Special geographical and climatic conditions make waterlogging hazards become mortal to Shanghai. The hazard assessment is the basis of risk assessment for natural disasters. In this paper, with the assistance of Geographic Information System (GIS), based on the method of scenario simulation, according to the construction of mathematical models, the waterlogging hazard index was developed to make a systematic comparison of waterlogging hazard among different sub-districts. And then, for each sub-district in Huangpu District, the waterlogging hazard index for roads and old-style residences in two scenarios were obtained respectively. The results show that, in two rainstorm scenarios simulated, the waterlogging hazard in Yuyuan sub-district is at the lowest level. However, in the rainstorm of 20-year return period, the waterlogging hazard in some sub-districts such as Xiaodongmen sub-district and Bansongyuan sub-district is at high hazard level. In the rainstorm of 50-year return period, Xiaodongmen sub-district and Laoximen sub-district are considered to be at high hazard level. In a certain sense, the results can provide the guidance for regional disaster reduction.
SUN A-li, SHI Chun, SHI Yong
. Hazard Assessment on Rainstorm Waterlogging Disasters in Huangpu District, Shanghai Based on Scenario Simulation[J]. SCIENTIA GEOGRAPHICA SINICA, 2010
, 30(3)
: 465
-468
.
DOI: 10.13249/j.cnki.sgs.2010.03.465
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