சென்னை கடலில் மூழ்கும் விரைவில் | ISRO ஆய்வுமையத்தின் அறிக்கை மற்றும் தமிழ்நாடு

2050 half of chennai will be under the sea ISRO report
There is a need to step up coastal protection measures as even a metre rise in average sea level would inundate large areas along Tamil Nadu coast, according to a recent study.
According to ISRO report and future sea level rise assessment of loss and damages conducted in 1015 predicts by 2050 the sea water will rise and occupy 144 square km of land area in chennai which will affect more that 10 lakh people .
Focussing on financial implications of the existing and proposed infrastructure on the coastline the report said, sea level rise (SLR) arising out of climate change “will affect the coastline in a variety of ways, including inundation, flood and storm water damage and salt water intrusion and wetland loss.”

2050 | half of chennai will be under the sea ISRO report | tamil news | tamil news today | redpix

#tamilnewslive
2050 half of chennai will be under the sea ISRO report | tamil news | tamil news today | redpix
tamil news today
There is a need to step up coastal protection measures as even a metre rise in average sea level would inundate large areas along Tamil Nadu coast, according to a recent study.
According to ISRO report and future sea level rise assessment of loss and damages conducted in 1015 predicts by 2050 the sea water will rise and occupy 144 square km of land area in chennai which will affect more that 10 lakh people .
Focussing on financial implications of the existing and proposed infrastructure on the coastline the report said, sea level rise (SLR) arising out of climate change “will affect the coastline in a variety of ways, including inundation, flood and storm water damage and salt water intrusion and wetland loss.”

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Intrusion and extrusion of water in hydrophobic nanopores

Intrusion and extrusion of water in hydrophobic nanopores. Antonio Tinti et al (2017), PNAS https://doi.org/10.1073/pnas.1714796114

Heterogeneous systems composed of hydrophobic nanoporous materials and water are capable, depending on their characteristics, of efficiently dissipating (dampers) or storing (“molecular springs”) energy. However, it is difficult to predict their properties based on macroscopic theories—classical capillarity for intrusion and classical nucleation theory (CNT) for extrusion—because of the peculiar behavior of water in extreme confinement. Here we use advanced molecular dynamics techniques to shed light on these nonclassical effects, which are often difficult to investigate directly via experiments, owing to the reduced dimensions of the pores. The string method in collective variables is used to simulate, without artifacts, the microscopic mechanism of water intrusion and extrusion in the pores, which are thermally activated, rare events. Simulations reveal three important nonclassical effects: the nucleation free-energy barriers are reduced eightfold compared with CNT, the intrusion pressure is increased due to nanoscale confinement, and the intrusion/extrusion hysteresis is practically suppressed for pores with diameters below 1.2 nm. The frequency and size dependence of hysteresis exposed by the present simulations explains several experimental results on nanoporous materials. Understanding physical phenomena peculiar to nanoconfined water paves the way for a better design of nanoporous materials for energy applications; for instance, by decreasing the size of the nanopores alone, it is possible to change their behavior from dampers to molecular springs.

What is TIDAL IRRIGATION? What does TIDAL IRRIGATION mean? TIDAL IRRIGATION meaning & explanation

What is TIDAL IRRIGATION? What does TIDAL IRRIGATION mean? TIDAL IRRIGATION meaning – TIDAL IRRIGATION definition – TIDAL IRRIGATION explanation.

Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license.

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Tidal Irrigation is the subsurface irrigation of levee soils in coastal plains with river water under tidal influence. It is applied in semiarid zones at the mouth of a large river estuary or delta where a considerable tidal range (some 2 m) is present. The river discharge must be large enough to guarantee a sufficient flow of fresh water into the sea so that no salt water intrusion occurs in the river mouth.

The irrigation is effectuated by digging tidal canals from the river shore into the main land that will guide the river water inland at high tide.

For the irrigation to be effective the soil must have a high infiltration capacity to permit the entry of sufficient water in the soil to cover the evapotranspiration demand of the crop.

At low tide, the canals and the soil drain out again, which promotes the aeration of the soil.

Basement construction

Learn how to prevent water seepage into the bricks through the basement.Why putting cement in between rocks leads to more problems?

In this video,Prasanth illustrates how the water intrusion happening through walls and guidelines to tackle water seepage at the time of basement construction itself.

Please share this video if you find it useful! Click here for more videos on design tips .

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Latest #designtips from #3dbricks , #Architectural consultant in Trivandrum. Useful guidelines for the prevention of #waterseepage and #moisture controls on walls. Strictly advice not to use #cement for #reinforcement at the time of #basement #construction. Gradual #water intrusion through #cementfillings destroys the walls up to 2-3 feet hights. Affects the total #interiors of the house in a distinct manner.