For a Seawolf-class submarine travelling at 24 knots (12.5 metres per second) and 30 metres (98 feet) depth, the wake's magnetic field reaches 10⁻¹² tesla - "well within the sensitivity range ...

Higher carbon-dioxide levels in the atmosphere change all these things. The gas’s mere presence acidifies seawater. Its ...

of a nuclear submarine in seawater can reach up to 88 square metres (947 square feet). This means that underwater target detection can be achieved using just "common magnetic detectors", Li and ...