D-InSAR技术在长白山天池火山形变监测中的误差分析与应用
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摘要
选取长白山天池火山区15景JERS-1 L波段SAR存档数据,利用二轨法进行SAR差分干涉处理.最终用4景JERS-1数据获取了覆盖相似时间段的3幅D-InSAR形变图,提取了研究区1994～1998年的地表形变场.研究表明:远离天池火山的平坦区域形变微弱;从天池火山的山脚向上到2000～2200 m高程处,表现为逐渐增强的隆升形变,最高形变速率达到LOS(视线向)5 mm/a.尽管没有同期地面实测资料验证,但研究结论与2002～2005年的一等水准测量结果及地震活动性具有定性的一致性;与Kim的同期InSAR研究具有定量的可比性.在时间上向前延伸了对长白山天池火山的形变监测时段,为研究长白山天池火山活动状态提供了更多的形变信息.
In this study we applied two-pass D-InSAR technique to process 15 JERS-1 SAR data. The final deformation field of Changbaishan Tianchi volcano from 1994 to 1998 was expressed in 3 displacement maps which were obtained from 4 JERS-1 SAR data.The stuty achieves the following: firstly, the flat region far away from the summit of Changbaishan Tianchi volcano shows no obvious deformation;secondly, there is an increasing upward deformation from the foot of the mountain up to the areas at the elevation about 2000～2200 m, and the maximum uplift rate is 5 mm/a.Although the estimated inflation rate is not confirmed due to the lack of field work data, the results accord with the leveling studies from 2002 to 2005 and the seismic activity between 1994 and 1998.In addition, the largest deformation rate of 5mm/a is close to the result of Kim's study who also applied InSAR technique using several SAR data acquired in the same period.This study extends the deformation monitoring period of Changbaishan Tianchi volcano for several years, and provides more displacement information for future studies.
In this study we applied two-pass D-InSAR technique to process 15 JERS-1 SAR data. The final deformation field of Changbaishan Tianchi volcano from 1994 to 1998 was expressed in 3 displacement maps which were obtained from 4 JERS-1 SAR data.The stuty achieves the following: firstly, the flat region far away from the summit of Changbaishan Tianchi volcano shows no obvious deformation;secondly, there is an increasing upward deformation from the foot of the mountain up to the areas at the elevation about 2000～2200 m, and the maximum uplift rate is 5 mm/a.Although the estimated inflation rate is not confirmed due to the lack of field work data, the results accord with the leveling studies from 2002 to 2005 and the seismic activity between 1994 and 1998.In addition, the largest deformation rate of 5mm/a is close to the result of Kim's study who also applied InSAR technique using several SAR data acquired in the same period.This study extends the deformation monitoring period of Changbaishan Tianchi volcano for several years, and provides more displacement information for future studies.
引文
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[10] 张先康,张成科,赵金仁等.长白山天池火山区岩浆系统深部结构的深地震测深研究.地震学报.2002,24(2) :135～143 Zhang X K,Zhang C K,Zhao J R,et al.Deep seismic sounding investigation into the deep structure of the magma system in Changbaishan Tianchi volconic region.Acta Seismologica Sinica.(in Chinese).2002,24(2) :135～143
[11] 马明志,张兴科,猴立平.长白山天池火山地震类型与地震分别.地震地磁观测与研究.1996,17(6) :39～44 Ma M Z,Zhang X K,Hou L P.Volcanic earthquake types and distributior at Tianchi,Changbai Shan.Seismological and Geomagnetic Observation and Research(in Chinese).1996,17(6) :39～44
