#erosion — Public Fediverse posts

Popular beach predicted to shrink by 12 metres as tides rise
By Caroline Horn

Horseshoe Bay in South Australia is under threat from erosion amid predictions it will shrink significantly by 2050 if action is not taken.

https://www.abc.net.au/news/2026-08-30/horsehoe-bay-erosion-to-shrink-port-elliot-beach-sa/106995272

#Erosion #RegionalCommunities #ClimateChange #LocalGovernment #RegionalDevelopmentandPlanning #CarolineHorn

Gli scallops in grotta sono forme di erosione meccanica derivanti dall'azione delle correnti d'acqua sulle pareti che vengono dilavate, di dimensioni variabili da qualche centimetro a decine di centimetri.

Questo è un particolare da qualche parte nell'Antro del Corchia, anno 2017, uno dei maggiori sistemi carsici italiani, un esempio di carsismo nel marmo.

===

Cave scallops are mechanical erosion features resulting from the action of water currents flowing over and dissolving rock walls, ranging in size from a few centimeters to tens of centimeters.

This detail is from somewhere inside the Antro del Corchia (2017), one of the largest Italian karst systems and a notable example of marble karstification.

#caves #speleology #erosion #corchia
#speleology #photography #scallops #karst

‘This can’t be correct’ – how scientists formed a new #theory around #Arctic #erosion

https://www.eurekalert.org/news-releases/1141121

A great example of #CitizenScience in this collection of videos that document the effects of 🌊 #Erosion along the East #Yorkshire coast.

https://www.youtube.com/watch?v=_HpzxmR0-ec&list=PLRaqAyHvqqX4dZKYEQ4NA11jkUyVOPw_c

#ichfassezusammen: Eine #Billion? #META pleite und eine bessere Welt? – Russen leeren Bankkonten wegen #Putins klamme Kriegskasse – Amerikaner zerstören „license-plate cameras“ – Promis zu Wahlen in SA? Wirkungslos? – 8 Nicht-EU-Staaten übernehmen #EU-Saktionen gegen #Belarus – #Frankreich: 70% Landfläche versiegelt oder von #Erosion betroffen – #Japan: Taifun Nr.: 18 im Anmarsch – Seit #Hamas-Angriff: #Antisemitismus weltweit koordiniert – Die #noafd ist in der Mitte der Gesellschaft angekommen

Eventually the riverbed stabilizes into a new landscape and the intern builds houses and plants trees along the banks.
#science #hydrology #erosion #SciComm

The stream table is an old favorite at the county Fair. All the employees love it because they get to play like little kids. And little kids love it because sandbox!
(Technically it's not sand, it's micro plastics. Hey at least it's not in the soil I guess. The different colored particles have different weight/density.)
#science #erosion #hydrology #SciComm

Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California
--
https://doi.org/10.1029/2026EA005227 <-- shared paper
--
H/T @amy East, Ph.D., P.G. | Researcher integrating geoscience and climate-change preparedness
“[This paper (link above) is] a collaboration with [the H/T’s] colleagues from [the] USGS Landslide Hazards Program, who mapped over 8,900 landslides in the eastern San Francisco Bay Area during an extreme wet winter.
How much sediment does such an extreme winter produce, from landslides or in stream discharge? How does that compare with long-term sediment production and landscape denudation rates?
[They] f[o]nd that landslide sediment mobilization is comparable to long-term denudation rates, emphasizing the role of extreme events in long-term sediment production. However, one extreme wet year has a negligible effect toward counteracting ongoing problems of sediment deficit in San Francisco Bay: to keep pace with sea-level rise, extreme wet conditions would need to occur in 50 out of the next 75 years…”
--
"PLAIN LANGUAGE SUMMARY: Watersheds will likely produce more sediment in a warmer future with more extreme rain, primarily through landslides in steep terrain. This study examines how an extremely wet season affected sediment production and transport in the eastern San Francisco Bay area, California. By mapping and measuring 8,928 landslides, [they] found that rare, extreme rain conditions are likely responsible for the vast majority of long-term hillslope erosion rates in this region. However, due to long residence times for sediment on hillslopes and in stream channels, a maximum of 1%–2% of that newly mobilized landslide material could have potentially contributed to sediment carried by streams into the Bay that year. Even extremely wet years cannot provide enough sediment for Bay wetlands and shorelines to keep pace with rising sea levels. To meet the demand for sediment in the Bay, such extreme rain and sediment production would need to occur in most years, which is not realistic. To restore wetlands and protect shorelines, managers likely will need to supplement the coastal system with repurposed dredged material…”
#massmovement #soil #water #hydrology #hydrography #geology #soils #geomorphometry #hydrogeomorphology #geomorphology #landslide #masswasting #climatechange #extremeweather #precipitation #rainfall #weather #climate #mapping #engineeringgeology #mapping #SanFrancisco #BayArea #USA #California #fedscience #fedservice #oublicgood #sediment #stream #discharge #extremewinter #sealevelrise #SLR #hillslope #erosion #sedimentation #tidal #wetlands #coast #coastline #shoreline #GIS #spatial #spatialanalysis #spatiotemporal #watershed
#USGS | #USGSLandslideHazardsProgram

#datocurioso

¿Sabías que la arena de la playa son restos de montañas destruidas que viajaron durante miles de años?

