Gerald Roberts
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View article: Consistency Between the Slip History Implied by in Situ <sup>36</sup> Cl Exposure Dating on an Active Normal Fault and the Timing of Holocene Coastal Notch Formation, Central Greece
Consistency Between the Slip History Implied by in Situ <sup>36</sup> Cl Exposure Dating on an Active Normal Fault and the Timing of Holocene Coastal Notch Formation, Central Greece Open
We report agreement between the timing of slip on an active normal fault recovered from in situ 36 Cl cosmogenic fault scarp dating with independently 14 C dated Holocene coastal notches deformed along the strike of the fault, reinforcing …
View article: Millennial Slip‐Rates Variability of Along‐Strike Active Faults in the Italian Southern Apennines Revealed by Cosmogenic <sup>36</sup>Cl Dating of Fault Scarps
Millennial Slip‐Rates Variability of Along‐Strike Active Faults in the Italian Southern Apennines Revealed by Cosmogenic <sup>36</sup>Cl Dating of Fault Scarps Open
We present slip versus time histories derived from in situ 36 Cl cosmogenic dating for three active normal faults in the southern Apennines, Italy. In this region the total extensional strain is accommodated by either a small number of fau…
View article: Using fracture-scarp lineations as kinematic indicators on active normal fault scarps
Using fracture-scarp lineations as kinematic indicators on active normal fault scarps Open
Reliable kinematic (slip vector) data collected from offset piercing points, corrugations or striations, is a key input for fault based seismic hazard assessments. However, it can be difficult to interpret kinematic indicators on degraded …
View article: Tectonic implications of raised Quaternary relative sea‐level indicators along the NE border of the Campania Plain (southern Italy)
Tectonic implications of raised Quaternary relative sea‐level indicators along the NE border of the Campania Plain (southern Italy) Open
Tectonically raised paleoshorelines have been recently identified along the southern fault scarps of the Mt. Fellino and Roccarainola horst blocks, which are part of the northeastern border of the Campania Plain coastal basin (southern Ape…
View article: Transient Aseismic Vertical Deformation Across the Steeply‐Dipping Pisia‐Skinos Normal Fault (Gulf of Corinth, Greece)
Transient Aseismic Vertical Deformation Across the Steeply‐Dipping Pisia‐Skinos Normal Fault (Gulf of Corinth, Greece) Open
Geodetically‐derived deformation rates are sometimes used to infer seismic hazard, implicitly assuming that short‐term (annual‐decadal) deformation is representative of longer‐term deformation. This is despite geological observations indic…
View article: The relationship between kinematics and fault geometry for surface coseismic ruptures on across-strike faults: New observations of slip vectors and displacements along the Pisia and Skinos faults from the 1981 Eastern Gulf of Corinth, Greece earthquakes
The relationship between kinematics and fault geometry for surface coseismic ruptures on across-strike faults: New observations of slip vectors and displacements along the Pisia and Skinos faults from the 1981 Eastern Gulf of Corinth, Greece earthquakes Open
The relationships between kinematics and fault geometry for the coseismic ruptures from the 24th and February 25, 1981 earthquake sequence in the eastern Gulf of Corinth (Ms 6.7 and 6.4) are analysed. The two earthquakes ruptured faults lo…
View article: Spatial migration of temporal earthquake clusters driven by the transfer of differential stress between neighbouring fault/shear-zone structures
Spatial migration of temporal earthquake clusters driven by the transfer of differential stress between neighbouring fault/shear-zone structures Open
Uncertainty concerning the processes responsible for slip-rate fluctuations associated with temporal clustering of surface faulting earthquakes is a fundamental, unresolved issue in tectonics, because strain-rates accommodated by fault/she…
View article: Transient aseismic vertical deformation during the interseismic cycle across the Pisia-Skinos normal fault (Gulf of Corinth, Greece)
Transient aseismic vertical deformation during the interseismic cycle across the Pisia-Skinos normal fault (Gulf of Corinth, Greece) Open
Loading and deformation during the interseismic period of the earthquake cycle is often considered to be constant for continental faults, therefore assuming that the short-term (annual-decadal) deformation is representative of longer-term …
View article: Characteristics of slip-rate variability and temporal earthquake clustering across a distributed network of active normal faults from in situ 36Cl cosmogenic dating of fault scarp exhumation.
