Data In Action: The 2022 Hunga-Tonga Hunga-Ha′Apai Eruption - Altimetry Data And Models Help Us Understand How A Volcanic Eruption Generated A Tsunami
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https://podaac.jpl.nasa.gov/DataAction-2025-03-20-The-2022-Hunga-Tonga-Hunga-Haapai-eruption-Altimetry-data-and-models-help-us-understand-how-a-volcanic-eruption-generated-a-tsunami <-- shared technical article
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https://doi.org/10.1038/s43247-024-01694-z <-- shared paper
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https://podaac.jpl.nasa.gov/dataset/JASON_CS_S6A_L2_ALT_LR_RED_OST_NTC_F08 <-- shared NASA dataset - Sentinel-6A MF Jason-CS L2 P4 Altimeter Low Resolution (LR) NTC Reduced Ocean Surface Topography F08
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#GIS #spatial #mapping #earthobservation #remotesensing #fedscience #tonga #HungaTonga #HungaHaApai #eruption #volcanic #volcano #Pacific #marine #geology #engineeringgeology #risk #hazard #satellite #altimetry #data #model #model #spatialanalysis #Tsunami #risk #hazard #monitoring #coast #coastal #naturalhazard #Sentinel #sealevel #warning #earlywarning
@nasa

Satellites Reveal Stunningly Detailed Maps Of Earth's Seafloors
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https://www.livescience.com/planet-earth/rivers-oceans/satellites-reveal-stunningly-detailed-maps-of-earths-seafloors <-- shared technical / media article
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https://swot.jpl.nasa.gov/ <-- SWOT home page
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https://doi.org/10.1126/science.ads4472 <-- shared paper
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#GIS #spatial #mapping #remotesensing #satellite #SWOT #NASA #marine #global #tectonics #geology #underwater #structuralgeology #currents #ocean #oceansurface #gravity #hills #volcanoes #tectonicplates #abyssal #ridges #geology #model #seamounts #continentalmargins #oceancurrents #nutrienttransport #seawater #geologichistory #altimetry #gravimetry #VGG #topography #radaraltimetry #global #seafloor #marine

Our Very Strange Search for ‘Sea Level’
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https://www.newyorker.com/magazine/2024/08/26/our-very-strange-search-for-sea-level <-- shared media/technical article
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#GIS #spatial #mapping #elevation #vertical #geoid #datum #verticaldatum #sealevel #risingsealevel #RSL #climatechange #survey #change #geology #isostaticrebound #glaciation #groundwater #subsidence #remotesensing #GPS #LiDAR #altimetry #change #spatialanalysis #model #modeling #spatiotemporal #sealrock #meansealevel #NGVD29 #NAVD88

Global Seafloor Topography – measured & estimated from gravity data derived from satellite altimetry and shipboard depth soundings. (noaa.gov)
This image is so beautiful, but not yet entirely accurate in detail https://gogeomatics.ca/mapping-the-deep-our-map-of-the-ocean-remains-a-work-in-progress/ #oceanography #seafloor #altimetry #sonar

We have developed a novel #AI based approach for tracking radar #altimetry measurements over ice sheets. This new AWI-ICENet1 retracker reduces the effect of signal penetration and outperforms current retracking methods. Preprint now open for discussion: https://doi.org/10.5194/tc-2023-80

The Sources Of Sea-Level Changes In The Mediterranean Sea Since 1960
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https://doi.org/10.1029/2022JC019061 <-- shared paper
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KEY POINTS:
• The average rate of sea-level rise in the Mediterranean Sea increased from −0.3 mm yr−1 in the period 1960–1989 to 3.6 mm yr−1 in 2000–2018
• Sterodynamic and land-mass changes both have made comparable contributions to the Mediterranean sea-level rise since 2000
• Since 2000, sea level has been rising faster in the Adriatic, Aegean, and Levantine Seas than anywhere else in the Mediterranean Sea…”
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#GIS #spatial #mapping #Mediterranean #climatechange #SLR #sealevelrise #model #modeling #remotesensing #history #change #trends #satellite #altimetry #tideguages #gauges #hydrography #hydrospatial #spatialanalysis #probabilistic #Baysean #glacier #melting

I always enjoy thinking about novel ways to combine #RemoteSensing datasets!

This new paper, led by Clément Soriot, shows that observations made by radiometers (AMSR, SMAP) strongly correlate with high-precision, #Altimetry-derived estimates of #SeaIce thickness in the #Arctic.

This technique could allow us to create a #TimeSeries of daily sea-ice thickness back to the 1980's.

Read the full #OpenAccess paper here:
doi.org/10.1029/2022EA002542