Gas hydrates are found in significant quantities on the North Slope of Alaska in
subpermafrost sand units and intermixed in lower portions of permafrost within the hydrate …

Elastic time-reverse imaging offers a robust wavefield-based approach for locating
microseismic events; however, event location accuracy greatly depends on the veracity of …

Full-wavefield elastic imaging of active-source seismic data acquired by downhole receivers
commonly offers higher-resolution subsurface images in the vicinity of a borehole compared …

Wavefield migration and tomography are considered to be state-of-the-art methodologies
used for subsurface geological characterization. Seismic tomography produces accurate …

Distributed acoustic sensing (DAS) has emerged as an important technology for seismic
investigations for downhole vertical seismic profile (VSP) surveying. DAS fiber has high …

Generating accurate and timely location estimates of microseismic events plays a crucial
role in the success of seismic monitoring programs. Elastic time-reverse imaging offers a …