川滇地区4个地温钻孔监测数据分析
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摘要
通过分析川滇地区4个浅层地温观测台站(宾川台、丽江台、腾冲台和五龙台)的地温日连续资料表明,太阳辐射的年周期影响随着地下深度的增加逐渐减弱,在地下14m深度,太阳辐射年周期的影响已经基本消失,与理论计算存在一定差异,可能与台站地下介质特性及川滇地区普遍发育的热泉有关。太阳辐射的波峰随深度呈指数衰减,波谷随深度呈对数增加,在14m深度处,太阳辐射的波峰波谷影响基本消失。通过牛顿迭代法反演不同深度的热扩散系数,结果显示,宾川、丽江、腾冲3个台站热扩散系数随深度增加而增大;五龙台从4m以下深度开始,其热扩散系数随深度增加而增大。虽然4个地温台站的热扩散系数随深度增加的变化幅度不同,但基本都呈指数函数变化规律。
From September to November of 2014,we laid out four deep geothermal stations near the Sichuan-Yunnan fault zones(Binchuan,Lijiang,Tengchong and Wulong).The results show that the annual cycle effect of solar radiation decreases with the increase of underground depth,and the influence of the annual activity of solar radiation basically disappears at 14 mand there is a difference with theoretical calculation,which may be related to the characteristics of underground media and widely developed hot springs in Sichuan-Yunnan region.The peak of solar radiation decays exponentially with depth,and the trough increases logarithmically with depth.At the depth of 14 m,the tidal wave valley of the solar radiation basically disappears.The thermal diffusivity of different depths is retrieved by Newton iteration,and the results show that the thermal diffusivities increase with depth in Binchuan,Lijiang and Tengchong,and the thermal diffusivity of Wulong increases with depths below4 meters.Although the range of variation is different,it basically assumes exponential function.
From September to November of 2014,we laid out four deep geothermal stations near the Sichuan-Yunnan fault zones(Binchuan,Lijiang,Tengchong and Wulong).The results show that the annual cycle effect of solar radiation decreases with the increase of underground depth,and the influence of the annual activity of solar radiation basically disappears at 14 mand there is a difference with theoretical calculation,which may be related to the characteristics of underground media and widely developed hot springs in Sichuan-Yunnan region.The peak of solar radiation decays exponentially with depth,and the trough increases logarithmically with depth.At the depth of 14 m,the tidal wave valley of the solar radiation basically disappears.The thermal diffusivity of different depths is retrieved by Newton iteration,and the results show that the thermal diffusivities increase with depth in Binchuan,Lijiang and Tengchong,and the thermal diffusivity of Wulong increases with depths below4 meters.Although the range of variation is different,it basically assumes exponential function.
引文
[1]陈智梁,刘宇平,唐文清,等.青藏高原东北缘大陆岩石圈现今变形和位移[J].地质通报,2006,25(1):20-28(Chen Zhiliang,Liu Yuping,Tang Wenqing,et al.Recent Deformation and Displacement of Continental Lithosphere in the Northeastern Margin of Qinghai-Tibet Plateau[J].Geological Bulletin of China,2006,25(1):20-28)
[2] Xu L,Rondenay S,vander Hilst R D.Structure of the Crust Beneath the Southeastern Tibetan Plateau from Teleseismic Receiver Functions[J].Physics of the Earth and Planetary Interiors,2007,165(3):176-193
[3]张培震.青藏高原东缘川西地区的现今构造变形、应变分配与深部动力过程[J].中国科学:地球科学,2008,38(9):1 041-1 056(Zhang Peizhen.Present Tectonic Deformation,Strain Distribution and Deep Dynamic Process in the Western Sichuan Area on the Eastern Margin of the Qinghai-Tibet Plateau[J].Science China Earth Sciences,2008,38(9):1 041-1 056)
[4] Xu Z,Ji S,Li H,et al.Uplift of the Longmenshan Range and the Wenchuan Earthquake[J].Episodes,2008,31(3):291-301
[5]方颖,江在森,张晶,等.青藏高原现今高分辨率地壳运动特征[J].地球科学-中国地质大学学报,2009,2009(3):399-404(Fang Ying,Jiang Zaisen,Zhang Jing,et al.High-Resolution Characteristics of Recent Crustal Movement in Qinghai-Tibet Plateau[J].Earth Science(Journal of China University of Geosciences),2009,2009(3):399-404)
