 |
| Titel |
Hydrologic sensitivity of flood runoff and inundation: 2011 Thailand floods in the Chao Phraya River basin |
| VerfasserIn |
T. Sayama, Y. Tatebe, Y. Iwami, S. Tanaka |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 7 ; Nr. 15, no. 7 (2015-07-24), S.1617-1630 |
| Datensatznummer |
250119604
|
| Publikation (Nr.) |
 copernicus.org/nhess-15-1617-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| The Thailand floods in 2011 caused unprecedented economic damage in the Chao
Phraya River basin. To diagnose the flood hazard characteristics, this study
analyses the hydrologic sensitivity of flood runoff and inundation to
rainfall. The motivation is to address why the seemingly insignificant
monsoon rainfall, or 1.2 times more rainfall than for past large floods,
including the ones in 1995 and 2006, resulted in such devastating flooding.
To quantify the hydrologic sensitivity, this study simulated long-term
rainfall–runoff and inundation for the entire river basin
(160 000 km2). The simulation suggested that the flood inundation
volume was 1.6 times more in 2011 than for the past flood events. Furthermore, the elasticity index suggested
that a 1 % increase in rainfall causes a 2.3 % increase in runoff and
a 4.2 % increase in flood inundation. This study highlights the
importance of sensitivity quantification for a better understanding of flood
hazard characteristics; the presented basin-wide rainfall–runoff–inundation
simulation was an effective approach to analyse the sensitivity of flood
runoff and inundation at the river basin scale. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|