PRECIPITATION DATA FROM GOOGLE EARTH ENGINE (GEE) IN REVETMENT DRAINAGE EVALUATION IN KALIANDA DOI Open Access
Ahmad Herison

Deleted Journal, Journal Year: 2024, Volume and Issue: 36(2), P. 51 - 59

Published: July 31, 2024

Floods can occur frequently if there are no organized and constant changes in land use. Flood issues Waymuli, South Lampung, has been occurring due to use the area. Prior studies regarding drainage of coastal revetments may have done before. However, analysis was using precipitation data from GEE therefore, new findings as solution for flood problems region were necessary. The main objective this research is assess extent success system management rainfall information obtained via GEE. method used by evaluating capability GEE, which involve identifying measuring capacity with HEC-RAS application. This study conclude that be accurately evaluate revetment drainage. Rainfall last two years 54.0340 mm, 81.8905 mm five years, 104.0784 ten years. results show highest recorded September 2022 46.857 mm. Based on evaluation, it also found does not drain rain within a 2-year period. It concluded function area support system, system.

Language: Английский

An Analysis of the Current Situation of Ecological Flow Release from Large- and Medium-Sized Reservoirs in the Southeastern River Basins of China DOI Open Access
Yijing Chen, Hui Nie,

Gaozhan Liu

et al.

Water, Journal Year: 2025, Volume and Issue: 17(3), P. 451 - 451

Published: Feb. 6, 2025

Ecological flow is a crucial determinant of river ecosystem well-being and aquatic stability. Large- medium-sized reservoirs, with flood prevention, irrigation, power generation functions, necessitate scientifically devised ecological release plan for conservation water quality amelioration. This study centered on three reservoirs in the Jiaojiang River Basin Zhejiang Province, China. Using measured outflow data, hydrological approach was initially adopted to calculate individual reservoir flows. Subsequently, entropy weight method employed ascertain most suitable flow. grade thresholds were then established formulate optimal scheme. The outcomes demonstrated that average flows Xia’an, Lishimen, Longxi 1.90 m3/s, 1.95 0.42 respectively. multi-year assurance rates 62.53%, 77.72%, 56.94%, successively. weighted downstream 2.10 2.28 0.44 m3/s. During periods when monthly rate below 60%, implemented schemes installing siphons, renovating diversion systems, using post-dam units,

Language: Английский

Citations

0
Reservoir ecological operation based on the improved indicators of hydrologic alteration DOI
Shuyue Wu, Min Yan, Zhongmei Wang

et al.

Ecological Engineering, Journal Year: 2025, Volume and Issue: 217, P. 107642 - 107642

Published: April 15, 2025

Language: Английский

Citations

0
Quantifying the Impacts of Climate Change and Human Activities on Runoff in the Upper Yongding River Basin DOI
Yiyang Yang, Siyu Cai, Xiangyu Sun

et al.

Journal of Hydrologic Engineering, Journal Year: 2025, Volume and Issue: 30(2)

Published: Jan. 6, 2025

Language: Английский

Citations

0
A Long-Term Evaluation of the Ecohydrological Regime in a Semiarid Basin: A Case Study of the Huangshui River in the Yellow River Basin, China DOI Creative Commons

Lijuan Fan,

Lanxin Liu, Jing Hu

et al.

Hydrology, Journal Year: 2024, Volume and Issue: 11(10), P. 168 - 168

Published: Oct. 10, 2024

This study aimed to evaluate the ecohydrological regime and ecological water demand of Huangshui River Basin under changing environmental conditions, seeking safeguard its ecosystem. Based on monthly data spanning from 1956 2016, regimes Datong were evaluated using methods such as Pettitt mutation test, Tennant method, deficit surplus analyses. The mainly obtained Xiangtang Station Minhe River. results showed following. (1) most abrupt increase in measured runoff at occurred 1993, while point change 1990. (2) Following an human activities, changes negative January, April May, July, September November, positive January April, July August, October December. Changes March December, (3) annual average flow River, section, was 28.42 m3/s, 896 million m3. section 19.98 631 According a calculation degree satisfaction, prior implementation Water Diversion Project volumes both rivers generally sufficient meet demand. However, high consumption during irrigation period led deficit. To address these issues, it is crucial potential impacts diversion projects, river flow. Recommendations include expediting Yellow Xining secure enhancing conservation efforts agricultural irrigation.

