study | The land deflection is 80 cm towards the east due to the continuous withdrawal of groundwater

2023-06-21 2023-06-21T08:20:09Z
سنان خلف
سنان خلف
محرر أخبار جوية- قسم التواصل الاجتماعي

<p style=";text-align:left;direction:ltr">Arab weather - Sinan Khalaf - serious consequences for the consumption of groundwater in the ground, which led to a deviation of 80 cm (31.5 inches) to the east between 1993 and 2010 only.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> This recent study was revealed by the scientific journal &quot;AGU&quot;, and based on climate models, scientists previously estimated that humans pumped 2,150 gigatonnes of groundwater, equivalent to more than 6 millimeters (0.24 inches) of sea level rise, in the period from 1993 to 2010, but validation of this estimate is difficult.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> One approach studies the Earth&#39;s rotational pole, which is the point around which the planet orbits; As it moves through a process called polar motion; The position of the Earth&#39;s rotational pole changes relative to the crust.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> The distribution of water on the planet affects how the mass is distributed; Which directly affects the Earth&#39;s rotation.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> &quot;The Earth&#39;s rotation pole actually shifts a lot,&quot; said Ki-wyun Seo, a geophysicist at Seoul National University, who led the study. &quot;Our study shows that among the climate-related causes, groundwater redistribution actually has the greatest impact on pole drift.&quot; .</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> The ability of water to change the Earth&#39;s rotation was discovered in 2016, and so far the specific contribution of groundwater to these rotational changes has not been explored.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> In the new study, published in the scientific journal Scitechdaily, the researchers modeled the observed changes in Earth&#39;s rotational pole drift and water movement, taking into account only ice sheets and glaciers, then adding different scenarios for groundwater redistribution.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> Once the researchers included 2,150 gigatonnes of groundwater redistribution, the model deviated by 78.5 cm (31 in), or 4.3 cm (1.7 in), per year.</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> &quot;I am very happy to find the unexplained cause of shaft drift,&quot; Seo said. &quot;On the other hand, as a land-dweller and parent, I am concerned and amazed to see that groundwater pumping is another source of sea level rise.&quot;</p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> &quot;This is an amazing contribution, and definitely an important documentation,&quot; said Surendra Adhikari, a research scientist at NASA&#39;s Jet Propulsion Laboratory, who was not involved in the study.</p>

This article was written originally in Arabic and is translated using a 3rd party automated service. ArabiaWeather is not responsible for any grammatical errors whatsoever.
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