摘要
地震前温度异常以及CH4、CO2等气体的含量增加已经被人们逐渐认识,目前较多的研究集中在使用卫星热红外数据研究震前的温度异常,震前CH4、CO2等气体含量的增加却一直未能从卫星观测中实现。使用MOD IS数据研究了2002年1月15日台湾5级地震前的海上温度异常,使用MOPITT数据研究了2002年3月31日台湾7.5级强震前的CO异常以及温度异常。研究发现温度异常区和CO高值区吻合,因此认为这种温度异常可能是由于地球排气作用而导致。
Temperature anomaly and gas anomaly such as methane and carbon dioxide before earthquake have been recognized for years. Many researchers have studied temperature anomalies with satellite thermal infrared data, while the gas anomaly has only been derived from limited ground measurements, and it is still not applicable in large areas. Here MODIS （Moderate Resolution Imaging Spectrometer） thermal infrared data is used to study the temperature increase before the Ms 5.0 Taiwan earthquake on January 15, 2002, and MOPITT （ Measurements of Pollution in the Troposphere ） data is used to study the CO total column concentration before the Ms 7.5 Taiwan earthquake on March 31, 2002. It is found that there existed both high temperature area and high CO total column area near the Ms 7.5 earthquake epicenter and these two areas located at the same place. It is considered that this CO increase was caused by earth degassing. When these gases emit to atmosphere, they will also lead to temperature increase under the atmosphere electromagnetic field.
出处
《地球科学进展》
CAS
CSCD
北大核心
2006年第7期695-698,T0004,共5页
Advances in Earth Science
基金
国家自然科学基金项目"东北地区特大森林火灾与地质构造的关系研究"(编号:30500393)资助
