Measuring seismic station timing errors from ambient noise
Cross correlations of ambient seismic noise recorded at two stations can be used to estimate the Green’s function between these two stations. Since seismic stations are continuously recoding seismic noise, the Green’s function can be used to monitor the stability of a network of stations. The Green’...
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The University of Bergen
2019
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ftunivbergen:oai:bora.uib.no:1956/18942 2023-05-15T17:43:29+02:00 Measuring seismic station timing errors from ambient noise Løviknes, Karina 2019-01-17T23:00:02Z application/pdf https://hdl.handle.net/1956/18942 eng eng The University of Bergen https://hdl.handle.net/1956/18942 Copyright the Author. All rights reserved instrumental timing errors Ambient seismic noise cross correlation 756199 Master thesis 2019 ftunivbergen 2023-03-14T17:44:11Z Cross correlations of ambient seismic noise recorded at two stations can be used to estimate the Green’s function between these two stations. Since seismic stations are continuously recoding seismic noise, the Green’s function can be used to monitor the stability of a network of stations. The Green’s function is the impulse response of the structure, and changes occurring in the structure will therefore affect the shape of the Green’s function. However, variations in the Green’s function can also be caused by changes in noise distribution and instrumental errors. In this thesis, techniques, similar to those used for monitoring velocity changes in the structure, are applied on ambient seismic noise to find instrumental timing errors. There are several steps between seismic noise and the Green's function, and the processing procedure is therefore divided into four main parts: preparing the data, preprocessing, cross correlation and stacking, and measuring the timing errors. A detailed description of the different parts is given and the limitations of the method are examined. The method is applied to noise recorded on stations from the temporary Norwegian network NEONOR2, that was located in northern Norway. Masteroppgåve i geovitskap MAMN-GEOV GEOV399 Master Thesis Northern Norway University of Bergen: Bergen Open Research Archive (BORA-UiB) Norway |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
instrumental timing errors Ambient seismic noise cross correlation 756199 |
spellingShingle |
instrumental timing errors Ambient seismic noise cross correlation 756199 Løviknes, Karina Measuring seismic station timing errors from ambient noise |
topic_facet |
instrumental timing errors Ambient seismic noise cross correlation 756199 |
description |
Cross correlations of ambient seismic noise recorded at two stations can be used to estimate the Green’s function between these two stations. Since seismic stations are continuously recoding seismic noise, the Green’s function can be used to monitor the stability of a network of stations. The Green’s function is the impulse response of the structure, and changes occurring in the structure will therefore affect the shape of the Green’s function. However, variations in the Green’s function can also be caused by changes in noise distribution and instrumental errors. In this thesis, techniques, similar to those used for monitoring velocity changes in the structure, are applied on ambient seismic noise to find instrumental timing errors. There are several steps between seismic noise and the Green's function, and the processing procedure is therefore divided into four main parts: preparing the data, preprocessing, cross correlation and stacking, and measuring the timing errors. A detailed description of the different parts is given and the limitations of the method are examined. The method is applied to noise recorded on stations from the temporary Norwegian network NEONOR2, that was located in northern Norway. Masteroppgåve i geovitskap MAMN-GEOV GEOV399 |
format |
Master Thesis |
author |
Løviknes, Karina |
author_facet |
Løviknes, Karina |
author_sort |
Løviknes, Karina |
title |
Measuring seismic station timing errors from ambient noise |
title_short |
Measuring seismic station timing errors from ambient noise |
title_full |
Measuring seismic station timing errors from ambient noise |
title_fullStr |
Measuring seismic station timing errors from ambient noise |
title_full_unstemmed |
Measuring seismic station timing errors from ambient noise |
title_sort |
measuring seismic station timing errors from ambient noise |
publisher |
The University of Bergen |
publishDate |
2019 |
url |
https://hdl.handle.net/1956/18942 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Norway |
genre_facet |
Northern Norway |
op_relation |
https://hdl.handle.net/1956/18942 |
op_rights |
Copyright the Author. All rights reserved |
_version_ |
1766145566739267584 |