Characteristic of multispectral images and well yields of hydrogeological units in fracture bedrock, Taiwan

摘要

To continue the groundwater monitoring networks in the plain areas for further demand of clean water resources, the groundwater exploration of mountainous regions becomes a crucial issue in Taiwan. In this study, 75 boreholes were drilled for conducting investigation by the integration of subsurface exploration technologies, including drilling, core inspection, geophysical logging, and hydraulic testing. Besides, 48 groundwater monitoring wells were constructed with pumping testing. For further understanding the characteristic of potential groundwater areas, analysis of hydrogeological unit (HGU) and Landsat imagery layer stacking were considered. Results show that the trend of potential well yields in each rock type unit is related with features extracted from Landsat images.