In contrast to other natural disasters, droughts may develop gradually and last for extended periods of time. The World Meteorological Organization advises using the Standardized Precipitation Index (SPI) early identification drought understanding its characteristics over various geographical areas. this study, we use long-term rainfall data from 14 rain gauge stations in Vietnamese Mekong Delta (1979–2020) examine correlations with changes rice yields. Results indicate that winter–spring...

This study examines the changing rainfall patterns in Vietnamese Mekong Delta (VMD) utilizing observational data spanning from 1978 to 2022. We employ Mann–Kendall test, sequential and innovative trend analysis investigate trends annual, wet, dry season rainfall, as well daily events. Our results show significant spatial variations. Ca Mau, a coastal province, consistently showed higher mean annual seasonal compared further inland stations of Can Tho Moc Hoa. Interestingly, Mau experienced...

Along with rapid population growth in Vietnam, there is an increasing dependence on groundwater for various activities. An Giang province known to be one of the agricultural intensification areas The Vietnamese Mekong Delta (VMD). This study aimed evaluate spatiotemporal variation quality a period ten years from 2009 2018 Giang. weighted index (GWQI) was developed based fuzzy analytic hierarchy process (Fuzzy-AHP) assigning parameters. results show that shallow wells Northeast and Southeast...

The Vietnamese Mekong Delta (VMD) is one of the largest rice-growing areas in Vietnam, and exports a huge amount rice products to destinations around world. Multi-dike protection systems have been built prevent flooding, supported agricultural intensification since early 1990s. Semi-dike full-dike used grow double triple rice, respectively. Only small number studies conducted evaluate water quality VMD. This study aimed analyze spatiotemporal variation inside dike-protected area. Surface...

This study utilized MIKE 11 to quantify the spatio-temporal dynamics of water quality parameters (Biochemical Oxygen Demand (BOD5), Dissolved (DO) and temperature) in Long Xuyen Quadrangle area Vietnamese Mekong Delta. Calibrated for year 2019 validated 2020, developed model showed a significant agreement between observed simulated values parameters. Locations near cage culture areas exhibited higher BOD5 than sites close pond/lagoon due effects numerous point sources pollution, including...

The Mekong delta is Vietnam’s premier rice growing region, forming the livelihood basis for millions of farmers. At same time, region facing various challenges, ranging from extreme weather events, saline water intrusion, and other anthropogenic pressures. This study examines how intrusion drought have affected yield in Vietnamese Delta (VMD). Applying Standardized Precipitation Index (SPI) maximum minimum values annual average salinity, we spatially examine effects on yields over a 40-year...

This study presents a comprehensive analysis of plastic waste accumulation in both terrestrial and aquatic environments Can Tho city, Vietnam, nation with high per capita consumption significant discharge. Focusing on urban residential areas, riverside communities, suburbs, rural regions, the research investigates extent impact these diverse settings. Additionally, examines plastics at barriers, under bridges, Hau River, identifying predominance single-use their environmental implications....

Ảnh Sentinal-2 với độ phân giải 10 m được sử dụng để khảo sát Diễn biến hình thái doi cát hai bên cửa sông Cửa Cạn thuộc thành phố Phú Quốc, tỉnh Kiên Giang kết hợp số liệu sóng thực đo trong năm 2021 tại trạm khí tượng hải văn Quốc. Kết quả tích cho thấy theo mùa sự đứt gãy và kéo dài xen kẽ nhau. Trong đó, của các chủ yếu do dòng chảy lũ từ tháng 12 đến 4, này tạo ra cồn chắn giữa sông. Vào gió Tây Nam 5 11, hướng vận chuyển bùn ven bờ mang bồi lấp nối liền vào một mới. Dựa diễn diện ở...

Abstract The present paper investigates fluvial flood hazards in urban areas the M ekong D elta to inundation due seasonal flooding, a phenomenon which is likely be exacerbated by future sea‐level rise. Unlike past researches mainly focus on flooding river discharge from upstream or heavy precipitation, scrutinises influence of ocean tides. research reveals that tides predominantly determine water elevation even an location such as C T ho ity, 80 km inland mouth, and flow causes tidal...

A few studies have evaluated the impact of land use cover (LULC) change on surface water quality in Vietnamese Mekong Delta (VMD), one most productive agricultural deltas world. This study aims to evaluate parameters inside full- and semi-dike systems outside dike system during wet dry season An Giang Province. Multivariable statistical analysis weighted arithmetic index (WAWQI) were used analyze 40 samples each seasons. The results show that mean concentrations conductivity (EC), phosphate...

