Strong fast long-period waves in the Efpalio 2010 earthquake records: explanation in terms of leaking modes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10272312" target="_blank" >RIV/00216208:11320/14:10272312 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10950-013-9402-3" target="_blank" >http://dx.doi.org/10.1007/s10950-013-9402-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10950-013-9402-3" target="_blank" >10.1007/s10950-013-9402-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Strong fast long-period waves in the Efpalio 2010 earthquake records: explanation in terms of leaking modes

Popis výsledku v původním jazyce

The January 18, 2010, shallow earthquake in the Corinth Gulf, Greece (M (w) 5.3) generated unusually strong long-period waves (periods 4-8 s) between the P and S wave arrival. These periods, being significantly longer than the source duration, indicateda structural effect. The waves were observed in epicentral distances 40-250 km and were significant on radial and vertical component. None of existing velocity models of the studied region provided explanation of the waves. By inverting complete waveforms, we obtained an 1-D crustal model explaining the observation. The most significant feature of the best-fitting model (as well as the whole suite of models almost equally well fitting the waveforms) is a strong velocity step at depth about 4 km. In theobtained velocity model, the fast long-period wave was modeled by modal summation and identified as a superposition of several leaking modes. In this sense, the wave is qualitatively similar to P long or Pnl waves, which however are usual

Název v anglickém jazyce

Strong fast long-period waves in the Efpalio 2010 earthquake records: explanation in terms of leaking modes

Popis výsledku anglicky

The January 18, 2010, shallow earthquake in the Corinth Gulf, Greece (M (w) 5.3) generated unusually strong long-period waves (periods 4-8 s) between the P and S wave arrival. These periods, being significantly longer than the source duration, indicateda structural effect. The waves were observed in epicentral distances 40-250 km and were significant on radial and vertical component. None of existing velocity models of the studied region provided explanation of the waves. By inverting complete waveforms, we obtained an 1-D crustal model explaining the observation. The most significant feature of the best-fitting model (as well as the whole suite of models almost equally well fitting the waveforms) is a strong velocity step at depth about 4 km. In theobtained velocity model, the fast long-period wave was modeled by modal summation and identified as a superposition of several leaking modes. In this sense, the wave is qualitatively similar to P long or Pnl waves, which however are usual

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DC - Seismologie, vulkanologie a struktura Země

OECD FORD obor

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Projekt

<a href="/cs/project/GAP210%2F11%2F0854" target="_blank" >GAP210/11/0854: Prohloubení fyzikálního pohledu na zemětřesení ve Středomoří</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Seismology

ISSN

1383-4649

e-ISSN

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Svazek periodika

18

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

81-91

Kód UT WoS článku

000328328000006

EID výsledku v databázi Scopus

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