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Hassing, S.H.W. (author), Draganov, D.S. (author), Barnhoorn, A. (author), Janssen, M. (author)
In July 2021, passive seismic data has been recorded on a network of geophones at the CarbFix2 injection site at Hellisheiði, Iceland. This data is processed using seismic interferometry to get an image of the injection reservoir. The data is split up into noise panels. Panels dominated by body-wave energy are selected using an illumination...
conference paper 2022
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Hupe, T. (author), Orlowsky, D. (author), Draganov, D.S. (author)
To test passive seismic interferometry (PSI) in underground mining environments, we carried out an active-source seismic and continuous noise measurement in a mine gallery of a former radioactive waste repository - the Asse II salt mine (Lower Saxony, Germany). To analyze the active-source data, we process the data inspired by conventional...
conference paper 2022
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Draganov, D.S. (author), Ma, X. (author), Heller, H.K.J. (author), Kirichek, Alex (author)
Knowledge about the characteristics of fluid mud in ports and waterways would allow safer navigating through fluid mud. The properties of the fluid mud determine the feasibility of navigating vessels through the fluid mud. Seismic waves have the potential to help characterize the fluid-mud layers, especially when both P- and S-waves are used....
conference paper 2022
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Chamarczuk, M. (author), Draganov, D.S. (author), Malinowski, M. (author), Koivisto, E. (author), Heinonen, S. (author), Rötsä, S. (author)
We apply a full-scale 3D seismic virtual-source survey (VSS) for the purpose of near-mine mineral exploration in the Kylylahti sulfide deposit, Finland. Based on the ambient-noise (AN) characterization including beamforming results, we created a 10-days subset of AN recordings that were dominated by multi-azimuth high-velocity arrivals. We...
conference paper 2022
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Buisman, M. (author), Martuganova, E.M. (author), Kirichek, Alex (author), Draganov, D.S. (author)
This work shows the potential of using DAS for continuous water-depth monitoring by using the difference in acoustic energy in water and mud. The advantage over conventional methods is that our method can be used continuously and remotely, given that there is traffic nearby. Due to the low cost of fibres and the far-reaching dynamic range of...
conference paper 2022
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Chamarczuk, M. (author), Malinowski, M. (author), Draganov, D.S. (author), Koivisto, E. (author), Heinonen, S. (author), Juurela, S. (author)
We present the results of adapting seismic interferometry (SI) for reflection imaging in mineral exploration. We use a unique dataset of one-month ambient-noise recordings acquired with large-N array (~1000 receivers) deployed in a regular grid (50 m receiver interval, 200 m line interval) directly above the known mineralisation and underground...
conference paper 2018
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Kaslilar, A. (author), Harmankaya, U. (author), Wapenaar, C.P.A. (author), Draganov, D.S. (author)
Inspired by a technique called seismic interferometry, we estimate the location of a scatterer using scattered waves. We isolate the scattered wavefield and evaluate the result of correlating scattered waves at different receiver locations. The cross-correlation eliminates the travel path between a source and a scatterer, making the estimation...
conference paper 2015
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Liu, Y. (author), Draganov, D.S. (author), Wapenaar, C.P.A. (author), Arntsen, B. (author)
In the field of seismic interferometry using noise, surface waves and body waves between receivers have been retrieved by crosscorrelating recordings of uncorrelated noise sources to extract useful subsurface information. When the positions of the noise sources are known, inter-source interferometry can be applied to retrieve the wavefileds...
conference paper 2015
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Boullenger, B. (author), Verdel, A. (author), Paap, B. (author), Draganov, D.S. (author)
Ambient-noise seismic interferometry (ANSI) applied to passive body-wave measurements retrieves an estimate of the reflection response as if from a source at a receiver position. Often, the limited compliance with theoretical assumptions causes erroneous absolute amplitudes of the retrieved physical reflections, and additional artefacts....
