The effects of rainfall

Xem 1-20 trên 23 kết quả The effects of rainfall
  • This study presents a procedure for calculating the change of the safety factor for unsaturated slopes of homogenous, residual soils suffering from rainfall infiltration within Khanh Vinh district, Khanh Hòa province. Rainfall is supposed as a main trigger caused failure of the potential sliding slopes. Rainwater into the slope due to infiltration caused an increase in moisture content and negative pore water pressure; a decrease in matric suction and in shear strength on the failure surface.

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  • This report was originally released in December 2004 in prepublication form as the first report of a two-phase study to be carried out by the same committee. The first phase was sponsored by the National Aeronautics and Space Administration (NASA) and focused on the Tropical Rainfall Measuring Mission (TRMM). The second phase was sponsored by the National Oceanic and Atmospheric Administration and focused on the Global Precipitation Measurement mission. The report of the second phase will be published in a separate volume in 2006.

    pdf116p camchuong_1 04-12-2012 39 3   Download

  • Tham khảo sách 'assessment of the benefits of extending the tropical rainfall measuring mission a perspective from the research and operations communities', khoa học tự nhiên, địa lý phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf116p mnemosyne75 02-02-2013 29 2   Download

  • Beside the effect of gravitational forces, the water level in Sai Gon-Dong Nai River System is also affected by non gravitational forces such a wind, air pressure, rainfall and sea level rise. The purpose of this paper is to simulate the water level of these river based on the tidal and non-tidal constituents, from that assess the role of non-tidal constituents to water variation. In this study, the none-tidal data used includes the wind field at surface, sea level pressure and the rainfall in Sai Gon- Dong Nai Basin. With the analyzed data series from 1980 to 2007, the results...

    pdf9p dem_thanh 22-12-2012 30 3   Download

  • Due to climate change, the agro-climatic indicators in Son La province has changed in the following trends: (i) the total heat in the Winter - Spring crop and the Summer crop as well as the total annual heat have increased; (ii) The amount of time in a year with temperature below 20 degrees has shortened; the amount of time in a year with temperatures above 25 degrees has lengthened; (iii) the absolute minimum temperature tends to increase rapidly; (iv) the rainfall in Winter - Spring crop has increased slightly whereas the season rainfall and total annual rainfall tend to decrease.

    pdf11p cumeo4000 01-08-2018 19 0   Download

  • Temperature and rainfall changes are both significant components of climate change. This study characterizes the effects of climate change on water resources in the Büyük Menderes river basin in western Turkey, based on hydrology, temperature, and rainfall data from the past 45 years (1963-2007).

    pdf14p masterbarista 15-01-2019 17 0   Download

  • The large amount of water required for the production of plant substance is taken from the soil by the roots. Leaves and stems do not absorb appreciable quantities of water. The scanty rainfall of dry-farm districts or the more abundant precipitation of humid regions must, therefore, be made to enter the soil in such a manner as to be readily available as soil-moisture to the roots at the right periods of plant growth. In humid countries, the rain that falls during the growing season is looked upon, and very properly, as the really effective factor in the production of large...

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  • Soil communities are important aspects of biodiversity and they are involved in many important ecosystem processes, particularly nutrient cycling. Soil chemistry is neither an aspect of biodiversity nor one of the primary causes of change addressed by this project. Nevertheless, understanding mechanisms of change and correctly attributing effects to causes are central to the project, making it necessary to understand the soil chemistry at sites.

    pdf78p saimatkhauroi 01-02-2013 29 3   Download

  • In this paper, a new conceptual model for the above problem was developed and the effect of different types of boundary conditions such as sea effect on the right side of the domain, tidal effect on the top of the domain, rainfall and evaporation effect on the top boundary at the upland was studied.

    pdf6p namthangtinhlang_03 10-11-2015 25 2   Download

  • Hydraulic properties of soils and soil erodibility are expected to vary after rainfall because of the impact energy of raindrops. Resistance both to rainfall detachment and to runoff detachment might differ after rainfall, and temporal changes in soil erodibility take place.

