介绍了天然气水合物的遥感探测方法，即：首先选择适当的ETM+、ASTER以及Quickbird等遥感图像，分析可见光、短波红外、热红外波段的影像特征，反演地表温度；然后结合野外调查和前人资料，寻找天然气水合物的直接和间接遥感解译标志，进行遥感解译。研究结果表明，青藏高原天然气远景区出现的几种遥感解译标志包括：地表上空高温异常(尤其是水体上空)、泥火山、沼泽地水体中大量气泡和棕黄色沉淀物，以及碳酸盐化、粘土化等指示信息。本研究为进一步开展大规模天然气水合物遥感调查和圈定靶区提供了基础方法。%A remote sensing detection method for natural gas hydrate (NGH) has been introduced in this paper. Appropriate remote sensing images, such as ETM+, ASTER and Quickbird were selected, image features from visible, shortwave infrared to thermal infrared bands were analyzed, surface temperature was inverted, and then direct/indirect remote sensing signs of NGH were searched in combination with field investigation and the previous data, comprehensive interpretation of all images was conducted. The research results show that in NGH prospect areas of Qinghai-Tibet plateau there are several remote sensing interpretation signs including high temperature anomalies near the ground surface(especially over water bodies) and mud volcano, a large number of bubbles and tan sediment in marsh water, and carbonatization, clayization. The research will be helpful for further large-scale remote sensing survey of NGH and delineation of the target areas.
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