conference paper 2015
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Konstantaki, L.A. (author), Draganov, D.S. (author), Ghose, R. (author), Heimovaara, T.J. (author)
In this study we investigate the application of seismic interferometry (SI) to seismic reflection data recorded over a landfill. Landfills represent strongly heterogeneous subsurfaces making the seismic reflection imaging challenging. We show that SI improves the imaging of high-density areas, which create scattering events in the recorded data....
conference paper 2015
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Harmankaya, U. (author), Kaslilar, A. (author), Van Wijk, K. (author), Wapenaar, C.P.A. (author), Draganov, D.S. (author)
Inspired by a technique called seismic interferometry, we estimate the location of scatterers in a scaled model, where many near-surface scatterers are present. We isolate the scattered wavefield and evaluate correlation of scattered waves at different receiver locations. The cross-correlation eliminates the travel path between a source and a...
conference paper 2015
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Boullenger, B. (author), Hunziker, J.W. (author), Draganov, D.S. (author)
Seismic interferometry (SI) allows retrieval of virtual-source responses at positions of receivers, where no actual source is shot, by cross-correlating (CC) the seismic responses between receivers. The theory requires a boundary of subsurface sources to retrieve the surface reflection response. With reflection data acquired with both sources...
conference paper 2015
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Nishitsuji, Y. (author), Ruigrok, E. (author), Gomez, M. (author), Draganov, D.S. (author)
We investigated the applicability of global phases (epicentral distances of ? 120° and ? 150°) for the H/V spectral ratio to identify the fundamental resonance frequency. We applied the method to delineate a part of Neuquén basin in Argentina without the need for active seismic sources. We obtained fairly identifiable fundamental resonance...
conference paper 2015
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Konstantaki, L.A. (author), Ghose, R. (author), Draganov, D.S. (author), Diaferia, G. (author), Heimovaara, T.J. (author)
The ability to image and quantify the heterogeneity in municipal landfills is crucial for improving the landfill treatment methods, for predicting the behaviour of processes that take place inside the landfills and hence, for estimating the after-care period. Our aim is to image the flow paths inside landfills and to quantify the heterogeneity....
conference paper 2014
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Harmankaya, U. (author), Kaslilar, A. (author), Verstraeten, B. (author), Creten, S. (author), Glorieux, C. (author), Wapenaar, C.P.A. (author), Draganov, D.S. (author)
The investigation and detection of near-surface structures (cavities, caves, tunnels, mineshafts, buried objects, archeological ruins, water reservoir, etc.) is important to mitigate geo- and environmental hazards. We use a method inspired by seismic interferometry to estimate the location of a cavity in a scaled ultrasonic experiment,...
conference paper 2014
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Boullenger, B. (author), Draganov, D.S. (author)
conference paper 2014
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Konstantaki, L.A. (author), Draganov, D.S. (author), Heimovaara, T.J. (author), Ghose, R. (author)
Understanding how sensitive the seismic method is to errors that can occur during a seismic survey or during the processing of the seismic data is of high importance for any exploration geophysical project. Our aim is to image the subsurface of a landfill, which is typically a heterogeneous system due to the presence of numerous scatterers....
conference paper 2013
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Draganov, D.S. (author), Heller, H.K.J. (author), Ghose, R. (author)
Time-lapse seismic monitoring is a fundamental part in most monitoring programmes involving CO2 storage. Even though the seismic method has proven its applicability for monitoring, there are two major causes of uncertainty in the estimation of changes in the reservoir properties: non-repeatability of the source positions and the difficulty in...
conference paper 2013
document
Harmankaya, U. (author), Kaslilar, A. (author), Thorbecke, J.W. (author), Wapenaar, C.P.A. (author), Draganov, D.S. (author)
The investigation and detection of near-surface structures (such as cavities, caves, sinkholes, tunnels, mineshafts, buried objects, archeological ruins, water reservoir, etc.) is important to mitigate geo- and environmental hazards. In a former study, we suggested a method based on active-source seismic interferometry for locating the...
conference paper 2013
document
Boullenger, B. (author), Verdel, A. (author), Thorbecke, J.W. (author), Draganov, D.S. (author)
conference paper 2013
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