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The Change in Outgoing Long-wave Radiation before the Ludian MS6.5 Earthquake Based on Tidal Force Niche Cycles
Zhang Yan,Kang Chunli,Ma Weiyu,Yao Qi
作者单位
Zhang Yan China Earthquake Networks Center, Beijing 100045, China 
Kang Chunli China Earthquake Networks Center, Beijing 100045, China 
Ma Weiyu China Earthquake Networks Center, Beijing 100045, China 
Yao Qi China Earthquake Networks Center, Beijing 100045, China 
摘要:
The cycle process of the tidal force niche for the Ludian MS6.5 earthquake occurring in Ludian County, Yunnan Province, China on August 3, 2014 was calculated. The earthquake occurred near the middle point phase. It indicates that the type of seismogenic fault that the tide force acted on belongs to the thrust fault. According to the tidal niche cycle, the abnormal OLR (Outgoing Long-wave Radiation) change was analyzed based on NOAA satellite data around the whole land area of China before and after the earthquake. The result shows that the OLR changed evidently with tide force change. Temporally, the change went through the evolution process of initial OLR rise→ strengthening→ abnormal peaking→ attenuation→ returning to normal; and spatially, the abnormal area wound its way along the Zhaotong-Ludian fault and went through a scattered→ conversion→ scattered process. This process is similar to the change process of rock breaking under stress loading. The results indicate that the tidal force of a celestial body could trigger an earthquake when the tectonic stress reaches its critical breaking point and the OLR anomaly is proportional to the seismic tectonic stress change. It is of great use to combine OLR and tidal force in earthquake precursory observation.
关键词:  The tidal force niche  Thermal infrared  OLR  The Ludian MS6.5 earthquake  NOAA satellite
DOI:
分类号:
基金项目:Science for Earthquake Resilience-Based on the Application of Atmospheric Temperature Vertical Stratification 3D Remote Sensing Technology in Earthquake Prediction (Project number:XH15050).
The Change in Outgoing Long-wave Radiation before the Ludian MS6.5 Earthquake Based on Tidal Force Niche Cycles
Zhang Yan,Kang Chunli,Ma Weiyu,Yao Qi
Abstract:
The cycle process of the tidal force niche for the Ludian MS6.5 earthquake occurring in Ludian County, Yunnan Province, China on August 3, 2014 was calculated. The earthquake occurred near the middle point phase. It indicates that the type of seismogenic fault that the tide force acted on belongs to the thrust fault. According to the tidal niche cycle, the abnormal OLR (Outgoing Long-wave Radiation) change was analyzed based on NOAA satellite data around the whole land area of China before and after the earthquake. The result shows that the OLR changed evidently with tide force change. Temporally, the change went through the evolution process of initial OLR rise→ strengthening→ abnormal peaking→ attenuation→ returning to normal; and spatially, the abnormal area wound its way along the Zhaotong-Ludian fault and went through a scattered→ conversion→ scattered process. This process is similar to the change process of rock breaking under stress loading. The results indicate that the tidal force of a celestial body could trigger an earthquake when the tectonic stress reaches its critical breaking point and the OLR anomaly is proportional to the seismic tectonic stress change. It is of great use to combine OLR and tidal force in earthquake precursory observation.
Key words:  The tidal force niche  Thermal infrared  OLR  The Ludian MS6.5 earthquake  NOAA satellite