N a very slight tremor of the earth's surface, thought not to be caused by an earthquake 微震
The theory explains the microseisms are originating from surf or other action at steep coasts.
该理论解释脉动的原因是激浪或陡岸的其它作用。
Is the "Third microseisms" related with the geomagnetic effect of Linfa and other three typhoons?
莲花等三台风的地磁效应与“第三类脉动”有关吗？
Therefore, the features of distribution of microseisms, magnitude and depth are probably related to the activity of magma body, which show mechanism of hot volcanic matter.
腾冲火山区的微震活动分布、地震强度、及震源深度特征所表现的现象可能与地下岩浆体活动相关，显示了与火山热物质孕震机理有关的明显特征。
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