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Establishing an empirical equation for the relationship between total suspended solids and total phosphorus concentrations in the downstream Red river water
Abstract Recently, the Asian rivers have faced the strong reduction of riverine total suspended solids (TSS) flux due to numerous dam/reservoir impoundment. The Red river system is a typical example of the Southeast Asian rivers that has been strongly impacted by reservoir impoundment in both China and Vietnam, especially in the recent period. ...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 510 | Lượt tải: 0
GIS based frequency ratio method for landslide susceptibility mapping at Da Lat City, Lam Dong province, Vietnam
ABSTRACT Landslide susceptibility mapping of the city of Da Lat, which is located in the landslide prone area of Lam Dong province of Central Vietnam region, was carried out using GIS based frequency ratio (FR) method. There are number of methods available but FR method is simple and widely used method for landslide susceptibility mapping. In the ...
12 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 423 | Lượt tải: 0
Some features of marine dynamics caused by Damrey Typhoon (11/2017) and its impacts on coral reef in Ninh Van waters, Khanh Hoa province
Abstract Typhoon Damrey (Vietnamese name is Typhoon No. 12 in 2017) landed in Southern Phu Yen - Northern Khanh Hoa in the morning of 4th Nov 2017 causing severe damage to people, material and serious consequences on the socio-economy of the region (especially Khanh Hoa Province). So far, there have been no published papers and reports on the r...
11 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 471 | Lượt tải: 0
Water resources potential in Co To island and exploitation orientation to use
Abstract Co To is an island of the Co To district in Quang Ninh province with an area of about 18 km2. Average rainfall on the island is 1,738.8 mm/yr, evaporation is 925 mm/yr. On the island, there are some small streams but they are temporary flow in the rainy season, there is not any natural lakes. There are 2 aquifers. The Quaternary aquife...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 519 | Lượt tải: 0
The effects of projects of dredging and recovering saline sand at estuaries in Binh Thuan - Ninh Thuan provinces
Abstract According to statistics in Binh Thuan - Ninh Thuan provinces, there are 4 projects of dredging and recovering saline sand at estuaries such as La Gi, Ca Ty, Phan Ri Cua and Dong Hai. These projects use dredging plans by sand suction vessel and scraper bucket to scoop sand on barges, then sand is transferred to ships for exportation or ...
12 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 498 | Lượt tải: 0
The capability of organic matter decomposition and nutrient uptake in coastal waters of Ca Na bay, Ninh Thuan province
Abstract This paper focuses on the capability of organic matter decomposition and inorganic nutrient uptake in the coastal waters of Ca Na bay (Ninh Thuan province) in October, 2018 (the rainy season) and May, 2019 (the dry season). The results of laboratory experiments on organic decomposition, photosynthesis and nutrient uptake showed that th...
11 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 397 | Lượt tải: 0
Some issues of geomorphology to serve coastal environmental management of Quang Nam province
Abstract This paper presents the results of studies on the coastal geomorphological processes, which have been happening, to serve the coastal environmental management of Quang Nam province. Research results show that the geomorphological process is mainly destruction or coastal erosion, which has been occurring in most of the shores formed by ...
13 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 577 | Lượt tải: 0
Distribution of heavy metals and organic in the clam culture areas at Binh Dai, Ba Tri, Thach Phu in Ben Tre province
Abstract The paper presents the contents of metals and organic in the surface sediments (5–10 cm) at the submerged clam culture areas in Ben Tre province. The metal samples were digested by nitric acid 10% and analyzed by ICP-MS method, total organic matters (HC) were determined by the burning method at 500oC. The results showed that the conten...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 487 | Lượt tải: 0
Some scientific issues related to biological resource use and management toward sustainable development of marine economy in the costal provinces in South Central Vietnam
Abstract Based on referring recent target scientific issues related to sustainable development in the world and considering practices of economic development in the provinces of South Central Vietnam, some issues were selected for analyses in terms of concepts, needs and orientations applicable to the region. They include, inter alia: Economic ...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 378 | Lượt tải: 0
Studies on the variability of upwelling system in the South Central Vietnam waters under the impact of ENSO events and its impact on hydrographic conditions of the Ninh Thuan-Binh Thuan waters
Abstract In this paper, we have exploited and analyzed data from HYCOM + NCODA Global 1/12.5o Reanalysis database in the period of 20 years from 1993 to 2012 and from 2013–8/2016 for the data assimilation of the HYCOM + NCODA Global 1/12° Reanalysis - for 22 depth layers in the East Sea area. The research results show that there are changes in ...
17 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 628 | Lượt tải: 0