Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic
The application of the horizontal-to-vertical spectral ratio (HVSR) modeling and inversion techniques is becoming more and more widespread for assessing the seismic response and velocity model of soil deposits due to their effectiveness, environmental friendliness, relative simplicity and low cost....
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fttomskstateuniv:koha:001010829 2023-12-31T10:03:52+01:00 Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic Krylov, Artem A. Kulikov, Mikhail E. Kovachev, Sergey A. Medvedev, Igor P. Lobkovsky, Leopold I. Semiletov, Igor P. 2022 application/pdf https://doi.org/10.3390/app12199576 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001010829 eng eng koha:001010829 doi:10.3390/app12199576 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001010829 Applied Sciences. 2022. Vol. 12, № 19. P. 9576 (1-22) донные сейсмографы подводная вечная мерзлота гравитационные волны инфрагравитационные волны грунты морского дна реагирование на землетрясение сейсмический шум морского дна HVSR метод статьи в журналах info:eu-repo/semantics/article 2022 fttomskstateuniv https://doi.org/10.3390/app12199576 2023-12-05T17:42:25Z The application of the horizontal-to-vertical spectral ratio (HVSR) modeling and inversion techniques is becoming more and more widespread for assessing the seismic response and velocity model of soil deposits due to their effectiveness, environmental friendliness, relative simplicity and low cost. Nevertheless, a number of issues related to the use of these techniques in difficult natural conditions, such as in the shelf areas of the Arctic seas, where the critical structures are also designed, remain poorly understood. In this paper, we describe the features of applying the HVSR modeling and inversion techniques to seismic records obtained by ocean-bottom seismographs (OBS) on the outer shelf of the Laptev Sea. This region is characterized by high seismotectonic activity, as well as sparse submarine permafrost distribution and the massive release of bubble methane from bottom sediments. The seismic stations were installed for one year and their period of operation included periods of time when the sea was covered with ice and when the sea was ice-free. The results of processing of the recorded ambient seismic noise, as well as the wave recorder data and ERA5 and EUMETSAT reanalysis data, showed a strong dependence of seafloor seismic noise on the presence of sea ice cover, as well as weather conditions, wind speed in particular. Wind-generated gravity waves, as well as infragravity waves, are responsible for the increase in the level of ambient seismic noise. The high-frequency range of 5 Hz and above is strongly affected by the coupling effect, which in turn also depends on wind-generated gravity waves and infragravity waves. The described seafloor seismic noise features must be taken into account during HVSR modeling and interpretation. The obtained HVSR curves plotted from the records of one of the OBSs revealed a resonant peak corresponding to 3 Hz, while the curves plotted from the records of another OBS did not show clear resonance peaks in the representative frequency range. Since both OBSs were located ... Article in Journal/Newspaper Arctic Ice laptev Laptev Sea permafrost Sea ice вечная мерзлота Tomsk State University Research Library Applied Sciences 12 19 9576 |
institution |
Open Polar |
collection |
Tomsk State University Research Library |
op_collection_id |
fttomskstateuniv |
language |
English |
topic |
донные сейсмографы подводная вечная мерзлота гравитационные волны инфрагравитационные волны грунты морского дна реагирование на землетрясение сейсмический шум морского дна HVSR метод |
spellingShingle |
донные сейсмографы подводная вечная мерзлота гравитационные волны инфрагравитационные волны грунты морского дна реагирование на землетрясение сейсмический шум морского дна HVSR метод Krylov, Artem A. Kulikov, Mikhail E. Kovachev, Sergey A. Medvedev, Igor P. Lobkovsky, Leopold I. Semiletov, Igor P. Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic |
topic_facet |
донные сейсмографы подводная вечная мерзлота гравитационные волны инфрагравитационные волны грунты морского дна реагирование на землетрясение сейсмический шум морского дна HVSR метод |
description |
The application of the horizontal-to-vertical spectral ratio (HVSR) modeling and inversion techniques is becoming more and more widespread for assessing the seismic response and velocity model of soil deposits due to their effectiveness, environmental friendliness, relative simplicity and low cost. Nevertheless, a number of issues related to the use of these techniques in difficult natural conditions, such as in the shelf areas of the Arctic seas, where the critical structures are also designed, remain poorly understood. In this paper, we describe the features of applying the HVSR modeling and inversion techniques to seismic records obtained by ocean-bottom seismographs (OBS) on the outer shelf of the Laptev Sea. This region is characterized by high seismotectonic activity, as well as sparse submarine permafrost distribution and the massive release of bubble methane from bottom sediments. The seismic stations were installed for one year and their period of operation included periods of time when the sea was covered with ice and when the sea was ice-free. The results of processing of the recorded ambient seismic noise, as well as the wave recorder data and ERA5 and EUMETSAT reanalysis data, showed a strong dependence of seafloor seismic noise on the presence of sea ice cover, as well as weather conditions, wind speed in particular. Wind-generated gravity waves, as well as infragravity waves, are responsible for the increase in the level of ambient seismic noise. The high-frequency range of 5 Hz and above is strongly affected by the coupling effect, which in turn also depends on wind-generated gravity waves and infragravity waves. The described seafloor seismic noise features must be taken into account during HVSR modeling and interpretation. The obtained HVSR curves plotted from the records of one of the OBSs revealed a resonant peak corresponding to 3 Hz, while the curves plotted from the records of another OBS did not show clear resonance peaks in the representative frequency range. Since both OBSs were located ... |
format |
Article in Journal/Newspaper |
author |
Krylov, Artem A. Kulikov, Mikhail E. Kovachev, Sergey A. Medvedev, Igor P. Lobkovsky, Leopold I. Semiletov, Igor P. |
author_facet |
Krylov, Artem A. Kulikov, Mikhail E. Kovachev, Sergey A. Medvedev, Igor P. Lobkovsky, Leopold I. Semiletov, Igor P. |
author_sort |
Krylov, Artem A. |
title |
Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic |
title_short |
Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic |
title_full |
Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic |
title_fullStr |
Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic |
title_full_unstemmed |
Peculiarities of the HVSR method application to seismic records obtained by ocean-bottom seismographs in the Arctic |
title_sort |
peculiarities of the hvsr method application to seismic records obtained by ocean-bottom seismographs in the arctic |
publishDate |
2022 |
url |
https://doi.org/10.3390/app12199576 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001010829 |
genre |
Arctic Ice laptev Laptev Sea permafrost Sea ice вечная мерзлота |
genre_facet |
Arctic Ice laptev Laptev Sea permafrost Sea ice вечная мерзлота |
op_source |
Applied Sciences. 2022. Vol. 12, № 19. P. 9576 (1-22) |
op_relation |
koha:001010829 doi:10.3390/app12199576 https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001010829 |
op_doi |
https://doi.org/10.3390/app12199576 |
container_title |
Applied Sciences |
container_volume |
12 |
container_issue |
19 |
container_start_page |
9576 |
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1786826766244904960 |