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<p>Active Multichannel Analysis of Surface Waves (A-MASW) is a non-destructive and cost-effective geophysical technique used in geotechnical site characterization. It can generate detailed 1D, 2D, and 3D shear wave velocity (Vs) models and can complement conventional geotechnical investigation by addressing spatial limitations and reducing interpolation risks. A-MASW has broad applications in geotechnical engineering, including subsurface characterization and the design and performance assessment of geotechnical structures. Despite its advantages, A-MASW is subject to various sources of uncertainty that can affect the reliability of results. These include near-field effects, inversion non-uniqueness, and sensitivity to site-specific survey configurations. Additionally, the lack of standardized procedures for data acquisition, processing, and interpretation contributes to inconsistencies. This review systematically examines the uncertainties associated with A-MASW, focusing on their sources, impacts, and strategies for mitigation. Drawing from existing literature, case studies, and industry experience, the paper evaluates current practices and provides practical recommendations for improving data quality and interpretation. The study offers a reference framework to improve reliability in A-MASW surveys and supports both researchers and practitioners in achieving more consistent and reliable geotechnical site characterization.</p>

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Managing Uncertainties in Active MASW: A Practical Guide for Geotechnical Engineers

  • 期刊论文

  • 发表日期：

    2025年8月23日

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  • Rachana Adhikari,
  • Renato Macciotta,
  • Alastair McClymont,
  • Joseph Farrugia,
  • Nathan Deisman,
  • Scott Hughes

摘要

Active Multichannel Analysis of Surface Waves (A-MASW) is a non-destructive and cost-effective geophysical technique used in geotechnical site characterization. It can generate detailed 1D, 2D, and 3D shear wave velocity (Vs) models and can complement conventional geotechnical investigation by addressing spatial limitations and reducing interpolation risks. A-MASW has broad applications in geotechnical engineering, including subsurface characterization and the design and performance assessment of geotechnical structures. Despite its advantages, A-MASW is subject to various sources of uncertainty that can affect the reliability of results. These include near-field effects, inversion non-uniqueness, and sensitivity to site-specific survey configurations. Additionally, the lack of standardized procedures for data acquisition, processing, and interpretation contributes to inconsistencies. This review systematically examines the uncertainties associated with A-MASW, focusing on their sources, impacts, and strategies for mitigation. Drawing from existing literature, case studies, and industry experience, the paper evaluates current practices and provides practical recommendations for improving data quality and interpretation. The study offers a reference framework to improve reliability in A-MASW surveys and supports both researchers and practitioners in achieving more consistent and reliable geotechnical site characterization.