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Characteristics of the ambient seismic field on a large-n seismic array in the Vienna Basin

Sven Schippkus, Mikael Garden and Goetz Bokelmann
Characteristics of the ambient seismic field on a large-n seismic array in the Vienna Basin
Seismological Research Letters (July 2020) Pre-Issue Publication


The ambient seismic field is now routinely used for imaging and monitoring purposes. Most commonly, applications aim at resolving crustal-scale features and utilize ocean-generated surface waves. At smaller scales and at frequencies above the microseismic peaks, local sources of seismic energy, often anthropogenic, are dominant, and understanding of their contributions to the ambient seismic field becomes important to apply ambient noise techniques. This study uses data of an industrial-scale seismic deployment covering approximately 500 km2 with 10,532 stations, each equipped with several collocated 10 Hz geophones, to provide unique insight into anthropogenic sources of seismic energy in a suburban-to-rural area. We compute amplitude levels, their distance dependency, power spectral densities, and spectrograms to describe the source characteristics. The sources we observe in great detail include windmills, a railway track and trains, cars, oil pumpjacks, power lines, gas pipelines, and airplanes. These sources exhibit time-dependent behavior that is illustrated strikingly by videos of amplitude levels in certain frequency bands that we provide as supplemental material. The data described in this study are a potential resource for future studies, such as automatic signal classification, as well as underground imaging using microseismic noise or the sources presented here.

ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: Pre-Issue Publication
Title: Characteristics of the ambient seismic field on a large-n seismic array in the Vienna Basin
Affiliation: University of Vienna, Department of Meteorology and Geophysics, Vienna, Austria
Published: 20200729
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 55
Accession Number: 2020-077208
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
N48°00'00" - N49°00'00", E16°00'00" - E17°00'00"
Secondary Affiliation: OMV, AUT, Austria
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2020
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