Print Email Facebook Twitter Characterization of a heterogeneous landfill using seismic and electrical resistivity data Title Characterization of a heterogeneous landfill using seismic and electrical resistivity data Author Konstantaki, L.A. Ghose, R. Draganov, D.S. Diaferia, G. Heimovaara, T.J. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2014-12-22 Abstract Understanding the processes occurring inside a landfill is important for improving the treatment of landfills. Irrigation and recirculation of leachate are widely used in landfill treatments. Increasing the efficiency of such treatments requires a detailed understanding of the flow inside the landfill. The flow depends largely on the heterogeneous distribution of density. It is, therefore, of great practical interest to determine the density distribution affecting the flow paths inside a landfill. Studies in the past have characterized landfill sites but have not led to high-resolution, detailed quantitative results. We performed an S-wave reflection survey, multichannel analysis of surface waves (MASW), and electrical resistivity survey to investigate the possibility of delineating the heterogeneity distribution in the body of a landfill. We found that the high-resolution S-wave reflection method offers the desired resolution. However, in the case of a very heterogeneous landfill and a high noise level, the processing of high-resolution, shallow reflection data required special care. In comparison, MASW gave the general trend of the changes inside the landfill, whereas the electrical resistivity (ER) survey provides useful clues for interpretation of seismic reflection data. We found that it is possible to localize fine-scale heterogeneities in the landfill using the S-wave reflection method using a high-frequency vibratory source. Using empirical relations specific to landfill sites, we then estimated the density distribution inside the landfill, along with the associated uncertainty considering different methods. The final interpretation was guided by supplementary information provided by MASW and ER tomography. Subject near surfaceshear wave (S-wave)processingscatteringenvironmental To reference this document use: http://resolver.tudelft.nl/uuid:acf1a97b-5bc1-40f6-8318-3658744659a8 Publisher Society of Exploration Geophysicists ISSN 0016-8033 Source https://doi.org/10.1190/geo2014-0263.1 Source Geophysics, 80 (1), 2015 Part of collection Institutional Repository Document type journal article Rights © 2014 Society of Exploration Geophysicists Files PDF 312454.pdf 7.19 MB Close viewer /islandora/object/uuid:acf1a97b-5bc1-40f6-8318-3658744659a8/datastream/OBJ/view