VNU Journal of Science: Earth and Environmental Sciences

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Thunderstorm forecast technique for Noi Bai Airport
VNU Journal of Science: Earth and Environmental Sciences - - 2008
Tran Tan Tien, Nguyen Khanh Linh, Cong Thanh, Le Quoc Huy, Do Thi Hoang Dzung
Abstract
Effects of Monsoon Activity on Monthly Phytoplankton Blooms in the Gulf of Thai Land in El Nino Year 2002
VNU Journal of Science: Earth and Environmental Sciences - Tập 34 Số 2 - Trang - 2018
Le Van Thien
The Gulf of Thailand is a semi-closed Gulf on the west and southwest side of the Indochina Penisula and experiences reversal monsoon.  The object of the present study is to investigate monthly and spatial distributions of the phytoplankton in the Gulf of Thailand during whole El Nino year 2002 by using remote-sensing measurements of chlorophyll-a (Chl-a) and surface wind vectors. Results show...... hiện toàn bộ
Decrease of Heavy Metal Availability: Different Approaches for Remediation of Polluted Soil in Red River Delta, Vietnam
VNU Journal of Science: Earth and Environmental Sciences - Tập 29 Số 4 - Trang - 2013
Nguyễn Ngọc Minh
Abstract: Heavy metal (HM) contaminations in the topsoil around handicraft villages in the Red River Delta (RRD),Vietnam impose serious threats to the subsoil as well as to the groundwater quality. This work is to decrease the mobility of HM by applying Fe powder, the kaolinite, bentonite and vermiculite to soils.  Organo-clays produced by modifying these above clay minerals with surfactants HDPy ...... hiện toàn bộ
Study on Sediment Regime Changes in Downstream of the Ba River, Vietnam under the Impact of Reservoirs System
VNU Journal of Science: Earth and Environmental Sciences - Tập 33 Số 4 - Trang - 2018
Nguyen Tien Giang, Hoang Thu Thao, Tran Ngoc Vinh, Pham Duy Huy Binh, Vu Duc Quan
Reservoirs system in upstream of Ba River has been affecting to the hydrology and sediment regime at the downstream. Sediment imbalance causes consequences such as erosion at river bank, lack of sediment supply to downstream areas and deposition/erosion in estuaries. This study focused on a quantitative assessment of the impact of Ba Ha reservoir and Song Hinh reservoir on sediment regime at the C...... hiện toàn bộ
The Updated Change Trend of Sea Wave on Vietnam East Sea
VNU Journal of Science: Earth and Environmental Sciences - Tập 37 Số 3 - Trang - 2021
Tran Van My, Nguyen Xuan Hien, Le Quoc Huy
The annual mean SWH trend of the East Sea in Vietnam is studied and evaluated based on data observed from the oceanographic stations and altimetry data from AVISO’s satellite. Oceanographic observed data analysis results show that the annual mean sea wave height decreases about 12,79 mm/year. Altimetry data (2009 – 2019) indicates that the annual mean sea wave height over the East Sea decreases ab...... hiện toàn bộ
Evaluate the Economic Value of the Recreational Services of the Hon Yen Complex in Phu Yen Province
VNU Journal of Science: Earth and Environmental Sciences - Tập 41 Số 1 - Trang - 2025
Pham Viet Thanh, Dang Thi Ngoc, Tran Van Truong, Nguyen Cao Huan, Du Vu Viet Quan
   
Community based coastal resources management behind changes in surface water environment and land policy: A case study in the Tam Giang Lagoon, Central Vietnam
VNU Journal of Science: Earth and Environmental Sciences - Tập 26 Số 3 - Trang - 2010
Nguyen Huu Ngu, Tran Anh Tuan
Abstract. This paper attempts to examine the changes in surface water environment and community based coastal resources management activities in the Tam Giang Lagoon, Central Vietnam. The results show that the lagoon’s surface water has been polluted. BOD５, COD and nutrient concentration have increased in the lagoon’s surface water environment. It proved that there was a present of organic substan...... hiện toàn bộ
Assimilation of Sea Surface Temperature data for Central Vietnam’s Water Using Regional Ocean Modeling System (ROMS)
VNU Journal of Science: Earth and Environmental Sciences - - 2021
Nguyen Kim Cuong
This paper presents the preliminary results of SST data assimilation for the Central Vietnam’s water using Regional Ocean Modeling System (ROMS). ROMS was used to assimilate with high-resolution SST from satellite with 4D-PSAS assimilation technique. Multi-scale Ultra-high Resolution (Mur) SST dataset which combines satellite and microwave data was used. ROMS has been set up based on the HYCOM pro...... hiện toàn bộ
Impacts of Vetiver Grass and DT2008 Soybean Cover Crop Practices on Soil Quality in Citrus Orchards in Cao Phong, Hoa Binh
VNU Journal of Science: Earth and Environmental Sciences - Tập 40 Số 4 - Trang - 2024
Tran Thi Tuyet Thu, Le Ngoc Hieu, Le Nhat Ha, Ngo Hong Anh Thu, Pham Minh Ha
This study investigated the efficiency of biomass management, residue quantity, and quality from Vetiver grass and DT2008 soybean cover crops in improving soil quality, including carbon and nitrogen content and soil physiochemical properties. Mesocosm experiments in pots were conducted with six treatments, each was replicated three times: CT0 (control), CT1 (2% Vetiver grass mulch), CT2 (2% DT2008...... hiện toàn bộ
Initial Assessment the Effects of Polyethylene Microplastics on the Growth of Zebrafish Embryos Danio rerio
VNU Journal of Science: Earth and Environmental Sciences - Tập 40 Số 4 - Trang - 2024
Ta Le Dang Khoi, Pham Xuan Nui, Nguyen Lai Thanh, Do Thi Hai, Tran Thi Thanh Thuy, Nguyen Mai Hoa, Pham Thi Thanh Hai, Tran Thi Thu Huong
The aim of this study to evaluate the effect of polyethylene (PE) microplastics to mortality rates and morphological changes of zebrafish (Danio rerio) embryos by determining the mortality ratio of embryos and changes in embryo morphological structure after 24, 48, 72 and 96 h of exposure. Zebrafish were obtained from the Faculty of Biology - Hanoi University of Science. 24-hour-old fish embryos w...... hiện toàn bộ
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