Distributed Acoustic Sensing (DAS) measurements made on the horizontally emplaced PoroTomo fiber-optic at Brady during an M 2.3 explosion at the Nevada Test Site
This work tests the ability of DAS to resolve P wave arrivals from an M 2.3 explosion conducted on the Nevada Test Site approximately 400 km away. The measurement fiber was part of the PoroTomo (Miller et al., 2018) experiment and is horizontally emplaced in alluvial fan gravels at a depth of approximately one meter for a distance of more than 2.5 km in a zig-zag pattern. A Silixa iDAS interrogator acquired data on single-mode fibers for approximately two hours prior to detonation on December 19, 2018 at 18:45:57 (UTC). Measurements continued for approximately fifteen minutes after detonation. iDAS channel spacing is 1.021 m and gauge length is 10 m. Concurrent Distributed Temperature Sensing (DTS) measurements made with a Silixa XT on the mulit-mode fibers aided in calibrating the DAS measurements. Data for the entire 2-plus hour recording period are presented here in SEG-Y format, with individual files representing a thirty-second recording interval.
DOE Project Number: EE0006760
DOE Project Lead: Elisabet Metcalfe