Drones Over Ice: How Unmanned Vehicles Are Transforming Polar Field Research

A decade ago, studying a calving glacier front meant deploying researchers in small boats into waters littered with ice debris, beneath unstable ice faces that could collapse without warning. Today, a researcher can launch a small drone from a safe distance and fly it to within metres of the glacier face, capturing high-resolution video and photogrammetric data that enables precise measurement of calving rates, ice face geometry, and meltwater discharge — in complete safety, in a fraction of the time, at a fraction of the cost. Drones are transforming polar field research across every domain — from wildlife ecology to glaciology to atmospheric science.

Glacier Monitoring by Drone

Structure-from-motion photogrammetry — generating three-dimensional models from overlapping photographs — has been revolutionised by drones. A survey drone equipped with a high-resolution camera can map a glacier surface with centimetre-scale accuracy by flying a systematic grid pattern and photographing the surface from multiple angles. Software then reconstructs a detailed digital elevation model from thousands of overlapping images. Comparing surveys conducted months or years apart reveals precisely where ice has been lost or gained, at spatial resolutions that satellite altimetry cannot match. Drone surveys are now standard practice at many monitored glaciers in the Alps, Svalbard, and Greenland.

Wildlife Research Without Disturbance

Traditional polar wildlife research required researchers to approach animals closely enough to observe or photograph them — often causing stress behaviours that compromised the data and potentially harmed the animals. Drones equipped with zoom cameras and thermal imaging sensors can observe polar bears, walrus herds, seabird colonies, and whale pods from altitudes and distances that minimise disturbance. Research on walrus haul-out sites — where thousands of animals aggregate on beaches — has been transformed by drone surveys that can count and assess the health of thousands of individuals in a single flight, providing population data that was previously impossible to obtain.