基于地表亮温的山东省地震活动性分析

Analysis of seismic activity in Shandong Province based on land surface bright temperature

利用MODIS数据研究山东省地表亮温时空变化及与地震震例和断裂带活动的相关关系,结果表明,山东省2015年存在4个明显的地表亮温增温带,可能预示着未来地震活动性的增强区域;长岛震群与乳山震群在陆地上均有亮温增温带与之对应;风仪店、乳山—海阳断裂带在2015年地表亮温明显升高,沂沭、聊城—兰考断裂带则无明显变化。总之,120°E以东的胶东半岛地区地表亮温升高明显,预示着未来胶东半岛地区地震活动性可能强于鲁中、鲁西地区。

Based on MODIS data, the temporal and spatial variation of Shandong province＇s land surface bright temperature are studied to find out the relationship between it and the seismic activity. Results show that 4 obvious bright temperature rising zones where seismic activity may enhance exist in Shandong Province in the year of 2015. Both the Rushan and Changdao earthquake swarm can be reflected by land bright temperature rising zone. The Fengyidian, Rushan and Haiyang fault got obvious increasement in bright temperature, whereas the Yishu, Liaocheng—Lankao fault did not. On the whole, the surface temperature of the east part of Shandong province which located east to the 120° E longitude increased more than that of the central and the west part, which probably foreshow more seismic activities in the Jiaodong Peninsula in the future.