Dispersion analysis of surface waves on passive data from distributed acoustic sensors and geophones
https://doi.org/10.18303/2619-1563-2026-1-98
Abstract
A comparative dispersion analysis using the passive MASW method was conducted for data from distributed acoustic sensors (DAS) and three-component geophones during surface wave recording with a controlled noise source (vehicle). The impact of DAS parameters and array length on the frequency content was revealed. DAS spectral images show systematically overestimated phase velocities compared to geophones while preserving the fundamental mode structure, confirming applicability for monitoring near-surface velocity changes.
Supporting agencies: the study was carried out within the framework of the project No. FWZZ-2026-0052
About the Authors
A. V. Yablokov
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS; Novosibirsk State University
Russian Federation
Russian Federation
Alexandr V. Yablokov
Koptyug Ave., 3, Novosibirsk, 630090
Pirogov Str., 1, Novosibirsk, 630090
P. A. Dergach
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS; Novosibirsk State University
Russian Federation
Russian Federation
Petr A. Dergach
Koptyug Ave., 3, Novosibirsk, 630090
Pirogov Str., 1, Novosibirsk, 630090
E. A. Fomiryakov
T8 LLC
Russian Federation
Russian Federation
Edgard A. Fomiryakov
Krasnobogatyrskaya Str., 44, bld. 1, Moscow, 107076
I. S. Ponomarev
T8 LLC; M.V. Lomonosov Moscow State University
Russian Federation
Russian Federation
Ivan S. Ponomarev
Krasnobogatyrskaya Str., 44, bld. 1, Moscow, 107076
Leninskie Gory, 1, Moscow, 119991
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Review
For citations:
Yablokov A.V., Dergach P.A., Fomiryakov E.A., Ponomarev I.S. Dispersion analysis of surface waves on passive data from distributed acoustic sensors and geophones. Russian Journal of Geophysical Technologies. 2026;(1):98-107. (In Russ.) https://doi.org/10.18303/2619-1563-2026-1-98
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