Surface-to-space acoustic propagation model validation using chemical explosion sources: The DARPA AIRWaveS Project
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Nayak, Michael↗
Engineering topics
Egan, Sasha
Publications and source records attributed to Egan, Sasha.
Blue Canyon Dome: Development of a Small-Scale Testbed for Monitoring Underground Explosions
This report documents the development of the Blue Canyon Dome (BCD) testbed, including test site selection, development, instrumentation, and logistical considerations. The BCD testbed was designed for small-scale explosive tests (~5 kg TNT equivalence maximum) for the purpose of comparing diagnostic signals from different types of explosives, the assumption being that different chemical explosives would generate different signatures on geophysical and other monitoring tools. The BCD testbed is located at the Energetic Materials Research and Testing Center near Socorro, New Mexico. Instrumentation includes an electrical resistivity tomography array, geophones, distributed acoustic sensing, gas samplers, distributed temperature sensing, pressure transducers, and high-speed cameras. This SAND report is a reference for BCD testbed development that can be cited in future publications.
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEF↗
Systems, methods and tools for subterranean electrochemical characterization and enthalpy measurement in geothermal reservoirs
The present disclosure is directed to systems, methods and tools that measure ionic concentrations and downhole enthalpy of a flowing geothermal fluid in real-time at high-temperature and pressure. The systems, methods and tools include measuring the concentration of selected naturally occurring ions found in the liquid phase of the geothermal fluid throughout the wellbore using novel electrochemical sensor technologies. The change in liquid-phase ion concentration will be used to calculate the proportion of liquid to steam and allow for accurate enthalpy measurements. The techniques and technologies described here can be applied to any application of electrochemical sensing in extreme environments.
Cieslewski, Grzegorz↗