Global characterization of seismic noise with broadband seismometers
In this paper, we present an analysis of seismic spectra that were calculated from all broadband channels (BH?) made available through IRIS, NIED F-net and Orfeus servers covering the past five years and beyond. A general characterization of the data is given in terms of spectral histograms and data...
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ftdatacite:10.48550/arxiv.1202.4826 2023-05-15T13:54:43+02:00 Global characterization of seismic noise with broadband seismometers Coughlin, Michael William Harms, Jan 2012 https://dx.doi.org/10.48550/arxiv.1202.4826 https://arxiv.org/abs/1202.4826 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Geophysics physics.geo-ph FOS Physical sciences Preprint Article article CreativeWork 2012 ftdatacite https://doi.org/10.48550/arxiv.1202.4826 2022-04-01T14:00:42Z In this paper, we present an analysis of seismic spectra that were calculated from all broadband channels (BH?) made available through IRIS, NIED F-net and Orfeus servers covering the past five years and beyond. A general characterization of the data is given in terms of spectral histograms and data-availability plots. We show that the spectral information can easily be categorized in time and regions. Spectral histograms indicate that seismic stations exist in Africa, Australia and Antarctica that measure spectra significantly below the global low-noise models above 1 Hz. We investigate world-wide coherence between the seismic spectra and other data sets like proximity to cities, station elevation, earthquake frequency, and wind speeds. Elevation of seismic stations in the US is strongly anti-correlated with seismic noise near 0.2 Hz and again above 1.5 Hz. Urban settlements are shown to produce excess noise above 1 Hz, but correlation curves look very different depending on the region. It is shown that wind speeds can be strongly correlated with seismic noise above 0.1 Hz, whereas earthquakes produce seismic noise that shows most clearly in correlation around 80 mHz. : 16 pages, 9 figures Report Antarc* Antarctica DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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Geophysics physics.geo-ph FOS Physical sciences |
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Geophysics physics.geo-ph FOS Physical sciences Coughlin, Michael William Harms, Jan Global characterization of seismic noise with broadband seismometers |
topic_facet |
Geophysics physics.geo-ph FOS Physical sciences |
description |
In this paper, we present an analysis of seismic spectra that were calculated from all broadband channels (BH?) made available through IRIS, NIED F-net and Orfeus servers covering the past five years and beyond. A general characterization of the data is given in terms of spectral histograms and data-availability plots. We show that the spectral information can easily be categorized in time and regions. Spectral histograms indicate that seismic stations exist in Africa, Australia and Antarctica that measure spectra significantly below the global low-noise models above 1 Hz. We investigate world-wide coherence between the seismic spectra and other data sets like proximity to cities, station elevation, earthquake frequency, and wind speeds. Elevation of seismic stations in the US is strongly anti-correlated with seismic noise near 0.2 Hz and again above 1.5 Hz. Urban settlements are shown to produce excess noise above 1 Hz, but correlation curves look very different depending on the region. It is shown that wind speeds can be strongly correlated with seismic noise above 0.1 Hz, whereas earthquakes produce seismic noise that shows most clearly in correlation around 80 mHz. : 16 pages, 9 figures |
format |
Report |
author |
Coughlin, Michael William Harms, Jan |
author_facet |
Coughlin, Michael William Harms, Jan |
author_sort |
Coughlin, Michael William |
title |
Global characterization of seismic noise with broadband seismometers |
title_short |
Global characterization of seismic noise with broadband seismometers |
title_full |
Global characterization of seismic noise with broadband seismometers |
title_fullStr |
Global characterization of seismic noise with broadband seismometers |
title_full_unstemmed |
Global characterization of seismic noise with broadband seismometers |
title_sort |
global characterization of seismic noise with broadband seismometers |
publisher |
arXiv |
publishDate |
2012 |
url |
https://dx.doi.org/10.48550/arxiv.1202.4826 https://arxiv.org/abs/1202.4826 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1202.4826 |
_version_ |
1766260808329723904 |