A 2025 analysis of Swarm satellite measurements covering 2014–2025 found that the South Atlantic Anomaly expanded by about two million square miles (nearly half the size of continental Europe).
January 01, 2025
high
temporal
Quantitative finding from a multi‑year satellite study of changes in Earth's magnetic field.
A 2025 analysis of Swarm satellite data from 2014–2025 reported that different strong-field regions changed in opposite ways: the strong magnetic region near Canada shrank by an area approximately the size of India, while the strong magnetic region over Siberia grew by an area approximately the size of Greenland; the analysis also found the rate of weakening of the South Atlantic Anomaly increased since 2020 with spatially variable change rates.
January 01, 2025
high
temporal
Spatial and temporal changes in multiple regional magnetic field anomalies identified in a multi‑year satellite dataset.
An ice plain forms when glacier ice stretches and thins across a flat bedrock bed, creating a broad, low-slope grounded area that becomes more susceptible to floating and rapid breakup if sufficiently thinned.
high
process
Explains how thinning across flat bedrock can create conditions that favor flotation and calving.
Buoyancy-driven calving occurs when thinned glacier ice lifts off its bed and floats, causing abrupt breakup into icebergs as the glacier moves into deeper water.
high
process
Mechanism by which flotation of an ice mass leads to sudden calving events.