Thiessen polygon method

Thiessen polygon method

[′tē·sən ′päl·i‚gän ‚meth·əd]
(meteorology)
A method of assigning areal significance to point rainfall values: perpendicular bisectors are constructed to the lines joining each measuring station with those immediately surrounding it; the bisectors form a series of polygons, each polygon containing one station; the value of precipitation measured at a station is assigned to the whole area covered by the enclosing polygon.
References in periodicals archive ?
Two of the most widely accepted techniques to compute average precipitation depth are the Thiessen Polygon method and the Isohyetal method.
By the Thiessen Polygon method, the areas represented by the polygons surrounding each rain gauge are determined with a planimeter and substituted in Equation 3.
4 Compute the average rainfall for a given watershed by the Thiessen Polygon method from the following data.