#brahmaputra — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #brahmaputra, aggregated by home.social.
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Compound Hydrogeomorphic Cascades And Rapid Upstream To Downstream Hazard Coupling In The Eastern Himalaya
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https://doi.org/10.1038/s41598-026-52915-8 <-- shared paper
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https://doi.org/10.1007/s11600-022-00943-z <-- shared paper
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H/T @Kuldeep Dutta | Geology-Earth Science
“… In hilly regions transitioning rapidly to low gradient alluvial plains, localized hydrometeorological triggers can instantly scale into devastating basin wide disasters. This study dissects the September 2020 cascading hazard in parts of the Arunachal Pradesh-Assam corridor to quantify the rapid coupling between upstream hillslopes and downstream floodplains.
Check out the [attached graphical abstract figure] for an integrated visual workflow of the entire disaster continuum from hillslope failure to floodplain transformation...”
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“Extreme precipitation in the Eastern Himalaya is increasingly associated with coupled hillslope-floodplain hazards. This study examines the 17th-18th September 2020 rainfall event in Arunachal Pradesh initiating landslides and its downstream impacts in Assam, India, using multi-sensor satellite data and long-term rainfall records. Sentinel-2 imagery was used to map landslides and debris flows, Sentinel-1 SAR data to delineate flood extent, and IMD gridded rainfall (1996–2020) to analyse rainfall spell characteristics. The event triggered widespread slope failures, localized landslide damming, and a subsequent breach, generating sediment-laden flows that inundated ~ 100 km² of the Dhemaji floodplain. A backscatter-derived Relative Flood Volume Index (RFVI) indicates spatial variability in inundation intensity, although it does not represent absolute flood volume. Rainfall analysis suggests that antecedent wetness from preceding spells preconditioned slopes, while peak daily rainfall (> 170 mm day−1) initiated landsliding. Power-law scaling shows negligible dependence of intensity on duration (R2 ≈ 0.0004), whereas cumulative rainfall exhibits a stronger relationship with duration (R2 ≈ 0.54). These results indicate distinct roles of rainfall intensity and accumulation in controlling landslide initiation and downstream flooding, respectively, highlighting the importance of compound rainfall forcing in rapid hydrogeomorphic cascades…”
#EarthScience #RemoteSensing #Himalayas #NaturalHazards #ClimateChange #ScientificReports #GeospatialAnalysis #DisasterMitigation #Landslide #trigger #Flooding #massmovement #extremeweather #engineeringgeology #floodplain #innundation #hillslope #fluvial #pluvial #alluvial #sediment #sedimentation #hydrometeorology #ArunachalPradesh #Assam #India #Brahmaputra #risk #hazard #geology #engineeringgeology #remotesensing #earthobservation #spatialanalysis #spatiotemporal #disaster #hydrogeomorphology #workflow -
Compound Hydrogeomorphic Cascades And Rapid Upstream To Downstream Hazard Coupling In The Eastern Himalaya
--
https://doi.org/10.1038/s41598-026-52915-8 <-- shared paper
--
https://doi.org/10.1007/s11600-022-00943-z <-- shared paper
--
H/T @Kuldeep Dutta | Geology-Earth Science
“… In hilly regions transitioning rapidly to low gradient alluvial plains, localized hydrometeorological triggers can instantly scale into devastating basin wide disasters. This study dissects the September 2020 cascading hazard in parts of the Arunachal Pradesh-Assam corridor to quantify the rapid coupling between upstream hillslopes and downstream floodplains.
Check out the [attached graphical abstract figure] for an integrated visual workflow of the entire disaster continuum from hillslope failure to floodplain transformation...”
