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Volume 18 (1962)
- Issue 4 Pages 167-
- Issue 3 Pages 107-
- Issue 2 Pages 49-
- Issue 1 Pages 1-
Volume 18, Issue 3
Displaying 1-7 of 7 articles from this issue
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Setsuo OKUDA1962 Volume 18 Issue 3 Pages 107-110
Published: October 31, 1962
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSAfter the closing of outlet of estuary, river water alternates with sea water and the salinity in closed lake decreases rapidly, but the salt released from the lake bottom continues to affect the salinity distribution for a long period.
The effect of released salt from the lake bottom on the salinity distribution in lake water was estimated theoretically on the grounds of diffusion equation. The results of theoretical analysis show close agreement with the tendency of the salinity observed in Kojima lake.View full abstractDownload PDF (555K) -
Fukutaro SHINJI1962 Volume 18 Issue 3 Pages 111-114
Published: October 31, 1962
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSThe 500 mb height difference seems to be closely related to the sea surface water temperature in the sea east of Japan. For example, in summer, the correlation coefficient between 500 mb height difference (60°-40°N, 150°E) and sea surface water temperature has a value of -0.70. And the coefficient between the sea surface water temperature in summer and 500 mb height difference (60°-40°N, 150°E) in the previous autumn has value of +0.48 (+0.70, if the value of 1961 is excluded). Besides, there seems to be a cyclic fluctuation with a period of nearly five years in the 500 mb height difference (50°-30°N, 140°-180°E mean) and also in the sea surface water temperature.View full abstractDownload PDF (628K) -
Tosio NAN'NITI, Sozaburo KOIZUMI, Hideo USUI1962 Volume 18 Issue 3 Pages 115-116
Published: October 31, 1962
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSDownload PDF (2233K) -
Tsuneo FURUHATA1962 Volume 18 Issue 3 Pages 117-129
Published: October 31, 1962
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSThe processing of analog-type data obtained from phenomena exhibiting complex wave patterns, was performed manually in the past. The processing of large quantities of data required an expenditure of considerable time and labor. There also existed an insurmountable limitation in the speed of processing. This condition offers many disadvantages especially when a prediction of the future state of the system, based on the information contained in the data, is required. Thus, automatic processing, based on electronic data processing methods, has been developed in order to increase the processing speed and to reduce the number of man-hours within the limited time available.
The automatic data processing machine, MERIAC-1-F, is an electronic computer for Fourier analysis designed to cope with diverse situations which can arise in the routine observations of ocean waves. Its operating principles and design are described in this article. MERIAC-1-F can be used as an information machine, and it can also perform integrated data processing.View full abstractDownload PDF (6640K) -
Tsuneo FURUHATA1962 Volume 18 Issue 3 Pages 130-140
Published: October 31, 1962
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSIt is necessary to solve hard problems in order to produce a rigid and stable wave recorder suitable for routine observation. Recently we designed a new wave recorder, MR-Mark III, which is endurable for stormy weather and has high function. This is a wave recorder of pressure type installed on sea bottom, and has been accomplished after experiments for several years.
Our recorder has two features about its function as stated in the following. First, the whole apparatus is constructed as an electronic self-balancing recording system by executing the null-method automatically. Second, we can easily change the magnification of reading on land, i.e., fivefold or tenfold if necessary. From the results of field observation for long period, it is seen that our wave recorder is fit for routine observation of ocean waves on coast, because this recorder is simple, strong and stable and still has good resolution.
As another advantage we can easily convert this instrument into a long period wave recorder (Tsunami-recorder) or a tide gauge of remote type by modifying a part of the hydraulic elements in our underwater unit. The Japan Meteorological Agency has recently installed several automatic tidegauges of the radio type for the purpose of warning of stormy tide. These tide-gauges were constructed by applying our method.View full abstractDownload PDF (11178K) -
Yasushi KITANO, Donald W. HOOD1962 Volume 18 Issue 3 Pages 141-145
Published: October 31, 1962
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSThis study was made to solve the following questions: (1) Which of the three crystal forms of calcium carbonate (calcite, aragonite and vaterite) is produced most predominantly from sea water by inorganic processes. (2) Which of the chemical constituents of sea water has the greatest influence on the polymorphic formation of calcium carbonate? The experimental results show that aragonite alone is favored in sea water media because of the strong influence of magnesium in the water on the crystal formation of calcium carbonate.View full abstractDownload PDF (677K) -
(1) Classification and Description of SpeciesKojo KIHARA, Nobuichi MOROOKA1962 Volume 18 Issue 3 Pages 147-152
Published: October 31, 1962
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSSix strains of marine chitin-decomposing bacteria were isolated from the sea bottom deposits of Kisarazu Coast in Tokyo Bay and studied taxonomically. Effects of sodium chloride and sea water in aq. media on chitin decomposition were investigated.View full abstractDownload PDF (1122K)
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