The Mzymta and Kudepsta enter the Black Sea a few kilometres apart on the Sochi coast, and in late May they are carrying snowmelt off the western Caucasus. The shelf is narrow here, so the plume has little room to spread before the bottom drops away. On 20 May 2013 a LIF LiDAR ran repeat transects across both outflows, sampling continuously along the ship track rather than at stations.
Mineral suspended matter reaches above 80 mg/L directly on the Mzymta mouth and falls to near zero within about two kilometres of it. Chlorophyll a spans 0.05 to 1.25 µg/L over the same box and the suspended organic fraction 0.6 to 6.6 mg/L, both peaking on the same spot. That peak is a few hundred metres across, narrower than the spacing of any practical station grid, so whether it appears in the data at all is settled when the stations are placed.
The same shelf was surveyed on 27 May 2010, three years earlier and a week later in the season. Read against that campaign, the pair gives the Mzymta plume at two points in the same snowmelt window.