Maximum Slip Research Articles

Flexural behavior of hybrid FRP-concrete-steel double-skin tubular beams with PBL shear connectors

Hybrid fiber-reinforced polymer (FRP)-concrete-steel double-skin tubular beams (DSTBs) have a very ductile load–deflection response but may experience a relatively large slip between the concrete and the inner steel tube. Perfobond (PBL) shear connectors, which have a perforated steel plate with transverse reinforcing bars passing through the perforations, are widely used to enhance the bond performance between the concrete and the steel section for composite beams. In this study, for the first time, PBLs are employed in hybrid DSTBs to tackle the excessive slip problem. Four-point bending tests are performed on eight hybrid DSTBs with two cross-sectional shapes of inner steel tubes, two types of PBL plates, and four different PBL arrangements. Results identify that a typical load–deflection curve consists of three segments: an initial linear segment up to the yielding of steel tube bottom surface, a hardening segment, and an almost flat load plateau segment. The slips between concrete and steel tubes increase in a faster rate when yielding occurs at steel tube bottom surface. Overall, specimens with PBLs placed along the full span have the smallest slips (around 0.2 mm), whereas maximum slips occur for specimens with foams inserted at the spacings between PBLs (i.e., 2.33 and 0.59 mm for specimens with a circular and a square steel inner tube respectively). PBL shear connectors have efficiently reduced the slip, when comparing with the results of some hybrid DSTBs in previous studies.

Spatiotemporal slip distributions associated with the 2018\u20132019 Bungo Channel long-term slow slip event inverted from GNSS data

Long-term slow slip events (L-SSEs) have repeatedly occurred beneath the Bungo Channel in southwestern Japan with durations of several months to a couple of years, with a recurrence interval of approximately 6 years. We estimated the spatiotemporal slip distributions of the 2018–2019 Bungo Channel L-SSE by inverting processed GNSS time series data. This event was divided into two subevents, with the first on the southwest side of the Bungo Channel from 2018.3 to 2018.7 and the second beneath the Bungo Channel from 2018.8 to 2019.4. Tectonic tremors became active on the downdip side of the L-SSE occurrence region when large slow slips took place beneath the Bungo Channel. Compared with the previous Bungo Channel L-SSEs, this spatiotemporal slip pattern and amount were similar to those of the 2002–2004 L-SSE. However, the slip expanded in the northeast and southwest directions in the latter half of the second subevent. The maximum amount of slip, the maximum slip velocity, the total released seismic moment, and the moment magnitude of the 2018–2019 L-SSE were estimated to be 28 cm, 54 cm/year, 4.4 times 10^{19} Nm, and 7.0, respectively, all of which were the largest among the 1996–1998, 2002–2004, 2009–2011, and 2018–2019 L-SSEs.

The Source Characteristics of the Mw6.4, 2016 Meinong Taiwan Earthquake from Teleseismic Data Using the Hybrid Homomorphic Deconvolution Method

The kinematic source rupture process of the 2016 Meinong earthquake (Mw = 6.4) in Taiwan was derived from apparent source time functions retrieved from teleseismic S-waves by using a refined homomorphic deconvolution method. The total duration of the rupture process was approximately 15 s, and one slip-concentrated area can be represented as the source model based on images representing static slip distribution. The rupture process began in a down-dip direction from the fault toward Tainan City, strongly suggesting that the rupture had a unilateral northwestern direction. The asperity with an area of approximately 15 × 15 km2 and the maximum slip of approximately 2 m were centered 12.8 km northwest of the hypocenter. Coseismic vertical deformation was calculated based on the source model. Compared with the results derived from InSAR (Interferometric Synthetic Aperture Radar) data, our results demonstrated that the location with maximum uplift was accurately well detected, but our maximum value was just approximately 0.4 times of the InSAR-derived value. It reveals that there are the other mechanisms to affect the vertical deformation, rather than only depending on the source model. At different depths, areas west, east, and north of the hypocenter maintained high values of Coulomb stress changes. This explains the mechanism behind aftershocks being triggered and provides a reference for predicting aftershock locations after a large earthquake. The estimated seismic spectral intensities, including spectral acceleration and velocity intensity (SIa and SIv), were derived. Source directivity effects caused damage to buildings, and we concluded that all damaged buildings were located within a SIa value of 400 gal. Destroyed buildings taller than seven floors were located in an area with a SIv value of 30 cm/s. These observations agree with those on damages caused by the 2010 Jiasian earthquake (ML 6.4) in Tainan, Taiwan.

