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#himalayas — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #himalayas, aggregated by home.social.

  1. Flood And Landslide Susceptibility Assessment And Multi Hazard Interaction Mapping Using Machine Learning And GIS For Sustainable Settlement Planning In Nepal
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    doi.org/10.1007/s44288-026-006 <-- shared paper
    --
    H/T @Narayan Thapa | Earth Data Modeling
    “Nepal lies within an active seismic zone and is influenced by most dynamic climatic systems in the world. It faces compounding floods and landslide threats. Impacts are worst where multi-hazard interactions create spatially linked corridors. Despite frequent co-occurrence, national-scale assessments remain limited. This study presents machine learning and GIS-based approach to map nationwide susceptibility to floods, landslides, and identify their potential interaction zones, and delineate critical multi-hazard flow zones through spatial adjacency analysis. Using Google Earth Engine, the Random Forest model integrates topographic, climatic, environmental, and hydrological datasets to overcome subjective expert-driven methods. The model achieved strong predictive accuracy (AUC: 0.84 for floods, 0.85 for landslides). The results showed 19% of Nepal’s lowlands are medium to very highly susceptible to inundation, threatening approximately 900,000 people and over 3.4 million buildings; whilst in the hilly terrains, 40% is susceptible to slope-failure endangering 200,000 people and about 0.6 million buildings. K-means clustering followed by spatial adjacency analysis identified four spatial zonation: 81% of national area as low-hazard zone, 9% as flood-only zone, 5% as landslide-only zone, and 5% as interaction zones. Critical multi-hazard flow zone covering 7,588 km² represents spatially connected corridors linking interaction zones to downstream flood-prone populated areas, affecting 88 km² built-up land and 1,722 km² cropland. These zones represent susceptibility-based spatial connectivity rather than physically simulated cascading processes. These findings support recommendations for risk-informed land-use planning, resilient infrastructure development and climate adaptation aligned to sustainable development and investment risk screening…”
    #GIS #spatial #mapping #GoogleEarthEngine #MachineLearning #RemoteSensing #GeospatialAI #DisasterRiskReduction #MultiHazard #ClimateAdaptation #climatechange #extremeweather #LandUsePlanning #SustainableDevelopment #InfrastructurePlanning #RiskAssessment #NaturalHazards #Nepal #EarthObservation #HinduKushHimalaya #HKH #HinduKush #Himalayas #risk #hazard #assessment #national #regional #spatialanalysis #spatiotemporal #massmovement #landslide #assessment #mitigation #water #hydrology #flood #flooding #sustainability

  2. Compound Hydrogeomorphic Cascades And Rapid Upstream To Downstream Hazard Coupling In The Eastern Himalaya
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    doi.org/10.1038/s41598-026-529 <-- shared paper
    --
    doi.org/10.1007/s11600-022-009 <-- 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...”
    --
    “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

  3. Compound Hydrogeomorphic Cascades And Rapid Upstream To Downstream Hazard Coupling In The Eastern Himalaya
    --
    doi.org/10.1038/s41598-026-529 <-- shared paper
    --
    doi.org/10.5194/esurf-13-1281- <-- shared paper
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    doi.org/10.1007/s11069-025-077 <-- shared paper
    --
    [I recognise that the photo is instead for the floods, etc in Lubra, Nepal - but felt it better showed the hydrogeomorphical setting (sic) for the 'casual' post viewer...]
    H/T @Kuldeep Dutta
    “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…”
    --
    “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/) 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 #Flooding #alluvial #fluvial #water #hydrology #hydrography #flood #flooding #spatialanalysis #spatiotemporal #mountain #plain #hydrometeorological #hydrogeomorphology #ArunachalPradesh #Assam #India #hillslope #floodplain #rainfall #precipitation #extremeweather #engineeringgeology #massmovement #landslide #debrisflow #risk #hazard #monitoring #GIS #spatial #mapping #remotesensing #satellite #Sentinel #sedimentation #humanimpacts #infrastructure #damage #cost #economics #public #safety #model #modeling #downstream

  4. In 2022, DJI was able to fly one of their drones over Mt. Everest.

    Here's the video recorded by the drone around the highest point on Earth!
    youtu.be/Zz9oI3B6v4c

    In 2024 and 2025, DJI drones, specifically the Mavic 3 Pro and Mavic 4 Pro, achieved record-setting, high-altitude flights over Mount Everest, capturing 8K footage of the summit at 8,848 meters. These drones, often operated with 8KRAW, showcased remarkable stability in high winds (up to 50 km/h) and thin air.

