TOLEX-ADCP monitoring

Kimio Hanawa, Yasushi Yoshikawa, Takeshi Taneda

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Since February 1991, the Physical Oceanography Group, Tohoku University has conducted a program to monitor the oceanic current field across the Kuroshio over the Izu Ridge, south of Japan, using the Acoustic Doppler Current Profiler (ADCP) system installed on the ferry Ogasawara Maru. This ferry shuttles 58 times in a usual year between Tokyo and Chichijima in the Ogasawara (Bonin) Islands. This ADCP monitoring is regarded as one component of the Tokyo-Ogasawara Line Experiment (TOLEX). In this paper, we will briefly describe our ADCP system and data processing procedures, and will present several aspects of the current fields using the data obtained through January 1996. During the period, the Kuroshio took the bimodal paths of 34°N and 32°30'N as mean positions on the ship course. In the sea south of the Kuroshio, many cyclonic and anticyclonic eddies with a scale of 200-400 km in diameter were observed with passing time of two-four months.

Original languageEnglish
Article number96GL02306
Pages (from-to)2429-2432
Number of pages4
JournalGeophysical Research Letters
Issue number18
Publication statusPublished - 1996 Jan 1

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)


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