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    Home»Trending Now»Earth Tilted 31.5 Inches: A Surprising Impact of Human Activity
    Trending Now

    Earth Tilted 31.5 Inches: A Surprising Impact of Human Activity

    Recent scientific studies reveal a startling new impact of human activity on our planet: the Earth has tilted 31.5 inches (80 centimeters) due to the redistribution of groundwater. This phenomenon, tied closely to climate change, showcases how human-induced changes to Earth's water cycle are influencing not only the environment but also the planet’s rotation.
    Zayne PhamBy Zayne PhamNovember 24, 2024No Comments4 Mins Read2 Views
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    The Earth Has Tilted 31.5 Inches Due to Human Activity: Here’s What That Means. (Image Credit: Inked Pixels/Shutterstock.com)
    The Earth Has Tilted 31.5 Inches Due to Human Activity: Here’s What That Means. (Image Credit: Inked Pixels/Shutterstock.com)
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    Groundwater Pumping and Earth’s Tilt

    A groundbreaking study published in the journal Geophysical Research Letters has linked the Earth’s tilt to extensive groundwater pumping. This activity, primarily for irrigation and human consumption, has displaced approximately 2,150 gigatons of water from underground reservoirs to oceans between 1993 and 2010. This movement of mass has caused the Earth’s rotational pole to drift significantly, much like adding weight to a spinning top, altering its balance and spin.

    Total groundwater storage change on land (a) and the associated sea level variation (b) for 1993–2010 (in mm of water) that contributed to Earth tilted 31.5 inches. (Image Credit: Ki-Weon Seo)
    Total groundwater storage change on land (a) and the associated sea level variation (b) for 1993–2010 (in mm of water) that contributed to Earth tilted 31.5 inches. (Image Credit: Ki-Weon Seo / Geophysical Research Letters)

    Lead researcher Ki-Weon Seo, a geophysicist at Seoul National University, emphasizes:

    “Earth’s rotational pole actually changes a lot. Our study shows that among climate-related causes, the redistribution of groundwater actually has the largest impact on the drift of the rotational pole.”

    The study identifies regions like western North America and northwestern India as major contributors due to high levels of groundwater extraction.


    The Connection Between Earth’s Tilt and Sea-Level Rise

    The study also highlights the interconnectedness of Earth’s systems. As groundwater is pumped from beneath the surface and eventually flows into the oceans, it contributes to global sea-level rise. In less than two decades, this process has added 0.24 inches (6 millimeters) to global sea levels.

    Global mean sea level (GMSL) contributions from the Antarctic ice sheet (AIS) (a), Greenland ice sheet (GrIS) (b), mountain glaciers (c), soil moisture (d), artificial reservoirs behind dams (e) and groundwater (f). A NASA scientist also seems to have discovered this phenomenon of Earth tilted in 2016. (Image Credit: Ki-Weon / SeoGeophysical Research Letters)

    This reinforces previous findings from 2016, which first suggested that water redistribution could affect Earth’s rotation. The latest study provides concrete figures, showing that groundwater movement from midlatitude regions has the most significant impact on the planet’s rotational pole drift.

    NASA scientist Surendra Adhikari, involved in earlier research, noted:

    “They’ve quantified the role of groundwater pumping on polar motion, and it’s pretty significant.”

    Implications for Climate Change and Conservation

    The consequences of Earth has tilted 31.5 inches extend beyond the rotational pole drift. They underscore the broader impacts of human activity on the planet’s climate systems. As Seo points out:

    “I’m very glad to find the unexplained cause of the rotation pole drift. On the other hand, as a resident of Earth and a father, I’m concerned and surprised to see that pumping groundwater is another source of sea-level rise.”

    These findings highlight the urgent need for sustainable water management practices and increased awareness of how localized actions can have global repercussions. By understanding the effects of water redistribution on Earth’s systems, scientists and policymakers can develop strategies to mitigate further environmental damage.

    The researchers compare the observed polar motion (red arrow, “OBS”) to the modeling results without (dashed blue arrow) and with (solid blue arrow) groundwater mass redistribution. The model with groundwater mass redistribution is a much better match for the observed polar motion, telling the researchers the magnitude and direction of groundwater’s influence on the Earth’s spin. (Image Credit: Seo et al / Geophysical Research Letters)
    The researchers compare the observed polar motion (red arrow, “OBS”) to the modeling results without (dashed blue arrow) and with (solid blue arrow) groundwater mass redistribution. The model with groundwater mass redistribution is a much better match for the observed polar motion, telling the researchers the magnitude and direction of groundwater’s influence on the Earth’s spin. (Image Credit: Seo et al / Geophysical Research Letters)

    The Future of Earth’s Rotation and Timekeeping

    Interestingly, the Earth’s changing rotation may even affect timekeeping. Research suggests that these shifts could delay the addition of a “leap second” to the world clock, Coordinated Universal Time (UTC), which was initially expected in 2026 but might now occur in 2029.

    The revelation that Earth has tilted 31.5 inches due to human activity underscores the profound impact of groundwater pumping on our planet’s natural systems. This tilt, combined with rising sea levels and changes to Earth’s rotation, serves as a stark reminder of the interconnectedness of human actions and environmental consequences. Addressing this issue requires global cooperation and a commitment to sustainable water management to protect Earth’s delicate balance for future generations.


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