    DJI Mavic 3 Pro: youtu.be/A-iVxaFhr7s
    DJI Mavic 4 Pro: youtu.be/csDriucITDE

    Here are some of the physics challenges involved 👇

    #Drone #DronePhotography #MtEverest #Everest #Aerodynamics #Physics #DJIdroneshots #HighAltitude #ThinAir #PhysicsChallenge #Nepal #Himalayas #Drones #DroneShots

  5. Permafrost Distribution, Degradation, And Potential Mass Movement Cascades In The Western Himalaya Using Machine Learning And Numerical Models
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    doi.org/10.1038/s44304-026-002 <-- shared paper
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    doi.org/10.1038/s41598-025-220 <-- shared (earlier) paper
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    doi.org/10.1080/2150704X.2025. <-- shared (earlier) paper
    --
    H/T @abhinav Alangadan
    “Can we develop a first-order understanding of permafrost degradation and glacial lakes exposed to degradation-induced mass movements in the Himalaya?
    [The authors] tried to address this question. The study [first link above] integrates machine learning, statistical modeling, and numerical modeling to investigate high-resolution permafrost distribution, potential degradation, and associated mass-movement hazards in the Kinnaur district of Himachal Pradesh, India.
    Using rock glaciers as proxies, [they] generated a high-resolution permafrost distribution using machine learning, while potential degradation zones were delineated using the 0°C isotherm as a first-order indicator. [They] further identified glacial lakes located near potentially degrading permafrost zones and reconstructed their bathymetry. A detailed scenario-based GLOF process-chain simulation was then carried out for Kashang Lake using r.avaflow and HEC-RAS.
    [Their] results indicate that seven glacial lakes in #Kinnaur are located close to potentially degrading permafrost zones. The simulations further show that a potential GLOF from Kashang Lake could inundate critical downstream infrastructure, including nearly 11 km of National Highway 5…”
    #permafrost #distribution #GIS #spatial #mapping #Himalayas #India #Kinnaur #HimachalPradesh #KashangLake #massmovement #engineeringgeology #machinelearning #AI #model #modeling #numericalmodel #glaciallakes #glaciet #glacial #glaciallakeoutburstflood #GLOF #cryosphere #geostatistics #rockglaciers #GeoAI #bathymetry #processchainsimulation #HECRAS #avaflow #risk #hazard #mitigation #riskassessment #infrastructure #HEP #publicsafety #downstream #avalanche

  6. In 2022, DJI was able to fly one of their drones over Mt. Everest.

    Here are some of the physics challenges involved (see comments) 👇

    Here's the drone video (2022) recorded at the highest point on Earth!
    youtu.be/Zz9oI3B6v4c

    In 2024 and 2025, DJI drones, specifically the Mavic 3 Pro and Mavic 4 Pro, achieved record-setting, high-altitude flights over Mount Everest, capturing 8K footage of the summit at 8,848 meters. These drones, often operated with 8KRAW, showcased remarkable stability in high winds (up to 50 km/h) and thin air.

    DJI Mavic 3 Pro: youtu.be/A-iVxaFhr7s
    DJI Mavic 4 Pro: youtu.be/csDriucITDE

    #Drone #DronePhotography #MtEverest #Everest #Aerodynamics #Physics #DJIdroneshots #HighAltitude #ThinAir #PhysicsChallenge #Nepal #Himalayas #Drones #DroneShots

  7. India Safaris @indiasafaristrends.wordpress.com@indiasafaristrends.wordpress.com ·

    Indian Towns with a European Vibe: Explore Charm, Luxury, and Culture in 2026–2027

    India is a land of diversity, from bustling metropolises to serene villages. Yet, tucked away in certain corners are towns that exude a distinctly European vibe, cobblestone streets, colonial architecture, quaint cafes, and misty hilltops reminiscent of the Alps. These towns are perfect for travelers seeking luxury India tours, offbeat experiences, and scenic escapes. Whether you’re planning a Golden Triangle tour in India, a wildlife holiday in India, or an immersive India tour package, […]

    indiasafaristrends.wordpress.c

  8. 🌏 Work from the Himalayas!🏔️👨🏻‍💻✨

    Nepal is set to introduce a digital nomad visa within the next year, welcoming remote workers to experience its breathtaking landscapes and rich culture.

    This initiative aims to boost tourism and attract global talent, making Nepal a top destination for digital nomads seeking adventure and tranquillity.

    Why Nepal?
    — Stunning natural beauty
    — Affordable living
    — Vibrant culture
    — Warm hospitality

    kathmandupost.com/money/2025/0

    risingnepaldaily.com/news/6274

    #Nepal #DigitalNomad #Nomad #NomadLife #DigitalNomafLife #DigitalNomadLifestyle #Visa #NepalVisa #Himalaya #Himalayas #Tourism #NepalTourism #NaturalBeauty #Himal #Mountains #Adventure #Culture #VisaPolicy #NomadicLife #NomadicLove #NomadicLifestyle #HimalayanRepublic #NepaliCulture #VibrantCulture #VisitNepal #Nomads #RemoteWork #RemoteWorkLife #NepalHimalayas #नेपाल #हिमालय

  9. #15August #HappyIndependenceDay #RepublicOfIndia

    As we #Celebrate our 76th #IndependenceDay today here is the symbol of our #Democracy the #Buddhist Dharam Chakra (Wheel of Law) which is the centre of the #IndianFlag

    It has 24 spokes representing the 24 Rishis of #Himalayas. It also represents Time (24 hours of the day) to signify that #India is constantly changing & marching ahead.

