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5-10 ka, we calculate geomagnetic latitude from geographic latitude and the palaeopole positions of Ohno & Hamano (1992) by subtracting the palaeocolatitude from 90[degrees] (Eq.
The cosmic ray dose rate was estimated (Prescott & Hutton 1994), making allowance for the rock thickness of the cave roof, geomagnetic latitude, altitude, and geomagnetic field changes during the late Quaternary.
At the geomagnetic latitudes of the UK we require a Kp index of about 5 in northern Scotland and 7 in southern England to have some confidence in seeing a display.