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The Thiessen polygon is
  • a)
    a polygon obtained by joining adjoining raingauge stations
  • b)
    a representative area used for weighing the observed station precipitation
  • c)
    an area used in the construction of depth- area curves
  • d)
    the descriptive term for the shape of a hydrograph
Correct answer is option 'B'. Can you explain this answer?
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The Thiessen polygon isa)a polygon obtained by joining adjoining raing...
Thiessen polygon is a representative area used for weighing the observed station precipitation in hydrology. It is a polygon obtained by joining adjoining raingauge stations, and it is named after Alfred H. Thiessen. The Thiessen polygon method is used to estimate the average precipitation over an area.

The method involves dividing the area into smaller polygons based on the locations of the raingauge stations. Each polygon represents the area that is closer to a particular station than any other station. The area of each polygon is calculated by connecting the midpoints of the lines between the stations.

The area of each polygon is then weighted by the amount of precipitation observed at the station within that polygon. The weighted areas are summed up, and the total is divided by the total area of the region to get the average precipitation for the entire region.

The Thiessen polygon method is useful for estimating precipitation in areas where there are few or no raingauge stations. It is also useful for estimating the average precipitation over large areas, as it takes into account the spatial distribution of the raingauge stations.

In conclusion, the Thiessen polygon is a representative area used for weighing the observed station precipitation in hydrology. It is obtained by joining adjoining raingauge stations, and it is an important method for estimating average precipitation over large areas.
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The Thiessen polygon isa)a polygon obtained by joining adjoining raingauge stationsb)a representative area used for weighing the observed station precipitationc)an area used in the construction of depth- area curvesd)the descriptive term for the shape of a hydrographCorrect answer is option 'B'. Can you explain this answer?
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