In 1831 James Clark Ross pinpointed this spot; later Arctic studies found it had moved more than 150 miles
[DOC] [TLE] Sir James Clark Ross | British explorer | Britannica.com [PAR] Sir James Clark Ross, (born April 15, 1800, London, Eng.died April 3, ... 
magnetic surveys in the Arctic and Antarctic and discovered the Ross Sea and ... 
uncle, Sir John Ross, he located the north magnetic pole on June 1, 1831.