Dr Amy Gilligan
MEarthSci (Oxford), PhD (Cambridge)
I am a Lecturer in Geophysics at the University of Aberdeen, interested in using seismic data to understand tectonic processes that are happening on Earth today, and how these have evolved over geological history.
My current research is focussed on North Borneo where I am using seismic data from the newly deployed nBOSS network to understand what happens in the lithosphere after subduction stops. The nBOSS network is a collaboration between the University of Aberdeen, University of Cambridge, and the Universiti Malaysia Sabah with support from the Malaysian Metrological Service and SeisUK. I use a variety of passive seismic imaging techniques, including receiver functions, surfaces waves and shear-wave splitting to develop models of the crust and mantle, which can then be interpreted in light of tectonic processes that are, or have, taken place. I use these models to help better pinpoint the location of earthquakes that have occurred in North Borneo both to help understand the tectonics in this region and the potential seismic hazard.
Prior to arriving at Aberdeen as a post-doc in 2016, I worked at Imperial College London. There my research focused on the seismic structure of the lithosphere in Eastern Canada. I was involved in the QM-III project (Québec-Maine across three sutures) and managed the network of 10 seismic stations that Imperial College had deployed in Nova Scotia and New Brunswick.
In my PhD research at the University of Cambridge I imaged the structure of the crust and upper mantle in central Asia, with a particular focus on intracontinental deformation taking place in the Kyrgyz Tien Shan and deformation related to the India-Eurasia collision in the Western Himalayas and Western Tibet. These images were made using receiver function, surface waves from earthquakes and ambient noise data to construct shear velocity models for a region covering India, the Tibetan Plateau, the Tarim Basin and the Tien Shan.
- MEarthSci Earth Sciences2010 - University of Oxford
- PhD Seismology2014 - University of Cambridge
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Seismic signature of subduction termination from teleseismic P- and S-wave arrival-time tomography: the case of northern BorneoGondwana Research, vol. 115, pp. 57-70Contributions to Journals: Articles
Cluster analysis of velocity models around the hudson bay region, Eastern CanadaGeophysical Journal International, ggac456Contributions to Journals: Articles
The signature of lithospheric anisotropy at post-subduction continental margins: new insight from XKS splitting analysis in northern BorneoGeochemistry, Geophysics, Geosystems , vol. 23, no. 11, e2022GC010564Contributions to Journals: Articles
Collision-Induced Subduction Polarity Reversal Explains the Crustal Structure of Northern Borneo: New Results From Virtual Deep Seismic Sounding (VDSS)Geophysical Research Letters, vol. 49, no. 19, e2022GL099123Contributions to Journals: Articles
Post-Subduction Tectonics of Sabah, Northern Borneo, Inferred From Surface Wave TomographyGeophysical Research Letters, vol. 49, no. 3, e2021GL096117Contributions to Journals: Articles
A Reappraisal of the H-κ Stacking Technique: Implications for Global Crustal StructureGeophysical Journal International, vol. 219, no. 3, pp. 1491-1513Contributions to Journals: Articles
Seismological constraints on the density, thickness and temperature of the lithospheric mantle in southwestern TibetEarth and Planetary Science Letters, vol. 524, 115719Contributions to Journals: Articles
Lateral variations in the crustal structure of the Indo-Eurasian collision zoneGeophysical Journal International, vol. 214, no. 2, pp. 975-989Contributions to Journals: Articles
Precambrian Plate Tectonics in Northern Hudson Bay: Evidence From P and S Wave Seismic Tomography and Analysis of Source Side Effects in Relative Arrival‐Time Data SetsJournal of Geophysical Research: Solid Earth, vol. 123, no. 7, pp. 5690-5709Contributions to Journals: Articles
The formation of Laurentia: Evidence from shear wave splittingEarth and Planetary Science Letters, vol. 479, pp. 170-178Contributions to Journals: Articles