A novel bond stress-slip model for 3-D printed concretes

<p style='text-indent:20px;'>This paper considers the 3D printing process as a discontinuous control system and gives a simple and coherent bond stress-slip model for a new and intelligent building 3-D printed concrete. The previous models focused on either the maximal stress or the maximal slip, however, the novel model uses an energy approach by the dimension analysis, so that the main factors affecting the bond stress-slip relationship can be clearly revealed, mainly including the concrete's properties (its porous structure and its strength), the steel bar's properties (its printing direction, its strength, its surface roughness and its geometrical property) and the printing process. It is confirmed that the proposed model, similar to the constitutive relationship in elasticity, plays a key role in concrete mechanics, and it can conveniently explain the observed phenomena from the experiment.</p>

Rapid report of the 8 January 2022 ​MS 6.9 Menyuan earthquake, Qinghai, China

The MS 6.9 Menyuan earthquake in Qinghai Province, west China is the largest earthquake by far in 2022. The earthquake occurs in a tectonically active region, with a background b-value of 0.87 within 100 ​km of the epicenter that we derived from the unified catalog produced by China Earthquake Networks Center since late 2008. Field surveys have revealed surface ruptures extending 22 ​km along strike, with a maximum ground displacement of 2.1 ​m. We construct a finite fault model with constraints from InSAR observations, which showed multiple fault segments during the Menyuan earthquake. The major slip asperity is confined within 10 ​km at depth, with the maximum slip of 3.5 ​m. Near real-time back-projection results of coseismic radiation indicate a northwest propagating rupture that lasted for ∼10 ​s. Intensity estimates from the back-projection results show up to a Mercalli scale of IX near the ruptured area, consistent with instrumental measurements and the observations from the field surveys. Aftershock locations (up to January 21, 2022) exhibit two segments, extending to ∼20 ​km in depth. The largest one reaches MS 5.3, locating near the eastern end of the aftershock zone. Although the location and the approximate magnitude of the mainshock had been indicated by previous studies based on paleoearthquake records and seismic gap, as well as estimated stressing rate on faults, significant surface-breaching rupture leads to severe damage of the high-speed railway system, which poses a challenge in accurately assessing earthquake hazards and risks, and thus demands further investigations of the rupture behaviors for crustal earthquakes.

Coseismic and postseismic deformation of the 2016 Mw 6.0 Petermann ranges earthquake from satellite radar observations

Continental earthquakes, especially shallow earthquakes, can cause disasters in populated areas. On 20 May 2016, a moderate magnitude earthquake (Mw 6.0) ruptured on Northern Territory of Australia. With the aim of seismic hazard assessment, coseismic and postsesmic deformation of the Petermann earthquake has been determined using ALOS-2 ascending and Sentinel-1A descending images. The coseismic deformation field suggests that the earthquake ruptured in the NNW direction with a length of about 20 km, a rake angle of 57.1° and a moment magnitude of Mw 6.06. The maximum slip of 1.31 m can be observed at the depth of 1.25 km. The small baseline subset (SBAS) InSAR was utilized to obtain the postseismic deformation from 69 Sentinel-1A images in a descending orbit. The spatiotemporal evolution of the postseismic deformation presents a gradually decaying trend, with a maximum displacement of 5.4 cm within 858 days after the mainshock. Our afterslip model suggests that the maximum slip of 0.28 m occurred at the depth of 0.25 km with a slight shift to the northwest compared to the coseismic slip. The static Coulomb failure stress (CFS) changes at various depths were calculated, indicating the consistency between high loaded stress zones and aftershock distribution.