Characteristics of slip-rate variability and temporal earthquake clustering across a distributed network of active normal faults from in situ 36Cl cosmogenic dating of fault scarp exhumation. Open
We present an in situ 36Cl dataset recording the exhumation of 27 active normal fault planes by earthquake slip for the central Apennines, Italy. We do this to constrain the characteristics of earthquake clustering and anticlustering acros…
View article: Empirical scaling correlations between fault lengths and fault slip-rates in seismically-active extensional regions: The Calabria and Messina Strait region (southern Italy) as case study
Empirical scaling correlations between fault lengths and fault slip-rates in seismically-active extensional regions: The Calabria and Messina Strait region (southern Italy) as case study Open
In this study, we present scaling relationships between fault lengths, fault slip-rates and historical seismicity for an active normal fault system, seismically accommodating crustal extension within the upper plate of the Ionian subductio…
View article: Using fracture-scarp lineations as kinematic indicators on active normal fault scarps
Using fracture-scarp lineations as kinematic indicators on active normal fault scarps Open
To undertake fault-based seismic hazard assessment, we need to accurately identify source faults and assess their slip-rate and kinematics through pertinent data collection. For example, converging slip vectors may be used to deduce whethe…
View article: Deformed Holocene coastal notches reinforce the validity of earthquake slip histories implied by in-situ 36Cl exposure fault scarp dating.
Deformed Holocene coastal notches reinforce the validity of earthquake slip histories implied by in-situ 36Cl exposure fault scarp dating. Open
We report the first example where the timing of earthquake slip from in situ 36Cl cosmogenic exposure dating of an active normal fault scarp can be verified using independently 14C dated Holocene coastal notches which are deformed along th…
View article: Influence of fault system geometry and slip rates on earthquake triggering and recurrence variability, insights from Coulomb stress interactions during historical earthquake sequences in Italy
Influence of fault system geometry and slip rates on earthquake triggering and recurrence variability, insights from Coulomb stress interactions during historical earthquake sequences in Italy Open
We investigate the Coulomb stress changes due to 30 strong earthquakes occurring on normal faults since 1509 A.D. in Calabria, Italy, including the influence of both coseismic and interseismic loading in our modelling. We compare the resul…
View article: Transient aseismic vertical deformation across the Pisia-Skinos normal fault (Gulf of Corinth, Greece)
Transient aseismic vertical deformation across the Pisia-Skinos normal fault (Gulf of Corinth, Greece) Open
Geodetically-derived deformation rates are sometimes used to infer seismic hazard, implicitly assuming that short-term (annual-decadal) deformation is representative of longer-term deformation. This is despite geological observations indic…
View article: Influence of Fault System Geometry and Slip Rates on the Relative Role of Coseismic and Interseismic Stresses on Earthquake Triggering and Recurrence Variability
Influence of Fault System Geometry and Slip Rates on the Relative Role of Coseismic and Interseismic Stresses on Earthquake Triggering and Recurrence Variability Open
We model Coulomb stress transfer (CST) due to 30 strong earthquakes occurring on normal faults since 1509 CE in Calabria, Italy, including the influence of interseismic loading, and compare the results to existing studies of stress interac…
View article: QUIN 2.0 - new release of the QUaternary fault strain INdicators database from the Southern Apennines of Italy
QUIN 2.0 - new release of the QUaternary fault strain INdicators database from the Southern Apennines of Italy Open
This database relates to the paper “QUIN 2.0 - new release of the QUaternary fault strain INdicators database from the Southern Apennines of Italy”, by: Giusy Lavecchia1,2, Simone Bello1,2*, Carlo Andrenacci1,2, Daniele Cirillo1,2, Federic…
View article: QUIN 2.0 - new release of the QUaternary fault strain INdicators database from the Southern Apennines of Italy
QUIN 2.0 - new release of the QUaternary fault strain INdicators database from the Southern Apennines of Italy Open
This database relates to the paper “QUIN 2.0 - new release of the QUaternary fault strain INdicators database from the Southern Apennines of Italy”, by: Giusy Lavecchia1,2, Simone Bello1,2*, Carlo Andrenacci1,2, Daniele Cirillo1,2, Federic…
