#karst — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #karst, aggregated by home.social.
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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.
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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 -
La Grotta di Serra del Gufo, situata nel Parco del Pollino, nel comune di Cerchiara di Calabria, è un altro ipogeo molto visitato dai corsi introduttivi di speleologia provenienti dalle regioni limitrofe.
La grotta ha uno sviluppo di circa 1,5 km per circa -140 m di profondità ed ha natura ipogenica, costituendo la parte alta di un sistema che in basso presenta la Grotta delle Ninfe - con le sue acque termali - e la meno nota Grotta di Balze di Cristo.
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The Serra del Gufo Cave, located in the Pollino National Park within the municipality of Cerchiara di Calabria, is another cave frequently visited by introductory caving courses from neighboring regions.
The cave spans approximately 1.5 km in length with a depth of around -140 meters and is hypogenic in nature, forming the upper section of a system that includes the Grotta delle Ninfe—with its thermal waters—and the lesser-known Grotta di Balze di Cristo below.
#caves #calabria #serradelgufo #hypogenic #karst #speleology #photography #speleo #caving
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La Grave del Pulo è l'inghiottitoio principale situato nel Pulo di Altamura, un'imponente dolina carsica di diametro 700 m e profondità di circa 70-90 m, nel comune di Altamura (Puglia).
Nota e visitata da tutti gli speleologi pugliesi, è una grotta attrezzata anche per i corsi di introduzione alla speleologia per tutti i gruppi, catastata come PU860.
* https://murgeopark.com/
* https://it.wikipedia.org/wiki/Pulo_di_Altamura===
"La Grave del Pulo" is the main sinkhole located in the Pulo di Altamura, an impressive karst sinkhole with a diameter of 700 m and a depth of about 70–90 m, in the municipality of Altamura (Apulia).
Well-known and visited by Apulian speleologists, it also offers introductory caving courses for all groups and is registered in the regional cave inventory as PU860.
* https://murgeopark.com/
* https://it.wikipedia.org/wiki/Pulo_di_Altamura#caves #altamura #karst #pulodialtamura #geopark #murgeopark #photography #speleo #speleology
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La Grotta della Lupa (o di Ripa Rossa) è un'interessante cavità carsica che si apre all'interno di una vecchia miniera di bauxite presso Roccamorice (PE) nel Parco Nazionale della Majella.. Non si conoscono ingressi naturali e si estende per circa 1.800 metri ad andamento sub-orizzontale e meandriforme per un dislivello di circa 250 metri. La progressione è piuttosto tecnica, con gallerie, piccoli salti e strettoie. L'ambiente interno presenta una grande varietà di speleotemi e ha anche interesse paleontologico per la parte di monte. Esplorata a partire dal 2015, ha una morfologia complessa.
Nel 2022 siamo stati ospiti degli amici dello Speleo Club di Chieti per esplorare questa grotta.
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Grotta della Lupa (or Ripa Rossa) is an interesting karst cave located inside an old bauxite mine near Roccamorice (Pescara) in the Majella National Park. No natural entrances are known, and it extends for about 1,800 meters in a sub-horizontal and meandric pattern, with a depth (elevation difference) of around 250 meters.
Progression is rather technical, featuring tunnels, small pitches, and squeezes. The cave interior displays a wide variety of speleothems and is also of paleontological interest in its upper section. Explored starting in 2015, it has a complex morphology.
In 2022, we were guests of our friends at the Speleo Club Chieti to explore this cave.
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Classification And Conceptualization Of Karst Recharge Processes Through Spectral And Change Point Analysis Of Drip Water Dynamics
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https://doi.org/10.1029/2025WR042816 <-- shared paper
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H/T @ Danyang Sun | UNSW-PhD student
“… [The authors] analysed one year of drip water monitoring data from 46 monitoring sites across six karst regions in southeastern Australia. By integrating fast Fourier analysis, cross-wavelet transform and change point analysis, [they] identified five characteristic recharge behaviours and developed a conceptual framework linking temporal drip dynamics with recharge mechanisms. [They] hope this framework will contribute to a better understanding of recharge heterogeneity in karst systems and support future groundwater research under a changing climate…”
#karst #Australia #water #hydrology #underground #subsurface #recharge #dynamics #spectral #changepoint #cave #dripwater #analysis #spatiotemporal #groundwater #research #climatechange #extremeweather #flow #storage #vadose #epikarst #watertable #aquifer #percolation #rainfall #precipitation #climate #lithology #geology #spatialanalysis -
Three new papers using caves as hydrological observatories
A short post, highlighting three papers published in recent weeks that I have had the fortune of contributing to. All use networks of drip loggers in caves to record water movement from the surface to the water table.
First, led by Akhilesh Kumar at UNSW Sydney, is a satellite remote sensing study. Can we use satellite-derived products, such as rainfall, vegetation characteristics and soil moisture, to understand when recharge events might occur? Using a network of cave drip loggers in SE Australia, the paper ‘Investigating correlative & causal drivers of precipitation-driven groundwater recharge occurrences in southeastern Australia’ gives the answer. Find out more here (Open Access) in the Journal of Hydrology: Regional Studies.
