Victoria Miller

Victoria Miller
University of the West Indies, St. Augustine | UWI · Seismic Research Centre - Montserrat Volcano Observatory

PhD Geosciences (The Pennsylvania State University, USA)

About

62
Publications
10,200
Reads
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464
Citations
Introduction
Additional affiliations
October 2017 - present
University of the West Indies, St. Augustine
Position
  • Volcanologist
January 2012 - September 2017
Geoscience Australia
Position
  • Volcanologist / Seismologist - Natural Hazard and Risk Modeller

Publications

Publications (62)
Article
The eruptions of andesite volcanoes are explosively catastrophic and notoriously difficult to predict. Yet changes in shear waveforms observed after an eruption of Mount Ruapehu, New Zealand, suggest that forces generated by such volcanoes are powerful and dynamic enough to locally overprint the regional stress regime, which suggests a new method o...
Article
Full-text available
The andesite stratovolcano of Soufrière Hills, Montserrat, has been intermittently erupting since 1995. Eruption onset seismicity (July - August 1995) extended to depths >5 km whereas more recent seismicity has been confined to the upper 4 km. Here we explore volcanotectonic earthquake activity during the early stages of volcanic activity at Soufri...
Article
Global Positioning System (GPS) receivers were installed on Ruapehu volcano for a 10 month experiment to determine their utility for providing continuous real‐time deformation monitoring. Several processing runs were carried out to study the effects of ionospheric and tropospheric modelling and the use of predicted orbits on the noise levels of rel...
Article
Full-text available
Volcanic ash is an increasingly common, long-range hazard, impacting on our globalised society. The Asia-Pacific region is rapidly developing as a major contributor to the global population and economy and is home to one-quarter of the world’s active volcanoes. Here we present a regional-scale volcanic ash hazard assessment for the Asia-Pacific usi...
Article
Full-text available
The primary goal of operational volcano monitoring is the timely identification of volcanic unrest. This provides critical information to decision makers tasked with mitigating the societal impacts of volcanic eruptions. Volcano deformation is recognized as a key indicator of unrest at many active volcanoes and can be used to provide insight into t...
Conference Paper
volcanoes can be a far-field source which is often overlooked in hazard assessments. There are several mechanisms for volcanic-tsunami events; underwater explosion, blasts, pyroclastic flows, caldera collapse, subaerial failure and submarine failure. A key component in including these events in hazard assessments is being able to identify and chara...
Article
Tsunami hazard maps are generated for the coastline of the Mentawai Islands, West Sumatra, Indonesia, to support evacuation and disaster response planning. A random heterogeneous slip generator is used to forward model a suite of earthquake rupture scenarios on the Mentawai Segment of the Sunda Subduction Zone. Up to 1000 rupture models that fit co...
Article
The historical record shows that tsunamis generated by non-seismic sources (such as landslides, caldera collapse, pyroclastic flows) have resulted in significant economic damage and loss of life. The majority of these non-seismic tsunamis are closely associated with volcanic edifices and therefore the vast majority are closely associated with volca...
Article
Full-text available
Significant advances have been made in recent years in probabilistic analysis of geological hazards. Analyses of this kind are concerned with producing estimates of the probability of occurrence of a hazard at a site given the location, magnitude, and frequency of hazardous events around that site; in particular Probabilistic Seismic Hazard Analysi...
Article
Full-text available
This study investigates whether eight different Synthetic Finite Fault Models (SFFM) can simulate stochastic earthquake-tsunami with similar statistical properties to ‘real’ earthquake-tsunami events, where the latter are represented using heterogeneous slip distributions from sixty-six Finite Fault Inversions (FFI) for oceanic subduction-interface...
Chapter
Full-text available
All explosive volcanic eruptions generate volcanic ash, fragments of rock that are produced when magma or vent material is explosively disintegrated. Volcanic ash is then convected upwards within the eruption column and carried downwind, falling out of suspension and potentially affecting communities across hundreds, or even thousands, of square ki...
Chapter
Full-text available
Originally prepared for the United Nations Office for Disaster Risk Reduction, this is the first comprehensive assessment of global volcanic hazards and risk, presenting the state of the art in our understanding of global volcanic activity. It examines our assessment and management capabilities, and considers the preparedness of the global scientif...
Conference Paper
Papua New Guinea and Australia have a long-standing and ongoing association in understanding volcanic risk. The Australian Federal Government established the Rabaul Volcanological Observatory (RVO) in Papua New Guinea (PNG), following the devastating 1937 Rabaul eruption, which killed over 500 people and caused widespread damage. The Australian Bur...
Conference Paper
Volcanic ash is a natural hazard with global reach, as ash can be transported thousands of kilometres from a given volcanic eruption and cross national boundaries to impact vulnerable environmental and societal elements. Given the widespread nature of ash hazard and increasing levels of globalisation, an understanding of the likelihood of hazard on...
Chapter
Full-text available
