Ground Ice Detection With Spectral Induced Polarization by Hosein Fereydooni скачать в хорошем качестве

Ground Ice Detection With Spectral Induced Polarization by Hosein Fereydooni

NSERC PermafrostNet seminar - Ground Ice Detection With Spectral Induced Polarization by Hosein Fereydooni (Carleton University). The melting of ground ice poses significant hazards in permafrost regions, leading to ground instability, infrastructure damage, and environmental changes. Detecting ground ice effectively is crucial for mitigating these risks, yet conventional geophysical methods—such as electrical resistivity, seismic surveys, and ground-penetrating radar—often produce ambiguous results due to the overlapping properties of frozen and unfrozen ground. This presentation explores the potential of Spectral Induced Polarization (SIP) as a more precise method for identifying ground ice. It discusses the theoretical foundations and mathematical principles of SIP, followed by an examination of various polarization mechanisms, with a focus on those specific to frozen environments, and an explanation of relaxation time. The study will then present field measurement results from a permafrost site in Yukon, demonstrating SIP’s ability to detect and distinguish ground ice in real-world conditions.