Abstract
Abstract. Assessment of geological hazards in urban areas must integrate geospatial and temporal data, such as complex geology, highly irregular ground surface, fluctuations in pore-water pressure, surface displacements and environmental factors. Site investigation for geological hazard studies frequently produces surface maps, geological information from borehole data, laboratory test results and monitoring data. Specialized web-based GIS tools were created to facilitate geospatial analyses of displacement data from inclinometers and pore pressure data from piezometers as well as geological information from boreholes and surface mapping. A variety of visual aids in terms of graphs or charts can be created in the web page on the fly, e.g. displacement vector, time displacement and summaries of geotechnical testing results. High-resolution satellite or aerial images and LiDAR data can also be effectively managed, facilitating fast and preliminary hazard assessment. A preliminary geohazard assessment using the web based tools was carried out for the Town of Peace River.
Highlights
Rapid urban development over the past 50 years has increased the risk of communities to geohazards such as landslides, subsidence, rock falls, avalanches, frost, river icejams, earthquakes, and flooding
The challenge is to synthesize this data into a common format that can be readily accessed by geo-engineering professionals
In this paper we describe a web-based geographic information system (GIS) framework that was used to managing various kinds of data related to landslides in the Town of Peace River, Canada
Summary
Rapid urban development over the past 50 years has increased the risk of communities to geohazards such as landslides, subsidence, rock falls, avalanches, frost, river icejams, earthquakes, and flooding Such events can have devastating consequences for any municipality as infrastructure can be severely damaged. For many communities assessing risk associated with geological hazards is challenging, as there are often no formal guidelines for such procedures Their assessment demands a thorough understanding of site characterization technology and complex geological processes in spatial and temporal environments (Tsai and Frost, 1999; Parsons and Frost, 2002). New technologies are needed to facilitate synthesis of data from site investigation and characterization for geological hazard assessment in urban areas (Culshaw, 2005). The web-based GIS can effectively manage high resolution satellite or aerial images and LiDAR data
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