Long-period directivity pulses of strong ground motion during the 2023 Mw7.8 Kahramanmaras earthquake

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10473400" target="_blank" >RIV/00216208:11320/23:10473400 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=RV.VvvT-Ts" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=RV.VvvT-Ts</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s43247-023-01076-x" target="_blank" >10.1038/s43247-023-01076-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Long-period directivity pulses of strong ground motion during the 2023 Mw7.8 Kahramanmaras earthquake

Popis výsledku v původním jazyce

Damages due to large earthquakes are influenced by broadband source effects that remain enigmatic. Here we develop a broadband (0-10 Hz) source model of the disastrous 2023 Mw7.8 Kahramanmaras, Turkiye, earthquake by modeling recordings of 100 stations. The model combines coherent and incoherent rupture propagation at low and high frequencies, respectively. We adopt a planar 300 km long kinked fault geometry from geology and pre-constrain the slip model from seismic and geodetic data. We demonstrate that the southwestward rupture propagation was delayed by similar to 15 s and that the observed strong waveform pulses can be explained by the directivity effect due to a specific combination of the coherent and incoherent components. We show that even a rough estimate of major rupture parameters makes the ground motion simulations of such large events possible, and may thus improve the efficiency of rapid, physics-based, shaking estimation for emergency response and seismic hazard assessment.

Název v anglickém jazyce

Long-period directivity pulses of strong ground motion during the 2023 Mw7.8 Kahramanmaras earthquake

Popis výsledku anglicky

Damages due to large earthquakes are influenced by broadband source effects that remain enigmatic. Here we develop a broadband (0-10 Hz) source model of the disastrous 2023 Mw7.8 Kahramanmaras, Turkiye, earthquake by modeling recordings of 100 stations. The model combines coherent and incoherent rupture propagation at low and high frequencies, respectively. We adopt a planar 300 km long kinked fault geometry from geology and pre-constrain the slip model from seismic and geodetic data. We demonstrate that the southwestward rupture propagation was delayed by similar to 15 s and that the observed strong waveform pulses can be explained by the directivity effect due to a specific combination of the coherent and incoherent components. We show that even a rough estimate of major rupture parameters makes the ground motion simulations of such large events possible, and may thus improve the efficiency of rapid, physics-based, shaking estimation for emergency response and seismic hazard assessment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

<a href="/cs/project/GA23-06345S" target="_blank" >GA23-06345S: Seismo-geodynamické modelování Helénské subdukce</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Communications Earth &amp; Environment

ISSN

2662-4435

e-ISSN

2662-4435

Svazek periodika

4

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

413

Kód UT WoS článku

001103530700001

EID výsledku v databázi Scopus

2-s2.0-85176250118