Cada grano que tocas en la costa es el resultado de un largo proceso geológico de desgaste que comenzó muy lejos del océano. El viento, la lluvia y el hielo rompen lentamente las grandes rocas de las montañas altas, desprendiendo pedazos pequeños que los ríos arrastran colina abajo hacia el mar. Durante ese viaje de cientos de kilómetros, los fragmentos minerales chocan entre sí, se parten y se pulen hasta convertirse en diminutas partículas duras que miden entre 65 micras y 2 milímetros de ancho. El componente más común en las costas del mundo es el cuarzo, un mineral derivado del granito que resiste el agua sin disolverse, lo que le da a la mayoría de las playas su clásico color amarillo claro. Sin embargo, la geología local cambia la receta en cada región; por ejemplo, las arenas de las islas volcánicas se forman por la descomposición de lava negra, mientras que las playas blancas de las zonas tropicales provienen de la acumulación de conchas pulverizadas, arrecifes de coral destruidos por las olas e incluso de los residuos digestivos del pez loro.

— Aetherius Eldritch, Periodista, Locutor, podcaster y bloger del fediverso.

#Arena #Geología #Playas #Erosión #Minerales #Ciencia

WA town sliding into ocean gets funding for temporary sea wall
By Eliza Bidstrup and Nadia Mitsopoulos

Local business owners welcome a WA government investment towards a temporary rock wall aimed to slow down coastal erosion, but critics say it is not enough.

https://www.abc.net.au/news/2026-08-12/lancelin-erosion-seawall-state-government-funding/107027526

#Erosion #DisasterandEmergencyResponse #UrbanDevelopmentandPlanning #EnvironmentalManagement #EnvironmentalImpacts #LocalGovernment #ElizaBidstrup #NadiaMitsopoulos

Any #geography nerds on Fedi? I was doing some #GameDev research, and noticed the weirdly parallel lakes west of the marker for Ikryaninskiy rayon: https://wego.here.com/p/here%3Acm%3Anamedplace%3A23487107?map=45.80004%2C47.58137%2C9.44

Is that from erosion? Glaciation during the last Ice Age? Baba Yaga? 🤔

#erosion #glacier #glaciation #BabaYaga #weird

Engineer says 50 years of erosion research ignored by government and courts

"I've come to the conclusion, after 50 years, that there's very little other option than for the Australian government, Australia-wide, to just simply say, 'You can enjoy the coast while it's there, but property owners cannot protect their property.' End of story," Mr Gordon said."

"The Byron and Tweed Shire councils were urged to control development within 1 kilometre of the shoreline, and stipulate landholders who disregarded the policy did so "at their own risk".

The paper 'Beach law in the anthropocene' "reviewed legal systems around the world and found private property rights trumped public interest...Our common law tradition assumes coastlines are stable and coastal property boundaries can be fixed...But as the effects of climate change become more dramatic, those assumptions no longer hold."

"Professor Smith said it was time for tough discussions about a transition strategy.
"We really need to think about what sort of future we want for the coastal zone, and we need to resolve who bears the ultimate rights and responsibilities for these lands — whether we are going to preference private property rights over public rights, whether we're going to preference people's rights over nature's rights," he said."
>>
https://www.abc.net.au/news/2026-08-05/beach-erosion-expert-claims-research-ignored/106746240
#erosion #coast #NSW #PrivateProperty #rights #FossilFuels #science #climatefiasco #roads #PublicInterest #CompulsoryAcquisition #governance #law

Engineer says 50 years of erosion research being ignored
By Cath Adams

A co-author of the first NSW Coastal Protection Act says 50 years of research is being undermined by courts allowing people to protect their own properties at select locations.

https://www.abc.net.au/news/2026-08-05/beach-erosion-expert-claims-research-ignored/106746240

#Erosion #EnvironmentalPolicy #CathAdams

👻 #Mythos zum #Frühstück: 😱

„#Rotorblätter von #Windrädern haben fast 1400 Tonnen Abrieb pro Jahr“.

#Rotorblätter unterliegen einer gewissen #Erosion. Sie verlieren kleine Partikel, zu denen auch #Mikroplastik zählt. Wie hoch ist der tatsächliche jährliche Abrieb und welche Studiendaten liegen dazu vor?

https://www.oekologisch-unterwegs.de/energiewende/1160-fakten-statt-furcht-mythen-der-windenergie-gegner-entlarvt.html#Abrieb

#Windenergie #Umweltschutz #Kunststoffe #Faktencheck

Put them on, take them off: how Trump's sanctions lost their scare value

Follow us and never miss a story.

https://1ban.news/trump-sanctions-credibility-erosion/

#1ban #trump #sanctions #credibility #erosion #geopolitics

Sand Castle

Damned be anything 
that rises up out of this sand,
where the sea licks and leaves its froth,
the waves like fingers in their ceaseless clawing,
betrayed by the white whisper of the surf,
that eternal purging to loosen 
the smallest grains in relentless toil,
until all the walls crumble and the tower sways,
then falls like a slithering serpent that slides
wounded and torn beneath the emerald sea.

October 26, 1988
Puerto Viejo, Costa Rica

Part of the continuing Respectful American series, a selection of writings from my travel journals from Central America in 1988