Surface-to-Space Acoustic Propagation Model Validation Using Chemical Explosion Sources: The DARPA AtmoSense AIRWaveS Project
Description:
Surface explosions of sufficient size create acoustic waves capable of propagating hundreds to thousands of kilometers. These waves can be detected and characterized by ground and balloon borne microbarometers, pulsed Doppler radar soundings of the lower ionosphere and, in exceptional cases, ionospheric total electron content (TEC) derived from GNSS signals. While this capability has been demonstrated for higher yield explosions, the threshold of detectability for smaller events is still uncertain. This ambiguity motivates targeted field campaigns against events of known yield. The combination of well-understood sources with a sensing network of large horizontal and vertical aperture permits robust assessment of acoustic propagation models and constraint on the spatial distribution of wave fields. Here we describe an acoustic signal recording campaign planned for Spring 2024, leveraging multiple sensing modalities, aimed at a set of surface chemical explosions in central New Mexico as part of Phase II of the DARPA AtmoSense program. The observations will be compared to model simulations, supporting their validation extending from sources, to acoustic propagation, and ultimately to alternate remote sensing modalities including measurements of the lower ionosphere. The objective is to validate whole-atmosphere (surface-to-space) acoustic propagation modeling capabilities, including estimates of uncertainty and syntheses of multiple sensor observables. We also welcome other participants to the next active-source campaign, currently planned for Fall 2024, on a minimal interference basis. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.
Session: Advancements in Forensic Seismology and Explosion Monitoring - IV
Type: Oral
Date: 5/2/2024
Presentation Time: 04:30 PM (local time)
Presenting Author: Daniel
Student Presenter: No
Invited Presentation:
Authors
Michael Nayak michael.nayak@darpa.mil Defense Advanced Research Projects Agency |
Jonathan Snively snivelyj@erau.edu Embry-Riddle Aeronautical University |
Roberto Sabatini sabatinr@erau.edu Embry-Riddle Aeronautical University |
Daniel Bowman Presenting Author Corresponding Author dbowma@sandia.gov Sandia National Laboratories |
Sasha Egan sasha.egan@emrtc.nmt.edu Energetic Materials Research and Testing Center |
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Surface-to-Space Acoustic Propagation Model Validation Using Chemical Explosion Sources: The DARPA AtmoSense AIRWaveS Project
Category
Advancements in Forensic Seismology and Explosion Monitoring