Comparative Measurements of Local Seismic Rotations by Three Independent Methods

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F20%3A00534817" target="_blank" >RIV/67985891:_____/20:00534817 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/20:10420979
Result on the web
<a href="https://www.mdpi.com/1424-8220/20/19/5679" target="_blank" >https://www.mdpi.com/1424-8220/20/19/5679</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/s20195679" target="_blank" >10.3390/s20195679</a>

Result language
angličtina
Original language name
Comparative Measurements of Local Seismic Rotations by Three Independent Methods
Original language description
A comparative active experiment that is aimed at collocated measurement of seismic rotation rates along three orthogonal axes by means of three different methods is described. The rotation rates in a short-period range of 6-20 Hz were obtained using three different methods: the 6C Rotaphone sensor system developed by the authors, the commercial R-1 rotational sensor by Eentec, and a small-aperture array of twelve standard velocigraphs in a rectangular arrangement. Those three methods are compared and discussed in detail. A medium-size quarry blast was used as a seismic source. At a distance of approximately 240 m, the rotation rates reached an amplitude of the order of magnitude of 10(-4)-10(-5) rad/s. The array derived rotation rates displayed serious limitations, as clearly documented. The R-1 instruments have shown certain technical problems that partly limit their applicability. The measured rotation rates were compared to the relevant acceleration components according to rotation-to-translation relations. Out of all the three methods, the records best matching the acceleration components were made by Rotaphone. The experiment also revealed that rotation rates in the given short-period range noticeably changed over a distance as short as 2 m.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology

Project
<a href="/en/project/LTAUSA19083" target="_blank" >LTAUSA19083: Six-component continuous monitoring of seismic swarms and other earthquakes in the region of Long Valley Caldera, California</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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