雨量站網設計與評估－區域化變數理論之應用

本文介紹區域化變數理論於雨量站網設計與評估之應用，並以淡水河流域之32個雨量站爲例說明之。研究中首先以時雨量之無因次半變異元分離降雨强度及地域對降雨量空間變異之影響，再配合克利金變異數之推估與排序，以一循序演算法決定各雨量站設置或捨棄之先後順序。文中並利用全域克利金變異數以決定該流域應優先設置之基本站，可刪除之多餘站及合理之站數。

關鍵字

雨量站網設計；空間變異；克利金法；區域化變數；變異元

並列摘要

The application of the theory of regionalized variables to raingage network design and evaluation is introduced using 32 raingages in Tan-sui River watershed as an example. Dimensionless variogram of hourly rainfall was established to separate the influence of rainfall intensity and geographic location on the spatial variability of hourly rainfall. A sequential algorithm was implemented to calculate and rank the kriging variance of each individual raingage using all other gages. Then, the priority of adding or removing raingages was established in reference to the kriging variances. Finally, the global kriging variance was used to determine the reasonable number of raingages that should be retained and basic raingages which are required to detect the trend of rainfall spatial variation.

並列關鍵字

Raingage network design ； Spatial variation ； Kriging method ； Regionalized variables ； Variogram

主題瀏覽