Simulation and analysis of temperature characteristics of a dual-coil magnetorheological brake

In this paper, the temperature characteristics of a dual-coil magnetorheological (MR) brake have been studied by theoretical analysis and finite element simulation. Firstly, the mathematical model of the temperature field of the MR brake is established based on the analysis of the heat source. Then, the temperature field simulation analysis under steady-state and transient operation has been conducted. From the simulation, the maximum slip power of MR brake under steady-state conditions is obtained. Under slip operation, the temperature in MR fluid working gaps of the dual-coil MR brake rises rapidly. The research results can provide a reference for the research of heat dissipation technology of MR brakes.

Co- and post-seismic slip analysis of the 2017 MW7.3 Sarpol Zahab earthquake using Sentinel-1 data

The MW7.3 Sarpol Zahab earthquake that occurred in the Zagros Fold-Thrust Belt (ZFTB) of Iran on November 12, 2017 is the largest earthquake instrumentally recorded in the region. This earthquake provides an opportunity to investigate the slip behaviour and frictional properties of the fault, which is significant for assessing future seismic potential. In this study, we use Sentinel-1 images to map the co- and post-seismic deformation to invert for the fault slip. The result indicates that most of the coseismic slip is buried in the depth range of 11–17 km, and the maximum slip is about 3.8 m at a depth of 15 km. The coseismic slip induces an increase of Coulomb stress in the unruptured area of the seismogenic fault plane, driving the afterslip. Based on the stress-driven afterslip, we obtain a frictional parameter of (a − b) = (0.001 − 0.002) for the updip afterslip zone and (a − b) = 0.0002 for the downdip afterslip zone in the framework of rate-and-state friction. The constitutive parameter (a − b) of the fault is very small, suggesting that the fault segments are close to velocity-neutral and may experience coseismic rupture.

Shear performance of MWCNTs modified single-lap joints of glass/epoxy laminates

In this experimental work, the single lap joint (SLJ) adhesive strength of glass fibre reinforced epoxy (GFRP) composites was investigated under quasi-static tensile loading. The adhesive used was 'Araldite® adhesives-2015 (AA)'. Further, the functionalized multiwall carbon nanotubes (s-MWCNTs) were used to modify the AA. The s-MWCNTs were mixed in AA through the ultrasonication method at six weight ratios, i.e. 0, 0.25, 0.5, 0.75, 1 and 1.25 wt. %. Experimental results showed that among different weight fractions of s-MWCNTs modified AA, the 1 wt. % of s-MWCNTs reinforcement yielded a maximum bond strength and slip. The two-parameter Weibull statistical method proved that the results for increasing s-MWCNTs in AA were reliable up to 1 wt. % s-MWCNTs doping. Strain-field analysis at bond-edge by using digital image correlation (DIC) technique showed a significant variation with s-MWCNTs reinforcement in strain distributions at bonded edge-section. Fracture behaviour analysis at the macroscopic and microscopic proved that with the rise in uniformly distributed s-MWCNTs, bridging (or interlocking mechanism) occurs, which hindered the bond failure. Further, above the optimized value of s-MWCNTs reinforcement, i.e. 1.25 wt. % of s-MWCNTs in AA; an agglomeration of s-MWCNTs took place, reducing the bond performance.

