In the lab I use a range of high temperature machines to investigate magma properties and simulate natural behaviour. I couple this with geophysical monitoring and fieldwork to get a better understanding of volcanic activity.
For a taster of the kind of research I conduct with my colleages see:Overview of active Research Activities
Equipment with which I am proficient includes:
• High-velocity rotary shear apparatus used to study frictional properties of magmas in University of Liverpool (UoL), University of Padua and JAMSTEC;
• Permeability measuremnts using a 200MPa Sanchez permeameter at UoL;
• Triaxial deformation tests and in-situ permeability tests using MAGDA - a Sanchez triaxial press at UoL;
• High temperature, uniaxial compression and tension apparatus at UoL;
• High temperature uniaxial presses for rheology studies at UoL and LMU, Munich;
• Strength tests using room-temperature, uniaxial presses at UoL and UCL;
• Electron back-scatter diffraction (EBSD) on volcanic rocks using CamScan and Philips SEMs at the UoL;
• Use of continuous AE monitoring systems during magma deformation experiments at UCL and LMU;
• Use of piezoelectric sensors to measure ultrasonic velocity of rocks (including designing the rig);
• High-temperature furnaces for thermal stressing experiments and handling melt;
• Rock-magnetic property characterisation by VFTB;
• Temperature dependence of susceptibility using a Kappabridge;
• Rapid decompression experiments to establish fragmentation threshold and permeability using the “fragmentation bomb” at LMU;
• TinyPerm portable permeameter for in-situ measurements;
• FLIR infra-red imaging of experiments and explosive volcanic eruptions;
• Wavelength Dispersive analysis (WDA) on a CAMECA SX100 scanning electron microprobe (SEM);
• X-ray fluorescence using a Phillips Magix-Pro X-ray fluorescence spectrometer;
• Differential scanning calorimetry on a NETZSCH DSC 404 F1 Pegasus;
• Viscosity measurements by Micropenetration using a push-rod Bähr 802 V dilatometer;
• Powder X-ray diffraction using a Philips X’Pert Pro Multipurpose X-ray Diffractometer;
Many articles of equipment above are available in the Volcanology Laboratories at University of Liverpool:Volcanology Facilities at University of Liverpool
I have a particular interest in deformation and shear structures across scales, but I have conducted a wide range of fieldwork across a broad spectrum of field localities.
• Sample collection and mapping of the Holuhraun/ Bárðarbunga fissure eruption.
• Structural mapping, thermal monitoring and in-situ permeability at Nisyros Caldera, Greece.
• Thermal, seismic and acoustic monitoring at Pacaya volcano, Guatemala.
• Structural mapping, in-situ permeability and sample collection at Pacaya volcano, Guatemala.
• Structural investigations and in-situ permeability at Mount Unzen, Japan.
• Ash collection at Sakurajima volcano, Japan.
• Structural mapping at Glencoe, Scotland.
• Mapping of columnar jointing morphologies in basalt and sample collection in Iceland.
• Structural mapping of the dome and sample collection at Volcán de Colima, Mexico.
• Structural mapping and sample collection at Ceborucco volcano, Mexico.
• Reconnaissance fieldtrip to the “giant pumices” of La Primavera, Mexico.
• Remote monitoring and sampling at the Soufrière Hills volcano, Montserrat.
• Mapping of shear zones at Tarawera volcano, New Zealand.
• Preliminary visit and sample collection at Ngongataha volcano, New Zealand.
• Sample collection in and around Mount St. Helens, Washington in collaboration with the USGS, University College London and the University of British Colombia.
• Lava flow mapping and sample collection at Newberry Caldera, Oregon (with the USGS and US Forest Service).
• Logging of tephra deposits at Mount St. Helens (with USGS and PIRE).
• Assistance with the deployment of spiders (portable telemetered stations) at Mount St. Helens for the OASIS (Optimized Autonomous Space In-situ Sensorweb) hazard monitoring project.
• Setting up GPS and seismic base stations at Crater Lake, Oregon (with CVO).
• Mapping volcanic deposits cut by the Toutle River, Washington (with CVO).
• GPR and magnetic surveys in the Abruzzo Mountains, Central Italy.
• Mapping training - Ries Crater, Pyrenees, Lake District, and Isle of Arran.
• Undergraduate Field training - Measuring density and magnetic anomalies at Campi Flegrei, Italy; Sedimentary logging, Spain; Logging of explosive volcanic deposits at Vesuvius, Italy; Introduction to structural geology, Devon and Cornwall and Isle of Wight.
Understanding the frictional behaviour of volcanic rocks and magmas
LEVERHULME TRUST (UK)
January 2017 - February 2020