UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

The propagation and seismicity of dyke injection, new experimental evidence

Bakker, RR; Fazio, M; Benson, PM; Hess, K-U; Dingwell, DB; (2016) The propagation and seismicity of dyke injection, new experimental evidence. Geophysical Research Letters , 43 (5) pp. 1876-1883. 10.1002/2015GL066852. Green open access

[thumbnail of Bakker_et_al-2016-Geophysical_Research_Letters.pdf]
Preview
Text
Bakker_et_al-2016-Geophysical_Research_Letters.pdf - Published version

Download (1MB) | Preview

Abstract

To reach the surface, dykes must overcome the inherent tensile strength of the country rock. As they do, they generate swarms of seismic signals, frequently used for forecasting. In this study we pressurize and inject molten acrylic into an encapsulating host rocks of (1) Etna basalt and (2) Comiso limestone, at 30 MPa of confining pressure. Fracture was achieved at 12 MPa for Etna basalt and 7.2 MPa for Comiso limestone. The generation of radial fractures was accompanied by acoustic emissions (AE) at a dominant frequency of 600 kHz. During “magma” movement in the dykes, AE events of approximately 150 kHz dominant frequency were recorded. We interpret our data using AE location and dominant frequency analysis, concluding that the seismicity associated with magma transport in dykes peaks during initial dyke creation but remains significant as long as magma movement continues. These results have important implications for seismic monitoring of active volcanoes.

Type: Article
Title: The propagation and seismicity of dyke injection, new experimental evidence
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/2015GL066852
Publisher version: https://doi.org/10.1002/2015GL066852
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/10098154
Downloads since deposit
17Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item