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Vibrational modes of hydraulic fractures: Inference of fracture geometry from resonant frequencies and attenuation

Vibrational modes of hydraulic fractures: Inference of fracture geometry from resonant frequencies and attenuation

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1002/2014JB011286. This is version 1 of this Preprint.

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Authors

Bradley Lipovsky, Eric M Dunham 

Abstract

Oscillatory seismic signals arising from resonant vibrations of hydraulic fractures are observed in many geologic systems, including volcanoes, glaciers and ice sheets, and hydrocarbon and geothermal reservoirs. To better quantify the physical dimensions of fluid‐filled cracks and properties of the fluids within them, we study wave motion along a thin hydraulic fracture waveguide. We present a linearized analysis, valid at wavelengths greater than the fracture aperture, that accounts for quasi‐static elastic deformation of the fracture walls, as well as fluid viscosity, inertia, and compressibility. In the long‐wavelength limit, anomalously d...  more

DOI

https://doi.org/10.31223/osf.io/s4qpv

Subjects

Earth Sciences, Environmental Sciences, Geophysics and Seismology, Glaciology, Physical Sciences and Mathematics, Volcanology

Keywords

Seismology, hydraulic fracture, crevasse, fracture resonance, glacier hydrology

Dates

Published: 2018-05-28 04:23

License

GNU Lesser General Public License (LGPL) 2.1