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Estimation method of watershed hydrology similarity based on time series kernel distance

A technology of time series and nuclear distance, applied in computing, computer components, data processing applications, etc., can solve the problems of information collection, high analysis cost, deviation of hydrological similarity, large amount of data information of physical detection methods, etc.

Active Publication Date: 2021-04-09
HOHAI UNIV
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Problems solved by technology

At present, topography and geological exploration are mainly used to quantify the main structural factors affecting the hydrological process. However, the hydrological process is not only affected by the physical characteristics of the underlying surface of the watershed, but also affected by precipitation recharge and previous conditions. Only physical detection means , inferring hydrological similarity often leads to deviations. In addition, physical detection methods require a large amount of data information, and the cost of information collection and analysis is high.

Method used

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  • Estimation method of watershed hydrology similarity based on time series kernel distance
  • Estimation method of watershed hydrology similarity based on time series kernel distance
  • Estimation method of watershed hydrology similarity based on time series kernel distance

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Embodiment 1

[0074] combine figure 1 The flow chart shown, the specific implementation process is:

[0075] S1. Select the Chenqi Watershed as the watershed to be studied, which is located at the Puding Karst Ecological Experiment Station in Guizhou Province, with a watershed area of ​​1km 2 , with an altitude of 338-1491m; the watershed belongs to the subtropical monsoon humid climate zone, with an average annual precipitation of 1336mm and an average annual temperature of 14.2°C; the watershed has the typical plateau landform of peak clusters and depressions in Guizhou, and the mountain vegetation is covered with woodland, shrubs and shrubs. The soil is dominated by clumps, and the soil thickness is thin (<50cm); the depression is mainly farmland, and the soil layer is relatively thick, generally up to 40-100cm; a precipitation and hydrological response process on June 30 in the rainy season of 2017 was selected as the analysis object.

[0076] S2. This precipitation event started at 3...

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Abstract

The invention discloses a watershed hydrological similarity estimation method based on time series nuclear distance, comprising the following steps: S1. Obtaining hydrological observation data of the watershed to be studied; S2. Determining the precipitation process to be analyzed according to the hydrological observation data of the watershed to be studied and the analysis period of the hydrological response process; standardize the hydrological response time series of different analysis stations in the watershed to be studied to obtain the standardized sequence of the hydrological response process; S3. S4. Use the calculation method described in S3 to calculate the nuclear distance between the hydrological response processes of two different analysis stations, obtain the nuclear distance matrix D of the hydrological response process of different analysis stations in the watershed, and finally use the hierarchical clustering analysis method Analyze its hydrological similarities. The invention overcomes the disadvantage of high cost in the prior art, improves the utilization rate of the existing hydrological observation data, and reduces the estimation cost of the hydrological similarity of the existing watershed.

Description

technical field [0001] The invention belongs to the technical field of hydrology under geophysics, and in particular relates to a watershed hydrological similarity estimation method based on time series nuclear distance. Background technique [0002] Watershed hydrological similarity is the spatial similarity of the formation and evolution characteristics of hydrological processes at different locations in the watershed, reflecting the spatial distribution characteristics of terrain, topography, soil, and vegetation in the watershed and their impact on hydrological processes, and can be used to analyze watershed-scale hydrology The distribution, storage and release characteristics of water in the process. At present, topography and geological exploration are mainly used to quantify the main structural factors affecting the hydrological process. However, the hydrological process is not only affected by the physical characteristics of the underlying surface of the watershed, b...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/26G06K9/62
CPCG06Q10/0639G06Q50/26G06F18/23
Inventor 张润润陈喜张志才程勤波
Owner HOHAI UNIV
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