...Huainan Zhu; Jinli Huang Abstract We apply the graphics processing unit‐based match and locate method to detect missing small aftershocks of the 2014 M 6.4 and 5.9 Kangding double shocks (hereafter KD1 and KD2, respectively) in Sichuan, southwestern China. KD1 and KD2 occurred on two adjacent...

... surface rupture after these events exceeded 567 km, with measured permanent displacements reaching 8.8 m near Ekinözü. Within the scope of this study, probabilistic fault displacement hazard assessment was carried out for the fault sources of the 6 February 2023 double shocks. Computed displacements...

...Frank Neumann Abstract Summary Accuracy of displacement curves computed from accelerograph records by numerical double integration .—The following results were obtained from Coast and Geodetic Survey accelerograph records in shaking-table tests made at the Massachusetts Institute of Technology...

..., Dagdibi, and Kaynasli fault segments, separated by left-restraining step-overs at Beykoy and Kaynasli. To the west of the main shock, 3.5 m of average slip on the Eften fault segment propagated into the 2-km-wide Cevizlik releasing double bend, where it was largely arrested, with smaller (<0.5 m) slip...

... at a depth of 50 km in two main sources separated by ∼10 sec. The non-double-couple components values are −0.004 and −0.01 for the May and December events, respectively, indicating that the December shock has a small contribution of non-double-couple radiation that could be the result of a changing mechanism...

... waves than massive crystalline rocks show. Both Libyan structures are post-Nubian in age. Their similar degree of erosion suggests a simultaneous origin by a double impact. Geological Society of America 1974 extraterrestrial geology terrestrial impact craters shock metamorphism...

... single event location and double‐difference methods, and source time functions determined using empirical Green’s function analysis. 11 May 2013 The shock on 9 February 2010 was well recorded by more than 32 broadband seismographic stations in South Korea within the 10–390 km distance...

... the double-porosity thermoelasticity theory to interpret ultrasonic measurements on granite under water-cooling conditions. We consider an isotropic porous host embedded with fractures. A plane-wave analysis yields the classical P and S waves and three slow P waves, namely the slow (Biot) P1, the slow (Biot...

...N. N. Ambraseys abstract Between March 1965 and September 1966, two strong earthquakes occurred in central Peloponnesus (Greece). The first shock was connected with the west wall of the Megalopolis depression and it was followed by another shock connected with the opposite wall. The cumulative...

...Won-Young Kim; Savka Dineva; Shutian Ma; David Eaton Abstract A M w 3.1 earthquake occurred in Lake Ontario along the United States–Canada border, about 30 km south from Port Hope, Ontario, Canada, on 4 August 2004. Despite its small size, the shock was very well recorded by broadband seismographic...

... showed that events with m b < 4.8 were not reported consistently over time. The seismicity rate as defined by m b ≧ 4.8 events was examined quantitatively and systematically in the source volumes of three recent main shocks and within two seismic gaps. A clear case of seismic quiescence could be shown...

... IST A =64.82 ° Az =303.3 ° MAL A =87.39 ° Az=317.2 ° FBC A = 76.87 ° A Az=554'9° FIG. 11. Observed long-period P waves from the principal aftershock of the Tangshan sequence. The arrows indicate the two shocks of this double event. the large normal aftershock of the Tangshan earthquake was nearly half...

... in 2003–2004); (2) it was initiated by an M L 4.3 shock and reactivated, more than two years later, by another M L 4.8 shock with an identical epicenter but a deeper focus. We present here the corresponding data set of ∼13,000 events, of which ∼3000 were relocated using a double‐difference algorithm...

... inversion technique in which the best-fitting double-couple mechanism is obtained through a grid search over strike, dip, and rake angles. Most of the 16 events and 10 previous ones with well-determined focal mechanisms show horizontal compression with near-horizontal P axes striking northeasterly, which...