Abstract Climate and rainfall are extremely non-linear complicated phenomena, which require numerical modelling to simulate for accurate prediction. We obtained local historical data 12 meteorological stations in the Vietnamese Mekong Delta (VMD) 45-year period 1978–2022, predict annual trends. A statistical time series predicting technique was used based on autoregressive integrated moving average (ARIMA) model. utilized seasonal ARIMA process of form (p,1,q)(P,1,Q) our study area. The best...

In order to evaluate clearly the state of water resources in Srepok River basin – a typical rural area South-East Asia, Modified Water Poverty Index (MWPI) was developed. Indicators five components MWPI were evaluated using benchmark approach. The cross-correlation among indicators each component as well checked; and high-correlated eliminated. calculated its then mapped analysed three different scales (basin, sub-basin district). From overall score, general conclusion drawn on poverty...

Globally, hydrometeorological hazards have large impacts to agriculture output, as well human well-being. With climate change derived increasing frequency of extreme weather conditions, the situation has becoming more severe. This study strives evaluate both dry and wet conditions in Vietnamese Mekong Delta (VMD), also known rice basket Southeast Asian region. Different meteorological parameters from last three decades were used develop drought indices for Ca Mau province investigate their...

Agriculture in the Global South is innately susceptible to climatic variability and change. In many arid semi-mountainous regions of developing world, drought regularly cited as a significant threat agricultural systems. The objective this study assess impacts climate change on land use cover (LULC) region Vietnamese Mekong Delta. We assessed previous trends (1980–2020) future context change, accordance with three selected scenarios from Coupled Model Intercomparison Project Phase 6 global...

The dynamic shifts in shorelines due to erosion and deposition have become a significant challenge coastal zone management, particularly the context of climate change rising sea levels. This paper evaluates shoreline protection efficiency various wave-reducing breakwaters Vietnamese Mekong Delta. delta exemplifies issue faced by deltas worldwide. Landsat satellite images were used establish development map for period 2000 2022. wave data front behind analyzed assess reduction breakwater...

Information on the relationship between rainfall intensity, duration and accumulation frequency or return period (IDF) is commonly utilized in design management of urban drainage systems. Can Tho City, located Vietnamese Mekong Delta, a city which has recently invested heavily upgrading its stormwater systems hope preventing reoccurring flood events. Yet, much these works were designed based obsolete outdated IDF curves. This paper presents an updated curve for City. For each designated...

Abstract This paper examines the impact of dike systems on river flows in Vietnamese Mekong Delta (VMD). The study combined a hydrological change index method and Mann–Kendall test to assess temporal dynamics both discharge water levels along main rivers VMD. Results highlight that system canals helps facilitate waterway traffic drainage during flood season. However, low elevation delta has created conditions suitable for saline increasingly penetrate upstream dry Observed changes indicators...

The objective of this study is to assess the impact human activity on hydrological regimes in upper Srepok River basin, Central Highlands Vietnam. For purpose, specific flow and water demand for each sub-basin were first estimated then input into calibrated river basin management model (MIKE Basin) generate data. Future land use/cover was predicted using a geographic information system (GIS)-based logistic regression approach population projected from historical hydrologic intervention...

This study develops a tide propagation model in order to forecast water levels and velocities at given time location for the largest city Mekong Delta, Can Tho City. The simulation is applied complex waterway system that characterised by number of small canals tributaries, which connect with main stream. model, verified comparison observed during typical dry season, enables examination mechanisms tidal propagation, have an impact on floods, inundation saline intrusion. analysis indicates...

Tidal inlets with attached sand spits are a very common coastal morphology. Since the evolution of along coastline have greatly affected on social-economic development local areas. However, previous studies mainly focused which usually in scales hundred meters width. Therefore, this study, morphological change smaller and unexplored spit located west coast Phu Quoc Island, will be investigated. It was found that there is seasonal variation at Song Tranh Inlet. The Longshore sediment...

This study evaluates the performance of simulated precipitation and maximum minimum temperatures in historical runs Climate Model Intercomparison Project Phase 6 (CMIP6) for Vietnamese Mekong Delta (VMD). The precipitation, as well outputs from 16 general circulation models (GCMs), were compared with observations 12 stations period 1980–2014, using a set statistical metrics, namely, normalised root mean square error (NRMSE), percentage bias (PBIAS), Nash–Sutcliffe efficiency (NSE),...