Confirmation of the deep focus of this earthquake has now appeared in a Seismological Bulletin issued by the Jesuit Seismological Association of America.doi:10.1038/127782c0F. J. W. WHIPPLENatureStoneley R.On deep focus earthquakes. Gerlands Beit. Geophys . 1931...
28, p. 486, a few additional remarks concerning deep-focus earthquakes may be of interest. Such earthquakes are comparatively rare occurrences, and in the years 1918–1926 the late Prof. H. H. Turner reported only 138 in the "International Seismological Summary".R. STONELEY....
THE mechanism of deep-focus earthquakes has been a puzzle since their discovery almost 70 years ago, because brittle fracture and frictional sliding at dep... II H.,PC Burnley - 《Nature》 被引量: 589发表: 0年 Rupture Characteristics of the Deep Bolivian Earthquake of 9 June 1994 and the...
摘要: The hypothesis has been advanced that major portions of the annual pole motion are caused by the seasonal transport of air masses. These pole motions in turn can act as trigger forces on earthquakes. This is tested by observations of northern hemisphere pressures, pole motion, and occurren...
It appears that the most immediate and important direction in which geologists can assist in seismological-geological research lies along the line of cooperative study of deep-focus earthquakes, the discovery of which by the seismologists has opened an exceedingly interesting new chapter in earth ...
The cause of deep-focus earthquakes beneath subduction zones remains unclear, but dehydration of hydrated minerals within the subducting slab is a strong candidate for seismicity between 70 and 350 km depth. At greater depths, the transition from metastable olivine to the Mg2SiO4 spinel phases is ...
Deep-Focus Earthquakes and Recycling of Water into the Earth's Mantle For more than 50 years, observations of earthquakes to depths of 100 to 650 kilometers inside Earth have been enigmatic: at these depths, rocks are expecte... C Meade,R Jeanloz - 《Science》 被引量: 509发表: 1991年 ...
pressure phase transformation produce the counterintuitive phenomenon of "volume collapse" producing only shear radiation, with little, or no, volumetric component, even under conditions of full isotropy, and explain the mystery of the long-standing observations in deep-focus earthquakes (400-700 km)....
High Pressure Lab-Quakes Used as Analogues to Help Unravel the Mechanics of Deep-Focus Earthquakes Geophysical Research AbstractsGasc, JulienFauconnier, JulienDaigre, ClemenceMoarefvand, ArefehDeldicque, DamienGardonio, BlandineBurnley, PamelaSchubnel, Alexandre...
It has been proposed that intermediate- and deep-focus earthquakes occur on preexisting planes of weakness that were created at shallow depth. The purpose of this study is to test this hypothesis. We examined fault plane solutions for 360 events that occurred in the Tonga subduction zone from ...