Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)

Neukirch, Maik; García-Jerez, Antonio; Villaseñor, Antonio; Stehly, L.; Boue, P.; Chevrot, S.; Sylvander, Matthieu; Diaz, J.; Ruiz Fernández, Mario; Luzón, Francisco; Collin, Magali; Calassou, Sylvain; Polychronopoulou, K.; Martakis, N.; Bitri, A.

Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)

European Geosciences Union (EGU) General Assembly 2020, 4-8 May 2020.

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Main Authors:	Neukirch, Maik, García-Jerez, Antonio, Villaseñor, Antonio, Stehly, L., Boue, P., Chevrot, S., Sylvander, Matthieu, Diaz, J., Ruiz Fernández, Mario, Luzón, Francisco, Collin, Magali, Calassou, Sylvain, Polychronopoulou, K., Martakis, N., Bitri, A.
Format:	comunicación de congreso biblioteca
Published:	European Geosciences Union 2020-05-04
Subjects:	S-wave velocity,
Online Access:	http://hdl.handle.net/10261/214679
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id	dig-icm-es-10261-214679
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spelling	dig-icm-es-10261-2146792021-08-26T07:19:36Z Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France) Neukirch, Maik García-Jerez, Antonio Villaseñor, Antonio Stehly, L. Boue, P. Chevrot, S. Sylvander, Matthieu Diaz, J. Ruiz Fernández, Mario Luzón, Francisco Collin, Magali Calassou, Sylvain Polychronopoulou, K. Martakis, N. Bitri, A. S-wave velocity European Geosciences Union (EGU) General Assembly 2020, 4-8 May 2020. Horizontal-to-Vertical Spectral Ratios (HVSR) and Rayleigh group velocity dispersion curves (DC) can be used to estimate the shallow S-wave velocity (Vs) structure. Knowing the shallow Vs structure is important for geophysical data interpretation either in order to better constrain data inversions for P-wave velocity (Vp) structures such as travel time tomography or full waveform inversions, or to directly study the Vs structure for geo-engineering purposes (e.g. ground motion prediction). The purpose of this study is to appraise in particular how much information HVSR can add in a large N experiment and how different instrumentation types affect this. During the Maupasacq large-scale experiment, 197 three-component short-period stations, 190 geophone nodes and 54 broadband seismometers were continuously operated in Southern France for 6 months (April to October 2017) covering an area of approximately 1500 km2 with a site spacing of approximately 1 to 3 km. On the obtained HVSR and DC data, a statistical Joint inversion is performed for the shallow Vs structure. The results indicate that the addition of HVSR data to the DC inversion reduces the variance of the recovered shallow Vs model and improves the convergence to a smaller data misfit. While broadband and short period instruments delivered similar results, geophone nodes performed significantly worse due to their much higher cut off frequency. 2020-06-17T18:27:00Z 2020-06-17T18:27:00Z 2020-05-04 2020-06-17T18:27:00Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 EGU General Assembly (2020) http://hdl.handle.net/10261/214679 10.5194/egusphere-egu2020-13681 Publisher's version https://doi.org/10.5194/egusphere-egu2020-13681 Sí open European Geosciences Union
institution	ICM ES
collection	DSpace
country	España
countrycode	ES
component	Bibliográfico
access	En linea
databasecode	dig-icm-es
tag	biblioteca
region	Europa del Sur
libraryname	Biblioteca del ICM España
topic	S-wave velocity S-wave velocity
spellingShingle	S-wave velocity S-wave velocity Neukirch, Maik García-Jerez, Antonio Villaseñor, Antonio Stehly, L. Boue, P. Chevrot, S. Sylvander, Matthieu Diaz, J. Ruiz Fernández, Mario Luzón, Francisco Collin, Magali Calassou, Sylvain Polychronopoulou, K. Martakis, N. Bitri, A. Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)
description	European Geosciences Union (EGU) General Assembly 2020, 4-8 May 2020.
format	comunicación de congreso
topic_facet	S-wave velocity
author	Neukirch, Maik García-Jerez, Antonio Villaseñor, Antonio Stehly, L. Boue, P. Chevrot, S. Sylvander, Matthieu Diaz, J. Ruiz Fernández, Mario Luzón, Francisco Collin, Magali Calassou, Sylvain Polychronopoulou, K. Martakis, N. Bitri, A.
author_facet	Neukirch, Maik García-Jerez, Antonio Villaseñor, Antonio Stehly, L. Boue, P. Chevrot, S. Sylvander, Matthieu Diaz, J. Ruiz Fernández, Mario Luzón, Francisco Collin, Magali Calassou, Sylvain Polychronopoulou, K. Martakis, N. Bitri, A.
author_sort	Neukirch, Maik
title	Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)
title_short	Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)
title_full	Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)
title_fullStr	Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)
title_full_unstemmed	Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)
title_sort	statistics on the performance of instrument types and the significance of hvsr data for shallow vs hvsr/dc joint inversions - a result from the large-n maupasacq experiment (southern france)
publisher	European Geosciences Union
publishDate	2020-05-04
url	http://hdl.handle.net/10261/214679
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Statistics on the Performance of Instrument Types and the Significance of HVSR data for Shallow Vs HVSR/DC Joint Inversions - A Result from the Large-N Maupasacq Experiment (Southern France)

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