Correlation study on water area- capacity-level of Danjiangkou Reservoir based on GF_1 Satellite
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
Based on GF-116m resolution multispectral remote sensing satellite and hydrological observation data by calculating Normalized Difference Water Index (NDWI) to extract the surface area of the Danjiangkou Reservoir, and to study the correlations of surface area, water level and volume of water between the three, dynamic analysis reservoir storage capacity changes, in order to provide decision support for the "South-to-North diversion project". The result shows: ①water transfer before and after the first dispatch of Danjiangkou Reservoir water area - water depth, water depth - storage capacity and surface area-storage capacity. there is significant correlation, and three pairs of variables present strong linear, conic, cubic curve relationship in turn, the decisive coefficients of Curve-fitting equations were 0.976, 0.999, 0.980 respectively. It may predict two other unknown variables from one known; ② the maximum range of water area from October 5, 2014 to May 5, 2016 was 180km2, which is an important factor that affects the surrounding environment; ③ Finally, storage capacity at the same time in the first year scheduling, in early November 2014, reached the maximum 20.41 billion m3, adjustable water in 1.653 within the range of floating 7.893 billion m3, and the total change in the year was flat and stable to ensure that the water demand during the 2015 scheduling of the North Water Transfer Project.
Keywords:
Project Supported:
Clc Number:
Mobile website
® 2024 All Rights Reserved
冀公网安备13010502002656号
冀公网安备13010502002656号