eltanin fracture zonepolyblend vs polyblend plus grout
Their surface wave magnitudes, Ms, for events before 1969 along the Eltanin system were determined typically from one to a few stations. "zone of fracture" in Chinese : , ; ; ,; ; "fracture system" in Chinese : ; "amsterdam fracture zone" in Chinese : M. None of our normal-faulting solutions are found adjacent to that part of the Tharp transform. Wilson (1965) utilized the observation that earthquakes along the Eltanin fracture zone were confined to the zone between two offset ridge crests in formulating his hypothesis of transform faulting. Their poorly determined repeat times range from 13 to 24 yr. We assume that earthquakes along a given segment of a transform occur on single faults although the distribution of CMT solutions scatters about 15 km perpendicular to the transforms. The CMT locations for the Heezen and Hollister transforms and the eastern end of the Tharp are biased to the south of the bathymetric expression of the transforms (Fig. P. 3315km (2060mi) WSW of Punta Arenas, Chile They find that aftershock zones of nearby pairs of moderate-size earthquakes along fast-moving transforms were separated by small spreading centres. No known large earlier events can be readily attributed to the segment between 122 and 141 km in Fig. The three sets of large events have a repeat time of 13 yr and a COV of 0.13. (2009). Rolandone In that simple model, earthquakes should extend to greater depths and presumably be larger near the centres of transforms, which is clearly not the case for the Heezen and Tharp faults. 4706 km S of Papeete, French Polynesia / pop: 26,400 / local time: 01:42:15.1 2017-06-15 C1. These depths are similar to those determined by Wolfe et al. D.W. Ryan and M. Tolstoy for helpful discussions. We find or confirm two anomalous characteristics: the . 5) are characterized by shocks of Mw= 5.9 but about half of its length is not. The excitation of the long-period waveforms used in the CMT analysis does not vary rapidly as a function of source depth for shallow-focus earthquakes. Okal & Langenhorst (2000) relocated a number of earthquakes along the three transforms using short-period body waves. The segment near the eastern end of the Heezen transform between 179 and 200 km (Fig. LOUISVILLE RIDGE AND ELTANIN FRACTURE ZONE 3053 west to isolated peaks superimposed on ridge segments in the southeast. west coast of the USA through California. R.G. M. E.A. Woodward The along strike dimensions and perhaps the downdip widths of asperities must be small for parts of the three Eltanin faults that have not ruptured in events larger than Mw 5.0-5.5. The segment of the Tharp transform between -210 and -241 km has a T of 8 yr, Mw 6.08-6.3 and five events.