Results 261 to 270 of about 464,727 (307)
Some of the next articles are maybe not open access.
2008
Terrain complexity is an important terrain feature in digital terrain analysis; however, unlike aspect or slope, terrain complexity is an ambiguous terrain feature that until now has had no optimal index to quantify it. The traditional terrain complexity definitions can be classified as statistical, geometrical, and semantic indices.
openaire +1 more source
Terrain complexity is an important terrain feature in digital terrain analysis; however, unlike aspect or slope, terrain complexity is an ambiguous terrain feature that until now has had no optimal index to quantify it. The traditional terrain complexity definitions can be classified as statistical, geometrical, and semantic indices.
openaire +1 more source
Wind profiles over complex terrain
Boundary-Layer Meteorology, 1983A large set of routine wind profiles has been analyzed at three towers, located in various types of complex terrain in New England. After allowing for effects of roughness change, uphill flow and stability, roughness lengths have been estimated. In general, the profiles and roughness lengths could be explained by differences in terrain features and ...
Zhao Ming, H. A. Panofsky, Robert Ball
openaire +1 more source
2012
More and more onshore wind turbines are built away from flat regions near the coasts in complex (i.e. hilly or mountainous) terrain. The most favourite sites in complex terrain are at elevated positions such as hilltops. But sites in complex terrain also bear risks. In Japan, e.g.
openaire +1 more source
More and more onshore wind turbines are built away from flat regions near the coasts in complex (i.e. hilly or mountainous) terrain. The most favourite sites in complex terrain are at elevated positions such as hilltops. But sites in complex terrain also bear risks. In Japan, e.g.
openaire +1 more source
Complex Terrain Extreme Wind Microzonation
Structures 2001, 2001The study of surface wind field may provide the primary input for decision-making in extreme wind simulation, structural design improvement, the understanding of wind induced structural vibration, and many other applications. The numerical model used in the study is a three-dimensional mass-consistent kinematic flow model. The major elements considered
Edmond D. H. Cheng, Jie Shang
openaire +1 more source
Turbulence measurements over complex terrain
Boundary-Layer Meteorology, 1989Horizontal turbulence measurements obtained from 22 wind sensors located on 9 towers in a mountainous coastal area are described and categorized by stability and terrain. Vector wind time series are high-pass filtered, and lateral and longitudinal wind speed variance is calculated for averaging times ranging from 15 s to 2 h.
Charles E. Skupniewicz +2 more
openaire +1 more source
Transport Processes over Complex Terrain
2000The transport of energy, moisture and ozone in the atmospheric boundary layer over heterogeneous terrain was investigated in the context of the field experiment TRACT. An area of 12 km by 10 km in the upper Rhine valley was selected for this study of small scale inhomogeneities. Three powered gliders performed measurements to investigate the horizontal
A. M. Jochum +4 more
openaire +1 more source
Impact Study in Complex Terrain
1981Tracer experiments, using sulphur hexafluorid, SF6, were carried out to study the transport and diffusion of gases released from an aluminium hall in a complex valley-fjord area of western Norway. Data from these experiments were applied to study : 1) wake effects behind the aluminium hall; 2) transport and dispersion on scale of a few kilometers and 3)
K. E. Grønskei, B. Sivertsen
openaire +1 more source
Turbulent Diffusion in Complex Terrain
1982Methods for the assessment of environmental impacts of air contaminants released and dispersed in regions of mountainous and/or hilly terrain have been a subject of increasing debate and interest over the past several years. Among the motivating concerns and issues are the following: · For a variety of economic and practical geographic reasons ...
openaire +1 more source
Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
Wind farms in complex terrain [PDF]
, 1989 Wind energy is considered to be a promising renewable energy source par ticulary for remote areas, like islands and mountainous regions. Two engineering methods have been developed for the design of wind farms in such remote locations. The application of the first method, the numerical COMPL model, is the optimization of the lay-out of wind turbine ...
Oort, H. van +2 more
openaire