@article{oai:nipr.repo.nii.ac.jp:00006150,
 author = {Arai,Nobuaki and Kuroki,Maki and Sakamoto,Wataru and Naito,Yasuhiko},
 journal = {Polar bioscience},
 month = {Feb},
 note = {P(論文), Acceleration data loggers were attached to five adult Adelie penguins at Hukuro Cove, Lutzow-Holm Bay in austral summer 1997/1998. The loggers recorded time series data of speed, depth, surging acceleration and swaying acceleration in flush memories inside. From time series analyses, the frequency of 2- to 3-Hz was found in the surging acceleration during descent in a straight line. The cycle seemed to correspond to wingbeat frequency of the Adelie penguin. The relation between wingbeat frequency and diving depth was that the frequency ranged from 1.5-Hz to 3.0-Hz when the penguins dive in water shallower than 30-m and was over 2.5-Hz in water deeper than 50-m. The acceleration data logger is a powerful tool to estimate kinematic parameters of free-range marine animals.},
 pages = {95--100},
 title = {Analysis of diving behavior of Adelie penguins using acceleration data logger},
 volume = {13},
 year = {2000}
}