Research Reports: Recent submissions

  • TN-66 : Automatic water quality monitoring 
    Tyagi, Aditya (National Institute of Hydrology, 1989)
    Increasing development of towns and industries has resulted in an increase in water consumption and waste water volume. Therefore, the danger of pollution has become greater for natural ...
  • TN-62 : Acquisition of land surface parameters for GCM 
    Divya; Sharma, M. K. (National Institute of Hydrology, 1989)
    Atmospheric models are coupled to the land surface through the hydrological cycle, rain carries water from the atmosphere and evapotranspiration returns it to the atmosphere. The studies of ...
  • TN-60 : Parameterization of infiltration in GCM 
    Divya; Seth, S. M.; Sharma, M. K. (National Institute of Hydrology, 1988)
    The General Circulation Models (GCM) synthesize the large scale distribution of the climate by application of the physical laws governing the atmospheric structure and behaviour. These ...
  • TN-59 : Regional GCM for the monsoon area 
    Divya; Seth, S. M.; Sharma, M. K. (National Institute of Hydrology, 1988)
    Monsoons, which affect the largest land masses, have been the subject of study on every scale from simple local studies to circulation simulation on giant computers (the so-called fifth ...
  • TN-58 : Soil moisture measurement and movement in agricultural fields 
    Jain, C. K. (National Institute of Hydrology, 1988)
    Soil moisture content is an important variable that determines the response of a soil plant system to any water input. Continual monitoring is therefore, of significance in irrigation management. ...
  • TN-57 : Ground water recharge using tracer techniques 
    Jain, C. K. (National Institute of Hydrology, 1988)
    Groundwater recharge is that amount of surface water which reaches the permanent water table either by direct contact in the riparian zone or by downward percolation through the overlying ...
  • TN-56 : Resistivity techniques for monitoring soil salinity 
    Goyal, V. C. (National Institute of Hydrology, 1988)
    Soil salinity problem in agricultural fields arises due to excessive soluble salts present in the soil, the inorganic electrolytes in the soil solution being the major contributors. ...
  • TN-53 : Movement of pollutants in subsurface environment 
    Kumar, Sudhir; Singh, Yatveer; Goyal, Rakesh; Abbas, Zafar; Sapra, T. R. (National Institute of Hydrology, 1988)
    The subsurface is the medium through which pollu- tants move from the soil surface to groundwater. Polluting substances are subjected to complex physical, chemical and biological ...
  • TN-50 : Impact of forest on ground water 
    Lohani, Vinay K.; Raghuwanshi, N. S. (National Institute of Hydrology, 1988)
    Forest influences on groundwater storage can be estimated from evapo- transpiration and discharge relationships. Studies have been done in various countries to establish relationship between forests and ...
  • TN-49: Storm drainage estimation in urban areas 
    Goyal, R. K.; Soni, B. (National Institute of Hydrology, 1988)
    In the last few decades, the world has witnessed rapid urbanisation. One of the many complex problems which have come up with increased urbanisation is that of quick drainage of ...
  • TN-48 : Mathematical modelling of solute transport in groundwater from a point source of pollution 
    Kamal; Deepti; Mishra, G. C. (National Institute of Hydrology, 1988)
    Considering the large number and variety of pollutants that may be released to the subsurface and the wide range of environmental situations (geological, hydrological, chemical. and biological) that may encounter, ...
  • TN-47 : Long term prediction of ground water regime in an internal draining basin 
    Kamal; Purandara (National Institute of Hydrology, 1988)
    An internally draining basin is one which is entirely without well defined natural streams or artificial surface drain. An example is the internal basins occupying the western Haryana and north eastern Rajasthan with ...
  • TN-46 : Assessment of groundwater in hard rock areas 
    Agarwal, Amit; Purandara, B. K. (National Institute of Hydrology, 1988)
    The present study is. an attempt to evaluate the ground water resources occurring in the hard rock regions. In this note the various disciplines involved in hydrogeology are discussed ...
  • TN-43 : Instrumentation for snow measurement 
    Singh, Pratap; Sharma, S. C. (National Institute of Hydrology, 1988)
    Reliable measurement of snowfall and estimation of snow cover is important for estimation of snowmelt. Unlike in the other countries where the areas of snowfall and accumulation ...
  • TN-40 : Metamorphism and remote sensing physics of snow 
    Patra, S. K.; Chhonkar, R. P. S. (National Institute of Hydrology, 1987)
    Snow and ice are significant elements of the world hydrological system, which occur subject to tremendous variation space. After the snow is deposited the particle shapes are modified ...
  • TN-39 : Resistivity and SP techniques for study of groundwater pollution 
    Goyal, V. C.; Nachiappan, Rm. P. (National Institute of Hydrology, 1987)
    Surface geoelectrical methods are now a days increasingly applied in solving a range of hydro geological problems involving both quantity and quality issues, particularly in the problem ...
  • TN-38 : Positive impacts of water resources on environment projects 
    Kumar, Sudhir; Sharma, Aditya (National Institute of Hydrology, 1988)
    In recent years the effects of water resources projects on environment is being propagated in a negative sense in news media, papers etc., which is affecting the water resources development. ...
  • TN-37 : Drainage in heavy soils 
    Soni, B.; Arora, Manohar (National Institute of Hydrology, 1987)
    Drainage of heavy land is largly governed by the fact that the hydraulic conductivity of the subsoil is generally too low to allow percolation of excess rain water to lower ...
  • TN-36 : Study of glacier melt and physics of glaciers 
    Singh, Pratap (National Institute of Hydrology, 1987)
    The existence of a Perennial ice mass depends on the interplay of accumulation and ablation processes. Over a time scale of a year or more on a glacier, accumulation processes dominate in the upper reaches ...
  • TN-45 : Estimation of evapotranspiration 
    Kumar, C. P.; Mishra, G. C. (National Institute of Hydrology, 1988)
    Next to rainfall, evapotranspiration is the most important term in the water balance of catchment areas. The subject of evapotranspiration, which includes evaporation of water from land and water ...

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