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المؤلفGritto, Roland
المؤلفElnaiem, Ali Elobaid
المؤلفMohamed, Fateh Alrahman
المؤلفSadooni, Fadhil
تاريخ الإتاحة2023-09-10T07:16:24Z
تاريخ النشر2021-03-19
اسم المنشورGeophysics
المعرّفhttp://dx.doi.org/10.1190/geo2020-0377.1
الاقتباسGritto, R., Elnaiem, A. E., Mohamed, F. A., & Sadooni, F. (2021). Seismic detection and characterization of a man-made karst analog—A feasibility study. Geophysics, 86(3), WA35-WA48.‏
الرقم المعياري الدولي للكتاب00168033
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85119457631&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/47338
الملخصAt the site of a water drainage shaft on the campus of Qatar University that serves as a man-made karst analog, two seismic imaging techniques were adapted to use resonant scattered waves recorded during active-source seismic surveys and during passive ambient-noise surveys. Data acquisition included two seismic transmission surveys that encompassed the shaft and a passive ambient-noise survey that extended across the top of the shaft. Seismic imaging of band-pass-filtered resonance waves correctly estimated the location and dimension of the shaft. Furthermore, the method detected the presence and the location of a horizontal drainage pipe and gravel bed connecting neighboring water shafts. Ambient-noise data were analyzed by computing amplitude values of the seismic records in spectral passbands. The results indicated an amplification of seismic amplitudes above the shaft for low-frequency passbands and a sharp decrease in amplitude values for high-frequency passbands. The high- and low-amplitude values displayed as a function of the receiver position allowed for accurate detection and location of the shaft in space. Ground truthing of the imaging results confirmed the accuracy of the seismic techniques, whereas numerical modeling supported the interpretation of the ambient-noise data. The techniques used do not require knowledge of the seismic velocities in the subsurface, but they depend on a priori information about the approximate location of the target.
راعي المشروعThe authors would like to thank the associate editor, two anonymous reviewers, and the editor-in-chief for the constructive comments and suggestions that improved the content of the manuscript. We would also like to thank D. Dreger and A. Nayak for fruitful discussions during the preparation of the manuscript. We are indebted to V. Korneev, who contributed to the project but passed away before its conclusion. This work was supported by grant no. NPRP 04-137-04-25 from the Qatar National Research Fund, a member of Qatar Foundation.
اللغةen
الناشرSociety of Exploration Geophysicists
الموضوعscattering
spectral analysis
العنوانSeismic detection and characterization of a man-made karst analog - A feasibility study
النوعArticle
رقم العدد3
رقم المجلد86
dc.accessType Abstract Only


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