#sealevel — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #sealevel, aggregated by home.social.
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Coastal Flooding At Predictable Hours
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https://doi.org/10.1038/s41467-026-75710-5 <-- shared paper
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H/T @bruna Alves | Nature Communications | Editor
“When do coastal floods happen? ⏱️🌊
A new study [link above] shows that, in many tide-dominated coastal regions, flooding tends to occur at specific and recurring times of day. Rather than being completely random, flood events often cluster around predictable hours driven by local tidal patterns.
By analysing coastal flood observations from the UK and the US, [the authors] show[ed] that the timing of flood events can be highly structured, with some locations experiencing floods disproportionately during certain parts of the day.
This adds a temporal dimension to coastal flood risk. We often focus on how frequently floods occur, how severe they are, and where they happen. This study highlights that when they occur may also matter, particularly as rising sea levels increase the frequency of coastal flooding.
The findings provide a useful perspective for coastal adaptation, risk communication, and emergency planning…”
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“Flooding is typically perceived as a sudden and unpredictable hazard. Here, [they] show that recurrent flooding can occur at highly predictable times in tidally dominated coastal systems. This predictability stems from phase-locking of tidal constituents and constituent pairs with the solar day, causing peak tides to recur at consistent local times set by regional tidal propagation. Using tide-gauge records from the United States and the United Kingdom, [they] quantif[ied] the intraday timing of coastal flood events and show strong clustering at specific hours, particularly where semidiurnal or mixed tides dominate. For example, floods in Boston cluster around noon and midnight, whereas in southern California they occur in the morning. Sites with stronger non-tidal variability show weaker clustering. This temporal predictability extends beyond nuisance flooding to larger consequential events involving inundation, road closures and infrastructural damage, highlighting opportunities for anticipatory risk communication, emergency planning and time-sensitive coastal adaptation…”
#coast #coastal #flood #flooding #spatialanalysis #spatiotemporal #time #statistics #geostatistics #tide #tidal #timing #temporal #floodrisk #risk #hazard #sealevel #sealevelrise #climatechange #emergency #planning #tideguage #UK #USA #innundation #infrastructure #transportation #riskcommunication -
From Fragmentation To Integration - A Review Of Data–Model Integration In Land Subsidence Research
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https://doi.org/10.1016/j.ancene.2026.100567 <-- shared paper
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H/T @manonzero current drought conditions, increasing pressure on ecosystems, and ongoing climate adaptation challenges, land subsidence is receiving growing attention worldwide.
For anyone wanting to learn more about land subsidence, or get a refresher, [the authors] provide an overview of the processes involved, the ways it can be measured or estimated, the models used to simulate it, and how observations and models can be combined, [their] new [#openaccess] review paper [link above] may be of interest!
A central message of the paper is that understanding and managing land subsidence requires bringing these different sources of information together…”
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“HIGHLIGHTS:
• Presents a comprehensive synthesis that unifies all major elements of integral land-subsidence research.
• Defines the methodological steps needed for full integration and positions them within the broader challenges posed by subsidence.
• Brings together and distills the key components of data, modelling, and integration into a coherent framework.
ABSTRACT: Land subsidence, the sinking of the Earth’s surface, is a multi-faceted hazard driven by both natural and anthropogenic factors, and poses significant risk to environments, ecosystems, and society. Despite decades of growing research output, substantial gaps persist between investigations on the diversity of causes, reflected in data and model insufficiency. These gaps hinder the understanding of the issue and impede the effectiveness of mitigation measures. Many studies have urged to include all identified subsidence processes acting in a single area in an integral framework, for which a complex analysis has not systematically been outlined before. Therefore, [they] focus here on bridging the gaps between various technical research disciplines involved. [They] stress the urgency for an integral approach that combines observations with subsurface information of all known subsidence processes in an area, and [they] appeal for utilizing them in physics-guided data integrations. Only then can all subsidence drivers be understood, and effective mitigation measures designed. [They] outline the elements for an integral approach in categorical tables and schematized figures, and [they] discuss the main opportunities and challenges in a stepwise workflow. Leveraging these opportunities naturally leads to more robust, scalable, and policy-relevant solutions and fosters a more sustainable future…”
#Land #subsidence #processes #Verticallandmotion #SLR #sealevel #sealevelrise #relativesealevelrise #modeling #data #model #InSAR #elevation #holistic #GIS #spatial #mapping #climate #drought #extremeweather #climatechange #climateadaption #ecosystems #measurement #monitoring #research #review #framework #overview #risk #hazard #anthropogenic #mitigation #engineering #water #hydrology #policy #planning #design #remotesensing #spatialanalysis #spatiotemporal -
Quantifying UK Coastal Flood Exposure Under Future Sea-Level Rise To [2100 and] 2300
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https://doi.org/10.1038/s41467-026-74982-1 <-- shared paper
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https://www.theguardian.com/environment/2026/jul/21/millions-long-term-coastal-flooding-risk-uk-climate-action <-- shared media article
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H/T @University of Bristol School of Geographical Sciences
“🌊 New research on long-term coastal flooding as a result of climate inaction 🌊
… The researchers found:
🔷 By 2100 at least an additional 0.5 million people exposed to the 1-in-200 year undefended flood extent - a 25% increase compared to present day.