Effect of skimming layer in an electroosmotically driven viscoelastic fluid flow over charge modulated walls

We report a numerical study on the effect of the skimming layer in an EOF of Oldroyd-B fluid over charge modulated walls. Three types of flow conditions were identified on the basis of the relative thickness of the skimming layer and the electrical double layer. We observe maximum slip velocity magnitude when the skimming layer thickness is very less than the thickness of the electrical double layer. For higher skimming layer thickness compared to the thickness of electrical double layer, slip velocity magnitude attenuates, and the polymeric stress inside the skimming layer becomes zero. Enhanced fluid elasticity generates asymmetric flow structures inside the microchannel, which can also be achieved by imposing an asymmetric surface charge along the channel walls. Our present analysis highlights the complex flow dynamics of the EOF of biofluids/polymeric fluids with a near-wall region depleted of macro-molecules.

The droplets and film behaviors in supersonic separator by using three-field two-fluid model with heterogenous condensation

Supersonic separator is a kind of natural gas dehydration device with great potential, but its internal mass and heat transfer process has not been fully studied. In this study, a novel three-field two-fluid model described by Eulerian-Eulerian approach for supersonic separator considering the heat and mass transfer between gas, liquid droplets, and liquid film was developed and validated. The interphase slip, latent heat, film heat flux, and film phase change rate were studied. It revealed that the maximum centrifugal slip velocity of droplets can reach 24.9 m s−1. The maximum latent heat is 5.3 × 108 J m−3 from droplets to gas phase during condensation, and the minimum latent heat is -3.4 × 108 J m−3 during evaporation. The thickness of swirling liquid film at wet gas outlet is 21 μm, 47 μm, 74 μm and 89 μm, respectively. The liquid film temperature decreases to a minimum 304.1 K due to droplets deposition, where the maximum heat flux is 0.74 MW m−2. Besides, the frequency and velocity of the interfacial wave of liquid film were obtained by using the cross-correlation algorithm, and their maximum values was 11.07 Hz and 1.49 m s−1, respectively. In addition, for achieving higher dehydration efficiency, the optimal value of the foreign droplet mass concentration should be 0.01 kg m−3. The maximum separation efficiency and dew point depression of separator A are 85.11% and 40.32 °C, respectively. The model without considering the liquid film over-predicts the separation efficiency.

Analysis of skeleton contact stability of graded aggregates system and its effect on slip creep properties of asphalt mixture

Geometric characteristics are the essential properties of aggregates, which form the gradation skeleton through contact effect among aggregates and further affect the deformation characteristics of asphalt mixture. In this investigation, the skeleton contact stability of graded aggregate system was evaluated and the slip creep properties of asphalt mixture were analyzed from the geometric characteristics of aggregates. First, the skeleton stability index (SSI) was constructed with the geometric characteristics of aggregates based on the idea of variable weight, and the effectiveness of SSI in representing the skeleton contact stability was verified by the maximum slip force (Fm). Secondly, the interface slip creep test of asphalt mixtures were performed, a quantitative model with three-stage of creep deformation was put forward to calculate the deformation in each stage, and the migration creep rate (SM), steady-state creep rate (SS) and creep life (FT) were proposed to characterize the slip creep properties of asphalt mixture. Finally, the effect of skeleton contact stability of graded aggregate system on the slip creep properties of asphalt mixture was analyzed. The results indicate that SSI has a good correlation with Fm, which can effectively characterize the skeleton contact stability of graded aggregate system, and a larger SSImeans a bigger skeleton contact stability. According to the deformation mechanism, the deformation behavior of asphalt mixture was divided into instantaneous elasticity, migration creep, steady-state creep and creep failure stage. Among them, SMdetermines the deformation level of asphalt mixture, SSreflects the deformation potential of asphalt mixture, and FT embodies the creep length of asphalt mixture. In migration creep stage, the slippage of aggregate induces asphalt mortar to flow; while in steady-state creep stage, the flow of asphalt mortar drives the aggregate to slip. The aggregate slippage and asphalt mortar flow promote and superimpose each other, resulting in the deformation of asphalt mixture.

