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Backpropagating Through a Flood

Remote Sensing Research

Backpropagating Through a Flood

We calibrated the sediment physics of our Bhote Koshi flood model by gradient descent through the full shallow-water solver, against terrain change measured from stereo satellite imagery. It worked, after three instructive failures.

Remote Sensing Research

The Flood You Could Hear: Bhote Koshi in the Seismic Record

A public seismometer 17 km from the river recorded the Bhote Koshi disaster twice: the glacier collapse as a sharp spike, and then three hours of the flood itself, audible through the ground.

Remote Sensing Research

The Bhote Koshi Flood in Half-Metre Relief: What the Stereo Data Changed

Vantor released the raw WorldView-3 stereo strips from the 2026 Nepal flood. The elevation model we built from them rewrote our sediment story, confirmed a model prediction, and counted the buildings the river took.

Remote Sensing Research

Could the Bhote Koshi Collapse Have Been Predicted?

We tested every satellite method that has ever forecast an ice-rock avalanche against the 26 August 2026 Nepal collapse. The answer matters for how the Himalaya is monitored.

All posts

DateTitle
Backpropagating Through a Flood
The Flood You Could Hear: Bhote Koshi in the Seismic Record
The Bhote Koshi Flood in Half-Metre Relief: What the Stereo Data Changed
Could the Bhote Koshi Collapse Have Been Predicted?
Bhote Koshi Flood 2026: A Reconstruction from Open Satellite Data
What Is GeoLibre? The Free Cloud-Native GIS, Explained
How to Add Satellite Imagery to GeoLibre (2026 Guide)
10 Best Free Sources of Satellite Data for Australia
Drone vs Aerial vs Satellite Imagery: Which to Use When
What Is Mine Rehabilitation? Stages, Standards and Proof
How to Add Satellite Imagery to QGIS: The 2026 Guide
Strait of Hormuz Satellite Imagery: Tracking Ships Gone Dark
Google Earth Pro Desktop Is Being Discontinued: What Now?
How Disturbed Area Is Measured for MRF Reporting
Satellite-Derived Bathymetry, Put to the Test Against Laser Truth
EUDR Compliance: How Satellite Imagery Provides Proof
Satellite Change Detection: How to Track Change Over Time
As 10 Melhores Fontes Gratuitas de Imagens de Satélite do Brasil
Die 10 besten kostenlosen Quellen für Satellitenbilder in Deutschland
What is Atmospheric Correction in Satellite Imagery?
Multispectral vs Hyperspectral Satellite Imagery Explained
What is Pansharpening in Satellite Imagery?
What is SAR Satellite Imagery? How Radar Sees What Optical Can't
How Much Does Satellite Imagery Cost in 2026?
That Time Everyone Thought the Three Gorges Dam Was Collapsing Due to an Orthorectification Error
10 Best Free Sources of Satellite Data for Brazil
10 Best Free Sources of Satellite Data for Germany
10 Best Free Sources of Satellite Data for the UK
10 Best Free Sources of Satellite Data for Canada
10 Best Free Sources of Satellite Data for the USA
Understanding DEMs, DSMs, and DTMs: A Complete Guide to Digital Elevation Data
Understanding Stereoscopic Satellite Imagery: From Capture to DEM
Maxar Rebrand: Vantor and Lanteris Replace Maxar Intelligence and Space Systems
Commercial Optical Satellite Imagery: Bands, Resolution and Ordering
Orthorectification: Turning Raw Satellite Data Into Map-Ready Imagery
Why We Process Every Image
Instant NDVI in Browser, Capture Notifications, and More Updates to the Pera Portal
How to Buy Satellite Imagery in 2026: Prices and Process
21AT Data Now Available Through Geopera
ESA's Biomass Mission Explained: Peering Inside the World's Forests
Hyperspectral Arrives: Geopera Partners with Wyvern
Satellite Tasking Explained: How It Works in 2026
Geopera Joins Maxar Intellgence's Partner Ecosystem
Which Satellite Imagery Should You Buy? Matching Sensors to Applications
Satellite Imagery for Mineral Exploration and the Mining Lifecycle
Vegetation Management in Australia Using Satellite Data
Old Satellite Images: Where to Find Historical Imagery Since 1972
Red Edge in Remote Sensing: Applications and Advantages
The 5 Best Free Sources of Elevation Data in Australia
Google Earth vs Commercial Satellite Imagery: Understanding Your Options
Understanding Remote Sensing Vegetation Indices
10 Free Sources of Satellite Data in 2026
What is Satellite Imagery?