日本9.0级大地震前长波辐射异常研究
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摘要
应用聚类分析方法对日本Mw9.0地震前长波辐射进行了分析,结果表明2010年8月在大范围的西太平洋海域,出现一个自北向南逐渐增强的季节性高温条带,该条带从日本海沟中北段开始,一直向南延伸到伊豆—小笠原海沟.同时日本海沟的地壳垂直运动自2010年8月份开始出现季节性运动消失的异常现象.这两种现象同时出现是否表明地球物理场在大地震发生前可能出现异常?地震发生前半年时间出现的热异常条带是否与此次地震有关?这些问题有待进一步探索.
This paper analyzed long-wave radiation before the Japan Mw9.0 earthquake with cluster analysis.The results show that a seasonal high temperature band appeared in a wide range of the western Pacific Ocean in August 2010,which extended from the northern Japan trench to the southern Philippine plate boundary.Meanwhile,seasonal changes of vertical crustal movements disappeared in the Japan trench in August 2010.Whether the geophysical field exhibited abnormal variations before the Japan Mw9.0 earthquake? Are the thermal anomalies half year ago related to this earthquake? These problems remain to be explored.
This paper analyzed long-wave radiation before the Japan Mw9.0 earthquake with cluster analysis.The results show that a seasonal high temperature band appeared in a wide range of the western Pacific Ocean in August 2010,which extended from the northern Japan trench to the southern Philippine plate boundary.Meanwhile,seasonal changes of vertical crustal movements disappeared in the Japan trench in August 2010.Whether the geophysical field exhibited abnormal variations before the Japan Mw9.0 earthquake? Are the thermal anomalies half year ago related to this earthquake? These problems remain to be explored.
引文
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[10]王凡,沈正康,王阎昭等.2011年3月11日日本宫城M w 9.0级地震对其周边地区火山活动的影响.科学通报,2011,56(14):1080-1083.Wang F,Shen Z K,Wang Y Z,et al.Influence of the March 11,2011M w 9.0Tohoku-oki earthquake on regional volcanic activities.Chinese Sci.Bull.(in Chinese),2011,56,doi:10.1007/s11434-011-423-y.
[11]王金英.基于因子分析与聚类分析的辽宁省区域经济综合评价.辽宁工业大学学报(自然科学版),2011,31(3):187-190.Wang J Y.Comprehensive evaluation of regional economy in Liaoning province based on factor analysis and cluster analysis.Journal of Liaoning University of Technology(Natural Science Edition)(in Chinese),2011,31(3):187-190.
[12]陈发荣,杨春茹,李景喜等.原油中微量金属元素的测定及聚类分析.分析科学学报,2011,27(3):371-374.Chen F R,Yang C R,Li J X,et al.Determination of trace metal elements and cluster analysis on different crude oil.Journal of Analytical Science(in Chinese),2011,27(3):371-374.
[13]魏传杰,于非,吕连港等.南黄海海面大气长波辐射计算方法的比较.海洋科学进展,2009,27(3):302-311.Wei C J,Yu F,LüL G,et al.Comparison among computational methods for atmospheric long wave radiation above sea surface in the southern Yellow Sea.Advances in Marine Science(in Chinese),2009,27(3):302-311.
[14]马利华.全球逸出长波辐射季节性波动的空间分布.自然灾害学报,2008,17(5):132-13.Ma L H.Spatial distribution of seasonal oscillation in global outgoing long wave radiation.Journal of Natural Disasters(in Chinese),2008,17(5):132-13.
[2]强祖基,赁常恭,李玲芝等.卫星热红外图像亮温异常—短临震兆.中国科学,1998,28(6):64-73.Qiang Z J,Dian C G,Li L Z,et al.Satellitic thermal infrared brightness temperature anomaly image-short term and impending earthquake precursors.Science in China(Series D)(in Chinese),1999,42(3):313-324.
