| Popis: |
In a joint geoscientific project in northwestern Spitsbergen at latitude 80°, the fluvial dynamics and transports in three small catchments (approx. 5 km2 each) including different proportions of glacierized areas were studied in 1990 and 1991. Only during the short summer are runoff and sediment transport possible. Therefore, the studies started before the beginning of the snowmelt. In the study area, transport in suspension is most effective, transport in solution and especially bedload are less important. Both summers are similar regarding the total discharge (Kvikkaa catchment: 2.8 to 2.4*106m3). But in 1990 flood peaks were higher by 40% (2200 Vs vs. 1600 Vs). Therefore, suspension and bedload transports were higher by a factor of about 2 (237 t vs. 124 t for suspension and 5 t vs. 2.2 t for bedload). |
