Hidden Radiation Hotspots Mapped on Bay of Bengal Beaches

A new investigation of beaches along the Bay of Bengal has revealed localised hotspots of natural radioactivity far exceeding global averages. Researchers analysing sand samples found that concentrations of the primordial radionuclides Radium-226 and Thorium-232 were, on average, 2.2 and 4.1 times higher than typical levels found worldwide.

Crucially, this elevated radiation is not the result of man-made contamination. Scientific analysis points to the natural geological composition of the sand, which is rich in minerals like monazite and K-feldspar. While the beaches are broadly safe, a new spatial modelling technique has pinpointed specific, concentrated areas where radiological risk indices can surpass international safety thresholds. The element Thorium-232 was identified as the primary contributor, accounting for roughly 75% of the total risk.

The study provides the first detailed radiological map of the area, establishing a framework for future coastal surveillance. Scientists now recommend that these delineated high-risk hotspots should be managed with restricted access, hazard signage, and periodic monitoring.