    pdf7p aquaman27 15-01-2019 7 0   Download

  • Hydraulic conductivity is the most important property of geological formations as the flow of fluids and movement of solutes depend on it. Among fluids, water and contaminant migration beneath, the ground surface have become critical for water resource development, agriculture, site restoration and waste disposal strategies.

    pdf0p cucdai_1 14-10-2012 39 11   Download

  • Rainfall Attenuation Investigations on the attenuation caused by rain and other hydrometers and their effects on terrestrial communications started as early as in the 1940s. Subsequently, many theoretical and experimental results were obtained and used to predict the effects of interaction between hydrometers and microwave signals. The theories for the prediction of rain attenuation on microwave signals are well established and widely used by many researchers.

    pdf18p tienvovan 11-09-2010 81 6   Download

  • The most discussed effect of global warming is the increase of temperatures, although this increase will not be homogeneous through the seasons, with the winters expected to warm up significantly more than the summers. In addition, changes in precipitation are also expected that could lead to increase or decrease of rainfall, snowfall and other water-related events. Finally, a change in the frequency and intensity of storm events could be possible, although this is probably the most uncertain of the effects of global warming.

    pdf0p lulaula 25-10-2012 41 6   Download

  • Climate change has been happening in scales of the global, regional as well as in Vietnam because of human activities which impulse greenhouse gas increasing in the atmosphere. To cope effectively with climate change, the understanding of future climate based on climate change scenarios, particularly scenarios for small areas, is essential. This paper concerns on the application of MAGICC/SCENGEN 5.3 software in combination with statistic correction to develop climate change scenarios for small areas in Vietnam. Results showed that the temperature is increased, while rainfall is changed...

    pdf6p dem_thanh 22-12-2012 36 3   Download

  • Onewaytogetaroundthissituation istounderstandthewateruseofcropduringgrowth,as this period demands maximum input. With this information, the contribution/influence of energycropsonwaterresourcescanbeunderstood.Waterrequirementsofaplantspeciescan becalculatedbyestimatingtheminimumamountofwaterperhectareyield(orwater limited yield),whichisbasedonthepotentialyieldofthecropspeciesandtheavailabilityofwater. Wateruseofplants(evapotranspiration) isdependentontheplantspecies.

    pdf20p loixinloi 08-05-2013 49 3   Download

  • Greenhouse gases are accumulating in Earth’s atmosphere as a result of human activities, causing surface air temperatures and subsurface ocean temperatures to rise. Temperatures are, in fact, rising. The changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21st century.

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  • Land clearing is expected to be done mechanically, the technique being similar to that at present used by CAMDEV for rubber. Trees are pushed over, raked into windrows and burnt. On the Boa Plain an effective burn wil l be essential to facilitate drain excavation. This may be difficul t with the heavy rainfalls and short dry season. The timing of the clearing operations wil l be important. Felling one dry season and wind- rowing and burning the next may help, as may the use of flame-throwing equipment and fans to ignite the windrowed debris properly. Some pre-clearing drainage may also...

    pdf104p thieubaotrang 23-04-2013 25 2   Download

  • Partitioning gross rainfall (GR) into throughfall (TF), stemflow (SF), and interception loss (I), which has a very significant effect on water balance and the nutrient cycle in forest ecosystems, was studied in a natural oriental beech (Fagus orientalis Lipsky) forest situated in the Caspian Forest of northern Iran.

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  • Safflower (Carthamus tinctorius L.) can be a potential oilseed crop for the low-rainfall areas of Central Anatolia, Turkey. The purpose of this study was to determine response of safflower cultivars to weed and the row spacing. The experimental design was used a split-split plot arrangement in a completely randomized block with 3 replications.

    pdf4p aquaman27 15-01-2019 9 0   Download

  • Ondjiva, an Angolan town on the border with Namibia, often goes for years without significant rainfall. When it does rain, floods sweep across the flat ground leaving little stored for future use. Those who can afford to do so buy their water from tankers, spending on average one third of their monthly income. Others buy from men like Antonio - his barrel weighs nearly ¼ tonne, and it will have taken him much of the day to roll it into town, earning him around 20 pence. Many people can afford neither; meaning girls and women must spend time...

    pdf8p quaivatdo 18-11-2012 39 3   Download



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