    This 2nd century #Budhism Dharam Chakra comes from Amaravati in #AndharaPradesh & was on a Christies sale.

  10. This one and my other photographs of the Everest Region – both with and without labels marking the peaks — can be purchased on #FineArtAmerica as posters, framed prints, metal prints (as seen here), and other products.

    fineartamerica.com/profiles/ra

    Licenses to use this and other similar images are available on Zoonar, at zoonar.com/profile/georadek?wi.

    #AYearForArt #mountains #mountaineering #Everest #EverestBaseCamp #Himalayas #trekking #hiking #climbing #WallArt #WallDecoration #MountEverest #Lhotse

  11. #GlacialMelt is Dispossessing #Nepal’s #Indigenous Communities

    Shrinking glaciers are forcing residents to flee, leaving a scattering of ghost towns across the country’s unforgiving north.

    By Tulsi Rauniyar, April 04, 2023

    "The indigenous communities of the upper #Himalayas are known for their age-old lifestyle, which has adapted to one of the most hostile landscapes in the world. The people of Upper Mustang are some of the last guardians of the Tibetan spiritual identity, whose century-old cultural identity and practices have been weakened by mass out-migration."

    The reason? #ClimateChange !

    Lhamu Tsering, a former inhabitant of the region describes the situation: "More than a decade ago, when it snowed, it would come up to here. But now, it’s barely a few inches. The mountains barely have any snow on them. In the months of March and April, the melting of snow and the occurrence of rainfall would provide sufficient irrigation to the fields, enabling the sowing of various crops such as barley, wheat, peas, and potatoes. But with lower levels of snowfall, the sowing season has gone awry."
    #ClimateCrisis #ClimateCatastrophe #WaterIsLife #Tibetans #Tibet

    thediplomat.com/2023/04/glacia

  12. This one and my other photographs of the Everest Region – both with and without labels marking the peaks — can be purchased on #FineArtAmerica as posters, framed prints, metal prints (as seen here), and other products.

    fineartamerica.com/profiles/ra

    Licenses to use this and other similar images are available on Zoonar, at zoonar.com/profile/georadek?wi.

    #AYearForArt #mountains #mountaineering #Everest #EverestBaseCamp #Himalayas #trekking #hiking #climbing #WallArt #WallDecoration #MountEverest #Lhotse

  13. The classic view of Mount Everest (Chomolungma / Sagarmatha) from the top of Kala Patthar (5645m). South Col is seen between Everset and Nuptse and the ridge rises from it to the top of Lhotse. Nuptse looks spectacular on the rights with sharp peak. Autumn trekking season. Solukhumbum, Everest Base Camp Trek, Everest Region, Nepal.

    fineartamerica.com/featured/mo

    #EverestBaseCamp #mountains #trekking #Himalayas #MountEverest #mountainscape #MountainPhotography #eightthousanders #Everest #Sagarmatha

  14. Kongma La (5529m), view towards the West. The eight-thousander Cho Oyu, the sixth-highest mountain in the world, is on the left, under the cloud here. Three Passes Trek, Khumbu, the Himalayas. Sagarmatha National Park – a UNESCO World Heritage Site, Everest Region. Solukhumbu, Nepal.

    fineartamerica.com/featured/1-

    #MountEverest #EverestRegion #landscape #LandscapePhotography #Himalayas #EverestBaseCamp #ThreePassesTrek #trekking #MountainPhotography #mountains #outdoor #AYearForArt

  15. The eight-thousander Cho Oyu, Tenzing Peak and Hillary Peak seen among many other Himalayan mountains from a glacial moraine high above the Ama Dablam Base Camp in the Khumbu Region, the #Himalayas. Photo with peak labels. #SagarmathaNationalPark, #EverestRegion. Solukhumbu, Nepal.

    fineartamerica.com/featured/vi – prints. DM me to download.

    #Everest #MountEverest #EverestBaseCamp #AmaDablam #Tenzing #EdmundHillary #Sherpa #trekking #mountains #mountaineering #Nepal #photo #mountainscape #landscape

  16. Mount Everest, Nuptse and Lhotse seen from Gokyo Ri at sunset. An autumn view. Photo with peak labels. Gokyo Trek, Khumbu, the Everest Region, Himalayas. Sagarmatha National Park, a UNESCO World Heritage Site. Solukhumbu, Nepal

    Prints of this photo and other similar images are available now.

    fineartamerica.com/featured/mo

    #MountEverest #trekking #mountains #Himalayas #EverestBaseCamp #hiking #mountaineering #photoNepal #Lhotse #photography #Nepal

  17. This was taken well after #sunset into early darkness but the #peaks of the #himalayas on the #trek to #EverestBasecamp in #Nepal are so high that they catch the glow even after darkness has set in. It’s truly unlike any light I’ve seen.

    #LandscapePhotography #Photography #Nature #NaturePhotography #Mountains #Snow #Everest #MountEverest #PhotoOfTheDay