TEHRAN-- An expense on risks of land subsidence and the technique to handle it is being finalized at the supreme council of provinces.The costs is being completed and will be voted on in the existing month to be sent to the Majlis (the Iranian parliament), ISNA reported.By implementing a subsidence rate keeping track of strategy, researchers at the National Cartographic Center recognized 252 regions that are suffering from land subsidence.Reports reveal that 98 percent of the subsidence is triggered by excessive extraction of underground water and mismanagement of water resources.Geologists call subsidence a quiet earthquake because an earthquake is instant and its results show up at the exact same time, but subsidence is the cause of ecological deficiency and its impact appears gradually; which is getting a huge threat in the country.Land subsidence, a steady settling or unexpected sinking of the Earths surface area due to subsurface motion of earth materials is generally caused by aquifer-system compaction, drain, and decay of natural soils, underground mining, oil and gas extraction, hydro compaction, natural compaction, sinkholes, and thawing permafrost.Subsidence results in considerable financial losses in the type of structural damage and high upkeep costs.

This impacts roads and transport networks, hydraulic infrastructure, sewage systems, structures, and structures.

The total damage worldwide is approximated at billions of dollars annually.With the spread of dry spells and absence of correct water management, the progressive land subsidence has actually become a regular threat to the country.When the quantity of harvest is higher than the quantity of nourishment of the underground aquifers, the earth moves down and finally, the soil particles are compressed together, and in such a scenario, the phenomenon of subsidence handles another significance; It suggests death of aquifers .

The scope of this manufactured phenomenon has advanced to such a level that scientists in this field explain it with words such as cancer , irreparable danger and death of the earth .

In order to offer a perspective of the nations subsidence rate, the National Cartographic Center began a job in this field in 2016.

Morteza Seddiqi, an official with the Organization, told ISNA that using satellite data and images is one of the methods that have actually been implemented to examine the rate of subsidence of the whole country.

Based on the studies performed on these images, we have actually identified as lots of as 252 subsidence areas in the country.

Two main factorsIn 2021, Gholam-Ali Jafarzadeh, the previous head of the National Cartography Center, lamented that some 29 provinces are currently at danger of subsidence.He named two factors of climate modification and human intervention as the most important factors of land subsidence in the country and noted that it is anticipated that we take measures to reduce the pressure on the environment.He added that 80 percent of the groundwater is withdrawn yearly in Iran, which outmatches the global rate.In the whole world, water resources withdrawal is between 3 to 20 percent, and when it reaches 40 to 60 percent it is thought about problematic, and it will be a crisis when exceeding 60-80 percent, he noted.Over the past decades, a few of the aquifer levels stopped by 100 centimeters.Inefficient irrigation techniques in addition to digging unlawful wells are the other primary causes of groundwater extraction-induced subsidence, as out of 50,000 wells pumping underground water resources in the capital, 30,000 are illegal.It needs to be noted that over the next 40 years, the countrys temperature will rise by 2.6 degrees on Celsius Scale, which will increase the countrys requirement for more water resources.MG