(袖状气爆装置)——它利用丙烷和氧混合,在挠性胶筒中用电起爆,每次爆炸产生的废气排至水面上,而地震冲击波通过完全封闭的气室传到水中。这种震源有好几种变型。虽然爆炸是在全封闭的室内发生,而且废气能引至水面上,但在这种震源的爆炸记录中还可以看到一些气泡震荡。 (Sleeve gas explosion device) - It uses a mixture of propane and oxygen, detonated in a flexible plastic cartridge, the exhaust gas generated by each explosion to the water surface, and seismic shock waves through a fully enclosed gas chamber into the water. There are several variations of this source. Although the explosion occurred in a completely enclosed room and the exhaust gas could reach the water surface, some bubble shocks could be seen in the explosion records of this source.