Enrico Brandmayr

Accademia Nazionale dei Lincei

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G. F. Panza

China Earthquake Administration

Fabio Romanelli

University of Trieste

G. Vlahovic

North Carolina Central University

Maria Luce Frezzotti

University of Milano-Bicocca

Gordana Vlahovic

Duke University

Andrea Magrin

National Institute of Oceanography and Applied Geophysics

Franco Vaccari

University of Trieste

Cortney Cameron

South Florida Water Management District

Reneta Raykovа

Sofia University "St. Kliment Ohridski"

Simona Ferrando

University of Turin

Cooperative Institutions

University of Trieste

The Abdus Salam International Centre for Theoretical Physics (ICTP)

Accademia Nazionale dei Lincei

North Carolina Central University

Istituto Nazionale di Geofisica e Vulcanologia

China Earthquake Administration

University of Milano-Bicocca

National Institute of Oceanography and Applied Geophysics

Bulgarian Academy of Sciences

Institute of Earthquake Prediction Theory and Mathematical Geophysics

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Optimization for non-linear inverse problems

RENDICONTI LINCEI (2008)

Georgi Boyadzhiev Enrico Brandmayr Tommaso Pinat G. F. Panza

10.1007/s12210-008-0013-9

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Citations (30)

Stability of fault plane solutions for Mw >= 4.8 in northern Italy in 2012

arXiv (Cornell University) (2012)

Enrico Brandmayr Fabio Romanelli G. F. Panza

We propose a critical analysis of the moment tensor solutions of the major seismic events that affected northern Italy in 2012. Inverting full waveforms at regional distance using the non-linear method named INPAR, we investigate period dependent resolution that affects in particular the solutions of shallow events. This is mainly due to the poor resolution of Mzx and Mzy components of the seismic tensor when inverting signals whose wavelengths significantly exceed the source depth. As a consequence, instability affects both source depth and fault plane solution retrieval, and spurious large Compensated Linear Vector Dipole components arise. The inversion performed at cutoff periods shorter than 20 s reveals in many cases different details of the rupture process, that are not resolved inverting at longer cutoff periods. Thus we conclude that inversion of full waveforms at cutoff period as short as possible should be preferred.

Spurious relationship

Cut-off

Cutoff frequency

Fault plane

10.48550/arxiv.1210.2196

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Stability of fault plane solutions for the major N-Italy seismic events in 2012

Tectonophysics (2013)

Enrico Brandmayr Fabio Romanelli G. F. Panza

Spurious relationship

Cut-off

Fault plane

Cutoff frequency

10.1016/j.tecto.2013.08.034

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The upper crust of the Eastern Tennessee Seismic Zone: Insights from potential fields inversion

Tectonophysics (2016)

Enrico Brandmayr G. Vlahovic

Basement

Potential field

Magnetotellurics

10.1016/j.tecto.2016.07.004

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Citations (9)

Reliable Moment Tensor Inversion for Regional- to Local-Distance Earthquakes

Springer eBooks (2015)

G. F. Panza Enrico Brandmayr Andrea Magrin

Moment tensor

10.1007/978-3-642-35344-4_293

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The lithosphere-asthenosphere system of the Periadriatic region: a geophysical perspective

The EGU General Assembly (2016)

Fabio Romanelli Enrico Brandmayr G. F. Panza

Asthenosphere

Source

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Lithosphere density model in Italy: no hint for slab pull

Terra Nova (2011)

Enrico Brandmayr I. Marson Fabio Romanelli G. F. Panza

Terra Nova, 23, 292–299, 2011 Abstract The lithosphere–asthenosphere system of the Italic region in terms of shear‐velocity and density distribution with depth is suitable to investigate the geodynamic context of the region. The velocity structure is obtained through nonlinear inversion of dispersion curves compiled from surface wave tomography on cells 1° × 1° and a smoothing optimization method to choose the representative cellular model, whose layering is used as fixed ( a priori ) information to obtain a density model by means of linear inversion of gravimetric data. Seismicity and heat flow are used as independent constraints in outlining both the crustal and the seismic lid thickness; the nonlinear moment tensor inversion of recent damaging earthquakes allows some insight in the ongoing kinematic processes. Asymmetry between west‐directed (Apennines) and east‐directed (Alps, Dinarides) subductions is a robust feature of the velocity model, while density model reveals that slabs are not denser than the ambient mantle, thus supplies no evidence for slab pull.

Slab

Asthenosphere

Layering

Seismic Tomography

geodynamics

Smoothing

10.1111/j.1365-3121.2011.01012.x

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Citations (45)

The lithosphere in Italy: structure and seismicity

Journal of the Virtual Explorer (2010)

Enrico Brandmayr Reneta Raykovа Marco Zuri Fabio Romanelli Carlo Doglioni

10.3809/jvirtex.2010.00224

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Citations (24)

The Crustal Structure of the Eastern Tennessee Seismic Zone Imaged by means of Seismic Noise Tomography and Potential Fields Inversion Methods

AGU Fall Meeting Abstracts (2015)

Enrico Brandmayr P. Arroucau Ayodeji Paul Kuponiyi G. Vlahovic

Seismic Tomography

Geophysical Imaging

Seismic Noise

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Neo-deterministic seismic hazard assessment of Corsica-Sardinia block

Rendiconti lincei. Scienze fisiche e naturali (2021)

Enrico Brandmayr Franco Vaccari G. F. Panza

Abstract The Corsica-Sardinia lithospheric block is commonly considered as a region of very low seismicity and the scarce reported seismicity for the area has till now precluded the reliable assessment of its seismic hazard. The time-honored assumption has been recently questioned and the historical seismicity of Sardinia has been reevaluated. Even more, several seismogenic nodes capable of M5 + have been recognized in the Corsica-Sardinia block exploiting the morphostructural zonation technique, calibrated to earlier results obtained for the Iberian peninsula, which has structural lithospheric affinities with the Corsica-Sardinia block. All this allows now for the computation of reliable earthquake hazard maps at bedrock conditions exploiting the power of Neo Deterministic Seismic Hazard Assessment (NDSHA) evaluation. NDSHA relies upon the fundamental physics of wave generation and propagation in complex geologic structures and generates realistic time series from which several earthquake ground motion parameters can be readily extracted. NDSHA exploits in an optimized way all the available knowledge about lithospheric mechanical parameters, seismic history, seismogenic zones and nodes. In accordance with continuum mechanics, the tensor nature of earthquake ground motion is preserved computing realistic signals using structural models obtained by tomographic inversion and earthquake source information readily available in literature. The way to this approach has been open by studies focused on continental Italy and Sicily, where the agreement between hazard maps obtained using seismogenic zones, informed by earthquake catalog data, and the maps obtained using only seismogenic nodes are very good.

10.1007/s12210-021-01033-w

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Citations (4)