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#glacialisostaticadjustment — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #glacialisostaticadjustment, aggregated by home.social.

  1. 💧🌏 Greg Cocks @[email protected] ·

    Mapping Global GNSS Vertical Velocities To Solid Earth Figure Change
    --
    doi.org/10.1029/2026JB034224 <-- shared paper
    --
    labrujulaverde.com/en/2026/09/ <-- shared technical article
    --
    H/T @gregory Helmer | Professional Land Surveyor, Geospatial Engineer
    “[This paper] describes analysis of GNSS data showing the Earth's equator-to-pole radius difference is shrinking by ~1.8 mm/yr where previous glacial isostatic adjustment models accounted for ~0.3 mm/yr. This increasing change in the solid Earth with mass redistribution has the opposite effect on the geoid. The solid Earth is getting rounder while the geoid is becoming more oblate…”
    --
    “... PLAIN LANGUAGE SUMMARY: This study looks at how the shape of our planet is slowly changing over time. Earth is not a perfect sphere – it is slightly flattened at the poles and bulging at the equator. But this shape isn't fixed; it evolves due to natural processes like melting ice, shifting land, and changes in the Earth's surface and interior. To better understand these changes, we used satellite-based measurements of how the Earth's surface moves up or down in different places. We developed a method to analyze this data and track whether Earth is becoming more or less flattened over time. Our results indicate an acceleration of polar uplift accompanied by a comparably increasing rate of equatorial subsidence. This means that solid Earth's overall shape is becoming slightly less flattened. We further find that this geometric change is not fully mirrored in the Earth's gravity field, indicating that the geometric response of the solid Earth and the gravity field response to mass-redistribution do not evolve identically. These findings are important because they help scientists understand how the planet responds to melting glaciers and shifting water. This kind of knowledge is essential for tracking climate change and its impact on Earth's long-term behavior…”
    #Geodesy #GNSS #Geophysics #Geoid #oblate #SolidEarth #GlacialIsostaticAdjustment #MassRedistribution #Geospatial #Geomatics #Surveying #RemoteSensing #SatelliteData#EarthScience #Geoscience #ClimateChange #GIS #spatial #mapping #spatialanalysis #global #datum #datums #solidearth #rounder #change #isostatic #isostaticadjustmentmodel #massredistribution

    #geodesy #gnss #geophysics #geoid #oblate #solidearth
  2. 💧🌏 Greg Cocks @[email protected] ·

    Mapping Global GNSS Vertical Velocities To Solid Earth Figure Change
    --
    doi.org/10.1029/2026JB034224 <-- shared paper
    --
    labrujulaverde.com/en/2026/09/ <-- shared technical article
    --
    H/T @gregory Helmer | Professional Land Surveyor, Geospatial Engineer
    “[This paper] describes analysis of GNSS data showing the Earth's equator-to-pole radius difference is shrinking by ~1.8 mm/yr where previous glacial isostatic adjustment models accounted for ~0.3 mm/yr. This increasing change in the solid Earth with mass redistribution has the opposite effect on the geoid. The solid Earth is getting rounder while the geoid is becoming more oblate…”
    --
    “... PLAIN LANGUAGE SUMMARY: This study looks at how the shape of our planet is slowly changing over time. Earth is not a perfect sphere – it is slightly flattened at the poles and bulging at the equator. But this shape isn't fixed; it evolves due to natural processes like melting ice, shifting land, and changes in the Earth's surface and interior. To better understand these changes, we used satellite-based measurements of how the Earth's surface moves up or down in different places. We developed a method to analyze this data and track whether Earth is becoming more or less flattened over time. Our results indicate an acceleration of polar uplift accompanied by a comparably increasing rate of equatorial subsidence. This means that solid Earth's overall shape is becoming slightly less flattened. We further find that this geometric change is not fully mirrored in the Earth's gravity field, indicating that the geometric response of the solid Earth and the gravity field response to mass-redistribution do not evolve identically. These findings are important because they help scientists understand how the planet responds to melting glaciers and shifting water. This kind of knowledge is essential for tracking climate change and its impact on Earth's long-term behavior…”
    #Geodesy #GNSS #Geophysics #Geoid #oblate #SolidEarth #GlacialIsostaticAdjustment #MassRedistribution #Geospatial #Geomatics #Surveying #RemoteSensing #SatelliteData#EarthScience #Geoscience #ClimateChange #GIS #spatial #mapping #spatialanalysis #global #datum #datums #solidearth #rounder #change #isostatic #isostaticadjustmentmodel #massredistribution

