CAJ | 학술논문

以汶川县为研究对象，选取2009年landsat5TM影像为数据源，研究地质灾害及其背景地物在TM影像的光谱特征及其波段间的相互运算。研究发现，短波红外波段（TM5）和热红外波段（TM6）是提取地质灾害信息的关键波段，构建了决策树地质灾害提取模型（TM5-TM6）/（TM5+TM6），实现了对地质灾害信息提取，对结果进行了精度评价，kappa系数为0.92，生产者精度为93.2%、用户精度为97.3%，满足要求。解译结果中发现，地质灾害的分布与区内地质构造密切相关，随距断裂带距离的增加而减少、呈线性分布，且84.5%集中分布在距断裂带0～5km区域内，建议震区公路选址应尽量绕避该区域。
이문천현위연구대상，선취2009년landsat5TM영상위수거원，연구지질재해급기배경지물재TM영상적광보특정급기파단간적상호운산。연구발현，단파홍외파단（TM5）화열홍외파단（TM6）시제취지질재해신식적관건파단，구건료결책수지질재해제취모형（TM5-TM6）/（TM5+TM6），실현료대지질재해신식제취，대결과진행료정도평개，kappa계수위0.92，생산자정도위93.2%、용호정도위97.3%，만족요구。해역결과중발현，지질재해적분포여구내지질구조밀절상관，수거단렬대거리적증가이감소、정선성분포，차84.5%집중분포재거단렬대0～5km구역내，건의진구공로선지응진량요피해구역。
Taking Wenchuan as study area, make research on the bands operation and finding out the spectral characteristics of geological hazard and other objects in landsat5 TM remote sencing image. The research shows that shortwave infrared band (TM5) and thermal infrared band (TM6) are the key bands for extracting the information of geological disasters. Based on this ,construct a decision tree model ((TM5-TM6)/(TM5+TM6)) to extract geological hazard information and make accuracy evaluation for the results with a kappa coefficient of 0.92, the producer accuracy of 93.2% and an users accuracy of 97.3%, which meet the requirements. Disaster interpreting results shows that 84.5%geological disaster area are concentrated in the region of 0~5km away from the fault zone. The distribution of geological disasters is linearly, which is closely related to the geological structure of the region, and decreases with increasing distance from the fault. Road location around the earthquake zone should be avoided in these regions.