CAJ | 학술논문

一些强地震前地表可产生热异常是人们比较一致的认识,但能否用卫星遥感技术观测到地下热异常则存在很大的分歧.本文试图通过分析热红外亮温与大地热流值的关系,探讨利用卫星遥感技术观测地震热异常的可能性及其存在的一些问题.研究结果表明:(1)在绝大多数情况下,亮温随大地热流值的升高而升高,升高的速率平均为0.057℃/mw·m~(-2).如果地震引起的大地热流异常为100 mW·m~(-2),则有可能产生卫星红外平均亮温约5.7℃的异常.(2)不同地区亮温随大地热流值变化速率不同,即使地震前出现了卫星热红外亮温异常,但不同地区表现也是不同的.(3)在一些地区一些季节,亮温与大地热流值关系不明显,可能是亮温数据受气象因素干扰所致.这说明地震前的热红外亮温异常是复杂的,甚至有时是难于观测到的.
일사강지진전지표가산생열이상시인문비교일치적인식,단능부용위성요감기술관측도지하열이상칙존재흔대적분기.본문시도통과분석열홍외량온여대지열류치적관계,탐토이용위성요감기술관측지진열이상적가능성급기존재적일사문제.연구결과표명:(1)재절대다수정황하,량온수대지열류치적승고이승고,승고적속솔평균위0.057℃/mw·m~(-2).여과지진인기적대지열류이상위100 mW·m~(-2),칙유가능산생위성홍외평균량온약5.7℃적이상.(2)불동지구량온수대지열류치변화속솔불동,즉사지진전출현료위성열홍외량온이상,단불동지구표현야시불동적.(3)재일사지구일사계절,량온여대지열류치관계불명현,가능시량온수거수기상인소간우소치.저설명지진전적열홍외량온이상시복잡적,심지유시시난우관측도적.
It is often accepted that thermal anomalies on the earth surface can occur before some major earthquakes.But it is very controversial whether such thermal anomalies can be observed by satellite remote sensing technology.We attempt to explore the possibility and problems on the observation of thermal anomalies before earthquakes using satellite remote sensing data by analyzing the relationship between thermal infrared brightness temperature and terrestrial heat flow.The result shows that in most cases, brightness temperature increases with the growing terrestrial heat flow at an average rate 0.057℃/Mw·m~(-2).If the terrestrial heat flow anomaly resulted from an earthquake is 100 Mw·m-2，there would be a satellite thermal infrared anomaly about 5.7℃.In different regions, the brightness temperature changes with the terrestrial heat flow at varied rates.Even if satellite thermal infrared anomalies occur before earthquakes, they will have differing expressions.For some regions and seasons, the relationship between brightness temperature and terrestrial heat flow is not obvious, because the brightness temperature data is very likely disturbed by meteorological factors.That implies that the thermal infrared brightness temperature anomalies associated with earthquakes are actually very complicated and cannot be observed sometimes.