Please wait a minute...
img img
高级检索
地球科学进展  2011, Vol. 26 Issue (6): 631-641    DOI: 10.11867/j.issn.1001-8166.2011.06.0631
研究论文     
祁连山老虎沟12号冰川冰内结构特征分析
武震1,张世强1,刘时银1,杜文涛1,2
1.中国科学院寒区旱区环境与工程研究所,冰冻圈科学国家重点实验室,甘肃兰州730000;
2.中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,祁连山冰川与生态环境综合观测研究站,甘肃兰州730000
Structural Characteristics of the No.12 Glacier in Laohugou Valley,Qilian Mountain Based on the Ground Penetrating Radar Combined  with FDTD Simulation
Wu Zhen1, Zhang Shiqiang1, Liu Shiyin1, Du Wentao1,2
1.State Key Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research, Institute,Chinese Academy of Sciences,Lanzhou730000, China; 
2.Qilian Mountain Station of Glaciology and Ecologic Environmental of State Key  Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research,Institute, Chinese Academy of Sciences, Lanzhou730000, China
 全文: PDF(3850 KB)  
摘要:

利用探地雷达(Ground Penetration Radar, GPR)调查冰川冰内结构和冰层厚度是一种监测冰川变化常用手段。应用麦克斯维(Maxwell)方程的二维时域有限差分 (FDTD)方法,通过将模拟图像与老虎沟12号冰川的实测图像的对比,分析了雷达剖面中的几种反射特征,如冰裂隙、融洞、暖冰等。对比结果表明,GPR的反射图像会受到诸多因素的影响,除了介电常数,还包括介质的厚度,形态,粗糙度等因素的影响。探测结果表明,具有极大陆型特征的老虎沟12号冰川的局部的冰内温度呈现出较高的态势。同时,FDTD模拟也为我们未来利用GPR来监测冰川随气候的变化提供了很好的分析手段。

关键词: 探地雷达老虎沟12号冰川时域有限差分模拟    
Abstract:

The use of ground penetration radar(GPR)for surveying glacial structure and ice thickness is a common method of monitoring glacial variation, but how to extract accurately the information and ice thickness is often more concerned about data interpretation. In this paper, we have run a Finite-Difference Time-Domain (FDTD) model that solves Maxwell′s equations in two dimensions, by comparison simulated image and the results of measured radar, and  analyzed  several reflection characteristics within several profiles, such as crevasses, melting cave, and temperate ice and so on. Comparison results show that GPR reflection image is affected by many factors, such as medium thickness, morphology, roughness and other factors as well in addition to dielectric constant.The survey result also shows that the icebody temperature  at Lao hugou valley No.12 glacier as polar continental glacier presents a higher trend.  Meteorological and historical data indicate that  the retreat and ablation of glaciers have been aggravated   in recent years. Meanwhile, GPR combined  with FDTD simulation provides good analytical tools for monitoring glacial variation along with climate change in our future.

Key words: GPR    The No.12 Glacier in Lao hugou Valley    FDTD    Simulation
收稿日期: 2010-11-23 出版日期: 2011-06-10
:  P914  
基金资助:

科技部基础性工作专项项目“中国冰川资源及其变化调查”(编号:2006FY110200);中国科学院知识创新工程重要方向项目“冰碛湖耦合关系及对冰碛湖溃决机理影响研究”(编号:KZCX2-YW-Q03-04);中国科学院知识创新工程项目“中国冰川资源及其变化调查”(编号:KZCX2-YW-GJ04)资助.

通讯作者: 武震     E-mail: wuzhen@lzb.ac.cn
作者简介: 武震(1979-),男,甘肃天水人,博士研究生,主要从事探地雷达在寒区环境中的应用和模拟研究.E-mail:[WT6BZ]wuzhen@lzb.ac.cn
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  

引用本文:

武震,张世强,刘时银,杜文涛. 祁连山老虎沟12号冰川冰内结构特征分析[J]. 地球科学进展, 2011, 26(6): 631-641.

Wu Zhen, Zhang Shiqiang, Liu Shiyin, Du Wentao. Structural Characteristics of the No.12 Glacier in Laohugou Valley,Qilian Mountain Based on the Ground Penetrating Radar Combined  with FDTD Simulation. Advances in Earth Science, 2011, 26(6): 631-641.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2011.06.0631        http://www.adearth.ac.cn/CN/Y2011/V26/I6/631

