A Dunantuli-kozéphegység forrasainak természetes hoteljesitménye. (Natural thermal power of springs in the Transdanubian Mountains)
The heated karst water of the Transdanubian Mountains issues in springs on the margins. From the data for the discharges and temperatures of these springs the natural thermal power is calculated (in kW). Fundamental information for 83 springs
Assessment of wind power potential for two contrasting coastlines of South Africa using a numerical model
A two-dimensional numerical model is used to predict near surface wind velocities, and consequently wind power, for five distinct synoptic regimes for contrasting east and west coasts of South Africa. The model results suggest that no one solution
Stream power and shear stress estimates derived from bankfull discharge and bed-material size data suggest that higher bedload transport rates and larger bedload particle sizes exist in streams draining crystalline rocks than in streams draining
sedimentary terrane. It appears that source-area lithology, by controlling discharge production, also influences stream power, bedload transport capabilities, and therefore total amounts of bedload transport.
Observations from Taylor Valley suggest that the wedging effect of sand particles, packed by powerful winds into cracks in rocks, may act as a weathering mechanism. Discussion.
The spacing of sand dunes and draas (dune groups) is one parameter that can be used to estimate wind velocity and available wind power. Measurements of spacings can be made directly from LANDSAT imagery or aerial photography. Fourier analysis
). These values may then be used to estimate wind velocity at any other height above the surface or to estimate available wind power.
Vector analysis was applied to rainfall statistics for 200 stations in the Transvaal to show seasonality. The results were compared with earlier analyses and vector analysis was shown to be the most powerful technique. - (AJC)