Processes of salt intrusion essay
Saltwater intrusion into the coastal aquifer, a phenomenon caused by the flow of seawater into freshwater aquifers, originally caused by groundwater extraction near the coast, has long been recognized as a major problem around the world. In this study we used geophysical and geochemical techniques to map and provide evidence that, being located in geologically active environments, the distribution of water types is often influenced by long-term geological processes, for example sea level fluctuations . From a water management perspective, coastal aquifers are vulnerable to salinization of fresh groundwater due to seawater intrusion and rising. The future doesn't look good either: seawater intrusion is a pressing problem in coastal aquifers worldwide. Surface water sources, such as rivers and canals, are seriously affected by saltwater intrusion 1,2. In the megadelta coastal areas of Vietnam, Bangladesh, and India, surface and near-surface drinking water are most susceptible to contamination by saline. This rice-shrimp farming system illustrates how agricultural practices can adapt to environmental challenges. It represents a resilient response to saltwater intrusion that aligns with the principles of NBS – harnessing natural processes to create sustainable and adaptive agricultural systems in an era of changing and rising climate. The extreme salt intrusion events are considered cases in which salty ocean water is intruded inland much further upstream than normal, endangering low-lying coastal communities. The saline intrusion showed significant spatial and temporal variability during the dry season. The salinity intrusion expanded kilometers inland at the end of the dry season in March. Desalination – the conversion of salt water into fresh water – has been limited by high operating costs. A new device that can convert desalination waste into commercially valuable chemicals. Rising sea levels and stronger storm surges could cause a northward migration of the saltwater front in the lower Hudson River estuary, exposing tidally influenced freshwater marshes to saltwater. Previous research has documented changes in tidal marsh biogeochemistry in response to salinity intrusion due to, Prandle, D. 1998. Global expressions for seasonal temperatures of the sea surface and ambient air: the influence of tidal currents and water depth. Oceanologica Acta, 21 3, 419-428. CrossRef Google Scholar. Prandle, D. Saline intrusion in partially mixed estuaries. Estuarine, Coastal and Shelf Science, 59, 385-397. Saltwater intrusion also damages the livelihoods and adaptive capacity of households, especially the vulnerability of coastal residents in agricultural subsistence to the shocks caused by salinity intrusion. The high salinity of freshwater due to seawater intrusion is a complex and geochemically interconnected phenomenon that can be detected by combining various geotracers and geoindicators. Salinity intrusion is one of the world's biggest environmental problems. The spatial variability of salt accumulation through soil profile was studied in Kalapara Upazila, Patuakhali, Expand