Thermographic Techniques to Explore Small-Scale Processes at Water Surfaces
Bernd Jähne,
Lucas Warmuth,
Roman Stewig,
Kerstin E. Krall
Kapitel/Beitrag aus dem Buch: Beyerer, J et al. 2023. OCM 2023 - 6th International Conference on Optical Characterization of Materials, March 22nd – 23rd, 2023, Karlsruhe, Germany : Conference Proceedings.
Techniques based on thermography are wellestablished
for destruction-free material inspection. A similar
technique was invented independently in environmental sciences
to explore exchange processes at air-water interfaces.
The analysis was, however, limited to one-dimensional vertical
transport assuming a horizontally homogeneous and stationary
exchange process on average. In this contribution, first steps
pursuing a true spatio-temporal approach are presented. This
allows much faster measurements, identification of the transport
mechanisms and has the prospect to even measure the
shear stress right at the water surface, which drives exchange
processes at a windy water surface.