Arsenic pollution in groundwater in the red river delta
Arsenic pollution in groundwater in the red river delta
... mitigate arsenic in groundwater. - Investigation into the degree of arsenic pollution and the scale of distribution of arsenic in the vulnerable areas in the Red River Delta plain and vicinity. ... and 3.14mg/l in Chieng Bui. In the Red River Delta plain, the industrial zones discharge waste containing arsenic. In the Viet Tri industrial zone the arsenic concentration in groundwater is ... causes the lowering of groundwater table, saline intrusion and pollution including arsenic pollution. Efforts to establish some knowledge of the arsenic levels in the Red River delta plain have...
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Báo cáo " Quantitative distribution of groundwater chemical components in the Red River Delta based on frequency analysis " pot
... ions in Pleistocene and Holoceneaquifer in the Red River Delta (RRD) are in accordancewithnormal distribution,while otherionsare in accordance with skew distribution. In the ... andcoarsegrainsize[4,5].Finesedimentscompos edmainlyofsand in the lowerpartandweatheredclay in the upper part of VinhPhuc Formation(Q13vp). The thicknessof this ... ones‐ the twoimportant groundwater tables‐arementioned.2. Quantitative distribution of groundwater chemicalcomponents in the Red River Delta Downward, Holocene aquifer is the ...
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Báo cáo " Characteristics of Quaternary sedimentary facies in relation to water bearing capacity of aquifers and aquicludes in the Red River Delta, Vietnam " ppt
... the waterleveldecreaseswith the distancefrom the river. Therefore, this aquifer is mainlyrechargedby the rain waterand surfacewater,especially in some big rivers in the Red River system. The groundwater ... andmarinefacies(formed in the finalstageofeachcycle). Based on this point of view, the Quaternarysedim e nts in the Red River Delta canbe divided into the following hydrogeologicalunits: ... Fig.1.Quaternarysedimentaryfacialcrosssection in the Red River Delta [5].NguyenThanhLan etal./VNUJournalofScience,EarthSciences 23(2007)170‐176172of the Quaternary sediments in the Red River Delta, thereisaclearchangeofsedimentaryfaciesassociations...
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Báo cáo " Margin deltas in the northern part of the Red River basin " doc
... existence of the margin deltas in Miocene in the northern part of the Red River basin confirms a presence of basin floor fans in the central part of the Red River basin. These basin floor fans ... oil and gas. For the first study of margin deltas in the northern part of the Red River basin, the Miocene deposits in the northern part of the Red River basin - where a continental shelf was ... margin deltas in the northern part of the Red River basin A study result on the Red River basin has revealed 8 transgression/regression cycles during the Miocene. There are 2 cycles in Early...
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Children security as part of the " living together with floods" strategy in the Mekong river delta, VietNam
... but others were not trained. There is no official swimming training in the school program in the Mekong River Delta. It seems an irrational structure for children living in a floodplain as the ... those living in the urban areas, children in the rural area are familiar with the water in rivers and canals. Their daily lives are linked with the rice fields and flood plains. Some of them learn ... showing high percentage of child deaths in the total the losses of life in the flood seasons in the MD. Save the Children (2003) reported that the vast majority of the drowning deaths in recent...
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A discussion proposal on people''''s adaptability to floods in the Mekong river delta
... the river meets the Tongle Sap river, then splits into Tien river and Hau river before entering the border of Vietnam and continues to branch into 9 tributaries as the river estuaries. The ... list of the largest rivers in the world and is longest river in southeastern Asia. From its source in Tibet, the river flows to the South China Sea through Yunnan, China, forms the border partly ... sea, the MD accepts yearly all the water flood volume of the basin. About 1.2 to 1.9 million ha of land, mainly in the North parts of the MD such as the LongXuyen quadrangle and the Plain of...
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Tài liệu Action plan for the multi-level conservation of forest wetlands in the Mekong River Delta, Vietnam pdf
... U Minh areas were burned, accounting for approximately 57% (17% in the Lower U Minh and 40% in the Upper U Minh) of the total Melaleuca forest area. In the U Minh coastal forest areas, the ... season, due to the combination of floodwater draining from the upstream areas, the overland flood water entering from Cambodia across the Vietnam border, the inland high rainfall and the effects ... species in which Melaleuca leucodendron plant is predominating throughout. The exponential growth of the population in the MD, which expands annual with 2.3%, is the primary cause of the increasing...
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Tài liệu Water quality management for irrigation in the mekong river delta, Vietnam doc
... Vietnam. The Delta in Vietnam is bordered to the North by Cambodia, to the west by the Vam Co river, to the south by the Eastern Sea and to the west by the Gulf of Thailand. The whole Delta is ... mainly in the Long Xuyen - Ha Tien quadrangle, the Plain of Reeds, the West Hau river Fig.1: The Mekong River Basin and Land forms of the MD in Vietnam 3and in a part of Ca Mau peninsula. ... complicated. The main factors are river discharge, local rainfall and runoff, the amplitude of tides in the East Sea and the Gulf of Thailand, the slope of the river bed, the wind velocity...
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Tài liệu An overview of the drinking water supply situation in the Mekong river delta, Vietnam pdf
... An overview of the drinking water supply situation 1 in the Mekong river delta, Vietnam (Le Anh Tuan) AN OVERVIEW OF THE DRINKING WATER SUPPLY SITUATION IN THE MEKONG RIVER DELTA, VIETNAM ... million inhabitants living in 4 million hectares of land. All the people living in the Delta have to depend totally on the water resources, mainly the surface water, for domestic drinking, crop ... flowed out to the sea via the delta. High rainfall combined with high flow of the river results in yearly flooding. Big flood occurs in the Mekong river for every 2, 3 or 4 years. There is a very...
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