Nationwide Point Cloud—The Future Topographic Core Data

Nationwide Point Cloud - The Future Topographic Core Data

Topographic databases maintained by national mapping agencies are currently the most common nationwide data sets in geo-information. The application of laser scanning as source data for surveying is increasing. Along with this development, several analysis methods that utilize dense point clouds have been introduced. We present the concept of producing a dense nationwide point cloud, produced f...

Topographic Core-Mantle coupling in Geodynamo modeling

A 3-dimensional, fully nonlinear numerical geodynamo model is used to study the core-mantle coupling arising from a non-hydrostatic pressure field acting on an aspherical core-mantle boundary (CMB) based on a seismological model. The simulation results demonstrate that the topographic coupling torque is close to being proportional to the square of the amplitude of the CMB topography. We conclud...

Control Point Surveying and Topographic Mapping

From Nationwide Point Clouds to Nationwide 3D Landscape Models

While an increasing number of cities is using 3D geo-information, applications like infrastructure planning and the assessment of environmental impact by noise, wind and air pollution require 3D geo-information over areas covering multiple municipalities. To enable such applications a national 3D landscape model has been produced in the Netherlands by automated fusion of the national 1:10,000 s...

GML for exchanging topographic data

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