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  Tracking a Vibroseis Truck using 6 Rotational Sensors in Fürstenfeldbruck, Germany

Izgi, G., Eibl, E., Krüger, F., Bernauer, F. (2023): Tracking a Vibroseis Truck using 6 Rotational Sensors in Fürstenfeldbruck, Germany, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3186

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020412 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020412_1
Genre: Conference Paper

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 Creators:
Izgi, Gizem1, Author
Eibl, Eva1, Author
Krüger, Frank1, Author
Bernauer, Felix1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Six degree-of-freedom (6-DoF) ground motion measurements are recorded combining a rotational sensor and a seismometer. This allows in principle to determine the back azimuth of a moving source using a single point measurement. We investigated the movement of a vibroseis truck operated from 20 November 2019, 11:00 UTC to 21 November 2019, 14:00 UTC. We used 480 Sweep signals each lasting 15 seconds in a broad frequency range between 7 to 120 Hz from 160 different locations. We derived back azimuths for each sweep from 6 DoF data and calculated root mean square amplitudes of each ground rotation component. We repeat this procedure for 5 other nearby rotational sensors of the same type. Within the first day, the North pointing rotation axis of all sensors recorded larger amplitude signals at the beginning of the experiment proving that SV shear wave energy is dominant. Later, we observed larger amplitudes on the East component following the direction of the moving vibroseis truck. Conventional methods to locate a seismic source rely on the P wave polarization or arrival times measured with a network of stations. In this study we used S waves to track the vibroseis truck movements since rotational sensors are not sensitive to P wave motions.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-3186
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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