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Extreme evaluation method and system for flood events induced by heavy rainfall

A technology for heavy rainfall and flood disasters, which is applied in the field of extremeness assessment methods and systems for flood events induced by heavy rainfall, can solve problems such as distortion of assessment results of extremeness of flood disaster events, and achieve reasonable and reliable results and good identification ability

Active Publication Date: 2020-06-05
CHINA YANGTZE POWER +1
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Problems solved by technology

[0006] This application provides a method and system for evaluating the extremeness of flood events induced by heavy rainfall, so as to solve the problem of serious distortion of the evaluation results of the extremeness of flood events in the prior art

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  • Extreme evaluation method and system for flood events induced by heavy rainfall
  • Extreme evaluation method and system for flood events induced by heavy rainfall
  • Extreme evaluation method and system for flood events induced by heavy rainfall

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Embodiment Construction

[0061] In order to make the above objects, features and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with example drawings and specific implementation methods.

[0062] At present, the detection of extreme rainfall events mostly adopts mathematical methods to detect the maximum or minimum value, super-percentile value or sudden change value in the rainfall observation sequence, analyze its temporal and spatial variation characteristics, or use the probability distribution function to find the rainfall extremes. The change rule of the value; disaster assessment is mostly based on disaster assessment and risk analysis.

[0063] The inventor analyzed and found that the flood disaster caused by extreme rainfall includes aspects such as the extremeness of rainfall and the severity of disaster losses, and there is an inevitable causal relationship between the two, that is, the a...

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Abstract

The invention provides an extreme evaluation method and system for flood events induced by heavy rainfall. According to the method, multi-source information such as extreme rainfall and flood loss iseffectively fused, quantitative analysis and accurate calculation of the rareness, occurrence intensity and breaking strength of flood disasters induced by heavy rainfall are achieved, and compared with a traditional single evaluation method only depending on rainfall, a recurrence period or a disaster index, the result is more reasonable and reliable. Practical application results show that the method has good identification capability, can comprehensively and accurately evaluate the extreme property of flood disasters induced by heavy rainfall, and provides a new approach for detection and evaluation of extreme rainfall flood disasters under climate change conditions.

Description

technical field [0001] This application relates to the technical field of extreme climate research, in particular to a method and system for evaluating the extremeness of flood events induced by heavy rainfall. Background technique [0002] Under the current climate background, extreme rainstorm and flood events occur frequently, which is one of the most serious disasters in the world. Scholars at home and abroad have done a lot of research on extreme climate change and extreme events under climate change conditions. [0003] In terms of extreme climate observation research, Kundzewicz et al. observed river floods under climate change and predicted future flood forms; Allan et al. analyzed the impact of changes in global large-scale precipitation patterns on regional extreme precipitation changes; Bronstert et al. predicted Under the condition of climate change, the changes of floods in Germany under the three emission models; Zhang Daquan and others analyzed the temporal an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/06393G06Q50/26Y02A90/10
Inventor 尚毅梓任玉峰郭胜山冶运涛汤正阳马鑫李海荣龚家国曹光荣蒋云钟樊启祥
Owner CHINA YANGTZE POWER
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