Tag

Earth Rotation

All articles tagged with #earth rotation

science11 days ago•6 min saved

Three Gorges Dam Tiny Spin: NASA Calculations Show Subtle Shift in Earth's Rotation

NASA scientists calculated that filling the Three Gorges Dam reservoir would lengthen the length of day by about 0.06 microseconds and shift Earth’s pole by roughly 2 centimeters due to moving 40 cubic kilometers of water higher up; the effect is minuscule compared with the Moon’s tidal slowing and other mass redistributions such as groundwater pumping and ice melt. It’s a real but negligible physical consequence of large-scale engineering, not a weapon or warning.

via The Daily Galaxy|

#earth-rotation #geophysics #mass-redistribution

science17 days ago•5 min saved

Humans Are Lengthening Earth's Day, New Study Finds

Researchers show Earth's day is lengthening by about 1.33 milliseconds per century due to climate-driven mass shifts from melting ice, using fossil foraminifera and a physics-informed deep learning model; the trend could soon surpass the Moon's influence, with implications for communications and space navigation, per a Journal of Geophysical Research: Solid Earth study.

via ScienceAlert|

#climate-change #earth-rotation #foraminifera

science17 days ago•7 min saved

Climate-Driven Spin: Melting Ice Lengthens Earth’s Day and Nudges GPS

New research ties climate-driven water redistribution from melting ice to a measurable slowdown in Earth’s rotation, lengthening the day by about 1.3 milliseconds per century. By analyzing 3.6 million years of benthic foraminifera fossils and deep learning, scientists find this rate is unprecedented in the Quaternary and could, by the end of the century, surpass the Moon’s tidal effect, complicating leap seconds and precise GPS-based navigation.

via The Daily Galaxy|

#climate-change #day-length #earth-rotation

science26 days ago•50 min saved

Climate change lengthens Earth's day, study finds

A study by researchers from the University of Vienna and ETH Zurich finds Earth’s day is lengthening by about 1.33 milliseconds per century due to climate‑driven mass redistribution from melting polar ice and mountain glaciers, moving water from land to oceans and slowing Earth's rotation. This unprecedented pace in 3.6 million years could subtly affect GPS satellites and space missions over time, though the change is far too small for people to notice; by the end of the century, climate-driven effects could rival the Moon's influence on day length.

via Ground News|

#climate-change #earth-rotation #foraminifera

science1 month ago•4 min saved

Moon Slowly Recedes, Extending Earth's Day by Fractions Each Year

NASA measurements show the Moon is moving away from Earth at about 3.8 centimeters per year, transferring rotational energy from Earth to the Moon and gradually lengthening the length of a day. Fossil shells indicate shorter past days (roughly 23.5 hours around 70 million years ago), and the ongoing tidal evolution will continue to lengthen Earth's day by tiny amounts over millions of years.

via The Daily Galaxy|

#earth-rotation #fossil-records #lunar-recession

science3 months ago•5 min saved

Earth's Day Lengths Have Changed Dramatically Over Billions of Years

Research shows that for about a billion years, Earth's day lasted around 19 hours due to a balance between lunar tidal forces and atmospheric tides, with long periods of stability interrupted by episodes of faster or slower rotation, influencing Earth's climate and oxygen levels over geological time.

via Earth.com|

#ancient-earth #day-length #earth-rotation

science3 months ago•4 min saved

Scientists develop device harnessing Earth's rotation for electricity

Scientists in the US have developed a device that can generate tiny amounts of electricity by harnessing Earth's rotation and magnetic field, suggesting a potential, though currently impractical, new energy source if scaled up. The experiment involved a specially shaped ferrite shell that avoids the usual cancellation of voltage caused by electromagnetic forces, producing measurable microvolts as Earth spins. While promising, the technology is in early stages, and further independent testing is needed to verify and explore its scalability.

via Earth.com|

#earth-rotation #electricity-generation #energy-source

science3 months ago•5 min saved

Earth's Day Lengths Have Changed Over Billions of Years

Research shows that for about a billion years, Earth's day lasted roughly 19 hours due to a balance between lunar tidal forces and atmospheric tides, creating long periods where day length remained stable before gradually increasing to 24 hours, impacting Earth's climate and oxygen levels.

via Earth.com|

#ancient-earth #day-length #earth-rotation

science5 months ago•4 min saved

Why Flying Against Earth's Rotation Doesn't Shorten Flight Times

Flying against Earth's rotation does not speed up flights because objects and atmosphere move with the Earth due to inertia and frictional forces, and jet streams—fast-moving air currents influenced by Earth's rotation—affect flight durations more than the Earth's spin itself.

via IFLScience|

#atmosphere #earth-rotation #flight-times

science6 months ago•3 min saved

Scientists Explain Why Days Are Getting Shorter

Earth's days are slightly getting shorter due to factors like atmospheric winds, ocean currents, Earth's internal movements, and lunar gravitational pull, with the shortest day on August 5, 2025, measuring just 86,399.99867 seconds. These tiny variations, measurable with precise instruments like atomic clocks and quasars, impact systems like GPS and are influenced by both short-term weather patterns and long-term geophysical processes.

via Neowin|

#earth-rotation #geophysical-changes #leap-seconds

science8 months ago•2 min saved

Earth's Rotation Speed Changes: Shortest Day on Record or Warning Sign?

On August 5, 2025, Earth experienced a slight slowdown in its rotation, making the day about 1.45 milliseconds longer due to atmospheric, oceanic, and internal planetary factors, highlighting the complex and dynamic forces influencing our planet's spin.

via WION|

#atmospheric-conditions #earth-rotation #internal-earth-processes

science8 months ago•2 min saved

Earth's Spin Accelerates, Making August 5 One of the Shortest Days Ever

Earth is spinning slightly faster than usual, making August 5 one of the shortest days on record, likely due to the moon's position, but scientists are still unsure why this acceleration is happening, especially since Earth's rotation has generally been slowing down over millions of years.

via CNET|

#earth-rotation #earths-core #moon-influence

science8 months ago•4 min saved

Earth's Rotation Anomalies and Their Implications for Our Planet's Future

On August 5, 2025, Earth will complete its rotation 1.51 milliseconds earlier, an unexplained acceleration that challenges current scientific understanding and could impact global timekeeping systems, prompting concerns about Earth's dynamic stability and our ability to adapt to rapid planetary changes.

via Energy Reporters|

#2025-event #earth-rotation #leap-second

science8 months ago•4 min saved

Human-Made Dams Have Caused Earth's Poles to Shift by 31.5 Inches

A study reveals that human groundwater extraction has caused Earth's rotational axis to shift by 31.5 inches in less than two decades, impacting climate patterns and contributing to sea level rise, highlighting significant environmental consequences of water redistribution.

via The Daily Galaxy|

#climate-change #earth-rotation #geophysics

science8 months ago•4 min saved

Earth's Days Shorten as Scientists Warn of Global Disruptions

Scientists have observed that Earth's rotation is accelerating, leading to the possibility of introducing a negative leap second to maintain time synchronization, which could cause significant disruptions in global time-dependent systems.

via The Daily Galaxy|

#earth-rotation #global-disruptions #leap-second