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Deployment of a Distributed Fiber Optic Sensing (DFOS) monitoring station in Munich within INSIDE project

Azzola, Jerome ORCID iD icon 1; Baasch, Ralph; Schulz, Ilka; Gaucher, Emmanuel ORCID iD icon 1; Bögelspacher, Felix 1
1 Institut für Angewandte Geowissenschaften (AGW), Karlsruher Institut für Technologie (KIT)

Abstract:

Distributed Fiber Optic Sensing (DFOS) is an innovative sensing technique, which has recently gained interest in various fields of geophysics, in particular for near-surface measurements. With the purpose of passive seismic monitoring (in the framework of the INSIDE project, supported by the German Federal Ministry for Economic Affairs and Energy, BMWi) a DFOS measurement station has been installed in Buchenhain (Gemeinde Baierbrunn, Landkreis München). Next to the DFOS system, a Trillium Compact 120 s seismometer has also been deployed to allow further processing of the data as well as the comparison of the measurements produced by the different acquisitions technologies. DFOS involves the use of optoelectronic devices, referred to as the interrogators, which send laser pulses in an optical fiber acting as the sensor. The technique aims to observe the deformation of the fiber in time and space, thanks to the light backscattered along the fiber. Therefore, the sensing technique allows interrogating long profiles with a dense spatial sampling, which is uneasy to obtain from classic geophysical techniques. Depending on the application and using the appropriate interrogator, DFOS can lead to distributed acoustic sensing (DAS), temperature sensing (DTS) or strain sensing (DSS) with various spatial and temporal resolutions. ... mehr


Volltext §
DOI: 10.5445/IR/1000150919
Veröffentlicht am 29.11.2022
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Vortrag
Publikationsjahr 2022
Sprache Englisch
Identifikator KITopen-ID: 1000150919
Veranstaltung 82. Jahrestagung der Deutschen Physikalischen Gesellschaft (DGG 2022), Online, 07.03.2022 – 10.03.2022
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