Strengthen Resilience in Volcanic Areas (STREVA)

Lead Research Organisation: University of Leeds
Department Name: School of Earth and Environment

Abstract

STREVA will bring together researchers from universities, research institutes and volcano observatories, to explore
methods for reducing the negative consequences of volcanic activity on communities. We will work both with the
communities facing volcanic threats, and with those responsible for monitoring, preparing for and responding to those
threats. Our main partners are volcano monitoring agencies and observatories in Colombia, the Caribbean and Ecuador,
and through them, disaster managers and disaster researchers throughout the region, as well as residents of communities
at risk. We will use a number of techniques to build links between the project and the wider community, including
workshops, running scenario exercises, and using social media to report our results. Our aim, by working collaboratively
across different disciplines, is to develop and apply a risk assessment framework that will help communities to develop
better plans for living in volcanic areas that reduce the negative consequences of volcanic activity.
Volcanic risk is a complex problem, which we shall understand by investigating a number of volcanoes across the region.
These case studies will help us to identify common issues in volcanic disaster risk and ultimately develop regional hazard
assessment processes. These will be crucial for long-term planning to reduce the exposure of people and communities to
volcanic hazards. The countries in which we will work are all middle income and face multiple volcanic threats, often in
close proximity to large towns and cities. The main focus will be on seven volcanic sites across the Lesser Antilles,
Ecuador and Colombia.

We will begin the project by reviewing the secondary literature on three well monitored and active volcanoes, to understand
what has already been done to understand and reduce risk to the surrounding population. We will then take these lessons
and apply them to three high-risk volcanoes where monitoring and understanding is less advanced. Through in-depth
empirical research in these volcanic areas we shall begin to develop, test and apply our new risk assessment framework
and methods for application..

STREVA's work will generate improvements in:
(i) methods for forecasting the start of eruptions and changes in activity during eruption;
(ii) prediction of areas at-risk (the "footprint") from different volcanic hazards;
(iii) understanding of the factors that make people and their assets more vulnerable to volcanic threats;
(iv) understanding of institutional constraints and capacities and how to improve incentives for risk reduction

By the end of the project, our new knowledge will help us to measure volcanic risk more accurately, and monitor how that
risk is changing. The practical results will be a strengthening in the capacity of stakeholders at different scales (staff in
volcano observatories, local and national governments and NGOs) to produce risk assessments for high-risk volcanoes
and use them to improve preparedness and response to volcanic emergencies and build resilience in the surrounding
communities through long-term planning. In adopting this approach, STREVA will have real impacts in real places, and will
significantly advance the fields of volcanic risk analysis and disaster risk reduction.

Planned Impact

STREVA intends to achieve a set of research aims that will create new knowledge for the improved analysis of volcanic
risk. This analysis, focussed around 3 'forensic' and 3 'trial' volcanic settings will help shape the process of integrating
volcanic risk management in appropriate policies at local, national and regional level.

This will depend on STREVA forging trusted relationships with key stakeholders, having compelling and clearly
communicated evidence and developing a good understanding of complex policy processes. In turn, if implemented well,
such policies will help to strengthen the resilience of people and assets exposed to volcanic hazards. Policies may include
measures to restrict land uses, establish new early warning systems, develop new building code guidance, support
particular approaches to relocation, foster social protection and poverty reduction schemes or invest in improved education
or new communications protocols during crises. In working towards such an impact, STREVA intends to show by example that interdisciplinary research can be applied in volcanic settings in ways that lead to increases in the resilience of communities at risk.

Outputs of the research undertaken by STREVA will benefit a number of end users, both immediately and over the longer term. By working with a range of local and regional stakeholders to achieve a better understanding of the components and dynamics of risk in volcanic areas, STREVA aims to improve the policies and practices of businesses, public sector agencies and non-government organisations responsible for reducing disaster risk and building societal resilience. Those benefitting directly from this research include local governments and other public sector agencies based or working close to the 'trial' volcanoes, such as civil defence authorities, observatories and local elected officials. Although there have been recent signs of unrest, no eruptions have taken place hence local authorities have little experience managing the associated risks. They will be consulted throughout the project and involved in work on forecasting and characterising vulnerability and institutional capacity to deal with different aspects of volcanic risk as well as volcanic unrest simulation exercises.

