For determining the outer limits of the extended continental shelf, the identification of the foot of the continental slope (FOS) points are very important because they are the basis for computing two formula for determination of outer limit lines such as the continental slope plus 60 nautical miles line (Hedberg formula line) and the 1% sedime...
7 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 674 | Lượt tải: 0
Gravity terrain correction of seafloor topography is very necessary and decisive for effective in interpretation of marine gravity data. In this study, gravity terrain correction is calculated in combination with the methods that given by Nagy (1966) and Kane (1962). A digital terrain model of the seafloor topography (DEM) 2.5 × 2.5km is used i...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 803 | Lượt tải: 0
In recent years, the map for forecasting of tuna (big eyes tuna and yellow fins tuna) fishing grounds has based upon fisheries data of longline gear which were collected through different projects from the period of 1996 to 2010. These data resources have been restoring at the Research Institute for Marine Fisheries (RIMF). Both univariate time...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 770 | Lượt tải: 0
Based on the reef building ability relying on symbiotic zooxanthellae, corals can be classified into reef building hermatypic corals and non reef building ahermatypic corals. Based on the presence or absence of outer skeleton, corals can be divided into stony corals and soft corals. For the purpose of feeding, the corals can be classified into l...
10 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 799 | Lượt tải: 0
Studies on exploitation of marine sharks were conducted by interview and consultation with local fishing villages in six provinces including Quang Ngai, Binh Dinh, Phu Yen, Khanh Hoa, Ninh Thuan and Binh Thuan. A total of 180 fishers of some major fishing gears were interviewed and consulted in 2010 and 2011. Results from interview and consulta...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 690 | Lượt tải: 0
Locating in the middle of the Gulf of Tonkin, Bach Long Vy island possesses a great potential for economic - social development and natural conservation. However, its resources and environment are strongly impacted by adverse natural factors included climate change, and human activities. Using the matrix analysis, the available vulnerability fo...
14 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 675 | Lượt tải: 0
Different types of currents (residual-, tidal-, wind- and general currents, etc.) in Phan Thiet bay have been studied using 3D nonlinear finite element method (FEM). The studied results showed the applicability of FEM for simulation of current regime in waters with complex topography and large liquid boundary. To evaluate the applicability of t...
14 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 870 | Lượt tải: 0
The paper mentioned the influence of topography of the free surface to seismic ground motions, an important topic in the field of enginerring seismology, but often overlooked in seismic hazard assessments in Vietnam. The paper also introduced a method for estimating these effects in Vietnam context that the distribution of the seismic stations is...
6 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 679 | Lượt tải: 0
In this paper, the authors introduce one type of nanomineral, imogolite, which is, currently, in the interest of many scientists. Based on characteristics of chemical compositions and natural forming conditions, imogolite is synthesized by combining a solution of AlCl3 with Si(OC2H5)4. Different experimental conditions, such as concentrations of ...
6 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 729 | Lượt tải: 0
Impact of winter monsoon circulations on aerosol optical depth (AOD) in Bac Giang and Bac Lieu stations are analyzed through the wind speed data series of the National Center for Environmental Prediction/Department of Energy (NCEP/DOE-2) and the AOD data obtained from AERONET stations network (AErosol RObotic NETwork) of the National Aeronautic ...
9 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 616 | Lượt tải: 0
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