Coastline change

This study aims to provide updated results of the changing trend of accretion/erosion of the coastline from Cape Ca Mau to Kien Giang in 2021-2023. Specifically, the rate and area of erosion/accretion considered. Remote sensing and GIS tools are used. As a result, in Ngoc Hien district, Ca Mau, the erosion rate is 55.66 m/year, and the erosion area is 47.21 hectares, ranking highest compared to other districts in the same study area.

13p vijaychest 24-04-2024 5 2   Download

The study "Impacts of urbanization and population growth on land cover and coastline changes based on remote sensing and GIS technique for Vietnamese coastal regions" applies two methods to assess the effects of urbanization through land use change and coastline change in Rach Gia, one of the country’s fastest-growing cities in recent decades:(1) Assessment of land use changes: The study utilizes medium-resolution Landsat satellite imagery (30 m) observed at multiple time points from 2010 to 2020.

12p tukhauquantuong1011 22-04-2024 6 3   Download

This book presents a broad overview of the current state of knowledge regarding the Red Sea, from its geological formation and oceanographic development to the environmental influences on its ecology and the changes it is experiencing due to the rapid development of its coastlines and role as one of the world’s major transport routes.

627p duongthandue0501 28-02-2024 3 1   Download

Nam O marine sand percentage adding was mentioned via DCS and nDCS variations in design time from 3 days to 90 days. Results highlight Nam O marine sand adding to concrete fine aggregate mix gives a dramatical changes of DCS and nDCS before 28 days and non-change for a time after 28 days to 90 days. The DCS is higher from 5 to 10% than nDCS for using this study marine sand and that provide many considerations in term of local material.

10p nhanchienthien 25-07-2023 5 2   Download

Viet Nam’s coastline faces many natural and human-induced threats, such as erosion, floods, sea-level changes, pollution and saltwater intrusion. Low lying deltas, such as the Mekong Delta and the Red River Delta of Viet Nam are frequently subjected to such threats. The present study investigated the degradation of mangrove forests and changes in shoreline along the coast of Ben Tre.

12p vidudley 20-02-2023 6 2   Download

The rapid global population growth leads to considerable rising consumption of natural resources such as air, water, and land. The demand for land has increased in the last two decades, both inland and seaside. Land reclamation along with the coastline has been preferred as a solution for modern urban development, such as three land reclamation projects in Rach-Gia Bay, the Vietnamese Mekong Delta.

6p vimalfoy 08-02-2023 4 2   Download

Mangrove forests are intertidal wetlands and found along tropical, subtropical, and warm-temperate coastlines. They also offer valuable ecosystem services. However, mangrove forests are especially vulnerable as typhoons frequently hit during the monsoon season and under driving human pressures.

12p vilamborghini 12-10-2022 6 3   Download

Tra Vinh coast is approximately 65 km long and extends on NE-SW trend between two main river mouths of the Mekong River, Mekong River Delta. Based on satellite image analyses and field surveys, coastline change is identified since 1966 to present. The coastline change is mainly controlled by natural process showing alternation of accretive and erosive coasts from that accresion coast occurred widespread with rate of 5-10 m/yr, conversely, erossion coast occupied locally with rate of 5-8 m/yr during 1966 to 1989.

4p viwendy2711 05-10-2021 9 1   Download

In this study, Sentinel–1A satellite imagery is used to extract the coastline in Phan Thiet City. The boundary between land and water is determined by a two–step process: fuzzy clustering and interactive thresholding. Subsequently, the coastline in the study area was extracted into vector form. Finally, this shoreline is compared to manually digitized shoreline. There are 350 locations considered to determine the distance between two shorelines, of which 274 locations (77%) are 0 to 5 m (equivalent to ½ pixel) and 76 (23%) locations are over 5 m.

10p cothumenhmong8 05-11-2020 26 1   Download

The Day river coastal zone is the place of plentiful and eventful economical activities and the natural habitat of diverse endemic species that should be preserved and developed. According to the updated geological, remote-sensing and oceanographic data sources, this study figures out the actual state, evolutional history and forecasts the development of the Day river coastal zone up to the year 2070, which could be used to improve the effectiveness of the long-term spatial coastal zone management and master planning.

11p caygaocaolon6 22-07-2020 27 1   Download

A study of coastal erosion along the Ponnani coast using multispectral imageries and GIS was undertaken to assess the temporal changes in coastal erosion, its extent, magnitude, and trends in the region under study. The study utilized medium resolution LANDSAT imageries for the mapping and monitoring of the coastline erosion. The digital image processing software used for calculating the erosion rate was TNTmips 2014 professional version (Map and Image Processing System - MIPS) by MicroImages, Inc. Results showed that many places along the Ponnani shoreline are under severe erosion.

12p quenchua4 06-04-2020 19 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

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

Mangroves play an important role in coastal zones in many aspects e.g. extremely essential habitats for many species, coastlines protection from natural hazards, and so on. However, in Vietnam, like in other developing countries, these mangrove areas have been destroyed and encroached as a consequence of a poorly planned economic development. The study has been conducted in Phu Long - Gia Luan region, which have the largest mangrove area in the Cat Ba Archipelago Biosphere Reserve, Hai Phong City, Vietnam. The aims of the study are to investigate existing land...

12p dem_thanh 22-12-2012 84 6   Download

  Nowadays,  there  are  many  methods  to  study  shoreline  change  in  coastal  engineering.  Among  them,  mathematical  methods  are  considered  as  effective  ones  that  have  been  used  for  a  long  time.  LITPACK  is  a  numerical  model  in  MIKE  software  package,  developed  by  Danish  Hydraulic  Institute  (DHI),  for  simulating  non‐cohesive  sediment  transport  in  wave  and  currents,  littoral  drift,  coastline  evolution  and  profile  development  along ...

9p dem_thanh 22-12-2012 45 5   Download

Continental shelves are the gently sloping areas of the ocean floor, contiguous to the continent, that extend from the coastline to the shelf-break. The shelf break, which is located around 150–200 meters depth, is the area of the continental margin where there is an abrupt change between the shelf and the steeper continental slope. Primary production in the oceans, i.e. the production of organic compounds from dissolved carbon dioxide and nutrients through photosynthesis, is often associated with upwellings (Botsford et al., 2006).

64p lulanphuong 19-03-2012 62 7   Download