#lithology — Public Fediverse posts

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

When Heavy Rain Meets #Glacial Landscapes – Record-Breaking #Flooding in #WashingtonState [USA]…
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https://www.linkedin.com/posts/geological-society-of-america_geohazards-flooding-landslides-ugcPost-7405031818007187457-wuwy <-- shared GSA LinkedIn post
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https://doi.org/10.1130/G39691.1 <-- shared paper
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https://komonews.com/news/local/landslide-risk-western-washington-severe-flooding-heavy-rain-continues-for-dirt-soil-sediment-weather-forecast-winter-storm-pacific-northwest <-- shared media article
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https://youtu.be/1yB34LibGo8?si=Z_Ug5gd3xLhvZGym <-- shared media video
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#geohazards #Landslides #Geology #landslide #severeweather #landslides #landsliderisk #weather #westernwashington #washingtonflooding #flooding #winterconditions #storm #pnw #meteorology #science #massmovement #flood #extremeweather #fluvial #pluvial #rainfall #atmosphericriver #engineeringgeology #risk #hazard #mitigation #forecasting #riskmanagement #damage #infrastructure #cost #economics #publicsafety #PNW #PacificNorthwest #water #hydrology #glacial #sediment #sedimentology #stratigraphy #GIS #spatial #mapping #remotesensing #spatialanalysis #elevation #slopestability #froundwater #hydrology #model #flow #modeling #outwash #till #clay #watertable #lithology #landscape #geomorphology #geometry #USA

Result of a Principal Component Analysis (PCA) created from combined median composites of Sentinel-1 and Sentinel-2 imagery — somewhere in the Sudanese desert.

This PCA composite brings out contrasts between lithologies, structural domains, drainage patterns, and surface materials, highlighting features that are nearly invisible in standard RGB representations.

And yes — it also happens to look stunning.

#RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #SAR #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt #Sudan #Copernicus #CopernicusSentinel

Exploring large-scale landscape structures with a simple Principal Component Analysis (PCA) applied to a MODIS composite.

The PCA reveals striking contrasts in surface materials, vegetation patterns, and terrain transitions across western Canada — from the Rocky Mountains into the prairies and the Canadian Shield.
Even with moderate-resolution MODIS data, spectral variability produces a surprisingly rich view of regional geography and geomorphology.

#RemoteSensing #EarthObservation #Geology #PCA #MODIS #OpenData #GIS #QGIS #Geomorphology #Geoscience #RStats #Lithology #GeoDataArt #GeoSpectralArt #BorealForest #Taiga #Canada #Alberta

Result of a Principal Component Analysis (PCA) based on combined median composites of Sentinel-1 and Sentinel-2 satellite imagery — somewhere in the desert of Sudan.

The PCA highlights contrasts between different lithologies, structural domains, and surface materials, revealing subtle geological features that are hard to distinguish in standard RGB composites.

And yes — it also looks simply beautiful.

#RemoteSensing #EarthObservation #Geology #PCA #Sentinel1 #Sentinel2 #Radar #OpenData #GIS #QGIS #Geomorphology #Geoscience #SAR #SAGAGIS #RStats #Desert #Lithology #GeoDataArt #GeoSpectralArt

Controls On Longitudinal Stream Profile Evolution In Guadalupe Mountains National Park
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https://doi.org/10.1080/24694452.2025.2511941 <-- shared paper
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#GIS #spatial #mapping #FlintsLaw #GuadalupeMountainsNationalPark #longitudinal #streamprofile #rockstrength #SchmidtHammer #engineeringgeology #geology #GuadalupeMountains #NationalPark #water #hydrology #hydrography #erosion #boundaryconditions #spatialanalysis #remotesensing #climate #geomorphometry #geomorphology #lithology #rock #bedrock #incision #river #profile #testing #climatechange #surfaceprocesses #statistics #geostatistics #concanity #steepness #knickpoints #corrleation #model #modeling #NewMexico

Multispectral Remote Sensing Expression of Lineaments and Alteration Minerals in Part of Crystalline Rock Units of Southwestern Nigeria - Implication on Gold Prospecting
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https://doi.org/10.1016/j.oreoa.2025.100091 <-- shared paper
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#GIS #spatial #mapping #ASTER #Gold #Hydrothermal #HydrothermalAlteration #Lineament #Landsat #ETM #EnhancedThematicMapper #phyllic #Ilesha #schist #belt #geology #mining #Nigeria #naturalresources #mineral #mineralresources #golddeposits #aerogeophysical #remotesensing #geophysical #spatialanalysis #geomorphology #geomorphometry #alteration #propylitic #argillic #mineralogy #XRD #structuralgeology #lithology #PrincipalComponentAnalysis #PCA #prospecting #fracture #joints #faulting #Multispectral #Lineaments #Crystalline