We propose a new approach, based on dynamic animation, to simulate geomorphological events such as erosion, sediment transportation and deposition. It relies on a generalized map representation of different geological layers. The topological evolution of these layers is driven by a set of displacements applied onto the vertices. The topological consistency of the model is guaranteed by a collis...

Within a digital map service environment, the rapid growth of Spatial Big-Data is driving new requirements for effective mechanisms for massive online vector map tile processing. The emergence of Not Only SQL (NoSQL) databases has resulted in a new data storage and management model for scalable spatial data deployments and fast tracking. They better suit the scenario of high-volume, low-latency...

Many counties in southwestern China were devastated by the Wenchuan earthquake, and this earthquake also induced several geological hazards. Therefore, evaluation of eco-geological environment disaster area is essential for county restoration ecological remediation. This research considers Pingwu County, which located 89 km from epicenter as study to evaluate carrying capacity. First, three ind...

The National Map is the U.S. Geological Survey’s (USGS) next-generation topographic mapping product. This concept aims to achieve a more effective and regenerative public mapping program through local participation, inter-agency data sharing, and integration. This ambitious endeavor faces many significant challenges to its implementation, however. The Federal Geographic Data Committee (FGDC) wa...

The Linfen–Yuncheng basin is an area prone to geological disasters, such as surface subsidence, ground fissuring, fault activity, and earthquakes. For the purpose of disaster prevention and mitigation, Interferometric Synthetic Aperture Radar (InSAR) was used to map ground deformation in this area. After the ground deformation characteristics over the Linfen–Yuncheng basin were obtained, the cr...