Webb25 okt. 2024 · In this paper, under-ice ambient noise in the Mudan river (Jilin Province, Northeast of China) is analyzed using the data recorded by autonomous hydrophones to test if the river ice environment is an effective analog for studying under-ice noise of multi-year ice sheets in the Arctic. Webb17 dec. 2013 · We infer the fractional coverage of sea ice leads (as concentration) in the Arctic from Advanced Microwave Scanning Radiometer for Earth Observing System (EOS) (AMSR-E) brightness temperatures. The lead concentration resolves leads of at least 3 km in width. We introduce a new algorithm based on the progressive probabilistic Hough …
Ocean acoustics in the changing Arctic: Physics Today: Vol
Webb1982. 1981. 1980. 1979. ChArctic v 3.4.0. Record minimums or maximums are updated annually. Therefore, a newly-set record may not be reflected in the chart until after the annual update. View additional years by clicking the dates in the legend. Roll your cursor over the line to see daily sea ice extent values. Webb8 juni 2024 · According to previous studies, the underwater acoustic environment in the Arctic Ocean is dependent on seasonal and geophysical conditions and is correlated with sea ice (PAME, 2024). The Arctic Ocean has a unique sound propagation environment because its sea ice cover and ice-containing water have different boundary conditions … gatwick airport job centre
Arctic sea ice hits second-lowest level on record - Nature
WebbSome of the acoustic energy reflects with each interaction, some is scattered by the rough ice, and the rest is converted to compressional … WebbThe extent of the sea ice is defined by areas that have an ice concentration of at least 15%, i.e. 15% of the surface is covered by ice. The grey band around the climatological mean value corresponds to plus/minus one standard deviation . The extent of the ice is based on satellite data and are from the Ocean and Sea Ice, Satellite Application ... Webb15 jan. 2024 · Between 2013 and 2024, 183 adult Arctic Char (fork length >400 mm) were captured and surgically implanted with acoustic transmitters (V16, Vemco, Halifax, Nova Scotia, Canada). The transmitters have a detection probability of more than 50% within ∼500 m of a marine receiver (see Moore et al. 2016 for details). gatwick airport jobs fair