The seismic signature of crustal fluids. Fluids are expected to profoundly modify the seismic properties of the cracked rocks of Earth's upper crust (to depths of about 15 km) but there are so far few relevant laboratory measurements. Through the development and application of novel experimental techniques we plan to build a better laboratory-based understanding of the seismic properties of fluid-saturated crustal rocks. The outcome will be an improved capacity to monitor the presence of fluid ....The seismic signature of crustal fluids. Fluids are expected to profoundly modify the seismic properties of the cracked rocks of Earth's upper crust (to depths of about 15 km) but there are so far few relevant laboratory measurements. Through the development and application of novel experimental techniques we plan to build a better laboratory-based understanding of the seismic properties of fluid-saturated crustal rocks. The outcome will be an improved capacity to monitor the presence of fluids in diverse situations ranging from geothermal power generation and waste disposal to earthquake fault zones. Read moreRead less
Multi-arrival wavefront tracking for improved seismic imaging of the Earth's interior. The complex nature of many seismic wavetrains can usually be attributed to the multi-pathing of elastic wave energy between source and receiver. Typical analysis, e.g., seismic tomography, uses few of these arrivals. This project is designed to improve the exploitation of the information on seismograms by tracking the various arrivals in complex media to provide better constraints on Earth structure. To achiev ....Multi-arrival wavefront tracking for improved seismic imaging of the Earth's interior. The complex nature of many seismic wavetrains can usually be attributed to the multi-pathing of elastic wave energy between source and receiver. Typical analysis, e.g., seismic tomography, uses few of these arrivals. This project is designed to improve the exploitation of the information on seismograms by tracking the various arrivals in complex media to provide better constraints on Earth structure. To achieve this goal, new methods for constructing multi-arrival wavefronts will be developed and applied to a range of seismic data from Tasmania to produce high resolution images of the crust and upper mantle.
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