Q-LAVHA: A flexible GIS plugin to simulate lava flows

Mossoux, Sophie; Saey, Mathijs; Bartolini, Stefania; Poppe, Sam; Canters, Frank; Kervyn, Matthieu

doi:10.1016/j.cageo.2016.09.003

Cited by 51 publications

(86 citation statements)

References 35 publications

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“…To accurately forecast the distribution of volcanic hazards, useful and powerful tools for volcanic hazard analysis are essential [32]. A variety of volcanic hazard assessment tools have been developed during the past few decades, many of which are specific to a single hazard type, e.g., Q-LavHA [33] for lava flows, Tephra 2 [34,35] and Hazmap [36] for tephra, the Energy Cone [37,38], and the Energy Line [39] models for pyroclastic density currents (PDCs). While these tools may more or less accurately map the distribution and impact of a given volcanic hazard type, they do not allow an assessment of multiple hazards and their associated risk.…”

Section: Volcanic Hazard Simulationsmentioning

confidence: 99%

Testing a Comprehensive Volcanic Risk Assessment of Tenerife by Volcanic Hazard Simulations and Social Vulnerability Analysis

Liu

Chen

et al. 2020

IJGI

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Volcanic activity remains highly detrimental to populations, property and activities in the range of its products. In order to reduce the impact of volcanic processes and products, it is critically important to conduct comprehensive volcanic risk assessments on volcanically active areas. This study tests a volcanic risk assessment methodology based on numerical simulations of volcanic hazards and quantitative analysis of social vulnerability in the Spanish island of Tenerife, a well-known tourist destination. We first simulated the most likely volcanic hazards in the two eruptive scenarios using the Volcanic Risk Information System (VORIS) tool and then evaluated the vulnerability using a total of 19 socio-economic indicators within the Vulnerability Scoping Diagram (VSD) framework by combining the analytic hierarchy process (AHP) and the entropy method. Our results show good agreement with previous assessments. In two eruptive scenarios, the north and northwest of the island were more exposed to volcanic hazards, and the east registered the highest vulnerability. Overall, the northern municipalities showed the highest volcanic risk in two scenarios. Our test indicates that disaster risk varies greatly across the island, and that risk reduction strategies should be prioritized on the north areas. While refinements to the model will produce more accurate results, the outputs will still be beneficial to the local authorities when designing policies for volcanic risk reduction policies in Tenerife. This study tests a comprehensive volcanic risk assessment for Tenerife, but it also provides a framework that is applicable to other regions threatened by volcanic hazards.

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Section: Volcanic Hazard Simulationsmentioning

confidence: 99%

Testing a Comprehensive Volcanic Risk Assessment of Tenerife by Volcanic Hazard Simulations and Social Vulnerability Analysis

Liu

Chen

et al. 2020

IJGI

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“…eruptive zones (e.g., vents, fissures and surfaces) on a digital elevation model (DEM). Q-LavHA combines different models that determine the spatial propagation of a channelized 'a'ā lava and its terminal length using an iterative approach (Mossoux et al, 2016). It provides for each pixel a value between 0 and 1, which represents the pixel probability to be inundated during a next eruption.…”

Section: Lava Flow Hazard Mapmentioning

confidence: 99%

“…A well-developed transport network is essential to the smooth running of a country since it plays an important role in supporting social and economic activities (Hong et al, 2015;Jenelius et al, 2006;Mattsson and Jenelius, 2015;Nagurney and Qiang, 2012). A reliable road network is even more important in a hazardous environment where the connection of villages to strategic infrastructures such as hospitals, fire stations, and commercial and employment centers must be guaranteed, particularly when a hazard occurs.…”

Section: Introductionmentioning

confidence: 99%

“…Some metrics have been proposed to characterize vulnerability of the population to road disruptions at different administrative levels (e.g., municipalities, states) (Jenelius et al, 2006) and accessibility to main road axes before and after the occurrence of a natural hazard (Sohn, 2006;Taylor and Susilawati, 2012). Other studies assess the robustness of the road network as a whole, defined as the degree to which the system can function correctly according to its design specifications S. Mossoux et al: Accessibility of critical services in case of a hazard in the presence of serious disruptions (Bil et al, 2014;Chang and Nojima, 2001;Immers et al, 2004;Institute of Electrical and Electronics Engineers, 1991;Nagurney and Qiang, 2012;Sullivan et al, 2010). At a more local scale, previous research has characterized vulnerability at the level of individual road segments.…”

Section: Introductionmentioning

confidence: 99%

“…Several types of disruption can lead to a road failure (e.g., accidents, technical failures, hazards or antagonistic actions). Natural hazards, events such as floods (e.g., Hong et al, 2015;Sohn, 2006), landslides (e.g., Postance et al, 2017), earthquakes (e.g., Chang and Nojima, 2001;Peeta et al, 2010), ashfall (e.g., Blake et al, 2017) or lava flows, can cause serious perturbation as roads may be interrupted or road conditions may deteriorate (Mattsson and Jenelius, 2015). Road disruptions are often integrated in hazard studies through scenarios which focus on specific locations of the network.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessing the impact of road segment obstruction on accessibility of critical services in case of a hazard

Mossoux

Kervyn

Canters

2019

Nat. Hazards Earth Syst. Sci.

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Abstract. Development of hazard maps is one of the measures promoted by the international community to reduce risk. Hazard maps provide information about the probability of given areas to be affected by one or several hazards. As such they are useful tools to evaluate risk and support the development of safe policies. So far studies combining hazard mapping with accessibility to services are few. In hazardous environments, accessibility of the population to strategic infrastructure is important because emergency services and goods will principally be offered at or provided from these locations. If a road segment is blocked by a hazard, accessibility to services may be affected, or worse, people may be completely disconnected from specific services. The importance of each road segment in the transport network as a connecting element enabling access to relevant services is therefore critical information for the authorities. In this study, we propose a new application of hazard mapping which aims to define the importance of each road segment in the accessibility to services, taking into account the probability of being affected by a hazard. By iteratively removing one segment after the other from the road network, changes in accessibility to critical infrastructure are evaluated. Two metrics of road segment importance considering the population affected and the hazard probability are calculated for each segment: a road accessibility risk metric and a users' path vulnerability metric. Visualization of these road metrics is a useful way of valuing hazard maps and may help to support discussions about the development of new infrastructure, road capacity increase and maintenance of existing infrastructures, and evacuation procedures.

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A review of mass and energy flow through a lava flow system: insights provided from a non-equilibrium perspective

Tarquini

2017

Bull Volcanol

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Q-LAVHA: A flexible GIS plugin to simulate lava flows

Cited by 51 publications

References 35 publications

Testing a Comprehensive Volcanic Risk Assessment of Tenerife by Volcanic Hazard Simulations and Social Vulnerability Analysis

Testing a Comprehensive Volcanic Risk Assessment of Tenerife by Volcanic Hazard Simulations and Social Vulnerability Analysis

Assessing the impact of road segment obstruction on accessibility of critical services in case of a hazard

A review of mass and energy flow through a lava flow system: insights provided from a non-equilibrium perspective

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