海城地震曾有报导:“地震前,出现一种‘地味’的异常现象,……群众不断嗅到有怪味的气体,象六六六粉味,H_2S 味……,使人感到心闷不舒”。在另一些国内外大震中也有类似的报导。显然 H_2S 在特定的地质环境中是有可能成为地震前兆现象的,探索H_2S 与地震前兆的关系已引起了国内外一些单位的注意,并开展了观测与研究工作。 Haicheng earthquake has been reported: “Before the earthquake, there is a” ground taste “an anomaly, ... ... the people continue to smell the smell of gas, like the six six six powder, H_2S flavor ......, people feel boring Uncomfortable”. Similar reports have been made in other major earthquakes both at home and abroad. Obviously H 2 S is likely to be a precursor of the earthquake in a specific geological environment. It has attracted the attention of some units at home and abroad to explore the relationship between H 2 S and the earthquake precursors, and has carried out observation and research work.