Monitoring and Imaging Based on Interferometric Concepts

Abstract : Utilization of coherent phase information in complex wave fields formes the basis of interferometric time series analysis. The concept is known since decades, but until about 15 years ago there have been no practical implementations. Meanwhile seismic interferometry is used in a wide range from investigations of the earthÕs deep crust to engineering applications. Focused on monitoring and imaging the MIIC project as part of the German GeoTechnologien program has contributed to this development. Special attention was given to the transfer of methodology to different length scales that range from centimeters, in laboratory applications, over geotechnical scales to even kilometers in seismological applications. General purpose methods and open source software was developed, which can be used on all scales. The core of the MIIC software is a Python library organized in different modules for various processing tasks. A graphical user interface facilitates the creation of processing routines by visualizing connections and dependencies of variables and by checking the consistency of data types. Example applications have included carbon sequestration, salt mine and railrod embankment monitoring as well as imaging changes in concrete constructions.
Mots-clés : Acoustic emission
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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Christoph Sens-Schönfelder, Ernst Niederleithinger, Martina Gassenmeier, Thiemann Katja, Florian Köllner. Monitoring and Imaging Based on Interferometric Concepts. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01021038〉

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