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High-resolution Reflection Imaging for the Planning of a Double Train-track Tunnel in the City of Varberg, Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics. (Applied Geophysics)
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
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2016 (English)Conference paper, Abstract (Refereed)
Abstract [en]

A newly developed broadband MEMs-based seismic landstreamer system was employed for the planning of a double train-track tunnel in the city of Varberg, southwest Sweden. In addition to the refraction analysis and velocity tomographic modeling, reflection processing of the data was considered given the good quality of the data and realization of reflections in some raw shot gathers. Bedrock is strongly reflective in most cases and only at occasions when reaches near the surface it disappears in the reflection section. Bedrock undulation is clearly noticeable in most reflection sections and at one occasion it appears to be strongly diffractive. The diffraction signature is now known to be associated with a buried water tank used in fire emergency situations. Reflection seismic data greatly complements tomographic models and may support a deep bedrock at where the tunnel is planned to be excavated in the downtown Varberg.  

Place, publisher, year, edition, pages
Barcelona-Spain, 2016.
National Category
Geophysics
Identifiers
URN: urn:nbn:se:uu:diva-303370DOI: 10.3997/2214-4609.201601906OAI: oai:DiVA.org:uu-303370DiVA: diva2:971663
Conference
Near Surface Geoscience 2016 - 22nd European Meeting of Environmental and Engineering Geophysics
Funder
Swedish Research Council Formas
Available from: 2016-09-18 Created: 2016-09-18 Last updated: 2016-09-19Bibliographically approved

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Dehghannejad, MahdiehMalehmir, AlirezaLundberg, Emil
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