Contact Information
2284 NW Thurman St.
Portland, Oregon, 97210
Voice: (503) 227-7659
Fax: (503) 227-1074

Geophysics - Vibration & Noise - Rock Mechanics

Providing Quality Geophysical Consulting Services since 1984

Geophysical Applications

Earth Dynamics specializes in Environmental and Engineering Geophysics, Vibration and Acoustic Analysis, and Rock Mechanics. Our services include a wide range of applications as listed below:

Engineering Geophysics:

  • Locating voids and caverns
  • Locating underground utilities and pipes
  • Examining condition of brick, masonry and concrete structures
  • Examining condition of sub-grades beneath roads, railroad tracks, and runwaysGravel Quarry
  • Locating rebar and cables in concrete
  • Mapping Bedrock topography
  • Locating seepage through dams
  • Determining stratigraphy
  • Groundwater exploration
  • Mineral resource exploration
  • Sand, gravel, and hard rock resource exploration
  • Locating buried magnetic objects
  • Determining compressional and shear wave velocity versus depth for seismic response analysis
  • Detecting shallow faults and fracture zones
  • Detecting large boulders
  • Estimating rippability
  • Monitoring time-varying changes in elastic properties
  • Determining liquefaction potential
  • Determining soil compaction
  • Determining subsurface geology
  • Planning grounding grids
  • Determining basin geometry
  • Evaluation of drilled shafts
Buried Drum Excavation Environmental Geophysics:
  • Mapping contaminant plumes
  • Locating archaeological sites
  • Determining depth to the water table
  • Locating leakage from landfills
  • Delineating perched water tables
  • Unexploded Ordinance (UXO) detection
  • Underground Storage Tank (UST) detection
  • Locating buried landfills and trenches
  • Determining extent of leachate plumes
  • Locating underground streams
  • Forensic investigations
Vibration and Noise Monitoring:
  • Environmental Impact Studies
  • Vibration Monitoring and analysis
  • Acoustic Monitoring and analysis
  • Mechanical Equipment Evaluation
  • Preventative Maintenance Programs
  • Vibration and Acoustic Isolation Design
  • Blast Design
  • Pre-Construction and Pre-Blast Surveys
  • Damage Probability Analysis
Truck Noise Analysis
Uniaxial Compression Test Rock Mechanics:
  • Uniaxial Compressive Strength
  • Direct and Triaxial Shear Strength
  • Direct and Indirect Tensile Strength
  • Dynamic & Static Elastic Moduli
  • Thermal Expansion, Conductivity and Diffusivity
  • Bulk and Grain Density
  • Moisture Content
  • Porosity