The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station
Seismic investigations are mainly limited by seismic noise. Two microbarometers have been installed in the seismic vault of two different GEOSCOPE stations, one at SSB and the other at TAM. All vertical components and most of the horizontal components show a significant correlation with pressure. In...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Seismological Society of America
1996
|
Subjects: | |
Online Access: | https://authors.library.caltech.edu/48157/ https://authors.library.caltech.edu/48157/1/1760.full.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140807-074345381 |
id |
ftcaltechauth:oai:authors.library.caltech.edu:48157 |
---|---|
record_format |
openpolar |
spelling |
ftcaltechauth:oai:authors.library.caltech.edu:48157 2023-05-15T17:09:57+02:00 The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station Beauduin, R. Lognonné, P. Montagner, J. P. Cacho, S. Karczewski, J. F. Morand, M. 1996-12 application/pdf https://authors.library.caltech.edu/48157/ https://authors.library.caltech.edu/48157/1/1760.full.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140807-074345381 unknown Seismological Society of America https://authors.library.caltech.edu/48157/1/1760.full.pdf Beauduin, R. and Lognonné, P. and Montagner, J. P. and Cacho, S. and Karczewski, J. F. and Morand, M. (1996) The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station. Bulletin of the Seismological Society of America, 86 (6). pp. 1760-1769. ISSN 0037-1106. https://resolver.caltech.edu/CaltechAUTHORS:20140807-074345381 <https://resolver.caltech.edu/CaltechAUTHORS:20140807-074345381> Article PeerReviewed 1996 ftcaltechauth 2020-04-26T16:45:40Z Seismic investigations are mainly limited by seismic noise. Two microbarometers have been installed in the seismic vault of two different GEOSCOPE stations, one at SSB and the other at TAM. All vertical components and most of the horizontal components show a significant correlation with pressure. In order to correct the seismic signals from the atmospheric pressure noise, a transfer function between the pressure data and the seismic data is inverted. Results show that, after correction, the noise levels reached on the horizontal components are similar between the two stations, and the vertical components display noise levels below the low-noise model as defined by Peterson (1993). This technique reduces part of the noise and allows detection of small earthquakes and a better extraction of normal modes. The analysis of the lowest normal modes of the Earth excited by the M_S = 8.2 Macquarie Island earthquake is given to illustrate the perspectives of the method. Article in Journal/Newspaper Macquarie Island Caltech Authors (California Institute of Technology) |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
unknown |
description |
Seismic investigations are mainly limited by seismic noise. Two microbarometers have been installed in the seismic vault of two different GEOSCOPE stations, one at SSB and the other at TAM. All vertical components and most of the horizontal components show a significant correlation with pressure. In order to correct the seismic signals from the atmospheric pressure noise, a transfer function between the pressure data and the seismic data is inverted. Results show that, after correction, the noise levels reached on the horizontal components are similar between the two stations, and the vertical components display noise levels below the low-noise model as defined by Peterson (1993). This technique reduces part of the noise and allows detection of small earthquakes and a better extraction of normal modes. The analysis of the lowest normal modes of the Earth excited by the M_S = 8.2 Macquarie Island earthquake is given to illustrate the perspectives of the method. |
format |
Article in Journal/Newspaper |
author |
Beauduin, R. Lognonné, P. Montagner, J. P. Cacho, S. Karczewski, J. F. Morand, M. |
spellingShingle |
Beauduin, R. Lognonné, P. Montagner, J. P. Cacho, S. Karczewski, J. F. Morand, M. The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station |
author_facet |
Beauduin, R. Lognonné, P. Montagner, J. P. Cacho, S. Karczewski, J. F. Morand, M. |
author_sort |
Beauduin, R. |
title |
The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station |
title_short |
The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station |
title_full |
The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station |
title_fullStr |
The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station |
title_full_unstemmed |
The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station |
title_sort |
effects of the atmospheric pressure changes on seismic signals or how to improve the quality of a station |
publisher |
Seismological Society of America |
publishDate |
1996 |
url |
https://authors.library.caltech.edu/48157/ https://authors.library.caltech.edu/48157/1/1760.full.pdf https://resolver.caltech.edu/CaltechAUTHORS:20140807-074345381 |
genre |
Macquarie Island |
genre_facet |
Macquarie Island |
op_relation |
https://authors.library.caltech.edu/48157/1/1760.full.pdf Beauduin, R. and Lognonné, P. and Montagner, J. P. and Cacho, S. and Karczewski, J. F. and Morand, M. (1996) The Effects of the Atmospheric Pressure Changes on Seismic Signals or How to Improve the Quality of a Station. Bulletin of the Seismological Society of America, 86 (6). pp. 1760-1769. ISSN 0037-1106. https://resolver.caltech.edu/CaltechAUTHORS:20140807-074345381 <https://resolver.caltech.edu/CaltechAUTHORS:20140807-074345381> |
_version_ |
1766066333726801920 |