| Author | Vergara, Artemio Manuel |
| Call Number | AIT Thesis no. WA-88-19 |
| Subject(s) | Water balance (Hydrology)
|
| Note | A thesis submitted in partial fulfilment of the requirement for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Storage of rain water in the soil is a primary concern in
field management of agricultural lands. Th e basic knowledge
whether the expected rainfall within a specified time is enough
to sustain the requirement of the crop being grown in a
particular field in a certain season is a very important
consideration. The present study ha s been undertake n along with
this motivation to develop field water balance models for upland
fields to be used in the prediction of effective rainfall .
The model con siders the following hydrologic processes such
as interception , infiltration , runoff, moisture redistribution,
evapotranspiration and deep percolation. The model simulates leaf
area index which is used in modeling of interception and actual ev apo transpiration . Root depth is also simulated to determine the
depth of the soil profile during simulation of moisture
redistribution. Aside from effective rainfall the model also
predicts runoff , actual evapotranspiration , soil moisture storage
a nd deep percolation.
The model is tested with data from a watershed which is said
to have a relatively uniform rainfall intensity. Comparison with
a simple model with simple assumptions is also being carried out
u sing the same input data. Sensitivity analysis is being done to
i nvestiga t e the relative importance of the model parameters in
the simulation.
The application of the model produced considerably good
results which seem qualitatively to match real field systems.
The mode l can be applied to aid field planners to solve field
problems such as irrigation water management, efficient field
operations management and design of field drainage systems. |
| Year | 1988 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Nielsen, Steen Asger
|
| Examination Committee(s) | Mizutani, Masakazu ;Loof, Rainer
|
| Scholarship Donor(s) | Australian Government |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1988 |