我国断层气测量在地震科学研究中的应用现状

氢气被认为是反应断裂活动最灵敏的地球化学组分之一。研究影响断裂带氢浓度动态变化的主要因素，是科学分析断裂带氢与构造活动关系的基础工作。本文基于河南内乡马山口断层气氢气浓度与辅助测项的连续观测资料，重点分析了氢浓度变化与地温、气温、气压的相关关系，确定了主要影响因素。结果表明，氢气浓度日变化极值介于气温和地温之间，极值点靠近地温一侧。使用逐步回归方法分析进一步证明，地温、温度对氢气浓度均有影响，但地温影响更显著，气压影响不显著。总体来讲，氢浓度会受到地温和气温的双重影响，但与地温关系更为密切。

Preseismic hydrogen gas anomalies caused by stress-corrosion process preceding earthquakes

It is considered that Hydrogen is one of the most sensitive geochemical components that reflect the fault movement. This study on the main factors influencing the dynamic change of the Hydrogen concentration of the fault zone is the basic work for the scientific analysis of the relationship between the Hydrogen in the fault zone and its movement. Based on the continuous observations on the Hydrogen concentration of the fault gas of Mashankou and auxiliary test items, the relationship between the change of the Hydrogen concentration and ground temperature, air temperature, and air pressure is analyzed in the paper. The main influencing factor is confirmed. The result shows that the extreme value position in time of the diurnal variation of Hydrogen concentration is between that of ground temperature and air temperature and is near that of ground temperature. The analysis using stepwise regression method further proves that ground and air temperatures influence Hydrogen concentration with the significant factor of ground temperature and the insignificant one of air pressure. In conclusion, Hydrogen concentration can be influenced by the ground and the air temperatures, but is more sensitive to the ground temperature.