Average rating
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
Your vote was cast
Thank you for your feedback
Thank you for your feedback
Date
1973
Metadata
Show full item recordAbstract
In this paper, an Ocean Wave Recorder developed by the Japan Hydrographic Department is described. The instrument is essentially a Froude’s type wave pole, combined with a step resistance wave recorder, and is designed for the purpose of measuring large oceanic waves on the high sea. The seawater forms a part of electric circuit and the change of water level corresponds linearly to that of the electric current intensity. The latter is converted into the frequency change of 1.0-2.0 kHz and recorded on a magnetic tape in the instrument. It is also possible to monitor the operation on board a ship by means of cable. Furthermore, a wave analyser for processing the data by the instrument has been also developed. This wave analyser computes automatically the H-mean, H-1/3 and H-1/10 from the magnetic tape. Field observations using this instrument has been carried out several times and the results are satisfactory for the most part.Journal
Report of Hydrographic and Oceanographic ResearchesIssue/Article Nr
8Page Range
pp.51-65Resource/Dataset Location
https://www1.kaiho.mlit.go.jp/GIJUTSUKOKUSAI/KENKYU/report/rhr08/rhr08-02.pdf