Since 1995 the eruption of the andesitic Soufrie`re Hills Volcano (SHV), Montserrat, has been studied in substantial detail. As an important contribution to this effort, the Seismic Experiment with Airgunsource-Caribbean Andesitic Lava Island Precision Seismogeodetic Observatory (SEA-CALIPSO) experiment was devised to image the arc crust underlying...
Article
Since 1995 the eruption of the andesitic Soufrière Hills Volcano (SHV), Montserrat, has been studied in substantial detail. As an important contribution to this effort, the Seismic Experiment with Airgunsource-Caribbean Andesitic Lava Island Precision Seismo-geodetic Observatory (SEA-CALIPSO) experiment was devised to image the arc crust underlying...
Conference Paper
Volcano-tectonic (VT) earthquakes are interpreted as resulting from fault slip induced by magma pressurisation; analysis of VT earthquakes can provide information on the magma storage and transport system, and magma-induced stress states. The Soufriere Hills volcano, Montserrat, has been active intermittently since 1995. Early in the eruption numer...
Article
Full-text available
The SEA-CALIPSO experiment in December 2007 incorporated a sea-based airgun source, and seismic recorders both on Montserrat and on the adjacent sea floor. A high quality subset of the data was used for a first arrival P-wave velocity tomographic study. A total of more than 115,000 traveltime data from 4413 airgun shots, and 58 recording stations,...
Article
Full-text available
The SEA-CALIPSO experiment was designed to image structure related to active volcanism beneath the island of Montserrat in the Caribbean. As part of that experiment, over 200 Texan recorders with 5 Hz geophones were deployed in 3 linear arrays at a nominal spacing of 100 m, primarily to record an airgun source towed offshore around the island. Beca...
Conference Paper
Montserrat, located in the northern Lesser Antilles Arc, is home of the Soufriere Hills Volcano (SHV), an active island arc volcano that has been in an eruptive episode since mid-1995. This recent activity has been characterized by four cycles of lava dome building with occasional explosions and dome collapse, interspersed with periods of relative...
Article
The Sea-Calipso offshore/onshore experiment was conducted in December 2007 to image the seismic velocity structure of the island of Montserrat. Seismic signals were generated by a towed airgun array at 60 second intervals along a series of circles and radial lines around the island. A total of 4,414 shots were recorded by a network consisting of 20...
Conference Paper
Soufriere Hills Volcano, Montserrat has been erupting intermittently since 1995 and remains active. Early seismicity, including precursor events that commenced in 1992, began at poorly constrained depths of 5-10 km, but recent activity has been at depths less than 5 km. Mineralogical evidence suggests magma depths greater than 5 km beneath the surf...
Conference Paper
The andesite stratovolcano of Soufriere Hills (SHV), Montserrat, has been intermittently erupting for the past 13 years. During the eruption a range of techniques have been employed both to monitor the activity status and to examine the nature of the magmatic system. In 2007, as part of the SEA-CALIPSO project, there was a deployment of 29 continuo...
Conference Paper
We investigate resolution and velocity-model dependence of volcano-seismic event locations beneath the Island of Montserrat. Our focus is on seismic events from the early stages of the eruption of Soufriere Hills Volcano which began an intermittent eruptive episode in 1995 that continues today. Our ultimate goal is to relocate events in 3D velocity...
Conference Paper
Volcano-tectonic (VT) earthquakes are interpreted as resulting from slip on fractures or faults induced by magma pressurisation. Examination of VT earthquakes can provide information on areas of magma storage and any induced stress state due to such pressurisation. The andesite stratovolcano of Soufriere Hills, Montserrat began showing an increase...
Conference Paper
The CALIPSO Project (Caribbean Andesite Lava Island-volcano Precision Seismo-geodetic Observatory) has greatly enhanced the monitoring and scientific infrastructure at the Soufrière Hills Volcano, Montserrat with the recent installation of an integrated array of borehole and surface geophysical instrumentation at four sites (Mattioli et al., 2004)...
Conference Paper
Project CALIPSO (Caribbean Andesite Lava Island Precision Seismo-geodetic Observatory) aims to investigate the magmatic system at the active Soufriere Hills Volcano (SHV), Montserrat. The collaborative project involves several institutions acting in partnership with the Montserrat Volcano Observatory (MVO), and is funded by NSF with assistance by N...
Conference Paper
The andesite stratovolcano of Soufriere Hills (SHV), Montserrat, has been intermittently erupting now for 9 years. Previous work (Aspinall et al., 1998) has examined hypocenter locations for events 1995 - 1997 to map possible magma migration pathways and domains sensitive to stress redistributions caused by magmatic processes. This indicated a NE-S...
Conference Paper
Project CALIPSO (Caribbean Andesite Lava Island-volcano Precision Seismo-geodetic Observatory) was developed in order to investigate the magmatic system at the exceedingly active Soufriere Hills Volcano (SHV), Montserrat. The collaborative project involves a number of institutions acting in partnership with the Montserrat Volcano Observatory (MVO),...

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Projects

Projects (3)
Project
Project created to share scientific research, including publications and other materials associated with the eruption of La Soufriere Volcano on St. Vincent, which began with effusive activity on 27 December 2020 and changed to explosive activity on 9th April 2021.
Project
Understanding the challenges and opportunities for undertaking volcano science in a resource-limited context