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Die horizontale Verteilung der Planktondiatomeen im Golf von Neapel
572
Oceanographic Abstracts
STROGANOV N. S. and L. V. KOLOSOVA1962. The effect of nylon production sewage upon aquatic organisms. Zool. Zh. Akad. Nauk, SSSR, 41 (1) : 24-33. The main component of sewage in nylon production is AH-salt (adipic acid hexamethylendiamine) causes a diverse effect upon fish, molluscs and Cladocers. This action disturbs vital functions of the organism (feeding, growth, moult, maturation, reproduction, fecundity). Therefore the determination of the sublethal salt concentration by the survival of the adults is insufficient. On the basis of reproduction intensity and fecundity of daphnia over seven-eight generations the author determined the sublethal salt concentration to be of 0.1 mg/l. VERMA G. R. and J. B. KELLER 1962. Three-dimensional standing surface waves of finite amplitude. The Physics of Fluids, 52-56. Three-dimensional gravity waves on the surface of an inviscid incompressible fluid of finite depth are considered. The waves are assumed to be periodic in time and in two perpendicular horizontal directions. The surface profile, potential function, pressure, and frequency of the motion are determined (to second order) as series in powers of the amplitude divided by the wavelength in one direction. As in the two-dimensional case previously considered by Tadjbakhsh and Keller, it is found that the frequency increases with amplitude for depths less than a critical vatue and decreased with increasing amplitude for greater depths. The critical depth depends upon the wavelengths in the two horizontal directions. The three-dimensional results do not reduce to the two-dimensional ones when one of the wavelengths becomes infinite. This is because the motion remains three dimensional. WALDEN H. 1961. Proposal for collecting ocean wave records obtained u n d e r ' ideal ' conditions.
Dtsch. Hydrogr. Z. 14 (2): 55-56. With a view to ascertain the real (correct) one-dimensional ocean wave spectrum it is proposed to pay special attention to such records as can be obtained under simple, or say ' ideal ' and clearly defined conditions of growing. WALDEN H. and R. H6HN 1961. giber den Ursprung der ' R o l l e r ' vor Ascension. Dtsch.
Hydrogr. Z. 14 (4): 152-158. On the origin of the rollers off the Island of Ascension. From weather maps the days are computed on which during the period from 1943 to 1954 high swell waves from the northern North Atlantic were expected to occur. These computed ' arrival dates ' are confronted with the days on which rollers were observed near the shore of Ascension. The result of these investigations leads to the conclusion that part of the rollers were produced in the storm area of the North Atlantic. It seems that the swell waves off the Island of Ascension arrived somewhat earlier than they were expected to do according to the diagram used. WATANABE K. 1961. On the theory and technique of an easy method of wide range photogrammetry for the observations of sea ice distribution. Oceanogr. Mag., 12 (2): 77-121. Repr. in: Bull. Hakodate Mar. Obs., 8: 77-121. There is a necessity of oblique photogrammetry over an area as wide as possible in the aerial observations of oceanographic phenomena widely spready on the sea surface, like the distributions of sea ice, sea wave, current rip, slicks on the ocean and the like. The present paper is an attempt to give the theory and technique of an easy method satisfying that necessity, by describing the method of photogrammetry of sea ice distributions being used in the aerial sea ice reconnaissance for the southwestern region of the Okhotsk Sea since 1957. Furthermore, is presented an example of its application to mapping the distributions of sea ice and cloud from the photographs taken by the United States weather satellite TIROS-I. WAWgIK F. 1961.
Die horizontale Verteilung der Planktondiatomeen im Golf von Neapel.
Int. Rev. Ges. Hydrobiol. 46 (3): 460-479. Vom Januar bis Juni 1957 wurde an sechs verschiedenen Stationen des Golfes yon Neapel Phytoplankton aus 10 na Tiefe auf seine Diatomeenvegetation (Artenzahl, Volksdichte, Biomasse) und die wichtigsten Begleitorganismen untersucht. Von der Kiiste zur Bocca nimmt die pelagische Diatomeenbesiedlung wegen des N~ihrstoffgef~illes auf dieser Strecke wesentlich ab. In den sechs Statior.en bestanden zeitlich undSrtlich wecbselnde Volksdichten der Plankton-diatomeen. Zum Tell sind diese Verh~iltnisse durch StrOmungs-, Gezeiten- und Windwirkung verursacht.