    #geodesy #gnss #geophysics #geoid #oblate #solidearth
  3. 💧🌏 Greg Cocks @[email protected] ·

    Mapping Global GNSS Vertical Velocities To Solid Earth Figure Change
    --
    doi.org/10.1029/2026JB034224 <-- shared paper
    --
    labrujulaverde.com/en/2026/09/ <-- shared technical article
    --
    H/T @gregory Helmer | Professional Land Surveyor, Geospatial Engineer
    “[This paper] describes analysis of GNSS data showing the Earth's equator-to-pole radius difference is shrinking by ~1.8 mm/yr where previous glacial isostatic adjustment models accounted for ~0.3 mm/yr. This increasing change in the solid Earth with mass redistribution has the opposite effect on the geoid. The solid Earth is getting rounder while the geoid is becoming more oblate…”
    --
    “... PLAIN LANGUAGE SUMMARY: This study looks at how the shape of our planet is slowly changing over time. Earth is not a perfect sphere – it is slightly flattened at the poles and bulging at the equator. But this shape isn't fixed; it evolves due to natural processes like melting ice, shifting land, and changes in the Earth's surface and interior. To better understand these changes, we used satellite-based measurements of how the Earth's surface moves up or down in different places. We developed a method to analyze this data and track whether Earth is becoming more or less flattened over time. Our results indicate an acceleration of polar uplift accompanied by a comparably increasing rate of equatorial subsidence. This means that solid Earth's overall shape is becoming slightly less flattened. We further find that this geometric change is not fully mirrored in the Earth's gravity field, indicating that the geometric response of the solid Earth and the gravity field response to mass-redistribution do not evolve identically. These findings are important because they help scientists understand how the planet responds to melting glaciers and shifting water. This kind of knowledge is essential for tracking climate change and its impact on Earth's long-term behavior…”
    #Geodesy #GNSS #Geophysics #Geoid #oblate #SolidEarth #GlacialIsostaticAdjustment #MassRedistribution #Geospatial #Geomatics #Surveying #RemoteSensing #SatelliteData#EarthScience #Geoscience #ClimateChange #GIS #spatial #mapping #spatialanalysis #global #datum #datums #solidearth #rounder #change #isostatic #isostaticadjustmentmodel #massredistribution

    #isostaticadjustmentmodel #isostatic #change #rounder #datums #datum
  4. 💧🌏 Greg Cocks @GregCocks ·

    Mapping Global GNSS Vertical Velocities To Solid Earth Figure Change
    --
    doi.org/10.1029/2026JB034224 <-- shared paper
    --
    labrujulaverde.com/en/2026/09/ <-- shared technical article
    --
    H/T @gregory Helmer | Professional Land Surveyor, Geospatial Engineer
    “[This paper] describes analysis of GNSS data showing the Earth's equator-to-pole radius difference is shrinking by ~1.8 mm/yr where previous glacial isostatic adjustment models accounted for ~0.3 mm/yr. This increasing change in the solid Earth with mass redistribution has the opposite effect on the geoid. The solid Earth is getting rounder while the geoid is becoming more oblate…”
    --
    “... PLAIN LANGUAGE SUMMARY: This study looks at how the shape of our planet is slowly changing over time. Earth is not a perfect sphere – it is slightly flattened at the poles and bulging at the equator. But this shape isn't fixed; it evolves due to natural processes like melting ice, shifting land, and changes in the Earth's surface and interior. To better understand these changes, we used satellite-based measurements of how the Earth's surface moves up or down in different places. We developed a method to analyze this data and track whether Earth is becoming more or less flattened over time. Our results indicate an acceleration of polar uplift accompanied by a comparably increasing rate of equatorial subsidence. This means that solid Earth's overall shape is becoming slightly less flattened. We further find that this geometric change is not fully mirrored in the Earth's gravity field, indicating that the geometric response of the solid Earth and the gravity field response to mass-redistribution do not evolve identically. These findings are important because they help scientists understand how the planet responds to melting glaciers and shifting water. This kind of knowledge is essential for tracking climate change and its impact on Earth's long-term behavior…”
    #EarthScience

    #geodesy #gnss #geophysics #geoid #oblate #solidearth