The 2019-2020 Khalili (Iran) Earthquake Sequence-Anthropogenic Seismicity in the Zagros Simply Folded Belt?

We investigate the origin of a long‐lived earthquake cluster in the Fars arc of the Zagros Simply Folded Belt that is colocated with the major Shanul natural gas field. The cluster emerged in January 2019 and initially comprised small events of M n ∼ 3–4. It culminated on 9 June 2020 with a pair of M w 5.4 and 5.7 earthquakes, which was followed by >100 aftershocks. We assess the spatiotemporal evolution of the earthquake sequence using multiple event hypocenter relocations, waveform inversions, and Sentinel‐1 Interferometric Synthetic Aperture Radar (InSAR) measurements and models. We find that the early part of the sequence is spatially distinct from the 9 June 2020 earthquakes and their aftershocks. Moment tensors, centroid depths, and source parameter uncertainties of 15 of the largest (M n ≥ 4.0) events show that the sequence is dominated by reverse faulting at shallow depths (mostly ≤4 km) within the sedimentary cover. InSAR modeling shows that the M w 5.7 mainshock occurred at depths of 2–8 km with a rupture length and maximum slip of ∼20 km and ∼0.5 m, respectively. Our results suggest that the 2019–2020 Khalili earthquake sequence was likely influenced by operation of the Shanul field, though elevated natural seismicity in the Zagros makes the association difficult to prove. Understanding how to distinguish man‐made from natural seismicity is helpful for hazard and risk assessment, notably in the Zagros, which is both seismically active and rich in oil and gas reserves.

Dynamic Rupture Simulations of the 2008 7.9 Wenchuan Earthquake: Implication for Heterogeneous Initial Stress and Complex Multifault Geometry

AbstractThe 2008 Mw7.9 Wenchuan earthquake ruptured northwest‐dipping imbricate oblique reverse faults along the Longmenshan thrust belt at the eastern margin of the Tibetan Plateau, and developed one of the most complex coseismic rupture patterns for reverse faulting events ever reported in intraplate settings. To evaluate to what extent complex fault geometry and heterogeneities in initial stress can explain the characteristics of coseismic observations, we simulate spontaneous dynamic rupture propagation governed by slip‐weakening friction law on the geometrically complex multifault system loaded by heterogeneous stress. Our model reproduces many observed features including the multifault ruptures, locations of the maximum slip, Interferometric Synthetic Aperture Radar observations, source time functions and peak ground velocities. Our results suggest that the maximum horizontal principal stress in the northern part of Beichuan Fault (BFC) is rotated approximately counterclockwise compared to that in the southern part of BFC, yet this rotation is not sufficient to produce a supershear rupture. We infer that the fault core zone in the southwestern Beichuan Fault (BCF) may have been more severely damaged than the northeastern counterpart, which provides an explanation that the rupture in the northern BCF propagates faster than in the southern portion. Besides, we find that Coulomb failure stress changes on Wenchuan‐Maoxian Fault (WMF) may be counteracted by the aftershock slips of the Lixian Fault, which suggests Wenchuan earthquake could not significantly push the WMF closer to failure.

The May 15, 2020 M 6.5 Monte Cristo Range, Nevada, earthquake: eyes in the sky, boots on the ground, and a chance for students to learn

ABSTRACT The M 6.5 earthquake that occurred in the Monte Cristo Range near Mina, Nevada on 15 May 2020 was exceptionally well-recorded with both seismic and geodetic instrumentation. The arid nature of the region also facilitated detailed ground mapping of the surface rupture. Here we integrate several independent data sets to illustrate the educational and research opportunities afforded by these rich data sets. We construct a series of models for slip at depth that are consistent with the satellite-derived geodetic data, the distribution of aftershocks, and the mapped surface rupture. We also show that the modelled depth of maximum slip is in good agreement with heat flow and laboratory data on quartz rheology defining the depth of the brittle-ductile transition. The Monte Cristo Range earthquake also suggests new approaches to seismic hazard assessment may be required for earthquakes in rapidly evolving tectonic regions such as the Walker Lane and Eastern California shear zone.

