The main aim of the expedition was to extend the magnetic survey of New Zealand by investigating Dundonald " in the Auckland Islands.
22.
Francis Ronalds and Edward Sabine and others in a global magnetic survey and updated machines were in use well into the 20th century.
23.
To solve this mystery once and for all, a number of physicists recommended that a magnetic survey of the entire globe be carried out.
24.
The main aim of the expedition was to extend the magnetic survey of New Zealand by investigating the Dundonald " in the Auckland Islands.
25.
In company with Father Walter Sidgreaves, he made magnetic surveys, in 1868 of western France, in 1869 of eastern France, and in 1871 of Belgium.
26.
The exploration, which included ground magnetic surveys and geophysical data analysis of those surveys, has indicated the potential for several million tons of iron ore.
27.
The following year the fast three-masted schooner " Carnegie ", built for the Carnegie Institution of Washington for use in magnetic surveys in the Pacific Ocean.
28.
Initial geological investigation occurred from 1946 to 1963, which involved drilling the sea-bed, sonic surveys, submarine boring, observations using a mini-submarine, and seismic and magnetic surveys.
29.
Scott planned a magnetic survey of the colony and reported that, despite the shortage of staff and equipment,'the establishment is now complete in every respect '.
30.
An aerial magnetic survey was made of the Chesterfield area in 1966, and a seismic survey in 1972, which apparently have not been followed up yet.