Oceanographic Abstracts
STROGANOV N. S. and L. V. KOLOSOVA1962. The effect of nylon production sewage upon aquatic organisms. Zool. Zh. Akad. Nauk, SSSR, 41 (1) : 24-33. The main component of sewage in nylon production is AH-salt (adipic acid hexamethylendiamine) causes a diverse effect upon fish, molluscs and Cladocers. This action disturbs vital functions of the organism (feeding, growth, moult, maturation, reproduction, fecundity). Therefore the determination of the sublethal salt concentration by the survival of the adults is insufficient. On the basis of reproduction intensity and fecundity of daphnia over seven-eight generations the author determined the sublethal salt concentration to be of 0.1 mg/l. VERMA G. R. and J. B. KELLER 1962. Three-dimensional standing surface waves of finite amplitude. The Physics of Fluids, 52-56. Three-dimensional gravity waves on the surface of an inviscid incompressible fluid of finite depth are considered. The waves are assumed to be periodic in time and in two perpendicular horizontal directions. The surface profile, potential function, pressure, and frequency of the motion are determined (to second order) as series in powers of the amplitude divided by the wavelength in one direction. As in the two-dimensional case previously considered by Tadjbakhsh and Keller, it is found that the frequency increases with amplitude for depths less than a critical vatue and decreased with increasing amplitude for greater depths. The critical depth depends upon the wavelengths in the two horizontal directions. The three-dimensional results do not reduce to the two-dimensional ones when one of the wavelengths becomes infinite. This is because the motion remains three dimensional. WALDEN H. 1961. Proposal for collecting ocean wave records obtained u n d e r ' ideal ' conditions.
Dtsch. Hydrogr. Z. 14 (2): 55-56. With a view to ascertain the real (correct) one-dimensional ocean wave spectrum it is proposed to pay special attention to such records as can be obtained under simple, or say ' ideal ' and clearly defined conditions of growing. WALDEN H. and R. H6HN 1961. giber den Ursprung der ' R o l l e r ' vor Ascension. Dtsch.
Hydrogr. Z. 14 (4): 152-158. On the origin of the rollers off the Island of Ascension. From weather maps the days are computed on which during the period from 1943 to 1954 high swell waves from the northern North Atlantic were expected to occur. These computed ' arrival dates ' are confronted with the days on which rollers were observed near the shore of Ascension. The result of these investigations leads to the conclusion that part of the rollers were produced in the storm area of the North Atlantic. It seems that the swell waves off the Island of Ascension arrived somewhat earlier than they were expected to do according to the diagram used. WATANABE K. 1961. On the theory and technique of an easy method of wide range photogrammetry for the observations of sea ice distribution. Oceanogr. Mag., 12 (2): 77-121. Repr. in: Bull. Hakodate Mar. Obs., 8: 77-121. There is a necessity of oblique photogrammetry over an area as wide as possible in the aerial observations of oceanographic phenomena widely spready on the sea surface, like the distributions of sea ice, sea wave, current rip, slicks on the ocean and the like. The present paper is an attempt to give the theory and technique of an easy method satisfying that necessity, by describing the method of photogrammetry of sea ice distributions being used in the aerial sea ice reconnaissance for the southwestern region of the Okhotsk Sea since 1957. Furthermore, is presented an example of its application to mapping the distributions of sea ice and cloud from the photographs taken by the United States weather satellite TIROS-I. WAWgIK F. 1961.
Die horizontale Verteilung der Planktondiatomeen im Golf von Neapel.
Int. Rev. Ges. Hydrobiol. 46 (3): 460-479. Vom Januar bis Juni 1957 wurde an sechs verschiedenen Stationen des Golfes yon Neapel Phytoplankton aus 10 na Tiefe auf seine Diatomeenvegetation (Artenzahl, Volksdichte, Biomasse) und die wichtigsten Begleitorganismen untersucht. Von der Kiiste zur Bocca nimmt die pelagische Diatomeenbesiedlung wegen des N~ihrstoffgef~illes auf dieser Strecke wesentlich ab. In den sechs Statior.en bestanden zeitlich undSrtlich wecbselnde Volksdichten der Plankton-diatomeen. Zum Tell sind diese Verh~iltnisse durch StrOmungs-, Gezeiten- und Windwirkung verursacht.