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NEW SEISMIC NOISE MODEL FOR ROMANIA

Ph.D. Bogdan Grecu, Ph.D. Cristian Neagoe, Raluca Partheniu, Eduard Nastase, Ph.D. Bogdan Zaharia

First published: 2017-06-20https://doi.org/10.5593/sgem2017/14/s05.036View metrics

Abstract

In this paper, we analyze almost ten years of continuous recordings (November 2007пїЅ April 2017) from 114 stations of the Romanian Seismic Network using the power spectral densities and their corresponding probability density functions (PSD PDF). For each vertical station component, we compute the statistical mode for noise levels from the PSD PDFs. The noise mode represents the highest probability noise level for a given station. We then construct the PSD PDF mode low-noise model for Romania (RONM) from the minimum of all the noise modes at each period. The RONM is shown to be very close to the PetersonпїЅs (1993) new low noise model. The diurnal and seasonal variations of the RONM are also shown. Finally, we compare our mode noise model with those obtained in similar way in different parts of the world: Greece, New Zealand and United States. We consider the RONM as a more realistic reference model for future installations of seismic stations in Romania and for assessing the performance of the existing ones.

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Publication details

Title
NEW SEISMIC NOISE MODEL FOR ROMANIA
Authors
Ph.D. Bogdan Grecu, Ph.D. Cristian Neagoe, Raluca Partheniu, Eduard Nastase, Ph.D. Bogdan Zaharia
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
285-292
SWS Citekey
Grecu20175285292
ISSN
1314-2704
ISBN
978-619-7408-00-3
Language
en
Publication type
Conference Paper
Keywords
ambient seismic noiseprobability density functionsmode noise model
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