Renier Viltres

New InSAR and seismology analysis of the 1995 Aigion Mw 6.2 earthquake (Greece)

Marella Parnas, Renier Viltres, Carolina Pagli, Derek Keir et autres

As early rifts initiate and evolve, different fault geometries and kinematics may form. In particular, it is debated at what stage low–angle normal faulting can develop in continental rifts. Addressing this debate requires a thorough exploration of the variability and uncertainties of …

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Very-long-range dynamic triggering of mud volcano unrest and silent magnitude-6 fault slip

Zaur Bayramov, Renier Viltres, Cécile Doubre, Alessia Maggi et autres

Seismic waves from large earthquakes are known to trigger slip on distant faults, but the underlying mechanisms remain unclear. Using interferometric synthetic aperture radar and local geodetic and seismic data, we show that the 1000-kilometer-distant, February 2023 Kahramanmaraş earthquakes in southeastern Türkiye …

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Interseismic deformation of the Húsavík–Flatey fault (North Iceland) from two decades of GNSS data

Alejandra Barreto, Renier Viltres, Rémi Matrau, Sabrina Metzger et autres

SUMMARY The Tjörnes Fracture Zone in North Iceland is one of two transform zones in Iceland capable of generating earthquakes of magnitude $\sim$7. More than 150 years have passed since the last two major earthquakes occurred on the Húsavík–Flatey fault, one of …

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The most significant earthquake sequence in North Iceland for almost 50 years

Alejandra Barreto, Renier Viltres, Kristín Jónsdóttir, Sigurjón Jónsson

The Tjörnes Fracture Zone (TFZ) in North Iceland links the offshore Kolbeinsey Ridge to the onshore Northern Volcanic Zone. About 98% of the seismicity in the TFZ concentrates along the Húsavík-Flatey Fault (HFF), a ~120-km-long right-lateral strike-slip fault, and the Grímsey Oblique …

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,000-km distant dynamic triggering of large aseismic fault slip and mud volcano unrest in the Eastern Caucasus

Zaur Bayramov, Renier Viltres, Cécile Doubre, Alessia Maggi et autres

Dynamic triggering of local seismicity or slow-slip events by large earthquakes over vast distances is a well-documented phenomenon. Using satellite radar interferometry (InSAR) and seismic data, we identified a significant aseismic deformation signal in the Eastern Kura Basin, situated between the Lesser …

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Aseismic creep and strain partitioning accommodating the Nubia-Eurasia oblique convergence in northern Africa from InSAR analysis

Renier Viltres, Cécile Doubre, Marie‐Pierre Doin, Frédéric Masson

Abstract The northern Africa region faces significant seismic and tsunami hazards, driven by the ongoing convergence between the Nubian and Eurasian plates. Using radar interferometry (interferometric synthetic aperture radar, InSAR) analysis, we provide constraints on the interseismic behavior of tectonic structures within …

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Supplemental Material: Aseismic creep and strain partitioning accommodating the Nubia-Eurasia oblique convergence in northern Africa from InSAR analysis

Renier Viltres, et al.

Detailed information on the data processing workflow and modeling leading to our results and conclusions.

Supplemental Material: Aseismic creep and strain partitioning accommodating the Nubia-Eurasia oblique convergence in northern Africa from InSAR analysis

Renier Viltres, et al.

Detailed information on the data processing workflow and modeling leading to our results and conclusions.

Present-day crustal deformation of the Caucasus and Northern Iran constrained by InSAR time series

Zaur Bayramov, Renier Viltres, Cécile Doubre, Alessia Maggi et autres

The Caucasus and Northern Iran lie within the central part of the Alpine-Himalayan belt, where the Arabian and Eurasian plates started colliding over 100 My ago and caused the building of mountain chains associated with complex tectonics, including transform faulting systems. The …

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Low-angle normal faulting triggered by fluids

Carolina Pagli, Alessandro La Rosa, Derek Keir, Gareth Hurman et autres

In extensional settings under Andersonian mechanics, low-angle normal faults should not form in favour of steeply dipping normal faults. However, InSAR shows that a seismic sequence including an earthquake with magnitude Mw 5.6 on August 1st, 2023 (NEIC - National Earthquake Information …

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Active deformation within the slow-straining northernmost Africa region constrained by InSAR time-series

Renier Viltres, Cécile Doubre, Marie‐Pierre Doin, Frédéric Masson

The present-day tectonics of the northernmost Africa region is dominated by the oblique convergencebetween the Nubia and Eurasia plates initiated 35 Ma ago. GNSS-derived velocities indicate that therelative plate motion of only ~5 mm/yr is accommodated within a wide region involving inlandand …

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Interseismic deformation in the Tjörnes Fracture Zone, North Iceland from GNSS measurements

Alejandra Barreto, Renier Viltres, Rémi Matrau, Benedíkt G. Ófeigsson et autres

The Tjörnes Fracture Zone poses significant seismic hazard to the town of Húsavík and other nearby coastal communities in North Iceland as it is capable of generating earthquakes of magnitude ~7. The 120 km long offset connects the offshore Kolbeinsey Ridge to …

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