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In this same context, another alignment with less magnetic variations in relation to the ones described above is also observed.
This study shows that the volcanic building presents four different magnetic behaviors characterized by magnetic variations in the eastern slope, in the limit of protovolcano caldera, in the floor of the protovolcano (El Playon) and those correlated with areas of weakness like faults and/or fractures.
In 1701 the Paramore surveyed the English Channel on a mission as much concerned with spying out French harbours as with measuring magnetic variations.