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Military Geophysics Mr. Gunnar J. Radel, PE 14 June 2011 This briefing is classified UNCLASSIFIED

Military Geophysics Mr. Gunnar J. Radel, PE 14 June 2011 This briefing is classified UNCLASSIFIED. UNLASSIFIED. Agenda. Applications Key geophysical sensing needs Key geophysical analytic needs Challenges Lessons learned. UNCLASSIFIED. UNLASSIFIED. Applications. Treaty monitoring

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Military Geophysics Mr. Gunnar J. Radel, PE 14 June 2011 This briefing is classified UNCLASSIFIED

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  1. Military Geophysics Mr. Gunnar J. Radel, PE 14 June 2011 This briefing is classified UNCLASSIFIED

  2. UNLASSIFIED Agenda • Applications • Key geophysical sensing needs • Key geophysical analytic needs • Challenges • Lessons learned UNCLASSIFIED

  3. UNLASSIFIED Applications • Treaty monitoring • Battlespace awareness • Land (and below), sea, air • Detect, locate, characterize • Clandestine tunnel detection • Broad, low resolution detection • Moderate resolution location • High fidelity local interrogation UNCLASSIFIED

  4. UNLASSIFIED Key Geophysical Sensing Needs • Sensing in a non-lab environment • DoD does not typically build vaults • Sensor networks • Common communications • Pre-processing on node prior to exfil • Size and power matter • Trade-offs (minimize reduction in sensitivity or bandwidth) • More robust and resilient sensors • No reduction in sensitivity • Example: sensitivity locked until sensor is in place • Stability • Sensors that do not require frequent or lengthy calibrations • No soaker hoses • Noise cancellation versus isolation • Advanced sensor concepts for noise reduction • Common GPS time for all UNCLASSIFIED

  5. UNLASSIFIED Key Geophysical Analysis Needs • Depth of seismic sources • Without placing sensor over the top of the source • Integrated infrasound and meteorological data • Rapid computation, interpretation of local & regional synthetics • Helps most with moving networks • Workflow optimized analytical environment • More tsunamigenic source function and propagation work • Cross-domain data fusion (no single geophysical method is applicable everywhere) • Seismic (active and passive) • Acoustic, Infrasound • Electromagnetic Induction • Resistivity • Ground penetrating radar • Global database of future sensor deployments • Direct download of .css data files • Versus seed format download and unpack Sirles, et. al: “Advancements In Subsurface Modeling Using Seismic Refraction Data”, SAGEEP 2006. UNCLASSIFIED

  6. UNLASSIFIED Geotechnical Challenges & Factors • Chaos • Material (clays, magnetite, salt) • Faults, fractures, joints, bedding, paleochannels • Groundwater level • Seismic velocity • Conductivity UNCLASSIFIED

  7. UNLASSIFIED Environmental Challenges & Factors • Vegetative cover • Terrain • Rain • Space available UNCLASSIFIED

  8. UNLASSIFIED Man-made Clutter Challenges & Factors • Urban chaos • Utilities • Underground • Power, Telephone, Cable • Water, Sewer, Gas • Stray current • Overhead - Power • Vehicles • Structures, Fences UNCLASSIFIED

  9. UNLASSIFIED Lessons Learned (Field Horror Stories) • Changing batteries • Pulling data cards • Equipment quantity and logistics • Planning • Weather • Animal life • Self interference & friendly fire UNCLASSIFIED

  10. UNLASSIFIED Questions? UNCLASSIFIED

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