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991.
V. V. Efimov V. N. Belokopytov A. E. Anisimov 《Russian Meteorology and Hydrology》2012,37(11-12):769-774
Presented are the estimates of precipitation amount and evaporation for the Black Sea basin based on the data of numerical regional reanalysis. The spatial distribution of considered variables is compared with the results obtained before using the method of extrapolation of measurements at the coastal meteorological stations. The computed water balance components of the Black Sea compared with the available literature data are used for obtaining the estimate of the mean water discharge in the Bosphorus. 相似文献
992.
A. E. Efimov 《Russian Meteorology and Hydrology》2010,35(9):641-649
The method is proposed to determine the main fluxes characterizing the surface stratified layer of plants’ habitat using the
Monin-Obukhov length scale. The gradient measurements of the profiles of wind flow speed, relative humidity, and air temperature
are carried out. The experimental data are obtained using the mobile automated system. The wavelet analysis of time series
is carried out. The nonlinear equation system is numerically solved to determine the heat, moisture, and momentum fluxes which
can be used for the optimum control of the plant moisture supply in the agricultural field. 相似文献
993.
994.
995.
996.
Large-scale deformation associated with ridge subduction 总被引:1,自引:0,他引:1
Eric L. Geist Michael A. Fisher David W. Scholl 《Geophysical Journal International》1993,115(2):344-366
997.
This paper reports on log transportation as a health-related issue in the Hokianga district of Northland at a time when forestry activity in the area is expanding and radical reforms to New Zealand's roading network have been proposed. Drawing on technical information and key informant interviews, the potential impacts of logging trucks on Hokianga roads are considered, the costs associated with forestry traffic are estimated, and the routes most likely to be affected are identified. Possible responses to the log transport problem are discussed, and it is concluded that rural communities such as Hokianga are vulnerable to both logging truck activity and changes in government policy. 相似文献
998.
John A. Bissonette Stuart S. Sherburne R. Douglas Ramsey 《International journal of geographical information science》2013,27(6):533-543
Abstract This paper proposes a unique method for plotting field bearing locations, of the kind typically taken by wildlife biologists on free ranging species, directly on a computer-compatible habitat map. We show how to use a GIS data base to identify differential habitat use directly from the polygon formed by each set of bearings. A geometric algorithm is developed to interpret the bearings accurately. The technique avoids the most difficult errors associated with using point locations, namely those due to animal movement, and distance from receiver to transmitter, and is especially useful for habitat preference studies. 相似文献
999.
CHI HO SHAM JOHN W. BRAWLEY MAX A. MORITZ 《International journal of geographical information science》2013,27(4):463-473
Abstract Waquoit Bay, a shallow bay on Cape Cod, Massachusetts, is exhibiting symptoms of eutrophication, largely attributed to septic nitrogen inputs. This study assessed septic nitrogen inputs by linking a three-dimensional ground-water model, a geographic information system (GIS), and a customized spatio-temporal nitrogen loading program. Owing to the slow speed of ground-water movement, the bulk of septic nitrogen entering the bay lags behind development by nearly a decade. Even if residential development is held at 1989 levels, nitrogen input from septic systems wilt increase by 36% over the current levels. At full residential build-out (i.e., development), septic nitrogen loading will eventually increase to more than twice the current levels. 相似文献
1000.
A. Geddes D.A. Elston M.E.A. Hodgson R. V. Birnie 《International journal of geographical information science》2013,27(4):785-803
Handling of uncertainty in the estimation of values from source areas to target areas poses a challenge in areal interpolation research. Stochastic model-based methods offer a basis for incorporating such uncertainty, but to date they have not been widely adopted by the GIS community. In this article, we propose one use of such methods based in the problem of interpolating count data from a source set of zones (parishes) to a more widely used target zone geography (postcode sectors). The model developed also uses ancillary statistical count data for a third set of areas nested within both source and target zones. The interpolation procedure was implemented within a Bayesian statistical framework using Markov chain Monte Carlo methods, enabling us to take account of all sources of uncertainty included in the model. Distributions of estimated values at the target zone level are presented using both summary statistics and as individual realisations selected to illustrate the degree of uncertainty in the interpolation results. We aim to describe the use of such stochastic approaches in an accessible way and to highlight the need for quantifying estimation uncertainty arising in areal interpolation, especially given the implications arising when interpolated values are used in subsequent analyses of relationships. 相似文献