Open AccessSpatial Characteristics of Flooded Areas in the Mun and Chi River Basins in Northeastern Thailand
Author(s) -
Shingo Zenkoji,
Shigehiko Oda,
Taichi Tebakari,
Boonlert Archevarahuprok
Publication year - 2019
Publication title -
journal of disaster research
Language(s) - English
Resource type - Journals
eISSN - 1883-8030
pISSN - 1881-2473
DOI - 10.20965/jdr.2019.p1337
Subject(s) - flood myth , flooding (psychology) , environmental science , hydrology (agriculture) , surface runoff , statistical analysis , spatial distribution , climatology , physical geography , geography , geology , statistics , geotechnical engineering , mathematics , psychology , ecology , remote sensing , archaeology , psychotherapist , biology
The objectives of this study are to conduct an analysis on rainfall change tendencies, calculate the inundation in the basins of Mun and Chi Rivers in the northeastern region of Thailand, and clarify the flood risk in the long term, taking the spatial characteristics of flooding into consideration. To grasp the rainfall change tendencies, two statistical analyses are conducted using the Mann-Kendall test and the generalized extreme value distribution. The inundation analysis is conducted using the Rainfall-Runoff-Inundation (RRI) model. As a result of the statistical analysis on the rainfall characteristics, it can be observed that the annual rainfall has significant increasing tendencies at the significance level of 5% in a wide area of the upper reaches. In addition, inundation calculation indicates that the maximum inundation depth and inundation area have increased in recent years.