IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Extreme events, natural variability and climate change : Spatial scaling of floods during hurricane events in mexico
Spatial scaling of floods during hurricane events in mexico
Author : J. A. BREÑA-NARANJO1 AND A. PEDROZO-ACUÑA2
ABSTRACT
The spatial scaling of flood events can be assessed through a power-law relationship between the maximum
observed discharge (Qp) and the upstream drainage area (A). This envelope of data points is of great usefulness for
predicting peak flows in ungauged basins. Previous works have demonstrated the scale invariance of flood peaks with
respect to a drainage area. Such patterns are usually represented by a cloud of flood peak values limited by an upper
and lower envelope suggesting a maximum and minimum possible discharge values during precipitation events.
While the scaling behavior of floods has been primarily linked to the intrinsic hydro-climatic and geomorphological
characteristics of watersheds in temperate regions, little is known about the spatial scaling of floods in tropical
watersheds. This work analyzes the Qp-A scaling relationship in several Mexican watersheds that are occasionally
impacted by tropical storms and hurricanes. The findings of this study show exceptional peak flows generated by
cyclonic events. These values are comparable to maximum discharge values found in other regions of the world, even
when they are not generated by cyclonic precipitation systems. This study highlights the contribution of cyclonic
precipitation to flooding through the magnitude found in the scaling exponents.
File Size : 1,561,141 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Extreme events, natural variability and climate change
Date Published : 14/08/2015
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