Development of microstructure-sensitive damage models for zirconium polycrystals

The incorporation of four different microstructure-sensitive damage mechanisms into a crystal plasticity finite element model is described in detail. The nucleation and propagation of cracks are based on (1) the local principal stress and normal to the corresponding principal plane, (2) the local principal plastic strain and normal to the corresponding principal plane, (3) the local maximum slip and normal to the predominant slip system, and (4) the energy stored in dislocations and normal to the predominant slip system. To study the performance of each model in predicting crack nucleation and propagation, the “as-measured” microstructure in the vicinity of a sharp notch in a pure zirconium specimen is imported into the crystal plasticity model. The numerical results are compared with those measured by the electron backscatter diffraction technique. This is followed by a numerical study of the effects of crystal orientation on the prediction of each model for a notched single crystal zirconium specimen. For the specimen texture studied here, results show that the principal stress and the maximum slip methods can correctly predict the location of major cracks, where only the latter replicates the correct direction of crack propagation. Predictions from the energy method or the principal plastic strain method mainly coincide with the minor cracks or those that propagate at higher applied strains.

Long-lived afterslip of the 2013Mw 6.1 Minab earthquake detected by Persistent Scatterer Interferometry along the Irer fault (western Makran-Zagros transition zone, Iran)

SUMMARYThe ratio of seismogenic to aseismic deformation along active faults is needed to estimate their seismogenic potential and hazards. Seismologic and geodetic methods routinely capture coseismic displacements, but data acquisition requirements to fully document post-seismic deformation are not well known. Our study documents afterslip between about 18 months and 4 years after a mid-size earthquake and, based on remote structural mapping, we document fault rupture segments not previously associated with that earthquake. Persistent scatterer interferometric analysis of Sentinel-1A aperture radar data acquired between October 2014 and December 2018 reveals prolonged post-seismic deformation following the 11 May 2013 Mw 6.1 Minab earthquake and its aftershocks. The surface deformation data yield a sharp contrast across both the main seismogenic fault (here named the Irer fault) and its northeastern splay, and it is compatible with left-lateral motion along both faults. The PSI data helped us to identify and map the splay fault in the satellite imagery. We could then measure the geological offset along both faults, finding maximum displacements of about 1 km (main fault) and 350 m (splay). Our modelling of the observed post-seismic surface deformation pattern shows that post-seismic deformation was accommodated by left-lateral afterslip, not viscoelastic relaxation. This result is consistent with previous propositions that Mw 6 earthquakes do not measurably excite deeply seated viscoelastic relaxation mechanisms. Our afterslip modelling yields a slip pattern from the surface to a depth of 6 km to maximum 16 km, in agreement with the depth of the coseismic slip-distribution, and a maximum displacement of ∼7 cm along the fault, but located ∼8 km to the east of the coseismic slip maximum. Moment release during the observed afterslip in our study is Mw 5.7, or 12% of the coseismic moment released by main shock and aftershocks together. Combined with previously published results for the early post-seismic period (first 2 months), we estimate the aseismic moment to be at least ∼37% of the total, implying a high ratio of aseismic to seismic moment release for the Irer fault. Our results show that observation time windows well beyond 5 years are needed to record afterslip following mid-sized earthquakes. Thus, progress in understanding the transition from post-seismic to interseismic fault behaviour critically depends on the availability of data provided by satellite missions such as Copernicus Sentinel-1A. Similarly, robust comparison of the post-seismic rates with long-term geological rates requires palaeoseismic study and dating of related morphotectonic features.

