Underground Facility Analysis Center Military Geophysics Mr Gunnar

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

UNLASSIFIED Underground Facility Analysis Center Agenda § § § UNCLASSIFIED Applications Key geophysical sensing needs Key geophysical analytic needs Challenges Lessons learned 2

UNLASSIFIED Applications Underground Facility Analysis Center § 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 3

UNLASSIFIED Underground Facility Analysis Center Key Geophysical Sensing Needs § Sensing in a non-lab environment § Do. D 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

UNLASSIFIED Underground Facility Analysis Center 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 § § Global database of future sensor deployments Direct download of. css data files everywhere) § Seismic (active and passive) § Acoustic, Infrasound § Electromagnetic Induction § Resistivity § Ground penetrating radar § UNCLASSIFIED Versus seed format download and unpack Sirles, et. al: “Advancements In Subsurface Modeling Using Seismic Refraction Data”, SAGEEP 2006.

UNLASSIFIED Underground Facility Analysis Center Geotechnical Challenges & Factors § § § Chaos Material (clays, magnetite, salt) Faults, fractures, joints, bedding, paleochannels Groundwater level Seismic velocity Conductivity UNCLASSIFIED

UNLASSIFIED Underground Facility Analysis Center Environmental Challenges & Factors § § UNCLASSIFIED Vegetative cover Terrain Rain Space available

UNLASSIFIED Underground Facility Analysis Center Man-made Clutter Challenges & Factors § Urban chaos § Utilities § Underground § Power, Telephone, Cable § Water, Sewer, Gas § Stray current § Overhead - Power § Vehicles § Structures, Fences UNCLASSIFIED

UNLASSIFIED Lessons Learned (Field Horror Stories) § § § § UNCLASSIFIED Changing batteries Pulling data cards Equipment quantity and logistics Planning Weather Animal life Self interference & friendly fire Underground Facility Analysis Center

UNLASSIFIED Underground Facility Analysis Center Questions? UNCLASSIFIED