Visible and near-infrared orthomosaic of Samoylov Island, Siberia, summer 2015 (5.3 GB) ...

• Main Authors: Boike, Julia, Veh, Georg, Viitanen, Leena-Kaisa, Bornemann, Niko, Stoof, Günter, Muster, Sina
• Format: Dataset
• Language: English
• Published: PANGAEA 2015
• Subjects: Aerial Photographs; Arctic Tundra; infrared imagery; island; Lake/Pond; river delta; Multiple investigations; Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; Arctic; Island Lake; permafrost; Tundra; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.845724; https://doi.pangaea.de/10.1594/PANGAEA.845724

High-resolution land cover mapping is needed in the heterogeneous arctic landscapes that change land surface parameters over a range of a few meters. Polygonal tundra on Samoylov Island features a network of dry polygonal rims interspersed with patches of wet tundra and polygon ponds. We obtained sub-meter resolution aerial images of Samoylov Island by mounting two Nikon D200 cameras on a helium-filled balloon. Images were acquired in the visible (VIS) and near-infrared (NIR) ranges. The internal IR-filters were removed from the cameras in a laboratory (LPD LLC, USA), allowing them to capture a maximum range from about 330 to 1200 nm. A Schneider Kreuznach B+W 486 UV-IR cut filter was used for one of the cameras to obtain images in the VIS range, from about 400 to 690 nm, while the second camera was fitted with a Schneider Kreuznach B+W IR-filter 093 to acquire images in the NIR range, above about 830 nm. Flights took place on August 12, 15 and 16, 2015. Flight altitudes ranged between 100 m to about 1500 m. ...