= David Osmond
{disambiguate=double diffusion researcher}
{c}
<David Osmond (double diffusion researcher)> authored <Some analysis of a two-dimensional double diffusion experiment by David Osmond>, a Woods Hole geophysical-fluid-dynamics report. It analyzes how two dissolved substances with unequal diffusion rates can drive circulation even when their injected solutions have equal density.<Some analysis of a two-dimensional double diffusion experiment by David Osmond>[Sections 1–2 and Figure 1]{ref}
The apparatus uses a long thin tank with salt solution entering at one end and sugar solution at the other, each at approximately five cubic centimetres per minute. A central constant-head overflow keeps the total volume fixed. Sugar diffuses more slowly than salt, avoiding the wall heat losses that complicate a heat-and-salt experiment. A salt-rich plume loses salt faster than it gains sugar: its core becomes lighter while the surrounding fluid becomes denser. The opposite arrangement occurs at the sugar inlet. The report connects these opposing motions with the later density field and layered circulation.<Some analysis of a two-dimensional double diffusion experiment by David Osmond>[Section 2, equal-density sources and opposite plume/core responses]{ref}
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