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对塔里木盆地塔北地区植被反射波谱特征的系统研究表明,油气区与非油气区相比,同类植被的反射率明显偏低,其差值可达20%;同时还表现出一定的蓝移和吸收峰深度的差异;油气区的植被病变可导致反射峰的消失。植被反射波谱特征的变化进一步证实了烃类微渗漏现象的存在。依据格被波谱的差异,设计了TM图象处理方案,在DIV-KL、CAP-KL变换等图象上,油气区与非油气区表现出明显的色调差异,根据图象信息,发现了几个有待进一步勘探的有利区。
The systematic study of the spectral characteristics of vegetation reflectance in Tabei area in the Tarim Basin shows that the reflectance of similar vegetation is obviously lower than that in non-hydrocarbon area, and the difference is up to 20%. At the same time, some blue-shift Absorption peak depth differences; vegetation in the oil and gas zone lesions can lead to the disappearance of the reflection peak. The changes of spectral characteristics of vegetation reflect the existence of hydrocarbon microleakage. According to the differences of the spectrums, the TM image processing scheme is designed. On the DIV-KL and CAP-KL transform images, the hue and non-oil-gas regions show obvious hue differences. Based on the image information, A favorable area for further exploration.