Fiber Seismic Tomography for Geothermal Exploration High-resolution delineation of subsurface anomalies associated with geothermal reservoirs is a costly and significant geophysical and geological effort We present a novel seismic tomographic approach that employs machine-learning traveltime picks obtained on distributed acoustic sensing (DAS) data recorded on existing telecommunication fibers
Double-difference seismic attenuation tomography method and its . . . In this paper, we develop a double-difference (DD) attenuation (DDQ) tomography method Our DDQ tomography method includes two main parts: (1) extracting d t ∗ data using a new event-pair spectral ratio method, and (2) performing 3-D Q tomography with the obtained d t ∗ data
Imaging high-temperature geothermal reservoirs with ambient seismic . . . Here, we investigate the potential for ambient seismic noise tomography to be used as a geothermal exploration tool The results are compared with different geophysical observables, of which resistivity modeling shows an excellent correlation with our results
Seismic Tomography: a cat scan of the Earth One of the ways we are imaging the Earth’s crust to look for supercritical geothermal resources is through the use of seismic tomography How does this work? Before we explain seismic tomography, first imagine a CT (computerised tomography) scan of the human body A CT scan uses X-rays
From a natural disaster to a geothermal opportunity: The Lusi . . . Our study highlights that Lusi’s plumbing system features two distinct fluid flow regimes, one across the shallow sedimentary units and one developing sub-vertically across the deeper domains of the basin
Geothermal Reservoir Characterization and Monitoring through Seismic . . . Seismic imaging using passive seismic techniques allows for subsurface characterization via Ambient Noise Tomography, and supports the assessment of geothermal resources without requiring the use of shooting, which reduces the cost compared to active seismics
Introduction to this special section: Geophysical applications to . . . This shows that FWI should be considered as a potential option to supplement the conventional traveltime tomography analyses routinely used to derive seismic velocity models for microseismic monitoring of geothermal developments
Computed Tomography Scanning and Geophysical Measurements of the . . . Qualitative analysis of the medical CT images, coupled with X-ray fluorescence (XRF), P-wave, and magnetic susceptibility measurements from the MSCL were useful in identifying zones of interest for more detailed analysis as well as fractured zones
Double-difference seismic attenuation tomography method and its . . . We have developed a double-difference seismic attenuation (DDQ) tomography method for high-resolution imaging of 3-D attenuation structure Our method includes two main elements, the inversion of event-pair differential t∗ (dt∗) data and 3-D attenuation tomography with the dt∗ data