[12] 刘一鸣,张东宁,曹学峰等.长白山天池火山地震观测与应力状态的初步研究.地震地磁观测与研究.1 998,19(3) :48～53 Liu Y M,Zhang D N,Cao X F,et al.Field observation of volcanic earthquakes and initial research for stress condition of Changbaishan Tianchi volcano.Seismological and Geomagnetic Observation and Research(in Chinese).1998,19(3) :48～53
[13] 吴建平,明跃红,刘一鸣等.2002年8月20日长白山天池火山小震震群研究.地震地磁观测与研究.2003,24(4) :1～8 Wu J P,Ming Y H,Liu Y M,et al.A study on the micro-earthquake swarm occurred on Aug.20,2002 in Changbaishan Tianchi volcano.Seismological and Geomagnetic Observation and Research(in Chinese),2003,24(4) :1～8
[14] 吴建平,明跃红,张恒荣等.2002年夏季长白山天池火山区的地震活动研究.地球物理学报.2005,48(3) :621～628 Wu J P,Ming Y H,Zhang H R,et al.Seismic activity at the Changbaishan Tianchi volcano in the summer of 2002． Chinese J.Geophys.(in Chinese),2005,48(3) :621～628
[15] 董鸿闻,白尚东,王文利.长白山地区地壳垂直运动的监测问题.东北测绘.2002,25(4) :37～39 Dong H W,Bai S D,Wang W L.The monitoring of vertical crustal movement in Changbaishan area.Northeast Surveying and Mapping(in Chinese).2002,25(4) :37～39
[16] 崔笃信,王庆良,李克等.长白山天池火山近期形变场演化过程分析.地球物理学报.2007,50(6) :1731～1739 Cui D X,Wang Q L,Li K,et al.Analysis of recent deformation of Changbaishan Tianchi volcano.Chinese J. Geophys.(in Chinese).2007,50(6) :1731～1739
[17] Kim S W,Won J S.Slow deformation of Mt.Baekdu stratovolcano observed by satellite radar interferometry.2003,Proc.FRINGE 2003 workshop,ESA-ESRINhttp://earth.esa.int/workshops/fringe03/proceedings/posters/57_kim.pdf,March 5,2007
[18] 陈俊勇.对SRTM3和GTOPO30地形数据质量的评估.武汉大学学报信息科学版.2005,30(11) :941～944 Chen J Y.Evaluation of topographic data from SRTM3 and GTOPO30． Geomatics and Information Science of Wuhan University(in Chinese),2005,30(11) :941～944
[19] 詹蕾.SRTM DEM的精度评价及其适用性研究--以在陕西省的实验为例[硕士论文].南京:南京师范大学地理科学学院,2008 Zhan L.Evaluation of SRTM DEMs’ accuracy and investigation on it's applicability--A case study in Shaanxi Province[Master's thesis](in Chinese).Nanjing:College of Geographical Science in Nanjing Normal University,2008
[20] 王超,张红,刘智.星载合成孔径雷达干涉测量.北京:科学出版社,2002 Wang C,Zhang H,Liu Z.Spaceborne Synthetic Aperture Radar Interferometry(in Chinese).Beijing:Science Press,2002
[21] 王华.InSAR大气延迟误差分析.地理空间信息.2009,7(2) :9～11 Wang H.Analysis on InSAR atmospheric delay errors.Geospatial Information(in Chinese).2009,7(2) :9～11
[2] 刘若新,魏海泉,李继泰等.长白山天池火山近代喷发.北京:科学出版社,1998Liu R X,Wei H Q,Li J T,et al.Modern eruption of Changbaishan Tianchi volcano(in Chinese).Beijing:Science Press,1998
[3] 陈国浒.长白山天池火山形变监测与模拟研究[硕士论文].北京:中国地震局地质研究所,2007 Chen G H.Deformation monitoring and simulation research of Mt.Changbai Tianchi volcano.[Master' s thesis](in Chinese).Beijing:Institute of Geology,China Earthquake Administration,2007
[4] 汤吉,刘铁胜,江钊等.长白山天池火山区大地电磁测深初步观测.地震地质.1997,19(2) :164～170 Tang J,Liu T S,Jiang Z,et al.Preliminary observation of the Tianchi volcano area in Changbaishan mountain by MT method.Seismol.Geol.(in Chinese).1997,19(2) :164～170
[5] Massonet D,Briole P,Arnaud.Deflation of Mount Etna Monitored by spaceborne radar interferometry.Nature,1995,375:567～570
[6] Lu Z,Wicks C,Dzurisin D,et al.Magmatic inflation at a dormant stratovolcano:1996～1998 activity at Mount Peulik volcano,Alaska,revealed by satellite radar interferometry.J.Geophys.Res.,2002,107(B7) ,2134,doi:10． 1029/2001JB000471
[7] Hooper A,Segall A,Zebker H.Persistent scatterer interferometric synthetic aperture radar for crustal deformation analysis,with application to Volcan Alcedo,Galapagos.J. Geophys.Res.,2007,112(B07407) ,1～27
