Kathy BrysonWhen maintenance is not an upgrade!
Surf's down! #Munich, until now an inland #surfing hotspot, has lost its biggest #wave https://www.npr.org/2025/11/20/g-s1-98250/germany-munich-surfing-eisbach-eisbachwelle-e1-wave
π§π Greg CocksInferring River Discharge From Google Earth Images - Critical Flow Theory Can Predict River Discharge Based On The Spacing Of Standing Waves Captured By Google Earth Images
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https://eos.org/editor-highlights/inferring-river-discharge-from-google-earth-images <-- shared technical article
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https://doi.org/10.1029/2025GL114851 <-- shared paper
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ββ¦ KEY POINTS:
β’ Standing waves in rivers indicate unique hydraulic conditions that allow depth and velocity to be inferred from the spacing of the waves
β’ Critical flow theory can be used to calculate discharge based on measurements of wavelength and width made using readily available images
β’ Discharges estimated via the critical flow approach for 82 images agreed closely with discharges recorded at gaging stations (RΒ² = 0.98)β¦β
#GIS #spatial #mapping #spatialanalysis #remotesensing #GoogleEarth #CriticalFlowTheory #riverdischarge #standingwaves #gages #gauges #earthobservation #flow #volume #hydraulicjumps #velocity #depth #water #hydrography #hydrology #wavelength #channelwidth #discharge #estimation
--
https://eos.org/editor-highlights/inferring-river-discharge-from-google-earth-images <-- shared technical article
--
https://doi.org/10.1029/2025GL114851 <-- shared paper
--
ββ¦ KEY POINTS:
β’ Standing waves in rivers indicate unique hydraulic conditions that allow depth and velocity to be inferred from the spacing of the waves
β’ Critical flow theory can be used to calculate discharge based on measurements of wavelength and width made using readily available images
β’ Discharges estimated via the critical flow approach for 82 images agreed closely with discharges recorded at gaging stations (RΒ² = 0.98)β¦β
#GIS #spatial #mapping #spatialanalysis #remotesensing #GoogleEarth #CriticalFlowTheory #riverdischarge #standingwaves #gages #gauges #earthobservation #flow #volume #hydraulicjumps #velocity #depth #water #hydrography #hydrology #wavelength #channelwidth #discharge #estimation