[3]强祖基,马蔼乃,陈芳允等.地震短临预报的小卫星系统的建议.科学通报,1999,44(17):1889-1891.Qiang Z J,Ma A N,Chen F Y,et al.Suggestion of small satellite system of impending prediction of earthquake.Chinese Sci.Bull.(in Chinese),1999,44(17):1889-1891.
[4]张元生,郭晓,钟美娇等.汶川地震卫星热红外亮温变化.科学通报,2010,(10):904-910.Zhang Y S,Guo X,Zhong M J,et al.Wenchuan earthquake:Brightness temperature changes from satellite infrared information.Chinese Sci.Bull.(in Chinese),2010,55(18):1917-1924.
[5]马晓静,邓志辉,陈梅花等.从卫星红外亮温与大地热流的关系看地震前的热红外异常.地球物理学报,2009,2(11):2746-271.Ma X J,Deng Z H,Chen M H,et al.A perspective to thermal infrared anomalies before earthquakes from the relationship between satellite infrared brightness temperature and terrestrial heat flow.Chinese J.Geophys.(in Chinese),2009,2(11):2746-271.
[6]Monastersky R.Giant shock rattles ideas about quake behaviour.Nature,2011,471(7338):274.
[7]Taira A.Tectonic evolution of the Japanese Island Arc system.Annu.Rev.Earth.Planet.Sci.,2001,29:109-134.
[8]孙文斌,和跃时.西太平洋Benioff带的形态及其应力状态.地球物理学报,2004,47(3):433-440.Sun W B,He Y S.Characteristics of the subduction zone in the western Pacific and its stress state.Chinese J.Geophys.(in Chinese),2004,47(3):433-440.
[9]刁法启,熊熊,倪四道等.利用GPS位移反演日本M w 9.0仙台地震及M w 7.9强余震静态位错模型.科学通报,2011,56(24):1999-2005.Diao F Q,Xiong X,Ni S D,et al.Slip model for the2011 M w 9.0Sendai(Japan)earthquake and its M w 7.9aftershock derived from GPS data.Chinese Sci.Bull.(in Chinese),2011,56,doi:10.1007/s11434-011-4643-4.
[10]王凡,沈正康,王阎昭等.2011年3月11日日本宫城M w 9.0级地震对其周边地区火山活动的影响.科学通报,2011,56(14):1080-1083.Wang F,Shen Z K,Wang Y Z,et al.Influence of the March 11,2011M w 9.0Tohoku-oki earthquake on regional volcanic activities.Chinese Sci.Bull.(in Chinese),2011,56,doi:10.1007/s11434-011-423-y.
[11]王金英.基于因子分析与聚类分析的辽宁省区域经济综合评价.辽宁工业大学学报(自然科学版),2011,31(3):187-190.Wang J Y.Comprehensive evaluation of regional economy in Liaoning province based on factor analysis and cluster analysis.Journal of Liaoning University of Technology(Natural Science Edition)(in Chinese),2011,31(3):187-190.
[12]陈发荣,杨春茹,李景喜等.原油中微量金属元素的测定及聚类分析.分析科学学报,2011,27(3):371-374.Chen F R,Yang C R,Li J X,et al.Determination of trace metal elements and cluster analysis on different crude oil.Journal of Analytical Science(in Chinese),2011,27(3):371-374.
[13]魏传杰,于非,吕连港等.南黄海海面大气长波辐射计算方法的比较.海洋科学进展,2009,27(3):302-311.Wei C J,Yu F,LüL G,et al.Comparison among computational methods for atmospheric long wave radiation above sea surface in the southern Yellow Sea.Advances in Marine Science(in Chinese),2009,27(3):302-311.
[14]马利华.全球逸出长波辐射季节性波动的空间分布.自然灾害学报,2008,17(5):132-13.Ma L H.Spatial distribution of seasonal oscillation in global outgoing long wave radiation.Journal of Natural Disasters(in Chinese),2008,17(5):132-13.
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