[1]Molnia B. Late nineteenth to early twentyfirst century behavior of Alaskan glaciers as indicates of changing regional climate[J].Global and Planetary Change,2007,56(1/2): 23-56.
[2]Barry R G. The status of research on glaciers and global glacier recession: A review[J].Progress in Physical Geography,2006,30(3): 285-306.
[3]Irvine-Fynn T D L, Moorman B J, Williams J L M,et al.Seasonal changes in groundpenetrating radar signature observed at a polythermal glacier, Bylot Island, Canada[J].Earth Surface Processes and Landforms,2006,31: 892-909.
[4]Haeberli W. Mountain glaciers in global climate-related observing systems[C]Huber U M, Reasoner M A, Bugmann H, eds. Global Change and MountainRegions: A State of Knowledge Overview. Kluwer Academic, Dordrecht,2005:169-175.
[5]Colbeck S C. The layered character of snow covers[J].Reviews of Geophysics, 1991, 29(1): 81-96.
[6]Murray T, Stuart G W, Fry M, et al. Englacial water distribution in a temperate glacier from surface and borehole radar velocity analysis[J].Journal of Glaciology,2000,46(154): 389-398.
[7]Bentley C R. Advances in geophysical exploration of ice sheets and glaciers[J].Journal of Glaciology, 1975,15(73): 113-135.
[8]Clarke T S, Bentley C R. High-resolution radar on icestream B2, Antarctica: Measurements of electromagnetic wave speed in firn and strain history from buried crevasses[J].Annal of Glaciology,1994,20(1): 153-159.
[9]Sun Bo,Wen Jiahong,He Maobing,et al. Arctic sea ice thickness penetrating radar detection and analysis of surface shape features[J].Science China Press,2002,32(11):951-958.
[10]Benjumea B, Macheret Yu Ya, Navarro F,et al. Estimation of water content in a temperate glacier from radar and seismic sounding data[J].Annal of Glaciology,2003,37(1):317-324.
[11]James Irving, Rosemary Knight. Numerical modeling of ground-penetrating in 2-D using MATLAB[J]. Computers & Geosciences,2006, 32(9): 1 247-1 258.
[12]Yee K S. Numerical solution of initial boundary value problemsinvolving Maxwell equations in isotropic media[J].IEEE TransAntennas Propagat,1966,14(3):302-307.
[13]Wang T, Tripp A C. FDTD simulation of EM wave propagation in 3-D media[J].Geophysics, 1996, 61(1): 110-120.
[14]Chen Y H, Chew W C, Oristaglio M L. Application of perfectly matched layers to the transient modeling of subsurface EM problems[J].Geophysics,1997, 62(6):1 730-1 736.
[15]Bergmann T, Robertsson J O A, Holliger K. Finite difference modeling of electromagnetic wave propagation in dispersive and attenuating media
[J].Geophysics,1998,63(3):856-867.
[16]Holliger K, Bergman T. Numerical modeling of borehole georadar data[J].Geophysics,2002,67(4):1 249-1 257.
[17]Teixeira F L,Chew W C, Straka M,et al. Finite-difference time-domain simulation of groundpenetratingradar on dispersive, inhomogeneous, and conductive soils[J].IEEE Transaction Geoscience Remote Sensing,1998,36(6):1 928-1 936.
[18]Taflove S C, Hagness. The Finite-Difference Time-Domain Method[M].Amazon: Computational Electro Dynamics:Third Edition, 2005:78.
[19]Kohler J, Moore J C, Isaksson E. Comparison of modeled and observed responses of a glacier snowpack to ground-penetrating radar[J].Annals of Glaciology,2003,37(1):293-297.[20]Sun Zuozhe, Xie Zichu. The recent changes and trend of glacier No.12 at the jokul of Qi Lian mountain
[J]. Chinese Science Bulletin,1980,2(6):366-369.[孙作哲,谢自楚.祁连山大雪山老虎沟12号冰川的近期变化及趋势[J].科学通报, 1981, 26(6): 366-369.]
[21]Du Wentao, Qin Xiang, Liu Yushuo,et al. Variation of the Lao hugou Glacier No.12 in the Qilian Mountains[J].Journal of Glaciology and Geocryology,2008,30(3):373-379.[杜文涛,秦翔,刘宇硕,等.1985—2005年祁连山老虎沟12号冰川变化特征研究[J].冰川冻土, 2008, 30(3):373-379.]
[22]Kovacs A,Anthony J, Gow A, et al. The insitu dielectric constant of polar firn revisited[J].Cold Regions Science and Technology.,1995,23(3):245-256.
[23]Wu Zhen, Zhang Shiqiang, Liu Shiyin. Structural characteristics of the No.12 Glacier in Laohugou valley Qilian mountain based on the ground penetrating radar sounding[J].Advances in Earth Science,2009, 24(10):1 149-1 158.[武震,张世强,刘时银.祁连山老虎沟12号冰川冰下形态特征分析[J].地球科学进展, 2009,24(10):1 149-1 158.]
[24]Kotlyakov V M, Macheret Y Y. Radio echosounding of subpolar glaciers in Svalbard: Some problems and results of Soviet studies[J].Journal of Glaciology,1987, 9:151-159.
[25]Plewes L A, Hubbard B. A review of the use of radio-echo sounding in glaciology[J].Progress in Physical Geography, 2001,25(2): 203-236. 
[26]Andrea Taurisano, Stein Tronstad, Ola Brandt, et al. On the use of ground penetrating radar for detecting and reducing crevasse-hazard in DronningMaud Land Antarctica[J].Cold Regions Science and Technology,2006, 45(3):166-177.
[27]Ola Brandt, Andrea Taurisano, Antonios Giannopoulos,et al. What can GPR tell us about cryoconite holes? 3D FDTD modeling, excavation and field GPR data[J].Cold Regions Science and Technology,2008, 55(1):111-119.
[28]Du Wentao,Qin Xiang,Sun Weijun,et al. Comparison study of the temperature reconstruction in the regions of Mountain glacier-take Lao hugou No.12 Glacier area[J].Journal of Arid Land Resource and Environment (in press).[杜文涛,秦翔,孙维君,等.山地冰川区气温重建比较研究——以祁连山老虎沟冰川区为例[J].干旱区资源与环境(待刊).]
[29]Liu Chaohai, Kang Ersi, Liu Shiyin. Glaciers variation and its runoff effects study at arid lands northwestern China[J].Science in China (Series D),1999, 29 (Suppl.1): 55-62.[刘潮海,康尔泗,刘时银.西北干旱区冰川变化及其径流效应研究[J].中国科学:D缉,1999,29(增刊1):55-62.]
[30]Liu Chaohai, Xie Zichu. Recent changes and the trend forecast in glacier in Qilian Mountains and the trend forecast[J].Chinese Science bulletin,1988,33(8):620-623.[刘潮海,谢自楚.祁连山冰川的近期变化及其趋势预测[J].科学通报, 1988,33(8): 620-623.]
[31]Liu Shiyin, Ding Yongjian, Li Jing. Glaciers in response to recent climate warming in western China[J].Quaternary Sciences,2006,26(5):762-771.
[刘时银,丁永建,李晶.中国西部冰川对近期气候变暖的响应[J].第四纪研究, 2006,26(5):762-771.]

