Tác động của nước biển dâng đến chế độ thủy triều dọc bờ biển Việt NamThe characteristics of the tidal regime in coastal areas are formed by the resonance of the astronomical tidal waves transmitted from the ocean in shallow water under the action of horizontal terrain (scale water bodies) and the straight vertical (depth). Thus, sea level rise due to climate change that would alter the depth and scale of the ocea...
7 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 812 | Lượt tải: 0
Những vấn đề ưu tiên trong quản lý tổng hợp đới bờ biển Việt NamThe priority issues for the integrated management of Vietnam coastal zone have been determined based on the systematic analysis and evaluation of data and information of natural conditions, ecosystems, status and trends of coastal environment and resources; on the status and orientation of coastal socio-economic development; the perspective on ...
9 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 557 | Lượt tải: 0
Đặc điểm địa chất công trình nền đê sông Hồng khu vực Hà Nội và các tai biến địa chất liên quanSeries of problems of infiltration and seepage deformation, as well as slope failure of river band and dike of Red River in Hanoi has made the administators and people to be fearful. In history, dike breaks have occurred in many places, influencing on the social-economic situation of the region. The major cause of the above geological hazards is ...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 715 | Lượt tải: 0
Mô hình chu trình chuyển hoá nitơ trong hệ sinh thái biển áp dụng cho vùng biển vịnh Bắc BộThis paper presents the model on Nitrogen transformation cycle in the marine ecosystem has been established and used to study on primary productivity in Gulf of Tonkin. In the cycle, the Nitrogen element is transformated through 5 compounds: Phytoplankton, Zooplankton, Dissolved Organic Matter, Amonium and Nitrate. The transformation processes ...
22 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 607 | Lượt tải: 0
Thực vật nổi (phytoplankton) vùng biển phía tây vịnh Bắc Bộ và Phụ CậnBased on phytoplankton data collected in Tonkin Gulf and adjacent from 1959 to 2009, phytoplankton is studied. The total of phytoplankton species has been identified to be 449 species, 100 genuses, 43 families, 10 orders, 4 classes, 4 phylums and be divided into three ecological groups. The biological indexes (diversity index - H’, Evenness inde...
17 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 763 | Lượt tải: 0
Một số thí nghiệm về dòng chảy river plumeThis paper presents an overview of buoyant gravity currents and RPs, and some experimental results and analyses of experiments of small scale RPs in laboratory with a flume model. In the experiments, the flume is filled with salt water to model sea water and to create the ambient of the RP; fresh water is released at one side of the flume to cre...
20 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 607 | Lượt tải: 0
Individual variation of toxicity in three Vietnamese toxic marine puffer speciesThe results of survey on the toxins in three species marine puffers responsible for many poisonings in Vietnam revealed that they possess both TTX and STX, in which TTX is as dominant toxin of all poisoning cases. The toxicity in these species is different depending on individual and tissue. This finding shows that toxin component and toxicity ...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 576 | Lượt tải: 0
Thành phần loài và phân bố của rong biển quần đảo Lý Sơn, Quảng NgãiLy Son is an archipelago with two islands - Ly Son and An Binh which are belonging to Quang Ngai province in Central Vietnam. Until now, there have been few studies on seaweeds at Ly Son. This article presents results of two field surveys, conducted in November, 2009 and May, 2010 under the research project “Surveying and assessing status of ec...
13 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 614 | Lượt tải: 0
Some meteo - Hydro - dynamical features in mekong river mouth areaFrom study results it can be stated that: 1. Distributions of wind and wave characteristics are corresponding to seasonal variation. Predominant wind and wave directions are NE during NE Monsoon period and W, SW during SW Monsoon period. During transition period the wind and wave are varying. The wind velocity and wave height during NE Monsoon ...
14 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 460 | Lượt tải: 0
Về những cấu trúc thủy động lực đặc thù gây xói lở - Bồi tụ tại dải ven bờ nam Trung BộSpecific hydro-dynamical structures include the clockwise ellipsoid eddies covering the whole open bays of central coastal zone and the narrow zones of diffraction-wave ray orthogonals constructed after changing over large promontaries and harbour breakwaters. First of them is main reason created important mouth accretion points in the bays of ...
16 trang | Chia sẻ: honghp95 | Ngày: 28/11/2020 | Lượt xem: 655 | Lượt tải: 0
