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Precipitation early warning method and application thereof in geological disaster

A technology for geological disasters and precipitation, applied in alarms, climate change adaptation, instruments, etc., can solve the problems that the relationship between water vapor and precipitation is almost blank, and the relationship between water vapor and precipitation has no accurate conclusions in the quantitative relationship, so as to achieve precipitation forecasting The effect of high accuracy

Active Publication Date: 2015-06-10
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ground-based GPS technology provides water vapor with high temporal and spatial precision monitoring data, but there is still no accurate conclusion on the relationship between water vapor and precipitation, especially on the quantitative relationship, and the discussion on the relationship between water vapor and precipitation based on small watersheds is almost blank

Method used

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  • Precipitation early warning method and application thereof in geological disaster
  • Precipitation early warning method and application thereof in geological disaster
  • Precipitation early warning method and application thereof in geological disaster

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Embodiment 1

[0034] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 shown. Longmen Mountain is located between the Western Sichuan Plateau and the Sichuan Basin. It is an important terrain abrupt change zone in western China. Affected by the "5.12" Wenchuan Earthquake in 2008, geological disasters occurred frequently after the earthquake; especially from July 4 to July 10, 2013 , the heavy rainfall process in the southwest region reached the maximum value in the past 50 years. This heavy rainfall process caused mass debris flow disasters in the Wenchuan earthquake-stricken area. At 10:30 am on July 10, 2013, the Wuxiangang landslide occurred in Sanxi Village, Zhongxing Township, killing 188 people. According to the geographic location where the Wuxiangang landslide occurred, the Hongkou ground-based GPS station (this site belongs to the Global Navigation Satellite System of GNSS Network in Sichuan Province) and the precipitation in Dujiangyan ...

Embodiment 2

[0047] Such as figure 1 , figure 2 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 shown. The Jiangjiagou River Basin is located in Dongchuan District, Kunming City, Yunnan Province. It is the location of the Dongchuan Debris Flow Observation Station, a key field station of the Ministry of Science and Technology. It is an ideal test base for early warning of debris flow. At the same time, the rain gauge stations arranged in the watershed provide good support for precipitation data for the implementation of the method of the present invention. Carry out precipitation early warning method of the present invention in Jiangjiagou watershed, concrete steps are as follows:

[0048] The first step is to build a ground-based GPS station in the Dongchuan Debris Flow Observation Station (103°08′ east longitude, 26°14′ north latitude) after the actual investigation of the Jiangjiagou River Basin, and then obtain the Jiangjiagou watershe...

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Abstract

The invention discloses a precipitation early warning method and an application thereof in geological disaster. The precipitation early warning method includes: comparing PWV (precipitable water vapor) inverted by using foundation GPS (global position system) data with precipitation data, considering functions of accumulation of the PWV in a precipitation occurrence process, finding out a power function law of converting the PWV into effective precipitation occurrence, and introducing the power function law into precipitation early warning so as to use the power function law as a critical threshold of effective precipitation. The precipitation early warning method can achieve the precipitation early warning small in watershed and high in accuracy, and can be used in development of early warning work of the rainstorm type geological disaster of torrential flood, debris flow, landslides and the like.

Description

technical field [0001] The present invention relates to a method for early warning of precipitation, in particular to a method for early warning of precipitation by combining the Precipitable Water Vapor (PWV for short) retrieved from ground-based GPS (Global Positioning System, Global Positioning System) data with actual precipitation. method, and its application in heavy rainfall geological disasters such as mountain torrents, debris flows, and landslides. Background technique [0002] As the most active element of the atmosphere, precipitation plays an important role in atmospheric processes at various temporal and spatial scales. At present, precipitation monitoring and forecasting can be roughly divided into four categories: satellite monitoring, radar monitoring, rainfall station monitoring and numerical forecasting. Among the above monitoring methods, satellite monitoring mainly relies on the inversion of precipitation by space-borne sensors, and can be roughly divid...

Claims

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Application Information

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IPC IPC(8): G08B21/10G08B31/00
CPCG08B21/10G08B31/00Y02A50/00
Inventor 苏鹏程韦方强王源程刘晶晶
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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