Concept

Géomorphométrie

Publications associées (72)

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Probabilistic Terrain Mapping for Mobile Robots With Uncertain Localization

Marco Hutter

Mobile robots build on accurate, real-time mapping with onboard range sensors to achieve autonomous navigation over rough terrain. Existing approaches often rely on absolute localization based on tracking of external geometric or visual features. To circum ...

2018

A close-ridge small-scale atmospheric flow field and its influence on snow accumulation

Michael Lehning, Franziska Gerber, Sebastian Wilhelm Hoch

The rough, steep, and complex terrain in the alpine environment causes a variety of flow patterns such as blocking, speed-up, or flow separation, which influence precipitation, snow deposition, and ultimately snow distribution on the ground. Cloud-terrain ...

Amer Geophysical Union2017

Location Accuracy Evaluation of ToA-Based Lightning Location Systems Over Mountainous Terrain

Marcos Rubinstein, Wolfgang Schulz, Dongshuai Li

In this paper, we analyze the location error of time of arrival (ToA)-based lightning location systems (LLSs) caused by propagation effects over mountainous terrain around the Santis tower located in the Swiss Alps. The study is based on a full-wave three- ...

Amer Geophysical Union2017

A Comparison between the GPM Dual-Frequency Precipitation Radar and Ground-Based Radar Precipitation Rate Estimates in the Swiss Alps and Plateau

Alexis Berne, Marco Gabella, Peter James Speirs

The Global Precipitation Measurement (GPM) mission Dual-Frequency Precipitation Radar (DPR) provides a unique set of three-dimensional radar precipitation estimates across much of the globe. Both terrain and climatic conditions can have a strong influence ...

American Meteorological Society2017

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This paper addresses the effect of accurately mapping spatially heterogeneous drainage densities in high-altitude alpine basins on Rescaled Width Functions (RWFs), used in some applications as a minimalist model of the hydrologic response. The channel netw ...

Wiley-Blackwell2016

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In recent studies of atmospheric turbulent surface exchange in complex terrain, questions arise concerning velocity-sensor tilt corrections and the governing flow equations for coordinate systems aligned with steep slopes. The standard planar-fit method, a ...

2016

On Lightning Electromagnetic Field Propagation Along an Irregular Terrain

Mario Paolone, Marcos Rubinstein, Mohammad Azadifar, Zhaoyang Wang, Stefan Metz, Davide Pavanello, Dongshuai Li, Qilin Zhang

In this paper, we present a theoretical analysis of the propagation effects of lightning electromagnetic fields over a mountainous terrain. The analysis is supported by experimental observations consisting of simultaneous records of lightning currents and ...

Institute of Electrical and Electronics Engineers2016

Snow spatial evolution and distribution in mountainous terrains is difficult to capture since these remote areas are often inaccessible. Nevertheless, they constitute important features for water resources management. To face this issue, the concept of dat ...

2016

Intercomparison of Terrain-Following Coordinate Transformation and Immersed Boundary Methods for Large-Eddy Simulation of Wind Fields over Complex Terrain

Fernando Porté Agel, Jiannong Fang

Accurate modeling of complex terrain, especially steep terrain, in the simulation of wind fields remains a challenge. It is well known that the terrain-following coordinate transformation method (TFCT) generally used in atmospheric flow simulations is rest ...

2016

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We develop several critical concepts that should be considered when interpreting, modelling and designing future experiments for flows over sloping terrain. Vertical buoyancy fluxes in katabatic flows can be positive and a source of turbulent kinetic energ ...

Springer Verlag2016