Histogrammetric hodographs:
Progressive vector diagram
Cumulative advection over 20 days (Leg 08 survey period)
The upper meter indicates a 100km displacement, or
a mean advection of ~6cm/secColor changes color roughly every day
The current meter and the nearest known fluid source are located
in the white box
The southwestward net displacement represents the effect of advection at the
upper meter (300mob), while the northward trace represents the effect of
advection at the lower meter (25mob)