on the validation results, the output map with the highest reliability could potentially constitute an ideal basis for use within regional spatial planning as well as for the organization of emergency actions by local authorities.https://www.mdpi.com/2076-3263/9/8/350landslide susceptibility2015 earthquakefrequency ratiologistic regressionGISGreece |
| spellingShingle | Christos Polykretis Kleomenis Kalogeropoulos Panagiotis Andreopoulos Antigoni Faka Andreas Tsatsaris Christos Chalkias Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada Island Geosciences landslide susceptibility 2015 earthquake frequency ratio logistic regression GIS Greece |
| title | Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada Island |
| title_full | Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada Island |
| title_fullStr | Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada Island |
| title_full_unstemmed | Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada Island |
| title_short | Comparison of Statistical Analysis Models for Susceptibility Assessment of Earthquake-Triggered Landslides: A Case Study from 2015 Earthquake in Lefkada Island |
| title_sort | comparison of statistical analysis models for susceptibility assessment of earthquake triggered landslides a case study from 2015 earthquake in lefkada island |
| topic | landslide susceptibility 2015 earthquake frequency ratio logistic regression GIS Greece |
| url | https://www.mdpi.com/2076-3263/9/8/350 |
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