🔷 Under the most pessimistic storyline by 2300 involving significant ice-sheet instability, an additional 13 million people could be exposed to the 1-in-200 year undefended flood event.
🔷 Under some scenarios there is a need for large-scale movement of populations and settlements away from the coast in the coming centuries…”
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“Up to 13 million people in the UK face the long-term risk of coastal flooding due to the climate crisis, scientists have warned, with a ‘reasonable worst-case scenario’ suggesting the need for the large-scale movement of populations away from a dramatically reshaped coast…
Sea level has risen by about 20cm around the UK in the last century and is accelerating. A further 40cm to 60cm by 2100 is already baked in, meaning about half a million more people will be at risk of their homes being flooded, on top of the 2.5 million already in danger near the coasts. Lincolnshire and the Humber estuary are most in danger…”
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“The latest Intergovernmental Panel on Climate Change assessment report highlighted the potential for more than 15 metres of global sea-level rise by 2300. In this study, [the authors] explore the implications for UK coastal flood exposure by combining national-scale flood modelling with physically-based storylines of UK sea-level rise. By 2100 all storylines show broadly similar results with at least an additional ½ million people exposed to the 1-in-200 year undefended flood extent, which represents a 25% increase compared to present day. Under the most pessimistic storyline by 2300 involving significant ice-sheet instability, an additional 13 million people could be exposed to the 1-in-200 year undefended flood event. This would imply the potential need for large-scale movement of populations and settlements away from the coast in the coming centuries. Given current global emissions pledges, exposure increases by 1.7 million people by 2300, however up to 1 million could be avoided if Paris Agreement targets for greenhouse gas emissions are met…”
#coast #coastal #innundation #climatechange #global #sealevel #sealevelrise #SLR #flood #flooding #climatechange #population #infrastructure #UK #England #Scotland #Wales #NorthernIreland #Lincolnshire #Humber #estuary #settlement #city #urban #mitigation #planning #policy #infrastructure #risk #hazard #humanimpacts #spatialanalysis #spatiotemporal #GIS #spatial #mapping #coastalflooding #climatecrisis #model #modeling #elevation #DEM -
10) In a devastating climate milestone, Svalbard lost 1% of its total glacial ice during a single record-shattering heatwave in 2024. The Norwegian archipelago is warming faster than nearly anywhere on Earth. Scientists warn these extreme melt events are accelerating, with alarming consequences for global sea levels and fragile Arctic ecosystems.
#Svalbard #ClimateChange #GlacialMelt #Heatwave #ArcticWarming #SeaLevel #Norway #ClimateEmergency #Rorshok #ArcticUpdate
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10) In a devastating climate milestone, Svalbard lost 1% of its total glacial ice during a single record-shattering heatwave in 2024. The Norwegian archipelago is warming faster than nearly anywhere on Earth. Scientists warn these extreme melt events are accelerating, with alarming consequences for global sea levels and fragile Arctic ecosystems.
#Svalbard #ClimateChange #GlacialMelt #Heatwave #ArcticWarming #SeaLevel #Norway #ClimateEmergency #Rorshok #ArcticUpdate
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10) In a devastating climate milestone, Svalbard lost 1% of its total glacial ice during a single record-shattering heatwave in 2024. The Norwegian archipelago is warming faster than nearly anywhere on Earth. Scientists warn these extreme melt events are accelerating, with alarming consequences for global sea levels and fragile Arctic ecosystems.
