Water chemistry of tundra lakes in the periglacial zone of the Bellsund Fiord (Svalbard) in the summer of 2013.

摘要: Abstract Climate changes observed in the Arctic (e.g. permafrost degradation, glacier retreat) may have significant influence on sensitive polar wetlands. The main objectives of this paper are defining chemical features water within six small arctic lakes located Bellsund (Svalbard) area continuous occurrence. unique environmental conditions study offer an opportunity to observe phenomena influencing chemistry, such as: weathering, thawing, marine aerosols, atmospheric deposition and biological inputs. In samples collected during summer 2013, detailed tundra lake chemistry characteristics regarding ions, trace elements, pH specific electrolytic conductivity (SEC25) analysis were determined. Moreover, studied was compared from Tyvjobekken Creek precipitation samples. As a final step data analysis, Principal Component Analysis (PCA) performed. Detailed allowed us conclude what follows: (1) Ca2 +, Mg2 +, SO42 −, Sr geogenic origin, (2) NO3− present (ranging 0.31 1.69 mg L−1 0.25 1.58 mg L−1 respectively) be mixed i.e. processes (3) high contribution non-sea-salt SO42 − > 80% majority indicate considerable inflow sulphate-rich air area, (4) content chlorides (range: 25.6–32.0% meq L−1) indicates aerosol influence, (5) PCA result shows that transport constitute source Mn, Co, Ni, Cu, Ga, Ba Cd. However, further inter-season multi-seasonal recommended. Especially terms differentiation sources (atmospheric vs. degradation).