人工降雨
1.Study on the Method of Photograph Application of the Rainfall Terminal Speed in the Artificial Simulating Rainfall Equipment
2.She has been firing rockets with special chemicals at rain clouds to see if she can create precipitation.
3.This paper analyses the benefits to soil and water conservation of tillage measures, with reference to rainfall influences.
4.The government is using cloud seeding to try to produce rain for farmers, stave off drought and fill water basins.
5.For example, the artificial modification of rain at New York City may suggest a seeding activity just a few miles upwind of the metropolis.
6.The paper analyzes the effect of three cultivation measures of contour cropping, manual excavation and manual hoeing to the reduction of run-off energy and erosion based on office artificial rainfall testing.
7.Based on artificial rainfall,the courses of sediment yield were studied, at the same time, analyze influence of rainfall intensity, gradient and bulk densities to sediment yield amount.
8.Abstract: In accordance with the problems in the system of well storing rainfall at present,based on the experiments of artificial simulating rainfall,and assistance with the measures of natural rainfall,the relationships among the surface runoff yield,silt concentration,catching runoff efficiency and the material of surface,slope gradient,rainfall intensity are analysed systematically.Then,the best slope gradient and material of surface are chosen,in condition of which surface rainfall yield is the largest and silt concentration is the smallest.This is a beneficial study for the practical use of the rainwater catchment plot in furture.
9.The paper establishes a mathematical model for calculating soil erosion modulus and a method for calculating new soil loss by using annual rainfall data and individual rainfall data, taking the outcomes of tests and study of natural rainfall, artificial rainfall and washout as a basis, rainfall erosion force, soil resistance to erosion and ground slope as main factors and combining with the study on new soil loss in typical regional development and construction.
