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Dr Juliet Biggs
Dr Juliet Biggs
BA, MSci(Cantab), PhD(Oxon)
Area of research
The use of InSAR to understand the physics of the processes that deform the earth's surface
My research primarily uses Interferometric Synthetic Aperture Radar (InSAR) to understand the physics of the processes that deform the earth's surface. Recent developments in satellite geodesy are providing a new perspective on continental tectonics and volcanic processes through observations of aseismic processes such as interseismic strain accumulation, postseismic relaxation and magma intrusion.
These measurements can identify the mechanisms controlling continental deformation and quantify the constitutive laws controlling rheology. My current areas of interest are the East African Rift and the volcanoes of Central America and the Northern Andes. Practical applications of my work include seismic and volcano hazard assessment and geothermal resources.
I received BA and MSci degrees in Natural Sciences in 2003 from the University of Cambridge where I specialised in geology and geophysics. Since then, I’ve been using Earth Observation data to study active tectonic processes such as earthquakes and volcanoes. I received my PhD in 2007 for my work on the earthquake cycle in Alaska. Currently, my work focusses on understanding the volcanic and magmatic processes that cause deformation over a range of timescales. In Central and South America, we are working with volcanic observatories to integrate satellite observations with traditional ground-based monitoring methods and hazard analyses. In East Africa, we are working to understand how and where magma rises and strain accumulates in an active continental rift. I was awarded the 2012 Winton Capital Award of the Royal Astronomical Society and the 2014 Lloyds of London Science of Risk Prize.
Teaching Quality Officer
- magma intrusion
- postseismic relaxation
- aseismic processes
School of Earth Sciences
Earth Sciences staff
- Arnold, D, Biggs, J, Wadge, G, Ebmeier, S, Odbert, H & Poland, M, 2016, Dome growth, collapse, and valley fill at Soufrière Hills Volcano, Montserrat, from 1995 to 2013: Contributions from satellite radar measurements of topographic change. Geosphere, vol 12.
- Wadge, G, Biggs, J, Lloyd, R & Kendall, JM, 2016, Historical volcanism and the state of stress in the East African Rift System. Frontiers in Earth Science, vol 4.
- Parker, AL, Biggs, J & Lu, Z, 2016, Time-scale and mechanism of subsidence at Lassen Volcanic Center, CA, from InSAR. Journal of Volcanology and Geothermal Research, vol 320., pp. 117-127
- Hutchison, W, Pyle, DM, Mather, TA, Yirgu, G, Biggs, J, Cohen, BE, Barfod, DN & Lewi, E, 2016, The eruptive history and magmatic evolution of Aluto volcano: new insights into silicic peralkaline volcanism in the Ethiopian rift. Journal of Volcanology and Geothermal Research.
- Robertson, E, Biggs, J, Edmonds, M, Clor, L, Fischer, TP, Vye-Brown, C, Kianji, G, Koros, W & Kandie, R, 2016, Diffuse degassing at Longonot volcano, Kenya: Implications for CO2 flux in continental rifts. Journal of Volcanology and Geothermal Research.
- Naranjo, MF, Ebmeier, S, Vallejo, S, Ramón, P, Mothes, P, Biggs, J & Herrera, F, 2016, Mapping and measuring lava volumes from 2002 to 2009 at El Reventador Volcano, Ecuador, from field measurements and satellite remote sensing. Journal of Applied Volcanology, vol 5.
- Biggs, J, Robertson, E & Cashman, KV, 2016, The lateral extent of volcanic interactions during unrest and eruption. Nature Geoscience, vol 9., pp. 308-311
- Robertson, E, Biggs, J, Cashman, K, Michael & Floyd, A, 2015, Influence of regional tectonics and pre-existing structures on the formation of elliptical calderas in the Kenyan Rift. Geological Society Special Publications, vol 420., pp. 43-67
- Hutchison, W, Mather, TA, Pyle, DM, Biggs, J & Yirgu, G, 2015, Structural controls on fluid pathways in an active rift system: A case study of the Aluto volcanic complex. Geosphere, vol 11., pp. 542-562
- Parks, MM, Moore, JDP, Papanikolaou, X, Biggs, J, Mather, TA, Pyle, DM, Raptakis, C, Paradissis, D, Hooper, A, Parsons, B & Nomikou, P, 2015, From quiescence to unrest: 20 years of satellite geodetic measurements at Santorini volcano, Greece. Journal of Geophysical Research: Solid Earth, vol 120., pp. 1309-1328
Dr Biggs currently teaches 6 courses:
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