Volcanic tremor is due to the oscillation of magmatic gas or due to the crater-wall downfall . 火山地震由火山气体振荡或火山口内壁崩塌引起。
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Volcanic tremor is due to the oscillation of magmatic gas or due to the craterwall downfall . 火山地震由火山气体振荡或火山口内壁的崩塌引起。
3.
Volcanic tremor is due to the oscillation of magmatic gas or due to the crater-wall downfall . 火山地震由火山气体振荡或火山口内壁的崩塌引起。
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Japan has the meaning of “ place where the sun rises ” ， “ sakura country ” and “ a nation full of volcanoes ” as well 日本的国名含义为“日出之国” ，又有“樱花之国” 、 “火山地震之邦”的称号。
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Here we used wavelet and spectral analysis to different kind seismic waves in volcanic area , in order to pick up their spectral character and determine the type of these earthquakes 本文对火山区不同种类的地震波形运用小波分析和频谱分析的方法，希望能提取不同类型火山地震的一些频谱特征，确定火山地震的类型。
