Abstract
An intelligent ADCP (Acoustic Doppler Current Profiler) fish, called “DRAKE” (Depth and Roll Adjustable Kite for Energy flux measurements) was developed with the controllable wings which can adjust the submerging depth of the fish and stabilize its roll motion. The Kuroshio west of Okinawa was measured in a roundtrip course on the same traverse line by the ADCP fish. The forward survey obtained the maximum submerging depth of 208 m at a fish operation speed of 2.9 ms−1. The maximum fish speed of 5.4 ms−1 was achieved at a submerging depth of 48 m in the return survey. The data in the overlapped area of data acquisition between depths 212 and 276 m were used to examine the accuracy of velocity measurement for the towed ADCP system. The summation of both survey data made it possible to estimate a sectional velocity structure and transport of the upper 600 m corresponding roughly to the whole section of the Kuroshio in this region.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Dessureault, J. G. (1976): “Batfish” A depth controllable towed body for collecting oceanographic data.Ocean Eng.,3, 99–111.
Kaneko, A. and W. Koterayama (1988): ADCP measurements from a towed fish.EOS,69, 643–644.
Kaneko, A., W. Koterayama, H. Honji, S. Mizuno, K. Kawatate and R. L. Gordon (1990): Cross-stream survey of the upper 400 m of the Kuroshio by an ADCP on a towed fish.Deep-Sea Res.,37, 875–889.
Kaneko, A., S. Mizuno, W. Koterayama and R. L. Gordon (1992): Cross-stream velocity structures and their downstream variation of the Kuroshio around Japan.Deep-Sea Res.,39, 1583–1594.
Koterayama, W., M. Nakamura, A. Kaneko, Y. Kyozuka, M. Kashiwagi, M. Inada, H. Ishidera and Y. Ito (1990): Towed vehicle “DRAKE” for ocean measurements and its on-situ experiments in the Kuroshio.J. Soc. Naval Architects of Japan,166, 485–495.
Nitani, H. (1975): Variation of the Kuroshio south of Honshu.J. Oceanogr. Soc. Jpn.,31, 154–173.
Takematsu, M., K. Kawatate, W. Koterayama, T. Suhara and H. Mitsuyasu (1986): Moored instrument observations in the Kuroshio south of Kyushu.J. Oceanogr. Soc. Jpn.,42, 201–211.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kaneko, A., Gohda, N., Koterayama, W. et al. Towed ADCP fish with Depth and Roll controllable wings and its application to the Kuroshio observation. J Oceanogr 49, 383–395 (1993). https://doi.org/10.1007/BF02234955
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02234955