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Volume 27 (1971)
- Issue 6 Pages 233-
- Issue 5 Pages 191-
- Issue 4 Pages 137-
- Issue 3 Pages 81-
- Issue 2 Pages 43-
- Issue 1 Pages 1-
Volume 27, Issue 3
Displaying 1-7 of 7 articles from this issue
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Louis I. GORDON, P. Kilho PARK, Stephen W. HAGER, Timothy R. PARSONS1971 Volume 27 Issue 3 Pages 81-90
Published: 1971
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSObservations were made of time variations of the carbon dioxide partial pressures (PCO2) of the atmosphere and surface sea waters in the Pacific subarctic region. Data were obtained on a cruise of the USC & GSS SURVEYOR in October, 1968 and on the TRANSPAC expedition of the CNAV ENDEAVOUR in March-April, 1969. A rise in surface water PCO2 of 18 ×10-6 atm occurred in a period of 30-45 days in March-April due principally to spring warming of surface waters. An average increase of 60 ×10-6 atm occurred between October, 1968 and March, 1969 as a result mainly of cessation of summer phytoplankton production and the onset of winter-storm-driven vertical mixing. Because the air-sea PCO2 gradient not only changed appreciably in magnitude but also changed sign, there are important implications for calculations of air-sea exchange of carbon dioxide on the ocean wide scale.View full abstractDownload PDF (1499K) -
Rinnosuke FUKAI, Lang HUYNH-NGOC1971 Volume 27 Issue 3 Pages 91-101
Published: 1971
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSSilver determinations in the sea-water around Monaco were carried out using a procedure consisting of preconcentration of silver with lead sulfide, followed by dithizone extraction and spectrophotometric mono-colour measurement of silver-dithizonate.
The average concentration of silver in the surface sea-water around Monaco was found to be 0.14%mu;g Ag/l. It was also concluded that observed variations of silver content in seawater were not related to the fresh water run-off from the neighbouring coast. This suggests that the variations have to be attributed to some other factor or a combination of factors.
On the basis of the observed values of the silver content of the Var River water, an upper limit of silver supply by fresh waters into the sea-area around Monaco is estimated to be 2.3μg Ag per liter of fresh water. Considering the mixing of the fresh water with seawater, an increase of up to 0.09μg Ag/l in the sea-water might be expected. The fact that the increase of silver in the sea-water was not observed in connection with the fresh-water mixing suggests that some effective removal process of silver may be in operation at the immediate vicinity of the injection of fresh-water into the sea.View full abstractDownload PDF (1811K) -
Noriyuki IWATA1971 Volume 27 Issue 3 Pages 102-108
Published: 1971
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSTwo-dimensional ocean wave spectrum developing under the atmospheric surface pressure fluctuations is linearly correlated with that of wind pressure itself, so that angular distribution of energy of ocean surface waves can be determined by directional properties of surface pressure fluctuations with the same frequency to the surface wave.
From empirically determined spectral formula of the atmospheric surface pressure fluctuations the coefficients of Fourier series expanded around mean direction of wind are analytically integrated, from which r.m.s. angular distribution, spectral peakedness and longcrestedness are calculated, compared with previously proposed empirical formulae and observations carried out by ultrasonic current meter.View full abstractDownload PDF (718K) -
Akio MAEDA1971 Volume 27 Issue 3 Pages 109-115
Published: 1971
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSTemperature field in the vicinal area of station T (29°N, 135°E) before and after Typhoon 6411 in summer 1964 is analysed from measurements with BT. At a location 68 km distant from the path of the typhoon, temperature at each depth became lower in the upper layer from surface to 50 m deep and became higher in the lower layer from 50 m to 130 m deep in connection with passage of the typhoon than temperature at each depth in these layers before the typhoon, respectively. Heat loss in the upper layer and heat gain in the lower layer are estimated to be almost comparable in amount. Equivalence in the heat gain and loss suggests that temperature changes were caused by vertical mixing due to strong wind of the typhoon. At a location 164 km distant from the path of the typhoon, however, heat gain of the lower layer from 35 m to 250 m deep exceeded heat loss of the upper layer from surface to 35 m deep. In addition to vertical mixing, horizontal advection or some other processes should be taken into account in order to explain the temperature changes in the area a little distant from the typhoon path. For recovery of the temperature changes at these locations 8 days were needed. This recovery time is almost equal to those in the case of some other typhoons, about which the discussion was made in the previous paper (MAEDA, 1965).View full abstractDownload PDF (1193K) -
Masahiro ENDOH1971 Volume 27 Issue 3 Pages 116-120
Published: 1971
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSResponse of an unbounded two-layer ocean to traveling atmospheric disturbances is analytically investigated. Under the assumption that (1) lower layer is motionless, (2) each layer is homogeneous and in hydrostatic balance, (3) the Coriolis parameter is constant, and (4) the density difference between the two layers is small compared to the density itself, the one-dimensional Klein-Gordon's equation is solved analytically for both the divergent and rotational wind stress. Numerical examples of the wake pattern of the upwelling behind the regional divergent and rotational wind fields are also represented.
The results may be summarized as follows:(1) the effect of the divergent wind stress is dominant when the forced Rossby number R0 (the ratio of the frequency of the wind stress to the Coriolis parameter) is larger than unity unless the Mach number M (the ratio of the traveling velocity of the wind stress to the internal gravitational velocity) is far less than unity, (2) the effect of the rotational wind stress is important, when the forced Rossby number R0 is less than unity.View full abstractDownload PDF (737K) -
Shun-ei ICHIMURA1971 Volume 27 Issue 3 Pages 121-127
Published: 1971
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSDownload PDF (1730K) -
Yoshio IWABUCHI1971 Volume 27 Issue 3 Pages 128-135
Published: 1971
Released on J-STAGE: June 17, 2011
JOURNAL FREE ACCESSDownload PDF (1184K)
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