[8] 郭履灿,马石庄,张禹慎.应用地震CT技术研究长白山火山的岩浆囊.CT理论与应用研究.1996,5(1) :47～52 Guo L C,Ma S Z,Zhang Y S.Research on “ Magma Chamber” of Changbai mountain volcanoes by means of seismic tomography.CT Theory and Application.(in Chinese).1996,5(1) :47～52
[9] 汤吉,邓前辉,赵国泽等.长白山天池火山区电性结构和岩浆系统.地震地质.2001,23(2) 191～200 Tang J,Deng Q H,Zhao G Z,et al.Electric conductivity and magma chamber at the Tianchi volcano area in Changbaishan mountain.Seismol.Geol.(in Chinese).2001,23(2) 191～200
[10] 张先康,张成科,赵金仁等.长白山天池火山区岩浆系统深部结构的深地震测深研究.地震学报.2002,24(2) :135～143 Zhang X K,Zhang C K,Zhao J R,et al.Deep seismic sounding investigation into the deep structure of the magma system in Changbaishan Tianchi volconic region.Acta Seismologica Sinica.(in Chinese).2002,24(2) :135～143
[11] 马明志,张兴科,猴立平.长白山天池火山地震类型与地震分别.地震地磁观测与研究.1996,17(6) :39～44 Ma M Z,Zhang X K,Hou L P.Volcanic earthquake types and distributior at Tianchi,Changbai Shan.Seismological and Geomagnetic Observation and Research(in Chinese).1996,17(6) :39～44
[12] 刘一鸣,张东宁,曹学峰等.长白山天池火山地震观测与应力状态的初步研究.地震地磁观测与研究.1 998,19(3) :48～53 Liu Y M,Zhang D N,Cao X F,et al.Field observation of volcanic earthquakes and initial research for stress condition of Changbaishan Tianchi volcano.Seismological and Geomagnetic Observation and Research(in Chinese).1998,19(3) :48～53
[13] 吴建平,明跃红,刘一鸣等.2002年8月20日长白山天池火山小震震群研究.地震地磁观测与研究.2003,24(4) :1～8 Wu J P,Ming Y H,Liu Y M,et al.A study on the micro-earthquake swarm occurred on Aug.20,2002 in Changbaishan Tianchi volcano.Seismological and Geomagnetic Observation and Research(in Chinese),2003,24(4) :1～8
[14] 吴建平,明跃红,张恒荣等.2002年夏季长白山天池火山区的地震活动研究.地球物理学报.2005,48(3) :621～628 Wu J P,Ming Y H,Zhang H R,et al.Seismic activity at the Changbaishan Tianchi volcano in the summer of 2002． Chinese J.Geophys.(in Chinese),2005,48(3) :621～628
[15] 董鸿闻,白尚东,王文利.长白山地区地壳垂直运动的监测问题.东北测绘.2002,25(4) :37～39 Dong H W,Bai S D,Wang W L.The monitoring of vertical crustal movement in Changbaishan area.Northeast Surveying and Mapping(in Chinese).2002,25(4) :37～39
[16] 崔笃信,王庆良,李克等.长白山天池火山近期形变场演化过程分析.地球物理学报.2007,50(6) :1731～1739 Cui D X,Wang Q L,Li K,et al.Analysis of recent deformation of Changbaishan Tianchi volcano.Chinese J. Geophys.(in Chinese).2007,50(6) :1731～1739
[17] Kim S W,Won J S.Slow deformation of Mt.Baekdu stratovolcano observed by satellite radar interferometry.2003,Proc.FRINGE 2003 workshop,ESA-ESRINhttp://earth.esa.int/workshops/fringe03/proceedings/posters/57_kim.pdf,March 5,2007
[18] 陈俊勇.对SRTM3和GTOPO30地形数据质量的评估.武汉大学学报信息科学版.2005,30(11) :941～944 Chen J Y.Evaluation of topographic data from SRTM3 and GTOPO30． Geomatics and Information Science of Wuhan University(in Chinese),2005,30(11) :941～944
[19] 詹蕾.SRTM DEM的精度评价及其适用性研究--以在陕西省的实验为例[硕士论文].南京:南京师范大学地理科学学院,2008 Zhan L.Evaluation of SRTM DEMs’ accuracy and investigation on it's applicability--A case study in Shaanxi Province[Master's thesis](in Chinese).Nanjing:College of Geographical Science in Nanjing Normal University,2008
[20] 王超,张红,刘智.星载合成孔径雷达干涉测量.北京:科学出版社,2002 Wang C,Zhang H,Liu Z.Spaceborne Synthetic Aperture Radar Interferometry(in Chinese).Beijing:Science Press,2002
[21] 王华.InSAR大气延迟误差分析.地理空间信息.2009,7(2) :9～11 Wang H.Analysis on InSAR atmospheric delay errors.Geospatial Information(in Chinese).2009,7(2) :9～11
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