Information produced by WPs 1-4 can be used immediately by these stakeholders to improve decision making, in particular with regard to evacuations and land-use planning in high risk areas. Information from the 'forensic' studies will be made available to local decision makers at the trial volcanoes to help them understand the interactions between different dimensions of risk. These outputs will continue to be of use to policymakers over the longer term as risk conditions change, as STREVA will develop innovative methods for incorporating broader understandings of risk into quantitative risk assessments and applying these to dynamic, changing risk situations.

Beyond the trial volcanoes, national public sector agencies will also benefit indirectly from this research, with the potential for national policies to be strengthened from the inclusion of updated approaches to manage volcanic risk; protecting key infrastructure and other assets. Within the private sector, insurance companies will benefit from national and regional volcanic risk assessments, which may help to support the development of parametric insurance products for inclusion with the Caribbean Catastrophic Risk Insurance Facility for example. Other likely beneficiaries include international and local NGOs working on disaster risk reduction at community and policy level, who will be helped by more detailed analysis of exposure, vulnerability and capacity in study regions, enabling them to develop enhanced advocacy strategies or community-based disaster risk reduction plans. Ultimate beneficiaries will be people at risk of volcanic hazards, who will have increased safety as a result of STREVA's work on trial volcanoes.

Publications

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Contreras-Arratia R (2019) Complex seismic sources in volcanic environments: Radiation modelling and moment tensor inversions in Journal of Volcanology and Geothermal Research

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Harnett C (2018) Using a discrete element approach to model lava dome emplacement and collapse in Journal of Volcanology and Geothermal Research

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Marsden L (2019) Topography and Tilt at Volcanoes in Frontiers in Earth Science

 
Description Together with project partners in Ecuador we identified shear stress in the conduit as the main reason for the deformation patterns on Tungurahua. Based on these findings we developped a technique to assess the eruption potential of volcanoes in Ecuador by jointly evaluating the deformation/tilt signal and the seismicity on the in the monitoring record. A drop in tilt together with an increase in seismicity was observed before major volcanic explosions. We are now extending the search for these [patterns to other volcanoes in Ecuador for which data are available.
Exploitation Route We are developping now a tool to be used in the volcano observatory of Tungurahua that provides the probability of an imminent volcanic explosion. For the academic community we have now published the findings and, through a NERC funded PhD project, we follow up the results to bring the technique into an operational level in observatories.
Sectors Communities and Social Services/Policy,Environment

 
Description Modelling of shear stress on Tungurahua volcano led to a better understanding of the tilt signal that is being used to forecast Vulcanian eruptions by observatory staff in Ecuador. This is strengthening resilience in this particular volcanic settings.
First Year Of Impact 2017
Sector Environment
Impact Types Societal,Policy & public services

 
Title Data associated with 'Real-time prediction of rain-triggered lahars: incorporating seasonality and catchment recovery' 
Description The rainfall and rain-triggered lahar record of the Belham River Valley, Montserrat between April 2010 and April 2012. The rainfall record comprises 0.1 mm resolution hourly precipitation data recorded at the Montserrat Volcano Observatory helipad gauge between Feb 2010 and Feb 2011, the St. George's Hill gauge between March 2011 and May 2011, and the maximum of the St. George's Hill and Windy Hill gauges between May 2011 and Feb 2012. The lahar database is compiled from visual inspection of seismic records and visual observations, and lahars are categorised based on magnitude (small, medium or large). Lahar signals were cross referenced to visual observations and carefully excluded from signals associated with primary volcanic activity and other seismic noise (such as construction vehicles). 
Type Of Material Database/Collection of data 
Year Produced 2017 
Provided To Others? Yes  
 
Description Using seismicity and tilt signals to forecast volcanic eruptions 
Organisation The Geophysical Institute of the National Polytechnic School of Ecuador (IG-EPN)
Country Ecuador 
Sector Academic/University 
PI Contribution Two training seminars in Quito, Ecuador
Collaborator Contribution Travel & subsistence during seminars and research meetings
Impact Two publications in progress; changes in volcanic monitoring routines at observatories established.
Start Year 2014