Dhritiraj Sengupta

University of Southampton · Department of Geography and Environment

Over recent decades, seaports around the world have been expanding seaward through land reclamation at a scale and pace that geospatial analysis of global satellite imagery is now revealing. Understanding patterns of seaport growth is necessary to accurately estimate risk to seaport infrastructure from future coastal hazards. What the global trend...

Increasing population size and economic dependence on the coastal zone, coupled with the growing need for residential, agricultural, industrial, commercial and green space infrastructure, are key drivers of land reclamation. Until now, there has been no comprehensive assessment of the global distribution of land use on reclaimed space at the coast....

Aquaculture plays a crucial role in the global food security and nutrition supply, where China accounts for the largest market share. Although there are some studies that focus on large-scale extraction of coastal aquaculture ponds from satellite images, they have often variable accuracies and encounter misclassification due to the similar geometri...

Many leading countries are boosting renewables, especially solar energy, as a major way to mitigate future energy crises and climate change. Particularly, in China, the number and scale of photovoltaic (PV) power stations have grown unprecedentedly in the last decade. There is an urgent need to monitor the PV power development in order to accuratel...

It is now widely accepted that telecommunications advancement will boost the economy in numerous ways. Therefore, continuous advancement in this field is important to keep up with the emerging challenges of the modernized world. 5G or 5th generation mobile communication has already taken place in major countries including China, UK, USA, India, Ger...

This study of vegetation dynamics in the coastal region of Tanzania provides a fundamental basis to better understand the nature of the factors that underlie observed changes. The Tanzanian coast, rich in biodiversity, is economically and environmentally important although the understanding of the nature and causes of vegetation change is very limi...

The basins containing rivers and wetlands are very significant to the surrounding dwellers in various ways, altogether aiming at boosting the economy for most developing countries. Unfortunately, the benefits are frequently overlooked and lead to basin mismanagement and degradation posed by increasing population. This study used population and sate...

Research on the Himalayan cryosphere has increasingly focused on climate change, considering aspects such as snow cover dynamics, precipitation and temperature trends. The Uttarakhand Himalaya is hydrologically very signiicant and a more comprehensive understanding of its response to climate change is needed. This paper analyses of elevation-depend...

Offshore wind farms are widely adopted by coastal countries to obtain clean and green energy; their environmental impact has gained an increasing amount of attention. Although offshore wind farm datasets are commercially available via energy industries, records of the exact spatial distribution of individual wind turbines and their construction tra...

The growth of tidal flats off Zhejiang coasts in southwestern China has provided substantial areas for local agriculture and construction activities. To evaluate modern and future development of tidal flats in the region, a good understanding of sediment sources is necessary. Previous research has concluded that the Changjiang (Yangtze) River is th...

Although coastal aquaculture ponds provide high-quality fish protein for billions of people, they are threatened by urbanization, pollution, and climate change. Moreover, colossal aquaculture ponds pose damages such as natural wetland shrinkage and water quality deterioration. However, understanding the trends and drivers of coastal aquaculture pon...

Many coastal cities are short of land for development and, coupled with the need to mitigate the impact of extreme events against a background of ongoing sea-level rise, coastal land reclamation (CLR) has emerged as a frequently applied solution, most especially in Asia. However, the sustainability of these newly reclaimed lands under the combined...

This paper analyses the spatio-temporal trends and variability in annual, seasonal, and monthly rainfall with corresponding rainy days in Bhilangana river basin, Uttarakhand Himalaya, based on stations and two gridded products. Station-based monthly rainfall and rainy days data were obtained from the India Meteorological Department (IMD) for the pe...

It is widely accepted that networks are getting more complex and it needs smarter ways to deliver an optimum capability of the network in reality. Millimeter wave will help to meet the demand as it will provide the higher bandwidth that is needed for 5G. But these higher frequencies also come with challenges, such as low signal penetration, that we...

Increasing demand for land resources at the coast has exerted immense pressure on vulnerable environments. Population and economic growth in coastal cities have combined to produce a scarcity of suitable space for development, the response to which has frequently been the reclamation of land from the sea, most prominently in China. Urbanization is...

Indian cities are on the cross roads of rapid urban growth, which calls for meticulous and everlasting urban spatial planning. Cities live for longer and it should be compatible for the future growth. The previous mistakes committed in the land use planning have lead to many serious issues like floods (e.g., Chennai 2015 and Mumbai 2005 Floods) fir...

Karnataka state is the second most drought-prone region in India next only to Rajasthan. Even then, the traditional cropping land use pattern in the state has kept the people and the agriculture alive. But the recent onslaught of the high-yield variety seeds and western crops are posing a serious threat to the sustainability of the region. Located...

The increase in global population has been accompanied by rising consumption of natural resources such as clean air, water and land. Demand for land has increased significantly over the past 30 years or so, both inland and at the coast. In coastal regions, reclaiming land from the sea has often been the preferred solution towards meeting the need f...