Project White Papers & Case Studies
Seismic Refraction Tomography and Multichannel Analysis of Surface Waves
This case study demonstrates the integration of Seismic Refraction Tomography (SRT) and Multichannel Analysis of Surface Waves (MASW) for subsurface site characterization at APT. Pranoto Airport, Samarinda. By combining P-wave velocity (Vp) profiles and Rayleigh wave dispersion analyses to derive S-wave velocity (Vs), the combined approach accurately evaluates dynamic rock elastic parameters—including Poisson’s ratio, Shear modulus, and Young’s modulus—for critical foundational engineering. The non-invasive geophysical workflow provides continuous 2D cross-sections that mitigate geotechnical uncertainty in variable basin strata.
Electrical Resistivity Tomography and Induced Polarizatio
This white paper details a combined geophysical-geotechnical framework that pairs 2D/3D Electrical Resistivity Tomography (ERT) with targeted borehole drilling, SPT testing, and laboratory soil characterization to investigate slope stability along road infrastructure. By correlating resistivity contrasts with physical soil mechanical properties and hydrogeological conditions, the approach accurately maps potential rupture surfaces, saturated zones, and subsurface lithology.
Ground Penetrating Radar
Non-destructive evaluation of near-surface conditions is essential for preserving historical sites and ensuring infrastructure safety. This technical paper highlights advanced GPR field procedures and data processing techniques designed to deliver continuous 2D and 3D subsurface imaging. Through comparative case studies spanning cultural heritage conservation and geotechnical engineering, the paper illustrates how high-resolution GPR surveys reduce spatial uncertainty, detect sub-surface anomalies, and lower risk in civil developments.
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