THE HYDROTHERMAL INFLUENCE ON METALS SCAV ENGING IN THE COASTAL AREAS

The hydrothermal influence on suspended matter and metals scavenging w as studies in shallow waters of moderate (Kuril Islands) and tropical (Papua New Guinea) zones. The rate of suspended matter sedimentation i s higher (3 - 10 time) in warm tropical waters then in cold moderate o nes. The hydrothermal influence leads to rising of Fe, Mn, Zn, Cu scav enging in tropics because of sedimentating matter enrichment by metals . In moderate zone the such enrichment is compensated by diminishing o f sedimentation rate. The Mn scavenging in cold water with hydrotherma l influence is minimal due to slow uptake to the suspended matter and decrease of sedimentation rate.