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Mean precipitation over an area is best obtained from gauged amounts by
- a)arithmetic mean method
- b)Thiessen method
- c)linearly interpolated isohyetal method
- d)orographically weighted isohyetal method
Correct answer is option 'C'. Can you explain this answer?
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Mean precipitation over an area is best obtained from gauged amounts b...
Linearly Interpolated Isohyetal Method for Obtaining Mean Precipitation
Definition:
The linearly interpolated isohyetal method is a technique used to determine mean precipitation over an area by interpolating between isohyetal lines on a precipitation map.
Procedure:
1. Collect Gauged Amounts: Begin by collecting gauged precipitation amounts from various locations within the area of interest.
2. Draw Isohyetal Lines: Plot the gauged amounts on a map and connect points of equal precipitation to create isohyetal lines.
3. Interpolate Between Isohyetal Lines: To determine mean precipitation at ungauged locations, interpolate linearly between the isohyetal lines based on the distance from each line.
4. Calculate Mean Precipitation: Once the interpolation is completed, calculate the average of the interpolated values to obtain the mean precipitation over the entire area.
Advantages:
- Provides a more accurate estimate of mean precipitation compared to other methods.
- Incorporates spatial variability in precipitation distribution within the area.
Limitations:
- Requires a sufficient number of gauged data points for accurate interpolation.
- Assumes a linear relationship between precipitation and distance from isohyetal lines, which may not always be the case.
By following the linearly interpolated isohyetal method, one can obtain a reliable estimate of mean precipitation over a given area by taking into account the spatial distribution of precipitation amounts.
Definition:
The linearly interpolated isohyetal method is a technique used to determine mean precipitation over an area by interpolating between isohyetal lines on a precipitation map.
Procedure:
1. Collect Gauged Amounts: Begin by collecting gauged precipitation amounts from various locations within the area of interest.
2. Draw Isohyetal Lines: Plot the gauged amounts on a map and connect points of equal precipitation to create isohyetal lines.
3. Interpolate Between Isohyetal Lines: To determine mean precipitation at ungauged locations, interpolate linearly between the isohyetal lines based on the distance from each line.
4. Calculate Mean Precipitation: Once the interpolation is completed, calculate the average of the interpolated values to obtain the mean precipitation over the entire area.
Advantages:
- Provides a more accurate estimate of mean precipitation compared to other methods.
- Incorporates spatial variability in precipitation distribution within the area.
Limitations:
- Requires a sufficient number of gauged data points for accurate interpolation.
- Assumes a linear relationship between precipitation and distance from isohyetal lines, which may not always be the case.
By following the linearly interpolated isohyetal method, one can obtain a reliable estimate of mean precipitation over a given area by taking into account the spatial distribution of precipitation amounts.
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Mean precipitation over an area is best obtained from gauged amounts bya)arithmetic mean methodb)Thiessen methodc)linearly interpolated isohyetal methodd)orographically weighted isohyetal methodCorrect answer is option 'C'. Can you explain this answer?
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Mean precipitation over an area is best obtained from gauged amounts bya)arithmetic mean methodb)Thiessen methodc)linearly interpolated isohyetal methodd)orographically weighted isohyetal methodCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Mean precipitation over an area is best obtained from gauged amounts bya)arithmetic mean methodb)Thiessen methodc)linearly interpolated isohyetal methodd)orographically weighted isohyetal methodCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Mean precipitation over an area is best obtained from gauged amounts bya)arithmetic mean methodb)Thiessen methodc)linearly interpolated isohyetal methodd)orographically weighted isohyetal methodCorrect answer is option 'C'. Can you explain this answer?.
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