UAV survey #2
Clemens used the good weather to perform the second UAV survey after two weeks of strong ablation and meltwater runoff.
First UAV survey
Summer has finally arrived and snow was completely melted in the glacier forefield. We performed the first UAV survey using the DJI Phantom IV drone. Again we applied the salt dilution method to collect another runoff sample for calibraion of our automated runoff measurement.
High-precision geolocation
The remaining fixed GCPs were mounted around the central glacier forefiel of Jamtalferner. By using an Differential GPS the exact locations of the GCPs were measured with an accuracy of a few centimeters. High snow melt rates have melted almost all snow in the area of interest and increased the runoff considerably up to more than 6m³/s. Thus, we have started the discharge calibration measurements using the salt dilution method.