Integrated remote sensing of bathymetry and onshore topography for asset inspection, hydrology modelling and hazard assessment

摘要

Recent integration of multibeam bathymetric sonar and mobile laser scanning (LiDAR) have opened the door to a versatile and cost-effective method for remote sensing bathymetry, with riparian and onshore topographic features at the same time. These advances have made it possible to build a dataset that extends from the bed of a watercourse through the riparian zone and even into the flood plain from a single waterborne sensor platform. This is a major milestone for practical and cost-effective evaluation of both anthropogenic and natural waterways, as well as near-shore coastal regions. Such evaluations include accurate flood inundation modelling, environmental studies, geohazards identification, silt/sediment dynamics (scour and accumulation), slope stability/landslide investigation (including seamless evaluation of subaerial and underwater slope failure features) and bottom surface material hardness and classification.