Deep-Focus Earthquakes: The Heartbeat of a Diamond Factory?Smith, Evan M.Gems & Gemology
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...
Deep-focus earthquakes that occur at 350–660 km are assumed to be caused by olivine → spinel phase transformation (PT). However, there are many existing puzzles: (a) What are the mechanisms for jump from geological 10−17 − 10−15 s−1to seismic 10 − 103...
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 ...
It is found that the earth resistivity showed obvious middle-and short-term anomalies before two deep earthquakes(MS≥7. 0级以上深源地震前,该台地电阻率存在明显的异常变化,属于中、短期异常。 更多例句>> 4) Source depth 震源深度 1. A method for numerical simulation of acoustic wave equation ...
Deep-Focus Earthquakes and Recycling of Water into the Earth's Mantle American Society for the Advancement of ScienceScienceMeade C, Jeanloz R. 1991. Deep-focus earthquakes and recycling of water into the Earth's mantle. ... C Meade,R Jeanloz - 《Science》 被引量: 509发表: 1991年 Earth...
0级以上深源地震前,该台地电阻率存在明显的异常变化,属于中、短期异常。 更多例句>> 5) Deep-focus earthquake 深源地震 1. In the seismogram records of deep-focus earthquakes occurred in areas such as margin of Japan Sea and the junction areas of China-Korea-Russia in direction NE of Changsha...
Deep-focus earthquakes, located in very high-pressure conditions 300 to 700 km below the Earth's surface within sinking slabs of relatively cold oceanic li... Lingling,Ye,Thorne,... - 《Earth & Planetary Science Letters》 被引量: 19发表: 2016年 Numerical tests on the seismic visibility of...
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...