#Svalbard #ClimateChange #GlacialMelt #Heatwave #ArcticWarming #SeaLevel #Norway #ClimateEmergency #Rorshok #ArcticUpdate
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10) In a devastating climate milestone, Svalbard lost 1% of its total glacial ice during a single record-shattering heatwave in 2024. The Norwegian archipelago is warming faster than nearly anywhere on Earth. Scientists warn these extreme melt events are accelerating, with alarming consequences for global sea levels and fragile Arctic ecosystems.
#Svalbard #ClimateChange #GlacialMelt #Heatwave #ArcticWarming #SeaLevel #Norway #ClimateEmergency #Rorshok #ArcticUpdate
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Global Subsidence Of River Deltas
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https://doi.org/10.1038/s41586-025-09928-6 <-- shared paper
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H/T Wageningen University & Research
“🌊🔍 River deltas are sinking!
A new study [link above] reveals that river deltas worldwide are sinking significantly, faster than sea levels rise..."
#GIS #mapping #spatial #remotesensing #NASA #earthobservation #RiverDelta #ClimateChange #spatialanalysis #spatiotemporal #water #hydrology #marine #river #delta #coast #coastal #global #subsidence #groundwater #extraction #pumping #overpumping #watertable #hydrogeology #sediment #waterresources #planning #policy #landuse #landscape #hydrogeomorphology #worldwide #riverdelta #humanimpacts #ecosystems #sealevel #sealevelrise #SLR #flood #flooding #landloss #salinity #risk #hazard #salinization #vulnerable #measurements #monitoring #elevation #insar #radar #surfaceelevation #anthropogenic #urbanexpansion -
Antarctic Meltwater Alters Future Projections Of Climate And Sea Level
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https://doi.org/10.1038/s41467-025-64438-3 <-- shared paper
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https://doi.org/10.7275/6t64-wy56 <-- shared link to scripts for running the models and creating the figures in this data repository
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#GIS #spatial #mapping #model #modeling #sealevel #sealevelerise #meltwater #Antarctic #projection #forecast #global #climatechange #icesheet #massloss #refinement #meansealevel #SouthernOcean #fluvial #pluvia; #precipitation #overturningcirculation #heattransport #temperature #Pacific #Atlantic #ocean #marine #spatialanalysis #spatiotemporal -
Revolutionary Submarine [Maps] Ice Shelf Mysteries, Then Disappears Without A Trace
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https://scitechdaily.com/revolutionary-submarine-discovers-ice-shelf-mysteries-then-disappears-without-a-trace/ <-- shared technical article
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https://doi.org/10.1126/sciadv.adn9188 <-- shared paper
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#GIS #spatial #mapping #remotesensing #ROV #submersible #underwater #marine #submarine #Antarctica #glacier #iceshelf #dotson #survey #ice #subsurface #cryosphere #model #modeling #Ran #WestAntarctica #melt #melting #climatechange #warming #sealevel #sealevelrise #SLR #sonar #bathymetry #currents #model #modeling #age #dating #morphology #geomorphometry -
“If you only looked at the grounded ice change, you’d actually be underestimating the effect of the freshwater addition by about HALF. So, understanding & keeping track of the floating ice bit is important for those direct effects & then also those small #SeaLevel effects.”
These factors should be included in the discussion of sea level, he said, & he hopes new #climate models will reflect the details of #ocean-#IceShelf interactions, particularly in #Antarctica. -
Martin Ekman gave the first #GIAschool2023 lecture on The History of Land Uplift Research, drawing from his book The Changing Level of the Baltic Sea during 300 Years: A Clue to Understanding the Earth. This and other Historical Geophysics books here: https://historicalgeophysics.ax
#sciencehistory #GIA #icesheets #sealevel #geophysics #iceage
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It really does seem as though they've just written off large portions of humanity (almost none of whom are white), and are betting that they can bullshit their way through hundreds of millions of deaths, and keep their power the whole time.
#ClimateChange #GlobalWarming #AOSIS #SeaLevelRise #SeaLevel #Paris