| Technology Application |
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Satellite thermal infrared background field variation characteristics of the Qilian Mountains and the Capital Zone |
| WEN Shaoyan1,2, QU Chunyan2, SHAN Xinjian2, YAN Lili2, SONG Dongmei3 |
1. Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China;
2. State Key Laboratory of Earthquake Dynamics, Institute of Geology, CEA, Beijing 100029, China;
3. China University of Petroleum(East China), Qingdao 266555,China |
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Abstract Understanding the thermal infrared background field and its temporal-spatial evolution characteristics under the condition of no earthquake is the key to the effective extraction of infrared anomaly information related to earthquake. The brightness temperature background fields in the study areas of the Qilian Mountains and the Capital Zone were established using NOAA satellite thermal infrared remote sensing data from 2003 to 2011. At the same time,the temporal-spatial evolution characteristics of infrared brightness temperature background fields were analyzed. The results show that the background field of brightness temperature is influenced jointly by many factors,such as seasonal variation,terrain,and fault activity. Seasonal variation is the most important factor affecting infrared brightness temperature which has the obvious annual variation feature. In consideration of geographical environment difference,the characteristics of annual variation show different manners. The brightness temperature changes unstably in the region where topographical features are complicated. The relationship between the infrared brightness temperature and the elevation shows prominent negative correlation,and the brightness temperature is reduced by about 0.21~0.63℃ with the increase of 100 m in ground elevation,which is in accordance with the temperature lapse rate. The active fault belts obviously display linear belts or the boundary of the brightness temperature in the thermal infrared temperature images. Studies show the variation characteristics of the multi-annual average background field which smoothes some climate change information such as atmosphere, and this field is regarded as a stable reference field of brightness temperature to detect the temperature-increase anomaly caused by fault activity and earthquake.
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| Keywords
information transformation
characteristic mapping pattern
change detection
object-oriented
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Issue Date: 03 July 2013
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| [1] Dimitar O,Nevin B,Thomas L,et al.Satellite thermal IR phenomena associated with some of the major earthquakes in 1999-2003[J].Physics and Chemistry of the Earth,2006,31(4/9):154-163.[2] Saraf A K,Rawat V,Banerjee P,et al.Satellite detection of earthquake thermal infrared precursors in Iran[J].Nat Hazards,2008,47(1):119-135.[3] 马瑾,单新建.利用遥感技术研究断层现今活动的探索——以玛尼地震前后断层相互作用为例[J].地震地质,2000,22(3):210-215. Ma J,Shan X J.An attempt to study fault activity using remote sensing technology:A case of the Mani earthquake[J].Seismology and Geology,2000,22(3):210-215.[4] 荆凤,申旭辉,张铁宝,等.与地震有关的活动断裂带红外辐射变化特征[J].国土资源遥感,2013,25(1): 56-60. Jing F,Shen X H,Zhang T B,et al.Variation characteristics in infrared radiation of active fault zone related to earthquakes[J].Remote Sensing for Land and Resources,2013,25(1):56-60.[5] 陈顺云,马瑾,刘培洵,等.中国地表亮度温度年变基准场[J].地震地质,2004,26(3):528-538. Chen S Y,Ma J,Liu P X,et al.Normal annual variation field of land surface brightness temperature in China[J].Seismology and Geology,2004,26(3):528-538.[6] 屈春燕,单新建,马瑾.地震活动热红外异常的影响因素分析[J].地震研究,2007,30(2):113-119. Qu C Y,Shan X J,Ma J.Influence factors to seismic infrared anomaly[J].Journal of Seismological Research,2007,30(2):113-119.[7] 郭卫英,马瑾,单新建.活动断裂带的地形地貌差异与红外亮温年变特征的研究[J].地球物理学进展,2008,23(5):1437-1443. Guo W Y,Ma J,Shan X J.Researches on the yearly characteristic of IR brightness temperature and the different hypsography on the active faults[J].Progress in Geophysics,2008,23(5):1437-1443.[8] 温少妍,屈春燕,闫丽莉,等.区域红外亮温背景场建立方法及初步应用[J].地震,2011,31(2):59-67. Wen S Y,Qu C Y,Yan L L,et al.Method for constructing regional brightness temperature background field and its preliminary application[J].Earthquake,2011,31(2):59-67.[9] 董治平,冯建刚,王先,等.祁连山构造带地震迁移活动特征分析[J].国际地震动态,2007,346(10):8-14. Dong Z P,Feng J G,Wang X,et al.Characteristics of earthquakes migration along the Qilianshan structural zone[J].Recent Developments in World Seismology,2007,346(10):8-14.[10] 韩月萍,杨国华,董运宏,等.首都圈地区现今地壳垂直形变特征[J].华北地震科学,2009,27(1):13-16. Han Y P,Yang G H,Dong Y H,et al.The current characteristics of vertical crustal deformation of the Capital Circal[J].North China Earthquake Sciences,2009,27(1):13-16.[11] 王若柏,顾国华,徐杰,等.张家口-渤海地震构造带的地壳形变研究[J].地震地质,2004,12(4):586-595. Wang R B,Gu G H,Xu J,et al.Discussion on characteristics of crustal deformation along the Zhangjiakou-Bohai seismotectonic zone[J].Seismology and Geology,2004,12(4):586-595.[12] 方精云.我国气温直减率分布规律的研究[J].科学通报,1992(9):817-820. Fang J Y.Study on distribution rules of air temperature lapse-rate in China[J].Chinese Science Bulletin,1992(9):817-820. |
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2013,
Vol. 25
