Dust flux, Vostok ice core

Dust flux, Vostok ice core
Two dimensional phase space reconstruction of dust flux from the Vostok core over the period 186-4 ka using the time derivative method. Dust flux on the x-axis, rate of change is on the y-axis. From Gipp (2001).

Tuesday, March 31, 2015

Five years of gold and copper

Today's chart is a kind of state space diagram obtained by plotting the gold price (dollars per ounce) against the copper price (dollars per pound).

There are a couple of regions of pitched battle outlined in blue; the first lasting about 18 months, and the second going on about two years (with the little tail poking out the back).

Overall the graph resembles the dogs in the following:

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