none 10.1190/geo2023-0643.1 Society of Exploration Geophysicists Society of Exploration Geophysicists 186 161150427 5981 2025121212544414800 10.1190 2025-12-12T17:54:52Z 2024-05-29T11:09:08Z 1 Geophysics 0016-8033 1942-2156 01 09 2024 89 5 Ivan J. Sánchez-Galvis Universidad Industrial de Santander 1 , School of Electrical, Electronics and Telecommunications Engineering, Bucaramanga, Colombia. ivanjavier240@gmail.com (corresponding author) http://orcid.org/0000-0001-9972-9827 William Agudelo Ecopetrol S.A. 2 , Piedecuesta, Colombia. william.agudelo@ecopetrol.com.co http://orcid.org/0000-0003-4086-878X Daniel O. Trad University of Calgary 3 , Consortium for Research in Elastic Wave Exploration Seismology (CREWES), Calgary, Canada. daniel.trad@ucalgary.ca http://orcid.org/0000-0002-9726-789X Daniel Sierra Universidad Industrial de Santander 1 , School of Electrical, Electronics and Telecommunications Engineering, Bucaramanga, Colombia. dasierra@uis.edu.co http://orcid.org/0000-0002-9566-5974 ABSTRACT Polarization filters have emerged as a useful tool for coherent noise denoising in multicomponent seismic data. By exploiting the polarization properties of seismic waves, these filters can significantly improve wave-type separation, which is a crucial step in seismic data processing. However, their effectiveness in land seismic data in complex areas can be impacted by the presence of scattering noise, and their applicability is limited by irregular spatial sampling, which hinders velocity information for wave-type discrimination. To address these limitations, we introduce a novel two-step method for distinguishing and separating polarized wave types in shot gathers captured from a spatially undersampled linear array of 3C vector sensors. The first step involves conducting a polarization analysis in the frequency-slowness domain using elliptical elements derived from the linear Radon transform of the seismic data. The second step isolates specific polarized waves using the 3C frequency-slowness polarization filter (3C-FSPF), a technique that uses tailored taper functions based on polarization analysis. Our method stands out from single-station filters that cannot use velocity information for wave-type discrimination and existing multistation filters that require regularly sampled data. To evaluate our method, comprehensive tests are conducted on synthetic and real data. The results consistently demonstrate the effectiveness of 3C-FSPF in separating diverse polarized wave types under conditions of irregular and sparse spatial sampling and noise. Our findings underscore the potential of this method for advancing exploration geophysics by enhancing the quality of seismic data, particularly in land regions with complex near-surface structures. 07 25 2024 01 09 2024 V395 V413 Act No 27 of the “Convenio de Cooperacion Technologica” 5222395 1 10.1190/crossmark-policy library.seg.org true 2023-11-07 2024-04-15 2024-04-19 2024-07-25 Act No 27 of the “Convenio de Cooperacion Technologica” 5222395 10.1190/geo2023-0643.1 https://pubs.geoscienceworld.org/geophysics/article/89/5/V395/645936/Polarization-analysis-and-filtering-of https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/89/5/V395/6946757/geo-2023-0643.1.pdf https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/89/5/V395/6946757/geo-2023-0643.1.pdf https://pubs.geoscienceworld.org/geophysics/article/89/5/v395/645936/polarization-analysis-and-filtering-of Geophysical Supplements to the Monthly Notices of the Royal Astronomical Society Aharchaou 207 811 2016 10.1093/gji/ggw307 A compressive sensing approach to the high-resolution linear Radon transform: Application on teleseismic wavefields Journal of King Saud University-Computer and Information Sciences Al-Hasanat 29 39 2017 10.1016/j.jksuci.2016.01.006 Blind separation of multicomponent seismic wavefield using SVD of reduced dimension spectral matrix 0016-8033 Geophysics Cao 83 6 T313 2018 10.1190/geo2018-0098.1 A parameter-modified method for implementing surface topography in elastic-wave finite-difference modeling 0956-540X Geophysical Journal International Christoffersson 93 197 1988 10.1111/j.1365-246X.1988.tb01996.x Wavefield decomposition using ML-probabilities in modelling single-site 3-component records 0016-8033 Geophysics De Franco 66 932 2001 10.1190/1.1444983 Polarization filter with singular value decomposition 10.1190/1.3059107 De Meersman K. , 2008, Ground roll polarization filtering with spatial smoothness constraints: 78th Annual International Meeting, SEG, Expanded Abstracts, 1053–1057, doi: http://dx.doi.org/10.1190/1.3059107. 10.3997/2214-4609-pdb.1.B019 De Meersman K. 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