[6] Yao H,Van Der Hilst R D,Montagner J R.Heterogeneity and Anisotropy of the Lithosphere of SE Tibet from Surface Wave Array Tomography[J].Journal of Geophysical Research:Solid Earth,2010,115(B12)
[7]徐锡伟,程佳,许冲,等.青藏高原块体运动模型与地震活动主体地区讨论:鲁甸和景谷地震的启示[J].地震地质,2014,36(4):1 116-1 134(Xu Xiwei,Cheng Jia,Xu Chong,et al.Discussion on Block Kinematic Model and Future Themed Areas for Earthquake Occurrence in the Tibetan Plateau:Inspiration from the Luduan and Jinggu Earthquakes[J].Seismology and Geology,2014,36(4):1 116-1 134)
[8] Wang E,Kirby E,Furlong K P,et al.Two-Phase Growth of High Topography in Eastern Tibet during the Cenozoic[J].Nature Geoscience,2012,5(9):640-645
[9] Yang Y,Ritzwoller M H,Zheng Y,et al.A Synoptic View of the Distribution and Connectivity of the Mid-Crustal Low Velocity Zone Beneath Tibet[J].Journal of Geophysical Research:Solid Earth,2012,117(B4)
[10]Wang C,Dai J,Zhao X,et al.Outward-Growth of the Tibetan Plateau during the Cenozoic:A Review[J].Tectonophysics,2014,621:1-43
[11]马瑾,陈顺云,扈小燕,等.大陆地表温度场的时空变化与现今构造活动[J].地学前缘,2010,17(4):1-14(Ma Jin,Chen Shunyun,Hu Xiaoyan,et al.Spatial-Temporal Variation of the Land Surface Temperature Field and PresentDay Tectonic Activity[J].Earth Science Frontiers,2010,17(4):1-14)
[12]强祖基,马蔼乃,曾佐勋,等.卫星热红外地震短临预测方法研究[J].地学前缘,2010,17(5):254-262(Qiang Zuji,Ma Ainai,Zeng Zuoxun,et al.A Study of the Method of Satellite Thermal Infrared Earthquake Prediction in Imminence[J].Earth Science Frontiers,2010,17(5):254-262)
[2] Xu L,Rondenay S,vander Hilst R D.Structure of the Crust Beneath the Southeastern Tibetan Plateau from Teleseismic Receiver Functions[J].Physics of the Earth and Planetary Interiors,2007,165(3):176-193
[3]张培震.青藏高原东缘川西地区的现今构造变形、应变分配与深部动力过程[J].中国科学:地球科学,2008,38(9):1 041-1 056(Zhang Peizhen.Present Tectonic Deformation,Strain Distribution and Deep Dynamic Process in the Western Sichuan Area on the Eastern Margin of the Qinghai-Tibet Plateau[J].Science China Earth Sciences,2008,38(9):1 041-1 056)
[4] Xu Z,Ji S,Li H,et al.Uplift of the Longmenshan Range and the Wenchuan Earthquake[J].Episodes,2008,31(3):291-301
[5]方颖,江在森,张晶,等.青藏高原现今高分辨率地壳运动特征[J].地球科学-中国地质大学学报,2009,2009(3):399-404(Fang Ying,Jiang Zaisen,Zhang Jing,et al.High-Resolution Characteristics of Recent Crustal Movement in Qinghai-Tibet Plateau[J].Earth Science(Journal of China University of Geosciences),2009,2009(3):399-404)
[6] Yao H,Van Der Hilst R D,Montagner J R.Heterogeneity and Anisotropy of the Lithosphere of SE Tibet from Surface Wave Array Tomography[J].Journal of Geophysical Research:Solid Earth,2010,115(B12)
[7]徐锡伟,程佳,许冲,等.青藏高原块体运动模型与地震活动主体地区讨论:鲁甸和景谷地震的启示[J].地震地质,2014,36(4):1 116-1 134(Xu Xiwei,Cheng Jia,Xu Chong,et al.Discussion on Block Kinematic Model and Future Themed Areas for Earthquake Occurrence in the Tibetan Plateau:Inspiration from the Luduan and Jinggu Earthquakes[J].Seismology and Geology,2014,36(4):1 116-1 134)
[8] Wang E,Kirby E,Furlong K P,et al.Two-Phase Growth of High Topography in Eastern Tibet during the Cenozoic[J].Nature Geoscience,2012,5(9):640-645
[9] Yang Y,Ritzwoller M H,Zheng Y,et al.A Synoptic View of the Distribution and Connectivity of the Mid-Crustal Low Velocity Zone Beneath Tibet[J].Journal of Geophysical Research:Solid Earth,2012,117(B4)
[10]Wang C,Dai J,Zhao X,et al.Outward-Growth of the Tibetan Plateau during the Cenozoic:A Review[J].Tectonophysics,2014,621:1-43
[11]马瑾,陈顺云,扈小燕,等.大陆地表温度场的时空变化与现今构造活动[J].地学前缘,2010,17(4):1-14(Ma Jin,Chen Shunyun,Hu Xiaoyan,et al.Spatial-Temporal Variation of the Land Surface Temperature Field and PresentDay Tectonic Activity[J].Earth Science Frontiers,2010,17(4):1-14)
[12]强祖基,马蔼乃,曾佐勋,等.卫星热红外地震短临预测方法研究[J].地学前缘,2010,17(5):254-262(Qiang Zuji,Ma Ainai,Zeng Zuoxun,et al.A Study of the Method of Satellite Thermal Infrared Earthquake Prediction in Imminence[J].Earth Science Frontiers,2010,17(5):254-262)