Red tide

Kim Son coastal plain is a part of the Red River Delta located between Day and Can rivers. Over the past 55 years, Kim Son coastal plain has been the region with the highest accretion rate in the Red River Delta. This study aims to clarify the sediment characteristics of Kim Son coastal plain. It has the structure of a typical tidal flat and a relatively straightforward tide-influenced sedimentary structure evidenced by the field observation, sampling 70 hand-drilled boreholes, borehole logging and analyzing 177 samples of grain size.

11p vielonmusk 21-01-2022 15 0   Download

Diatoms play a great role in carbon fixation with about 20% of the whole fixation in the world. However, harmful algal bloom as known as red tide is a major problem in environment and fishery industry. Even though intensive studies have been conducted so far, the molecular mechanism behind harmful algal bloom was not fully understood. There are two major diatoms have been sequenced, but more diatoms should be examined at the whole genome level, and evolutionary genome studies were required to understand the landscape of molecular mechanism of the harmful algal bloom.

12p vitzuyu2711 29-09-2021 15 1   Download

Karanja estuary, an important estuarine ecosystem located adjoining to the Jawaharlal Nehru Port (largest container handling Seaport in India), Raigad district of Maharashtra. The North West coast of India is famous for the dol nets fishery. Dol nets (a kind of bag net) are operated in coastal seas having strong tidal currents and amplitude with its mouth opening always facing towards the direction of the tide.

9p cothumenhmong3 22-02-2020 17 1   Download

Nam Dinh province is located in the Red river delta with a relatively flat terrain. The North East of Nam Dinh is bordered by the Red river and the southwest by the Day river and has a coastline of approximately 80 km. Given the geographical location, Nam Dinh has favourable conditions for agricultural and aquaculture production. Climate change creates a large number of potential risks for Nam Dinh. This includes sea level rise, typhoons, flood tide, etc.

8p caygaocaolon1 13-11-2019 24 1   Download

To determine the occurrence of dominant phytoplanktonic species causing red tides along the eastern Black Sea (Trabzon) coast of Turkey, multiple samples were collected periodically between 1991 and 2001. Red tide events were observed only during the periods between February and July. Six phytoplanktonic species causing 5 red tide events detected were Diplopsalis lenticula, Euglena acusformis, Eutreptia lanowii, Pyramimonas orientalis, Scrippsiella trochoidea, and Gymnodinium sanguineum.

5p vimessi2711 02-04-2019 27 0   Download

This study focuses on the use of remotely sensed data for monitoring coastline changes in the Red River Delta during the 1998 to 2008 period. For the satellite image data processing, the shoreline was defined as the mean sea level on the muddy coast where the tide is the dominant dynamic factor and as the mean high sea level on the sandy coast where the ocean waves are the dominant dynamic factor.

10p miulovesmile 09-10-2018 46 1   Download

Hiện tượng nở hoa nước (water bloom) hay còn gọi là Thủy triều đỏ (red tide) là thuật ngữ chỉ sự nở hoa của các loài vi tảo. Đây là hiện tượng tự nhiên xảy ra do mật độ tế bào vi tảo gia tăng lên đến hàng triệu tế bào/lít (thông thường có khoảng 10 - 100 tế bào vi tảo/ml, nhưng trong trường hợp “nở hoa” mật độ có thể lên trên 10.000 tế bào/ml) làm biến đổi màu của nước biển từ xanh lục đậm, đỏ cho đến vàng xám....

41p ngocnghech_2810 18-10-2011 590 130   Download

Chắc chắn chúng ta đã từng nghe đến sự kiện “red tide”. Tiếng anh chữ này có nghĩa là đỏ, hoặc nước mặt biển biến sang màu nâu bởi hiện tượng bùng phát của một số loại tảo. Thông thường hiện tượng này là do một số tảo độc tạo ra, tuy nhiên không phải lúc nào cũng vậy. Khi đi trên tàu, chúng ta thường quan sát thấy các chấm đỏ khuấy trộn trong nước.

29p kemoc8 24-07-2011 315 101   Download