[1] 李育, 刘媛. 干旱区内流河流域长时间尺度水循环重建与模拟——以石羊河流域为例[J]. 地球科学进展, 2017, 32(7): 731-743.
[2] 刘冠州, 梁信忠. 新一代区域气候模式(CWRF)国内应用进展[J]. 地球科学进展, 2017, 32(7): 781-787.
[3] 程根伟, 范继辉, 彭立. 高原山地土壤冻融对径流形成的影响研究进展[J]. 地球科学进展, 2017, 32(10): 1020-1029.
[4] 田彪, 丁明虎, 孙维君, 汤洁, 王叶堂, 张通, 效存德, 张东启. 大气CO研究进展[J]. 地球科学进展, 2017, 32(1): 34-43.
[5] 史培军, 王爱慧, 孙福宝, 李宁, 叶涛, 徐伟, 王静爱, 杨建平, 周洪建. 全球变化人口与经济系统风险形成机制及评估研究[J]. 地球科学进展, 2016, 31(8): 775-781.
[6] 李正泉, 宋丽莉, 马浩, 冯涛, 王阔. 海上风能资源观测与评估研究进展[J]. 地球科学进展, 2016, 31(8): 800-810.
[7] 郝青振, 张人禾, 汪品先, 王斌. 全球季风的多尺度演化[J]. 地球科学进展, 2016, 31(7): 689-699.
[8] 陆雯茜, 吴涧. 气溶胶影响印度夏季风和东亚夏季风的研究进展[J]. 地球科学进展, 2016, 31(3): 248-257.
[9] 栾贻花, 俞永强, 郑伟鹏. 全球高分辨率气候系统模式研究进展[J]. 地球科学进展, 2016, 31(3): 258-268.
[10] 鲁易, 张稳, 李婷婷, 周筠珺. 大气甲烷浓度变化的源汇因素模拟研究进展[J]. 地球科学进展, 2015, 30(7): 763-772.
[11] 孙炜毅, 刘健, 王志远. 过去2000年东亚夏季风降水百年际变化特征及成因的模拟研究[J]. 地球科学进展, 2015, 30(7): 780-790.
[12] 高江波, 吴绍洪, 戴尔阜, 侯文娟. 西南喀斯特地区地表水热过程研究进展与展望[J]. 地球科学进展, 2015, 30(6): 647-653.
[13] 黄擎宇, 刘伟, 张艳秋, 石书缘, 王坤. 白云石化作用及白云岩储层研究进展*[J]. 地球科学进展, 2015, 30(5): 539-551.
[14] 王晓青,刘健,王志远. 过去2000年中国区域温度模拟与重建的对比分析[J]. 地球科学进展, 2015, 30(12): 1318-.
[15] 孙运宝, 赵铁虎, 秦柯. 南海北部白云凹陷沉积压实作用对浅水流超压演化影响数值模拟[J]. 地球科学进展, 2014, 29(9): 1055-1064.