New Velocity Structure of the NovyKostel Earthquake-Swarm Region, West Bohemia, Determined by the Isometric Inversion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F23%3A00570947" target="_blank" >RIV/67985891:_____/23:00570947 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/23:10473520

Result on the web

<a href="https://doi.org/10.1007/s00024-023-03250-w" target="_blank" >https://doi.org/10.1007/s00024-023-03250-w</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00024-023-03250-w" target="_blank" >10.1007/s00024-023-03250-w</a>

Result language

angličtina

Original language name

New Velocity Structure of the NovyKostel Earthquake-Swarm Region, West Bohemia, Determined by the Isometric Inversion

Original language description

The intraplate West Bohemia region is characterized by relatively frequent earthquake swarms mostly concentrated in the vicinity of the NovyKostel village. Records of selected microearthquakes of the 2008 seismic swarm from a small circular area around NovyKostel with a radius of 11 km are processed with focus on availability of precise onset readings from all the selected events at all the selected stations. These data were used in the joint hypocenter-velocity inversion, employing the so-called isometric method which is especially efficient for this task. The results are two new one-dimensional velocity models, the constrained (smoother) and the unconstrained one, of the upper crust down to the depth of 11 km, and absolute locations of the selected earthquakes in the new constrained model. The foci delineate two segments of a steeply dipping fault zone. Time residuals at each of the stations display a remarkable azimuthal dependence, for both P and S waves, caused by anisotropy. No systematic dependence on epicentral distance was found even for stations outside the target area, which means that the new 1D models seem to be reasonable approximations of the real structure in the whole, much larger, West Bohemia region. No time dependence indicating possible changes of vP, vS and their ratio during the swarm was observed. A set of P-and S-wave station corrections that should be used to correct onset times in order to reach precise absolute locations was derived as an integral part of the new models.

Czech name

—

Czech description

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Type

J_imp - 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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Pure and Applied Geophysics

ISSN

0033-4553

e-ISSN

1420-9136

Volume of the periodical

180

Issue of the periodical within the volume

6

Country of publishing house

CH - SWITZERLAND

Number of pages

24

Pages from-to

2111-2134

UT code for WoS article

000957168800001

EID of the result in the Scopus database

2-s2.0-85150491126