Tectonic earthquake swarms in the Northern Volcanic Zone, Iceland ...

• Main Author: Winder, Thomas
• Format: Thesis
• Language: English
• Published: Apollo - University of Cambridge Repository 2021
• Subjects: Volcano seismology; Seismology; Geophysics; FOS Earth and related environmental sciences; Iceland; Volcanology; Geology; Microseismicity
• Online Access: https://dx.doi.org/10.17863/cam.82505; https://www.repository.cam.ac.uk/handle/1810/335065

Microseismicity offers an opportunity to image subsurface deformation at exceptionally high spatial and temporal resolution. This may be related to a diverse range of processes, including fore- and aftershocks to destructive earthquakes on large faults, magma movement at volcanoes, or the gradual advance of glaciers. Microearthquakes at faults might also signal more exotic behaviour, including due to transient events such as fluid injections or pulses of aseismic fault creep. The study of small earthquakes has advanced significantly over the past decades, as seismology has entered the digital age. Denser networks, with larger numbers of more sensitive seismometers allow ever smaller seismic events to be detected and analysed. The study of larger numbers of earthquakes brings a raft of benefits, including more robust statistical analyses, higher temporal resolution, and the opportunity to achieve significantly greater spatial resolution by harnessing the power of relative relocation algorithms. However, the ...