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The seismic attenuation signature of collisional orogens and sedimentary basins within the Carpathian Orogen by Felix Borleanu; Laura Petrescu; Ioan Seghedi; Christine Thomas; Luca De Siena is a Earth and Planetary Sciences article available to read on EtoBox.

What is The seismic attenuation signature of collisional orogens and sedimentary basins within the Carpathian Orogen about?

Sedimentary basins in collisional settings result from interactions within and between lithospheric plates and sublithospheric mantle. Imaging their structure brings fundamental constraints to both the extraction of hydrocarbon or geothermal resources and seismic hazard analyses, especially in seismogenic areas affected by fluid percolation. Seismic attenuation is highly sensitive to stress, fluid saturation, and fluid-rock interaction and can often constrain small changes in the Earth's matrix better than seismic velocity. Here, we separate different attenuation mechanisms (scattering and absorption) at multiple frequencies and map them in space to constrain the properties of the Carpathian Orogen and the surrounding basins. The separation is achieved by determining S-wave peak delay times and late-time coda quality factors based on first-order Tikhonov inversion and analytical sensitivity kernels. We analysed 366 small-to-moderate crustal local earthquakes (0.7 < ML < 5.8) recorded by permanent and temporary stations operated by the Romanian Seismic Network between 2008 and 2021. Scattering and absorption appear to be frequency-dependent and highly heterogeneous throughout the re

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Author

Felix Borleanu; Laura Petrescu; Ioan Seghedi; Christine Thomas; Luca De Siena

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)