First evidence of a structured and dynamic spatial pattern of rainfall within a small humid tropical catchment

被引:15
作者
Bidin, K
Chappell, NA [1 ]
机构
[1] Univ Malaysia Sabah, Sch Sci & Technol, Sabah 88999, Malaysia
[2] Univ Lancaster, Inst Environm & Nat Sci, Lancaster LA1 4YQ, England
关键词
catchment; Malaysia; monsoon; rainfall; spatial variability;
D O I
10.5194/hess-7-245-2003
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
In a study of the spatial variability of rainfall across a network of 46 raingauges in a 4 km(2) rainforest catchment in the interior of northeastern Borneo, seasonal rainfall totals were correlated with raingauge separation distance, aspect and relief A very high degree of spatial variability in seasonal totals across a very small area was found, even in comparison with other regions experiencing convective rainfall. Moreover, it shows systematic, stochastic structure in rainfall is present over scales of 10s to 100s metres; these patterns change from the southwest monsoon (May-October) to the northeast monsoon (November-April). Local associations with aspect and relief are present but the seasonal changes in rainfall pattern over the whole 4 km(2) catchment must relate to more complex local topographic effects on the regional windfield.
引用
收藏
页码:245 / 253
页数:9
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