GIS-Based Quantitative Landslide Risk Assessment Approach for Property and Life at Bartin Hepler

2021 ◽  
pp. 1623-1636
Author(s):  
Arzu Erener ◽  
Gülcan Sarp ◽  
Şebnem Düzgün
Keyword(s):  
Risk Assessment ◽  
At Risk ◽  
Landslide Risk ◽  
Landslide Occurrence ◽  
Damage Probability ◽  
Landslide Risk Assessment ◽  
Assessment Approach ◽  
Damage Probability Matrix ◽  
Element At Risk ◽  
Work Done

In Turkey, landslides are the second most common natural disasters that cause damages in Turkey that follow the earthquakes. Thus, landslide risk assessment is of crucial importance in this area. Therefore in this study a quantitative approach for mapping landslide risk is developed for property and life at local scale. The approach is first based on the identification of existing elements at risk in the area by the developed algorithm. Then the vulnerability approach focuses on determination of quantitative vulnerability values for each element at risk by considering temporal and spatial impacts by adopting a “damage probability matrix“ approach. The loss estimation was combined with the hazard values which are based on former work done in Bartın Kumluca area where a detailed study of landslide occurrence and hazard in the recent past (last 30 years) was carried out. The final result risk maps for property ($/pixel/year) and life (life/pixel/year) shows all losses per pixel annually for each element at risk in Hepler village.

scholarly journals Landslide risk assessment in slopes and hillsides. Methodology and application in a real case

DYNA ◽  
2019 ◽  
Vol 86 (208) ◽  
pp. 143-152
Author(s):  
Alex Fernando Ruiz Pozo ◽  
Haidee Yuladi Jaramillo ◽  
ROMEL JESUS GALLARDO AMAYA
Keyword(s):  
Risk Assessment ◽  
Social Aspects ◽  
Landslide Risk ◽  
Multifactorial Analysis ◽  
Landslide Occurrence ◽  
Deterministic Methods ◽  
Landslide Risk Assessment ◽  
The Impact ◽  
The City ◽  
Event Occurrence

This document describes technical concepts and terms related to landslide risk on slopes and hillsides, from a comprehensive approach. A general methodology is presented for the risk analysis and assessment according to the threat, given by the interrelation susceptibility - probability of landslide occurrence; and the vulnerability of the exposed elements, obtained from a multifactorial analysis that considers physical and social aspects. Susceptibility is obtained considering various conditioning and triggering factors of instability and the probability of event occurrence is estimated from deterministic methods. The vulnerability analysis is done considering the spatial and temporal components of the potential events, as well as the impact that these could have on the exposed elements, in terms of social and material losses. This methodology is applied to the study of an urban slope in the city of Tijuana, Mexico.

scholarly journals An example of landslide risk assessment in a historical site of Central Italy

2000 ◽  
Vol 22 ◽  
Author(s):  
U. Crescenti ◽  
M. L. Rainone ◽  
N. Sciarra
Keyword(s):  
Risk Assessment ◽  
Central Italy ◽  
Landslide Risk ◽  
The Real ◽  
Landslide Occurrence ◽  
Landslide Risk Assessment ◽  
Definition Of ◽  
A Site ◽  
The Village ◽  
Real Danger

In a study of landslide risk assessment, one of the main problems is to define a univocal methodology for evaluating this risk and mapping it. Starting from  the available data about this topic and, in particular,  from the report of Varnes and IAEG ( 1984) edited by UNESCO and synthesised in Italy by Canuti and Casagli (1994), Crescenti (1998) published a critical review of the definitions related to landslide risk evaluation. In fact, treating " hazard " and " the probability of landslide occurrence" as synonymous, does not seem correct, since the term "hazard" corresponds to the real danger situation in a site for the advancing phenomenon . Instead, the probability does not show the real danger state, because not all the landslide phenomena are dangerous for the elements at risk. Furthermore, among the field experts (consultants and decision-makers) the term "hazard" is instinctively connected with the real danger, which is related not only to the probability of occurrence of a landslide phenomenon, but also to its intensity. It is therefore more reasonable to define landslide hazard on the basis of both aspects. With this hazard definition, the way to evaluate the landslide risk has to be reconsidered as well as a new definition of vulnerability is required. In this paper, we applied this methodology for the study of landslides at the Guardiagrele Village, a historical site of Central Italy. The village may be considered to be a representative of other similar villages situated in this part of the Apennines.

scholarly journals Definitions and Concepts for Quantitative Rockfall Hazard and Risk Analysis

Geosciences ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 158
Author(s):  
Didier Hantz ◽  
Jordi Corominas ◽  
Giovanni B. Crosta ◽  
Michel Jaboyedoff
Keyword(s):  
Risk Assessment ◽  
At Risk ◽  
Failure Probability ◽  
Rockfall Hazard ◽  
Process Failure ◽  
Failure Propagation ◽  
Element At Risk ◽  
Hazard And Risk ◽  
Hazard And Risk Assessment ◽  
Definition Of

There is an increasing need for quantitative rockfall hazard and risk assessment that requires a precise definition of the terms and concepts used for this particular type of landslide. This paper suggests using terms that appear to be the most logic and explicit as possible and describes methods to derive some of the main hazards and risk descriptors. The terms and concepts presented concern the rockfall process (failure, propagation, fragmentation, modelling) and the hazard and risk descriptors, distinguishing the cases of localized and diffuse hazards. For a localized hazard, the failure probability of the considered rock compartment in a given period of time has to be assessed, and the probability for a given element at risk to be impacted with a given energy must be derived combining the failure probability, the reach probability, and the exposure of the element. For a diffuse hazard that is characterized by a failure frequency, the number of rockfalls reaching the element at risk per unit of time and with a given energy (passage frequency) can be derived. This frequency is relevant for risk assessment when the element at risk can be damaged several times. If it is not replaced, the probability that it is impacted by at least one rockfall is more relevant.

Forestry and landslides: What's acceptable in BC?

2009 ◽  
Vol 85 (1) ◽  
pp. 25-31 ◽  
Author(s):  
R H Guthrie
Keyword(s):  
Risk Assessment ◽  
Risk Perception ◽  
Key Words ◽  
Public Key ◽  
Expert Advice ◽  
Forest Industry ◽  
Landslide Risk ◽  
Acceptable Risk ◽  
The Public ◽  
Landslide Risk Assessment

Landslides are unavoidably linked to forestry operations in coastal BC. A neglected component of landslide risk assessment is the degree to which impacts from landslides may be acceptable. One hundred and thirteen professionals in the BC forest industry, including foresters, biologists, geoscientists and engineers, examined landslide tolerability criteria. Despite differences by sector, there was general agreement that landslides resultant of ignoring expert advice or where an expert was clearly at fault were unacceptable, and penalties were high. In more ambiguous cases, increased consequences resulted in increased scrutiny and it was clear that experts should expect to be held responsible for their decisions by government officiators and the public. Key words: landslide, risk, risk perception, acceptable risk, landslides and forestry

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