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You searched for: Journal Transactions of the ASAE Remove constraint Journal: Transactions of the ASAE Publication Year 2005 Remove constraint Publication Year: 2005 Source 2005 v.48 no.2 Remove constraint Source: 2005 v.48 no.2 Subject mathematical models Remove constraint Subject: mathematical models
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1. Comparison of the Weibull model wtih measured wind speed distributions for stochastic wind generation

Author:
van Donk, S.J.; Wagner, L.E.; Skidmore, E.L.; Tatarko, J.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 503
ISSN:
0001-2351
Subject:
Weibull statistics; wind speed; wind erosion; stochastic processes; soil erosion models; computer analysis; mathematical models; simulation models
Abstract:
... Wind is the principal driver of the Wind Erosion Prediction System (WEPS), which is a process-based computer model for the simulation of wind-blown sediment loss from a field. WEPS generates wind using a stochastic wind generator. The objectives of this study were to improve the stochastic generation of wind speed and direction and to update the wind statistics used by the generator with statistic ...
Handle:
10113/5488

2. Development and testing of watershed-scale models for poorly drained soils

Author:
Fernandez, G.P.; Chescheir, G.M.; Skaggs, R.W.; Amatya, D.M.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 639
ISSN:
0001-2351
Subject:
poorly drained soils; subsurface drainage; hydrologic models; simulation models; mathematical models; forested watersheds; water quality; streams; coastal plain soils; nitrate nitrogen; water pollution; pollution load; North Carolina
Abstract:
... Two watershed-scale hydrology and water quality models were used to evaluate the cumulative impacts of land use and management practices on downstream hydrology and nitrogen loading of poorly drained watersheds. Field-scale hydrology and nutrient dynamics are predicted by DRAINMOD in both models. In the first model (DRAINMOD-DUFLOW), field-scale predictions are coupled to the canal/stream routing ...
Handle:
10113/37520

3. Generating correlative storm variables for CLIGEN using a distribution-free approach

Author:
Zhang, X.C.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 567
ISSN:
0001-2351
Subject:
climate models; simulation models; storms; rain; water erosion; prediction; Water Erosion Prediction Project; runoff; sediment yield; mathematical models
Abstract:
... CLIGEN is the only weather generator that generates internal storm patterns, which are required by many agricultural system models such as the Water Erosion Prediction Project (WEPP) model. The lack of correlation between CLIGEN-generated storm variables may limit those models' abilities to predict surface runoff and soil erosion. The objectives of this study were to: (1) test a distribution-free ...
Handle:
10113/5493