Collocated and simultaneous measurement of surface slope and amplitude of water waves

Autor:	J. D. Barter, K. L. Beach, P. H. Y. Lee
Rok vydání:	1993
Předmět:	Physics Capillary wave Wavelength Optics Amplitude business.industry Surface wave Dynamic range Wave height Light beam Dispersion (water waves) business Instrumentation
Zdroj:	Review of Scientific Instruments. 64:2661-2665
ISSN:	1089-7623 0034-6748
Popis:	We demonstrate by experiment that, in addition to the local surface slope, local surface elevation can also be directly measured using the refracted light beam traversing an air‐water interface, thus showing the feasibility of a new surface slope and wave height amplitude gauge for use in studying water waves. We have achieved surface height resolutions as small as 40 μm for the range of surface wavelengths λ∼1.2–2.4 cm used in the present experiments. This measurement principle is readily adaptable to waves of different scale. The available dynamic range defined by the ratio of maximum wave amplitude to minimum resolvable amplitude need only be limited by the useful dynamic range of the photodetector when matched to a laser of suitable frequency and sufficient power.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e3c33f7710bc9335f29e31b250e85d3a https://doi.org/10.1063/1.1143887 Zobrazit plný text záznamu