Searched for: author:"Verdel, A."
(1 - 10 of 10)
document
Weemstra, C. (author), de Laat, J.I. (author), Verdel, A. (author), Smets, P. (author)
Instrumental timing and phase errors are a notorious problem in seismic data acquisition and processing. These can be frequency independent, for example due to clock drift, but may also be frequency dependent, for example due to imperfectly known instrument responses. A technique is presented that allows both types of errors to be recovered in a...
article 2021
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van IJsseldijk, J.E. (author), Ruigrok, E. (author), Verdel, A. (author), Weemstra, C. (author)
Global phases, viz. seismic phases that travel through the Earth’s core, can be used to locally image the crust by means of seismic interferometry. This method is known as Global Phase Seismic Interferometry (GloPSI). Traditionally, GloPSI retrieves low-frequency information (up to 1 Hz). Recent studies, however, suggest that there is high...
article 2019
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Sánchez-Pastor, P. (author), Obermann, A. (author), Schimmel, M. (author), Weemstra, C. (author), Verdel, A. (author), Jousset, P. (author)
The Reykjanes Geothermal System (RGS) is a high‐temperature geothermal system located on the Reykjanes peninsula, a transtensional plate‐boundary zone located on the southwestern tip of Iceland. The area is characterized by high seismicity, recent volcanism, and high‐temperature geothermal fields. We use seismic noise records from April 2014 to...
article 2019
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Martins, J.E. (author), Weemstra, C. (author), Ruigrok, E. (author), Verdel, A. (author), Jousset, P. (author), Hersir, G.P. (author)
Tomographic imaging based on ambient seismic noise measurements has shown to be a powerful tool, especially in areas like Iceland, where the microseism illumination is excellent. In this paper, we produce a 3D S-wave tomographic image over the western Reykjanes Peninsula high-enthalpy geothermal fields and evaluate the reliability of the...
article 2019
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Verdel, A. (author), van Haeringen, D. (author), Vandeweijer, V. (author), Carpentier, S. (author), Meekes, S. (author)
We demonstrate in this geothermal exploration case study performed in The Netherlands that ambient noise seismic interferometry (ANSI) can be an effective and efficient method for obtaining surface wave dispersion curves, leading to shallow shear-wave velocity-depth profiles that can improve imaging of deep structures. As the ANSI method...
conference paper 2019
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de Laat, J. (author), Weemstra, C. (author), Verdel, A. (author), Jousset, P. (author), Blanck, H. (author)
Timing errors are a notorious problem in seismic data acquisition and processing. A technique is presented that allows such time shifts to be detected and corrected in a systematic fashion. The methodology relies on virtual-source responses retrieved through the application of seismic interferometry (SI). In application to recordings of ambient...
conference paper 2018
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Verdel, A. (author), Wedemeijer, H. (author), Paap, B. (author), Vandeweijer, V. (author), Weemstra, C. (author), Jousset, P. (author), Franke, S. (author), Blanck, H. (author), Águstsson, K. (author), Hersir, G.P. (author)
We present results from the application of ambient noise seismic interferometry (ANSI) to data that were recorded continuously in 2014 and 2015 at Iceland’s peninsula Reykjanes. The objective of this study is the retrieval of reflected body waves (P-waves) that provide high-resolution velocity-versus-depth as well as subsurface structural...
conference paper 2016
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Boullenger, B. (author), Verdel, A. (author), Paap, B. (author), Thorbecke, J. (author), Draganov, D. (author)
Seismic interferometry applied to ambient-noise measurements allows the retrieval of the seismic response between pairs of receivers. We studied ambient-noise seismic interferometry (ANSI) to retrieve time-lapse reflection responses from a reservoir during CO<inf>2</inf> geologic sequestration, using the case of the experimental site of Ketzin,...
article 2014
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Boullenger, B. (author), Verdel, A. (author), Thorbecke, J. (author), Draganov, D. (author)
Since 2008, CO2 has been injected at the demonstration site for CO2 sequestration in Ketzin, Germany. Since 2009, a permanent array of seismic receivers installed by TNO at the injection site has recorded passive data continuously. It is the intention of TNO to use seismic interferometry (SI) by cross-correlation applied to the recorded ambient...
conference paper 2013
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Draganov, D. (author), Campman, X. (author), Thorbecke, J. (author), Verdel, A. (author), Wapenaar, K. (author)
The successful surface waves retrieval in solid-Earth seismology using long-time correlations and subsequent tomographic images of the crust have sparked interest in extraction of subsurface information from noise in the exploration seismology. Subsurface information in exploration seismology is usually derived from body-wave reflections > 1 Hz,...
article 2013
Searched for: author:"Verdel, A."
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