EMinar 2.23: Seogi Kang - Advancing Remote Sensing Techniques for Groundwater Science & Management скачать в хорошем качестве

EMinar 2.23: Seogi Kang - Advancing Remote Sensing Techniques for Groundwater Science & Management

Groundwater sustainability is at risk. With the latest mega-droughts, major reservoirs in western USA expose their bottom. Lack of surface water increases groundwater pumping particularly in highly-irrigated areas such as the Central Valley of California in USA. Therefore, it is urgent to improve our understanding about groundwater systems for sustainable management of groundwater resources. Monitoring groundwater level and imaging the subsurface hydrogeology in high resolution provides base knowledge for the improved understanding of groundwater systems. Traditional well-based approaches provide useful data for this monitoring and imaging tasks but limited given the poor spatial coverage and density of water wells. The latest enhancement in Earth Imaging approach provides alternative ways for these monitoring and imaging tasks. Working with remote sensing data acquired in the Central Valley, in this presentation, I will first present how airborne electromagnetic (AEM) method can be utilized to image large-scale structure of groundwater systems. Then, I will present a potential of using the InSAR (interferometric synthetic aperture) surface deformation data as a tool for monitoring groundwater level.