7129 to 7140 of 14119 results
-
-
-
Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic Ocean
Read more of: Antarctic krill aggregation characteristics from acoustic observations in the Southwest Atlantic OceanThe distributional features and physical characteristics of 4830 krill (Euphausia superba Dana) aggregations detected acoustically in the Southwest Atlantic between 26 January and 21 February 1981 are described. Results are […]
-
-
-
-
-
-
-
Differences in backscattering strength determined at 120 and 38 kHz for three species of Antarctic macroplankton
Read more of: Differences in backscattering strength determined at 120 and 38 kHz for three species of Antarctic macroplanktonThe ability to acoustically separate zooplankton species is an important requirement for ecological studies and to improve biomass estimates. In order to distinguish between Euphausia superba and other swarm-forming macroplankters […]
-
Interpretation of acoustic data at two frequencies to discriminate between Antarctic krill (Euphausia superba Dana) and other scatterers
Read more of: Interpretation of acoustic data at two frequencies to discriminate between Antarctic krill (Euphausia superba Dana) and other scatterersA visual classification was carried out of echo trace characteristics derived from 113 integration intervals of 1 n mi (nautical mile) each taken from the Southern Ocean in the area […]
-
What colour is penguin guano?
Read more of: What colour is penguin guano?The identification and quantification of Antarctic Pygoscelis penguin colonies depends increasingly on recognition of the characteristic optical properties of guano deposits, but almost all knowledge of these properties until now […]