GPS determined coseismic slip of the 2021Mw7.4 Maduo, China, earthquake and its tectonic implication

SUMMARYThe 2021 Mw7.4 Maduo earthquake occurred on the Jiangcuo fault within the Bayan Har block in eastern Tibet. It is a rather unique event and attests that large earthquakes can occur in the interior of major tectonic blocks within the Tibetan plateau. By processing GPS data observed in the eastern Tibet region, we produce a data set documenting 3-D coseismic displacements of the Maduo earthquake. Using the data set to constrain a coseismic slip model, we find that the earthquake ruptured a nearly vertical fault about 170 km in length, with ∼90% of the moment released in the shallow layer above 20 km depth. The maximum slip of ∼3.6 m occurred near the surface around a bend in the east segment of the fault. The overall seismic moment release is 1.82 × 1020 N m and is equivalent to Mw7.4. Driven by the eastward extrusion of the Tibetan plateau, the deformation field in eastern Tibet is dominated by left-lateral shear, with the strikes of the tectonic faults rotating clockwise from west to east along with the shear stress orientation. This deformation pattern explains the mechanisms of earthquakes along block boundary faults, as well as the ones on faults within the blocks. The Jiangcuo fault is located ∼70 km south of the East Kunlun fault and could be connected to the Kunlun Mountain Pass fault to its WNW that ruptured during the 2001 Kokoxili earthquake, and a seismic gap of ∼240 km long between the two faults is worth special attention for its increased earthquake potential.

Coseismic and Early Postseismic Deformation Due to the 2021 M7.4 Maduo (China) Earthquake

AbstractThe 2021 Maduo earthquake ruptured a 150 km‐long left‐lateral fault in the northeast Tibet. We used Synthetic Aperture Radar data collected by the Sentinel‐1A/B satellites within days of the earthquake to derive a finite fault model and investigate the details of slip distribution with depth. We generated coseismic interferograms and pixel offsets from different look directions corresponding to the ascending and descending satellite orbits. At the eastern end the rupture bifurcated into two sub‐parallel strands, with larger slip on the northern strand. Inversions of coseismic displacements show maximum slip to the east of the epicenter. The averaged coseismic slip has a peak at depth of 3–4 km, similar to slip distributions of a number of shallow strike‐slip earthquakes. Postseismic observations over several weeks following the Maduo earthquake reveal surface slip with amplitude up to 0.1 m that at least partially eliminated the coseismic slip deficit in the uppermost crust.

The 30 October 2020, MW = 7.0, Samos earthquake: aftershock relocation, slip model, Coulomb stress evolution and estimation of shaking

We study the major MW = 7.0, 30 October 2020, Samos earthquake and its aftershocks, by calculating improved locations using differential travel times and waveform cross-correlations. We image the rupture of the mainshock using local strong motion data, and we examine the Coulomb stress evolution prior to the mainshock, as well as the coseismic stress changes. Lastly, we estimate the produced shaking using all the available information from strong motion data and testimonies. Earthquake relocations reveal the activation of the E-W oriented Kaystrios fault, in the North basin of Samos with a possible extension to the West. The kinematic rupture inversion suggests non-uniform bilateral rupture on a ∼60 km × ∼20 km fault area, with the main rupture propagating towards the West and maximum slip up to approximately 2.5 m. Improved locations of the aftershock sequence are anti-correlated with areas of maximum slip on the fault surface. Similarly, the Coulomb stress change calculations show that only off-fault earthquake clusters are located within lobes of increasing positive static stress changes. This observation is consistent with assuming a fault area of either uniform slip, or variable slip according to the obtained slip model. Both scenarios indicate typical stress patterns for a normal fault with E-W orientation, with stress lobes of positive ∆CFF increments expanding in E-W orientation. In the case of the variable slip model, both negative and positive stress changes show slightly larger values compared to the uniform slip model. Finally, Modified Mercalli Intensities based on the fault model obtained in this study indicate maximum intensity (VII +) along the northern coast of Samos Ιsland. Spectral acceleration values at 0.3 s period also demonstrate the damaging situation at Izmir.