Language: Английский

Citations

2
Distribution and dynamics of niche and interspecific association of dominant phytoplankton species in the Feiyun River basin, Zhejiang, China DOI
Shengnan Zhu, Zengchuan Dong, Guobin Fu

et al.

Journal of Oceanology and Limnology, Journal Year: 2024, Volume and Issue: 42(4), P. 1157 - 1172

Published: March 18, 2024

Language: Английский

Citations

1
Optimal operation model of ecological flow of hydropower station based on genetic algorithm and neural network DOI Creative Commons

Yong Luo

Heliyon, Journal Year: 2024, Volume and Issue: 10(20), P. e39441 - e39441

Published: Oct. 1, 2024

Language: Английский

Citations

1
Analysis of effect of rainfall and eco-flow indicators for the assessment of streamflow in Sone River Basin, Bihar DOI
Ankit Ranjan, Thendiyath Roshni

Physics and Chemistry of the Earth Parts A/B/C, Journal Year: 2024, Volume and Issue: 134, P. 103564 - 103564

Published: Jan. 21, 2024

Language: Английский

Citations

1
Hydrological changes in the Upper Yellow River under the impact of upstream cascade reservoirs over the past 70 years DOI
Jing Hu, Xiong Zhou, Yujun Yi

et al.

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 57, P. 102105 - 102105

Published: Dec. 9, 2024

Language: Английский

Citations

1
Seasonal Variation and Driving Factors of Metazooplankton Community in the Cascade Reservoirs DOI Creative Commons
Shengnan Zhu, Zengchuan Dong, Guobin Fu

et al.

Ecosystem Health and Sustainability, Journal Year: 2024, Volume and Issue: 10

Published: Jan. 1, 2024

To investigate the structural characteristics and driving factors of metazooplankton community in cascade reservoirs Feiyun River Basin, monitoring surveys were conducted at 18 sampling sites across different seasons: September 2021 (autumn), January 2022 (winter), May (spring), July (summer). These identified 51 species, with highest species abundance observed summer lowest winter. Notably, densities biomasses peaked spring, averaging 13.57 ind./l (where stands for individuals per liter) 0.362 mg/l, respectively, while average (9.20 ind./l) (0.262 mg/l) occurred winter, respectively. Seasonal variation had a notable influence on composition metazooplankton, Rotifera predominating autumn, Copepoda winter spring. Cyclops larva Nauplius consistently dominated throughout. Correlation analyses revealed significant negative association between richness Pielou evenness indices phosphate total phosphorus concentrations, Redundancy chlorophyll a, water temperature, phosphorus, conductivity, pH, as key environmental influencing seasonal distribution community. This study provides preliminary assessment dynamics communities offering foundational insights evaluating ecological health basin waters.

Language: Английский

Citations

0
PRECIPITATION DATA FROM GOOGLE EARTH ENGINE (GEE) IN REVETMENT DRAINAGE EVALUATION IN KALIANDA DOI Open Access
Ahmad Herison

Deleted Journal, Journal Year: 2024, Volume and Issue: 36(2), P. 51 - 59

Published: July 31, 2024

Floods can occur frequently if there are no organized and constant changes in land use. Flood issues Waymuli, South Lampung, has been occurring due to use the area. Prior studies regarding drainage of coastal revetments may have done before. However, analysis was using precipitation data from GEE therefore, new findings as solution for flood problems region were necessary. The main objective this research is assess extent success system management rainfall information obtained via GEE. method used by evaluating capability GEE, which involve identifying measuring capacity with HEC-RAS application. This study conclude that be accurately evaluate revetment drainage. Rainfall last two years 54.0340 mm, 81.8905 mm five years, 104.0784 ten years. results show highest recorded September 2022 46.857 mm. Based on evaluation, it also found does not drain rain within a 2-year period. It concluded function area support system, system.

Language: Английский

Citations

0