--
“Extreme precipitation in the Eastern Himalaya is increasingly associated with coupled hillslope-floodplain hazards. This study examines the 17th-18th September 2020 rainfall event in Arunachal Pradesh initiating landslides and its downstream impacts in Assam, India, using multi-sensor satellite data and long-term rainfall records. Sentinel-2 imagery was used to map landslides and debris flows, Sentinel-1 SAR data to delineate flood extent, and IMD gridded rainfall (1996–2020) to analyse rainfall spell characteristics. The event triggered widespread slope failures, localized landslide damming, and a subsequent breach, generating sediment-laden flows that inundated ~ 100 km² of the Dhemaji floodplain. A backscatter-derived Relative Flood Volume Index (RFVI) indicates spatial variability in inundation intensity, although it does not represent absolute flood volume. Rainfall analysis suggests that antecedent wetness from preceding spells preconditioned slopes, while peak daily rainfall (> 170 mm day−1) initiated landsliding. Power-law scaling shows negligible dependence of intensity on duration (R2 ≈ 0.0004), whereas cumulative rainfall exhibits a stronger relationship with duration (R2 ≈ 0.54). These results indicate distinct roles of rainfall intensity and accumulation in controlling landslide initiation and downstream flooding, respectively, highlighting the importance of compound rainfall forcing in rapid hydrogeomorphic cascades…”
#EarthScience #RemoteSensing #Himalayas #NaturalHazards #ClimateChange #ScientificReports #GeospatialAnalysis #DisasterMitigation #Landslide #trigger #Flooding #massmovement #extremeweather #engineeringgeology #floodplain #innundation #hillslope #fluvial #pluvial #alluvial #sediment #sedimentation #hydrometeorology #ArunachalPradesh #Assam #India #Brahmaputra #risk #hazard #geology #engineeringgeology #remotesensing #earthobservation #spatialanalysis #spatiotemporal #disaster #hydrogeomorphology #workflow -
A dangerous dam‑building race is threatening South Asia’s shared rivers
#Bangladesh #China #India #SouthAsia #WaterCrisis #Environment #Dams #Hydropower #Brahmaputra #Ganges #PadmaBarrage #WaterSecurity #Geopolitics #Rivers #Sundarbans #GlobalSouth
https://the-14.com/a-dangerous-dam-building-race-is-threatening-south-asias-shared-rivers/ -
A dangerous dam‑building race is threatening South Asia’s shared rivers
#Bangladesh #China #India #SouthAsia #WaterCrisis #Environment #Dams #Hydropower #Brahmaputra #Ganges #PadmaBarrage #WaterSecurity #Geopolitics #Rivers #Sundarbans #GlobalSouth
https://the-14.com/a-dangerous-dam-building-race-is-threatening-south-asias-shared-rivers/ -
Residents of Majuli have renewed their demand for UNESCO World Heritage status as Assam Assembly elections draw closer. https://english.mathrubhumi.com/multimedia/videos/assam-assembly-election-2026-majuli-unesco-world-heritage-status-d9e03hzw?utm_source=dlvr.it&utm_medium=mastodon #Majuli #UNESCOWorldHeritage #Assam #Brahmaputra #CulturalHeritage
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Passenger boat capsizes on Brahmaputra River in Assam, 7 feared missing. Rescue ops on. Reports of no safety gear. Get crucial updates on this river tragedy. https://english.mathrubhumi.com/news/india/brahmaputra-boat-capsize-assam-j4d8beta?utm_source=dlvr.it&utm_medium=mastodon #Brahmaputra #Assam #BoatAccident #Capsize #Missing
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Urban regeneration: Brahmaputra riverfront, Guwahati, India 🌉
The design improves mobility, provides recreational opportunities and creates breathable spaces in a densely populated neighbourhood.👉 Discover MORE and SUBSCRIBE to our summary of news and updates through link: https://amusementlogic.com/general-news/urban-regeneration-brahmaputra-riverfront-guwahati-india/
#urbanregeneration #brahmaputra #india #architecture #design #construction #tourism #régénérationurbaine #inde #tourisme #regeneraciónurbana #arquitectura #diseño #construcción #turismo
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Future Of 1 Billion People In South Asia Hinges On #Water Pact
"Better collaboration is urgently needed to mitigate the impacts of #ClimateChange on three key river basins in South Asia – the #Brahmaputra, #Indus and #Ganges – according to new analysis."
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Future Of 1 Billion People In South Asia Hinges On #Water Pact
"Better collaboration is urgently needed to mitigate the impacts of #ClimateChange on three key river basins in South Asia – the #Brahmaputra, #Indus and #Ganges – according to new analysis."
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Nearly a billion people in the #Ganga and #Brahmaputra river basins to feel #ClimateChange impacts.
"The report advocated for collaborative action and inclusive policies to address the urgent challenges posed by climate change on major river basins in South Asia. Only through collective efforts can these regions navigate the complexities of climate change and safeguard the livelihoods of millions across the region, the report said."
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Nearly a billion people in the #Ganga and #Brahmaputra river basins to feel #ClimateChange impacts.
"The report advocated for collaborative action and inclusive policies to address the urgent challenges posed by climate change on major river basins in South Asia. Only through collective efforts can these regions navigate the complexities of climate change and safeguard the livelihoods of millions across the region, the report said."
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I've just returned from one week in #Bangladesh and here is a very "star wars" scene for #PhotoMonday from the banks of the #Brahmaputra in the north of the country.
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I've just returned from one week in #Bangladesh and here is a very "star wars" scene for #PhotoMonday from the banks of the #Brahmaputra in the north of the country.
