Analysis of trends and frequency variability in water levels in the Vietnamese Mekong Delta using F-IPTA
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Nguyen Dam Quoc HuyHo Chi Minh City University of Natural Resources and Environment, VietnamTran Thi KimUniversity of Science, Vietnam National University, Ho Chi Minh City, VietnamNguyen Thi BayInstitute of Applied Technology and Sustainable Development, Center for Hi-Tech Development Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
Từ khóa:
Tóm tắt
Human activities and climate change have altered the hydrological regime of the Vietnamese Mekong Delta (VMD), but changes in water level trends and frequency variability have not yet been fully assessed. This study uses the Frequency-based Improved Polygonal Trend Analysis (F-IPTA) method to analyze monthly water level variations at the Tan Chau and Chau Doc stations from 1979 to 2023. The results show a decline in water levels during the flood season, from July to October, for high, low, and mean water levels. Low and very low water levels have become more frequent, while high and very high levels have decreased. Transition indicators further reveal shifts in the hydrological season and water levels distribution between the two periods. These findings provide quantitative evidence of changes in the VMD hydrological regime and can support more effective water resource management.
Tài liệu tham khảo
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