基于烃微渗漏的航空高光谱遥感蚀变信息提取

Alteration Information Extraction of Airborne Hyperspectral Remote Sensing Based on Hydrocarbon Micro-seepage

随着遥感技术的发展,运用烃类微渗漏遥感探测进行直接找油成为油气勘探的发展趋势。国内外众多学者的研究表明,烃类微渗漏会造成岩石、土壤和植被的异常并在遥感影像上得到表现。基于油气烃微渗漏理论,研究了土壤吸附烃、黏土矿物、碳酸盐矿物和二三价铁离子作为识别油气信息的光谱特征,通过对吉木萨尔地区SASI与CASI航空高光谱遥感数据进行处理与分析,使用混合协调匹配滤波(MTMF)方法完成了矿物蚀变填图,提取到研究区烃类微渗漏异常信息,为下一步的野外实地勘探提供了有效资料。

With the development of remote sensing technology,there exists a new trend in oil-gas exploration field,that is,a direct oil detection with applying hydrocarbon micro-seepage remote sensing detection technology.According to the research made by many scholars from domestic and overseas,we could see that hydrocarbon microseepage can lead abnormities to rocks,soils and vegetation,and these abnormities can express themselves on remote-sensing image.Based on the oil-gas hydrocarbon micro-seepage theory,this paper did a lot of research on spectral signature of soil hydrocarbon adsorption,clay minerals,carbonate minerals,ferrous iron ion and ferric iron ion when they used to recognize oil and gas information.By means of processing and analyzing SASI and CASI airborne hyperspectral remote sensing data in Jimusar area,and then we use MTMF method to complete the mineral alteration mapping,thus enable us to extract the abnormal information of hydrocarbon micro-seepage in this research area,these abnormal information provide us an effective material for following exploration at site.