IRS-P5影像提取DEM技术在大青山山前断裂古地震研究的应用
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摘要
以内蒙古大青山山前断裂中间三段的IRS-P5全色立体像对为例生成DEM,利用检查点法对DEM进行精度评定,DEM的高程精度能达到1∶10 000地形图山地和高山地测图中误差要求。在DEM数据中提取了横穿断裂的25条冲沟,并在冲沟纵剖面中提取了该断裂在全新世活动形成的裂点。在从左到右三段断裂上升盘的冲沟中分别识别出6、5和3级裂点序列。通过土右西段和土左西段最新一级裂点后退距离和公元849年地震距今时间,分别计算了这两段上各条冲沟最新一级裂点的后退速率,并以此速率作为各条冲沟裂点的后退速率。利用土右西和土左西两条冲沟最新一级裂点的后退速率平均值作为毕克齐段冲沟裂点后退速率。结合三段上各条冲沟裂点后退距离,分别得到断裂上升盘冲沟各级裂点形成时间,从而得到三段断裂全新世古地震事件序列。本研究得到的大青山山前断裂中间三段全新世古地震序列与前人通过探槽开挖和利用断层下降盘全新世古土壤揭露的古地震序列能够很好地对比。
A case DEM was extracted from IRS-P5 stereo images of middle three segments(Tuyou,Tuzuo and Bikeqi) in Daqingshan piedmont fault,and this DEM's vertical accuracy was tested to meet hilly-area and mountainous-region requirement of 1∶ 10,000 topographic maps.Twenty-five gullies across the fault on the footwall have been extracted from this DEM,and the knickpoints caused by fault activities in Holocene have further been extracted from profiles of gullies,and the six-,five-and three-ranks of knickpoints are identified in the gullies from west to east.The newest rank knickpoints in the Tuyou and Tuzuo segments are regarded as those caused by the A.D.849 earthquake to get their retreat rates.The retreat rate of the newest knickpoint in each gully is also considered as that of other points in the same gully;the average retreat-rate value of the newest rank knickpoints in the Tuyou and Tuzuo segments is considered as that of the knickpoints in the Bikeqi segment;then the formation time of the six-,five-and three-ranks of knickpoints in the three segments is computed combining with the retreat distances of knickpoints on the gullies,thus the paleo-earthquake series in the study area in Holocene have been obtained.These paleo-earthquake series are close to the results that are derived from trench techniques and Holocene paleosols in paleo-alluvial-pluvial fans in previous studies.
引文
[1]赵巍,杨静,王海燕,等.基于IRS-P5卫星立体影像的地形图测绘试验[J].测绘标准化,2008,24(2):34-38.
    [2]党军宏,孙美萍.基于IRS-P5卫星影像的DEM制作与方法研究[J].山西建筑,2012,38(3):218-219.
    [3]赵利平,刘凤德,李健,等.印度测图卫星IRS-P5定位精度初步研究[J].遥感应用,2007(2):28-32.
    [4]王国昌.卫星影像制图在铁路勘测设计中的应用研究[J].铁道工程学报,2010(2):14-31.
    [5]邸国辉,程崇木,刘传生,等.基于IRS-P5卫星影像测图的关键技术研究[J].地理空间信息,2012,10(3):27-30,53.
    [6]范兰,赵巍,陈杰,等.P5卫星影像立体测图的试验和分析[J].测绘通报,2013(2):54-58.
    [7]范兴旺,翁永玲,胡伍生,等.IRS-P5立体像对提取DEM及精度评价[J].遥感技术与应用,2010,25(4):547-551.
    [8]Burnett A W,Schumm S A.Alluvial-river response to neotectonic deformation in Louisiana and Mississippi[J].Science,1983,222:49-50.
    [9]Ouchi S.Response of alluvial rivers to slow active tectonic movement[J].Geological Society of America Bulletin,1985,96:504-515.
    [10]Snow R S,Slingerland R L.Stream profile adjustment to crustal warping:nonlinear results from a simple model[J].Journal of Geology,1990,98:699-708.
    [11]Burbank D W,Anderson R S.Tectonic Geomorphology[M].Massachusetts:Blackwell Science,2001:1-50.
    [12]曹伯勋.地貌学与第四纪地质学[M].武汉:中国地质大学出版社,1995:1-100.
    [13]杨景春,郭正堂,曹家栋.用地貌学方法研究贺兰山山前断层全新世活动状况[J].地震地质,1985,7(4):23-31.
    [14]毕丽思,何宏林,徐岳仁,等.基于高分辨率DEM的裂点序列提取和古地震序列的识别[J].地震地质,2011,33(4):963-977.
    [15]张彬,陆远忠,刘耀炜,等.2000年苏门答腊Ms8.0地震对缅甸Ms6.5地震动态应力触发作用及影响因素探讨[J].吉林大学学报:地球科学版,2012,42(增刊):399-406.
    [16]吴卫民,李克,马保起,等.大青山山前断裂带大型组合探槽的全新世古地震研究[M]//中国地震局地质研究所.活动断裂研究(4).北京:地震出版社,1995:123-132.
    [17]聂宗笙,江娃利,吴卫民.内蒙古大青山山前断裂带西段全新世古地震的大探槽研究[M]//中国地震局地质研究所.活动断裂研究(5).北京:地震出版社,1996:125-135.
    [18]冉勇康,张培震,胡博,等.大青山山前断裂呼和浩特段晚第四纪古地震活动历史[J].中国地震,2002,28(1):15-27.
    [19]冉勇康,张培震,陈立春.河套断陷带大青山山前断裂晚第四纪古地震完整性研究[J].地学前缘,2003,10(增刊):207-216.
    [20]何仲太,马保起,卢海峰.大青山山前活动断裂带分段与潜在震源区划分[J].地震地质,2007,29(4):765-775.
    [21]孙昌斌,谢新生,江娃利.河流冲沟裂点展布对全新世断层活动事件的响应——以山西交城断裂为例[J].地震地质,2012,34(2):254-268.
    [22]Hayakawa Y,Oguchi T.DEM-based identification of fluvial knickzones and its application to Japanese mountain rivers[J].Geomorphology,2006,78:90-106.
    [23]孙加林.鄂尔多斯块体北部边缘发生了强震的危险性[J].西北地震学报,1985,7(增刊):13-23.
    [24]国家地震局《鄂尔多斯周缘活动断裂系》课题组.鄂尔多斯周缘活动断裂系[M].北京:地震出版社,1988:1-50.
    [25]聂宗笙,李克.公元849年内蒙古河套地区大震的讨论[M]//中国地震局地质研究所.中国历史地震文集(2).北京:地震出版社,1991:125-127.
    [26]曹刚.内蒙古地震研究[M].北京:地震出版社,2001:3-5.
    [27]聂宗笙,吴卫民,马保起.公元849年内蒙古包头东地震地表破裂带及地震参数讨论[J].地震学报,2010,32(1):94-107.
    [28]江娃利,肖振敏,王焕贞,等.内蒙古大青山山前活动断裂带的地震破裂分段特征[J].地震地质,2001,23(1):24-34.
    [29]He Zhongtai,Ma Baoqi,Hou Jianjun,et al.Study on Paleoearthquakes in Daqingshan Piedmont Fault,Inner Mongolia of China by Using Holocene Paleosols on the Paleo-alluvial-pluvial Fans[J].Zeitschrift für Geomorphologie,2012,56(3):301-316.

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