1999 Fiscal Year Final Research Report Summary
Research on Air Pollution and Evaluation of the Environmental Effects in Siberian Wetland.
| Project/Area Number |
09041120
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B).
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Civil and environmental engineering
|
|---|
| Research Institution | HOKKAIDO UNIVERSITY |
|---|
Principal Investigator |
OHTA Sachio Grad. School of Eng., Hokkaido Univ., Pro.00190869, 大学院・工学研究科, 教授 (00100058)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
FUKASAWA Tatsuya Grad. School of Eng., Hokkaido Univ., Inst., 大学院・工学研究科, 助手 (80292051)
MURAO Naoto Grad. School of Eng., Hokkaido Univ., Asso. Pro., 大学院・工学研究科, 助教授 (00190869)
|
|---|
| Project Period (FY) |
1997 – 1999
|
| Keywords | Siberian wetland / air pollution / Arctic haze / Norilsk mining / sulfur dioxide / deposition and accumulation / sulfate / heavy metals |
|---|
| Research Abstract |
Atmospheric concentrations of aerosol chemical species and gaseous pollutants such as sulfur dioxide, nitric oxide and nitrogen dioxide have been measured at Yakutsk, Tiksi and Norilsk in Siberia since 1994.
At Tiksi concentrations of elemental carbon, organic matter, sulfate and heavy metals as lead, copper, vanadium, nickel and arsenic increase in winter and spring. The results show occurance of the arctic haze also around Tiksi area.
At Norilsk, atmospheric concentration of sulfur dioxide is high as 260 ppbv, which is ten times more than that in Sapporo. Pine leaves, moss and surface soil around Norilsk contain much amount of sulfate and heavy metals as copper, nickel, cobalt and lead, which are derived from the nickel and copper smeltery in Norilsk city. The upper layer in the surface soil (active layer) contains higher concentrations of sulfate and heavy metals. By using the vertical profile of the pollutant concentration in soil, we calculated accumulation of the pollutants for these 30 years emitted from the smeltry in Norilsk city.
Ten days backward trajectory analysis shows that a large amount of air pollutants is transported from Ural industry and Norilsk area to Tiksi in winter.
|