Second, led by Kashif Mahmud and Rowann Remie at Midwestern State University in the USA, uses another network of cave drip loggers, this time distributed throughout Natural Bridge Caves in Texas. The paper, ‘Heterogeneity of karst water movement revealed through cave drip hydrology’, tackles the question of the controls on water movement in karstified limestone. What is more important control on the variability of water movement – depth below surface, geology, or something else? You can read more here (Open Access) in Frontiers in Water.
Third, led by Danyang Sun at UNSW Sydney, uses time series analyses to conceptualise water movement in karstified limestones using a network of drip loggers in SE Australia. Her paper, ‘Classification and Conceptualization of Karst Recharge Processes Through Spectral and Change Point Analysis of Drip Water Dynamics’ is just published in the journal Water Resources Research, and you can read it here (Open Access).
The references:
Sun, D., Baker, A., Andersen, M.S., McDonough, L.K., Shanafield, M.S and Kumar, A., 2026. Classification and Conceptualization of Karst Recharge Processes Through Spectral and Change Point Analysis of Drip Water Dynamics. Water Resources Research, 62, e2025WR042816.
Mahmud, K., Remie, R,, Gary, M., Price, J.D., Katumwehe, A., Vauter, B. and Baker, A., 2026. Heterogeneity of Karst Water Movement Revealed Through Cave Drip Hydrology. Frontiers in Water, 8, 1892078.
Kumar, A., Baker, A., Andersen, M.S., Timms, W., Fisher, A.G. and Sun, D., 2026. Investigating correlative & causal drivers of precipitation-driven groundwater recharge occurrences in southeastern Australia. Journal of Hydrology: Regional Studies 66, 103547
#caves #earthScience #environmentalScience #groundwater #hydrology #karst #research #science -
Yesterday we took advantage of cooler, drier air for the long(ish) drive down to Whitewater State Park, which sits about half way between Rochester and the Mississippi River.
This is a very crinkly bit of landscape, with steep valleys cut through karst limestone (and related geology) on its way to the Mississippi River. It's fun to zoom in on in your computer mapping software of choice with the terrain shading layer turned on. It's a lot more arduous to actually climb up and down those crenelations on footpaths that traverse the side of the slope!
We started down at valley level, then took a quick climb up to the blufftop, before winding around the west side of the park.
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Glaciokarst (Karst 🌍)
Glaciokarst is a geological term that refers to a specific type of karst landscape that has been influenced significantly by past glacial activity. Karst landscapes consist of distinctive surface and subsurface landforms. These landforms are a result of the dissolution of soluble rocks like limestone, gypsum or dolomite by water. In the case of ...
https://en.wikipedia.org/wiki/Glaciokarst
#Glaciokarst #Karst #GlacialLandforms #PleistoceneGeology #GlacialErosionLandforms
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#Jura #IncendieDeForêt
#karst #érosion #éboulements
#EauxSouterraines #pollutionLe 14 juillet, un incendie a détruit près de 12 hectares de forêt dans le secteur pentu et accidenté du belvédère de Montcusel (Jura). Alors que des géologues vont sonder la roche dans ce secteur karstique, comment évaluer les risques d'éboulement ? Et plus largement, quelles sont les conséquences de ces feux de forêt sur nos sols de Franche-Comté ?
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Karagiye (Karst 🌍)
Karagiye is a 40 kilometres -long karst trench close to the Caspian Sea. At its lowest point at Vpadina Kaundy, it is approximately 134 metres below sea level. It is the lowest point in Central Asia, Kazakhstan, and the former Soviet Union. It is also known as the Karagiye Depression and Karagiye Mountain Trench. The trench was formed as ...
https://en.wikipedia.org/wiki/Karagiye
#Karagiye #Karst #LandformsOfAsia #LandformsOfEurope #DesertsOfKazakhstan #DesertsOfCentralAsia
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We are now in County #Claire & have been walking in #TheBurren, an area of extensive #limestone pavement & karstification. I don't have enough superlatives! The scenery, the flora & geology are unique. I have been to many places but few tick even half as many boxes.
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#karst topography creates #mosstodon for #SilentSunday
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WATCH IT HERE:
Watch, like, comment, subscribe (it's free).
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The ornate flying snake (Chrysopelea ornata) – also known as the golden tree snake – glides from tree to tree by flattening its rib cage and twisting through the air like a shimmering ribbon. Its vivid colouring makes it popular among collectors.
Photograph: Phyroum Chourn/Fauna & Flora
#photography
#Cambodia
#caves
#karst
#biodiversity
#NewSpecies
#geckos
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The brown tree frog, also known as the Hong Kong whipping frog, found in the Phnom Prampi cave in Battambang province, a designated natural heritage site. The frog gets its name from the way the female uses her back legs to whip up foam before making a nest for her eggs.
Photograph: Phyroum Chourn/Fauna & Flora
#photography
#Cambodia
#caves
#karst
#biodiversity
#NewSpecies
#geckos
#frogs -
A reticulated python in Phnom Preak, Battambang province. This python species, native to south and south-east Asia, is the world’s longest snake with many specimens measuring in excess of seven metres.
Photograph: Phyroum Chourn/Fauna & Flora
#photography
#Cambodia
#caves
#karst
#biodiversity
#NewSpecies
#geckos
#snakes
