摘要
以ETM、SPOT5和Quickbird为主要信息源,在哈拉阿拉特山地区开展1∶5万区域地质填图,对该地区的地层单元、中—小规模地质体(如岩脉、小岩体和火山口)和地质构造特征进行了详细地遥感解译分析,并开展了大量的遥感野外地质调查验证。结果表明,采用彩色空间HSV变换融合法将SPOT5高精度遥感图像数据与ETM图像数据融合,保持了波谱信息的一致性;选择主成分PC1、2、3之SPOT51~4、主成分PC1、2、3之ETM 1~7、主成分PC6、5、4之ETM 1~7假彩色合成的图像,清晰地显示了主要岩性地层单元界线的多光谱信息,提高了遥感影像底图的信息量和易解译程度。将野外采集的地质资料与Quickbird高精度遥感图像相结合,可准确而快速地勾绘地质界线,显著提高了对构造和地质体边界勾绘的精度。ETM、SPOT5和Quickbird数据综合遥感解译成果很好地指导了哈拉阿拉特山地区野外地质调查工作,高分辨率遥感影像准确解译中—小规模地质体在该区域地质调查工作中起到了关键作用。
Regional geological mapping at 1∶50,000 scale was carried out in the Urho area of the Hala’alate Mountains in west Junggar,Xinjiang.Based on field investigation and referring to the regional geological survey and previous research results in recent years,we made a detailed remote sensing interpretation and analysis on the stratigraphic units,small and medium-sized geological bodies(dikes,small rock bodies,craters)and geological structures of the Hala’alate Mountains,and conducted detailed remote sensing field survey verifications.Following findings are revealed by the study results.In the process of making remote sensing image base map,the color space HSV transform fusion method is used to fuse SPOT5 high-precision remote sensing image data and ETM image data,and the fused image maintains the consistency of spectral information;SPOT51~4 of PC(principal component)1,2 and 3,ETM 1~7 of PC1,2 and 3,ETM 1~7 of PC 6,5,and 4 are processed into pseudo color synthetic images,respectively.After principal component transformation,the false color composite image concentrate on the multispectral information useful for regional geological survey and eliminate noise information.It improves the information content and interpretation complexity of remote sensing image base map.The combination of various detailed geological data collected in the field with Quickbird high-precision remote sensing images can accurately and quickly delineate the geological boundary,significantly improving the accuracy of structural and geological body boundary delineation.The results of comprehensive remote sensing interpretation of multi-source remote sensing data well guide the field geological survey work in the Urho area of the Hala’alate mountains in west Junggar,Xinjiang,and high-resolution remote sensing images play a key role in the accurate interpretation of small and medium-sized geological bodies in the geological survey of the region.
作者
程三友
王曦
李永军
王冉
CHENG Sanyou;WANG Xi;LI Yongjun;WANG Ran(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,Shaanxi,China)
出处
《地质力学学报》
CSCD
北大核心
2022年第1期143-154,共12页
Journal of Geomechanics
基金
中国地质调查局地质调查项目(DD1212011220619,DD20190069)
中央高校基本科研业务费专项资金(300102279105)。
