关键词: 东亚大陆, 地震, 地球自转, 动力

Abstract:

The active belt strikes, mobile fashions, source principal compressive stress directions, total shift directions, distribution along latitudes and change along with the time of large earthquakes in East Asia continent all correlate to the speed change of earth's rotation The initial two years in the increasing speed of earth's rotation are the active periods of EW and SN striking earthquake belts, principal compressive stress directions in this region are in NW quadrant and earthquakes shift totally from NW to SE in these periods, after these are active periods of NE and NW striking earthquake belts, principal compressive stress directions in this region are about in 90°angles near EW and earthquakes shift totally from W to E; the times on uniform speed of earth's rotation are active periods of NE and NW striking earthquake belts, principal compressive stress directions in this region are in 90°angles near SN and earthquakes shift totally from N to S; the initial two years in the decreasing speed of earth's rotation are the active periods of NNE and WNW striking earthquake belts, principal compressive stress directions in this region are in NE quadrant and earthquakes shift totally from NE to SW in these periods, the times after these are active periods of NE and NW striking earthquake belts, principal compressive stress directions in this region are about in 90°angles near EW and earthquakes shift totally from E to W. The most places of M≥7 earthquake frequency along latitudes are at N42°. The earthquakes decrease during increasing speed of earth's rotation and the earthquakes increase during decreasing speed of earth's rotation. The earthquakes happening during lower speed of earth's rotation are more than during higher speed of earth's rotation.

Key words: East Asia Continent, Earthquakes, Earth’s rotation, Source dynamic