View article: Quaternary uplift of palaeoshorelines in southwestern Crete: the combined effect of extensional and compressional faulting
Quaternary uplift of palaeoshorelines in southwestern Crete: the combined effect of extensional and compressional faulting Open
We undertake spatio-temporal analysis on sequences of Pleistocene palaeoshorelines in southwestern Crete where deformed Holocene marine notches have predominantly been suggested to be linked to coseismic uplift from the 365 CE Mw > 8 ea…
View article: Issue Information
Issue Information Open
Aims and ScopeTerra Nova publishes short, innovative and provocative papers of interest to a wide readership and covering the broadest spectrum of the Solid Earth and Planetary Sciences.Terra Nova encompasses geology, geophysics
View article: Influence of fault system geometry and slip rates on the relative role of coseismic and interseismic stresses on earthquake triggering and recurrence variability
Influence of fault system geometry and slip rates on the relative role of coseismic and interseismic stresses on earthquake triggering and recurrence variability Open
Supporting information for "Influence of fault system geometry and slip rates on the relative role of coseismic and interseismic stresses on earthquake triggering and recurrence variability"
View article: Influence of fault system geometry and slip rates on the relative role of coseismic and interseismic stresses on earthquake triggering and recurrence variability
Influence of fault system geometry and slip rates on the relative role of coseismic and interseismic stresses on earthquake triggering and recurrence variability Open
Supporting information for "Influence of fault system geometry and slip rates on the relative role of coseismic and interseismic stresses on earthquake triggering and recurrence variability"
View article: The performance of differential point positioning using low-cost GNSS in comparison to DInSAR for monitoring coseismic displacement of the Provenzana–Pernicana fault system (Mt. Etna, 2018 December eruptive phase)
The performance of differential point positioning using low-cost GNSS in comparison to DInSAR for monitoring coseismic displacement of the Provenzana–Pernicana fault system (Mt. Etna, 2018 December eruptive phase) Open
SUMMARY Mt. Etna is a perfect laboratory for testing new approaches and new technologies in a very active geodynamic environment. It offers, in fact, the opportunity for measuring active crustal deformation, related to volcanic activity as…
View article: Linking surface deformation with lower crustal shear zones: insights into drivers of millennial-scale earthquake clustering and time-dependent seismic hazard
Linking surface deformation with lower crustal shear zones: insights into drivers of millennial-scale earthquake clustering and time-dependent seismic hazard Open
Surface faulting earthquakes are known to cluster in time from historical and palaeoseismic studies in multiple active tectonic settings, including central Greece, southern California and central Italy. However, the mechanism(s) responsibl…
View article: Normal faulting interaction revealed by out-of-phase Quaternary uplift-rate changes implied by studying deformed marine terraces
Normal faulting interaction revealed by out-of-phase Quaternary uplift-rate changes implied by studying deformed marine terraces Open
We have mapped and refined the chronology of raised and tectonically deformed Middle-Upper Pleistocene marine terraces in the Messina Strait, southern Italy, within the upper plate affected by crustal extension above the Ionian Subduction …
View article: Repeated, Cross‐Cutting, and Spatially Migrating Outflow Channel Formation, Grjótá Valles, Mars
Repeated, Cross‐Cutting, and Spatially Migrating Outflow Channel Formation, Grjótá Valles, Mars Open
Cross‐cutting relationships and the incision history for multiple outflow channels have been mapped and studied to establish their relative chronology in Grjótá Valles, Mars, in order to establish whether observed geomorphic channels were …
View article: Out of phase Quaternary uplift-rate changes reveal normal fault interaction, implied by deformed marine palaeoshorelines
Out of phase Quaternary uplift-rate changes reveal normal fault interaction, implied by deformed marine palaeoshorelines Open
We have mapped and constrained the timing of tectonically deformed uplifted Late Quaternary palaeoshorelines in the Messina Strait, southern Italy, an area above a subduction zone containing active normal faults. The palaeoshorelines are p…