中强地震前的长波辐射异常震例研究

Abstract

Abstract: Three medium to large earthquakes happened in China in 2008, including the 25 August Zhongba M_S6.8 earthquake, the May 12 Wenchuan M_S8.0 earthquake and 21 March Yutian M_S7.3 earthquake. These three earthquakes have been studied using outgoing longwave radiation (OLR) 1°×1° grid data provided by NOAA(National Oceanic and Atmospheric Administration). The daily OLR data two months before and after the seismic events have been analyzed using moving average, standard threshold and so on. It is shown that the OLR anomalies have been found about 40 days to several days before the seismic events. These anomalies may have some relationship with the seismic events, but the relationship between the abnormal magnitude and earthquake magnitude were not simply linear.

Key words: Outgoing longwave radiation, M_S>6.5 earthquake, Thermal anomaly, Wenchuan M_S8.0 earthquake

CLC Number:

P315.7

JING Feng, SHEN Xu-hui, KANG Chun-li, MENG Qing-yan, XIONG Pan. Anomalies of Outgoing Longwave Radiation before Some Medium to Large Earthquakes[J]. EARTHQUAKE, 2009, 29(4): 117-122.

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Anomalies of Outgoing Longwave Radiation before Some Medium to Large Earthquakes

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