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Sedimentation in Milford sound
1052
Oceanographic Abstracts
OMORI MAgOTO, 1965. A new species ofEuchirella (Copepoda) from Sagami Bay, Middle Japan. J. oceanogr. Soc., Japan, 21 (2) : 60-65. A new species o f calanoid copepod, Euchirella tanseii n. sp., is described from the bottom living crustacean collections made by the R V Tansei Maru in Sagami Bay. A female o f the species was obtained in bottom net hauls taken on a sandy and gravelly substrate at a depth of 100 m. The species closely resembles Euchirella venusta GIESBRECHT and E. pulchra (LoaaOCK), but can be distinguished by the shape of the genital segment and the number of setae on the 2rid segment ofendopodite o f the 2nd antenna. The comparison of systematical characters with these species is attempted.
OMORI MAKOTO, 1965. The distribution in the Bering Sea and the northern North Pacific as observed by high-speed sampling of the surface waters, with special reference to the copepods. J. oceanogr. Soc., Japan, 21 (1): 18-26. A series of zooplankton samples was obtained by high-speed sampling at the surface, in the Bering Sea and northern North Pacific during a cruise o f the Oshoro Maru from June to August 1960. The average zooplankton biomass in all samples was 390 g/l,000 mawet weight. Very highvalues were obtained in the northern Gulf o f Alaska (1,169 g/l,000 m 3) and south of the Aleutian Islands (888 g/1,000 m3). Thirty-nine species o f copepods were identified from the samples. The area investigated could be divided into three regions by the copepod distribution: (1) the cold offshore water region characterized by a Calanus plumchrus-C, cristatus population, (2) the warm offshore water associated with Calanus pacificus and several warm oceanic species, (3) the neritic water mass represented by a Pseudocalanus minutus-Acartia longiremis population. The relationships between the total numbers of zooplankton and phytoplankton organisms suggest that in the offshore region the phytoplankton population is grazed upon by the zooplankton within a considerably short period, resulting in a poor standing crop, while sufficient phytoplankton is available in the neritic region because of less active feeding of neritic species. OZM1DOV R. V. and A. D. YAMPOLSKY,1965. Some statistical characteristics o f velocity and density oscillations in the ocean. (In Russian; English abstract). Fisika, Atomsferi i Okeana, Izv., Akad. Nauk, SSSR, 1 (6): 615-622. Spectrum and coherence for velocity and density oceanic fields were calculated. For this purpose synchronous observations obtained during a two week period at three points in the North Atlantic wereused. Thepoints were located at apices o f a r e c t a n g u l a r triangle with nearly 130, 170 and 210 k m sides. For certain frequency intervals the velocity spectra E ( k ) were described by " 5 / 3 degree '" law, for higher frequencies the spectra are approximately constant. The spectrum ofisopykns vertical oscillations as well as coherence between various data series has a maximum near tidal and inertia frequencies. PANIFILOVA S. G., 1965. Peculiarities of T and S ~ distribution the N o r t h Pacific Waters. (In Russian; English Abstract). Okeanolog. Issled. Rezult. Issled. Programme Mezhd. Geofiz. Gods. Mezhd. Geofiz. Komitet Presidiume Akad. Nauk. SSSR, No. 13 : 47-54. Water temperature and salinity distribution charts and hydrological sections of the Pacific Ocean for February and August are reported here. They are largely based on new data and are characterized by greater detail. General averages in time and space for characteristics are considered. PANTIN H. M., 1964. Sedimentation in Milford Sound. New Zealand Dept. Sci. Ind. Res., Bull., No. 157: New Zealand Oceanogr. Inst., Memoir, No. 17: 35-47. The sediments of Stifling Basin consist of sandy silt interspersed with layers of coarse sand. Most of these layers are not more than 1-2 in. thick, but one core penetrated a much thicker sand layer, nearly 5 ft thick. The sediments consist principally o f hornblende, plagioclase, and mica (derived from the gneissic country rocks), together with numerous plant fragments. The sandy silt contains multigranular aggregates o f two types, one type being smooth ellipsoidal faecal pellets and the other irregular masses cemented with gypsum. This gypsum probably arose as a result o f alternating reduction and oxidation of sulphur within the sediment. The silt fraction of the sandy silt is transported principally by stream outflow, while the sand fraction is supplied by wind transport from the cliffs bordering the Sound and by the rafting effect of plant fragments. The coarse sand layers are evidently due to the periodic slumping of submarine deltas and alluvial cones flanking Stirling Basin. The thick sand layer in the lower laart of Core A 321 is provisionally correlated with a period of heavy seismic activity in the years 1826--27. On this basis, the rate of accumulation o f sandy silt would be about ½ in. oer year. The sediments of Entrance Sill and Entrance Basin are briefly described and discussed. PATIL M. R., C. P. RAMAMIRTHAM, P. UDAYA VARMA, C. P. ARAVINDAKSHAN NAIR and PER MYRLAND, 1964. Hydrography of the west coast o f India during the pre-monsoon period o f the year 1962. I. Shelf waters o f Maharashtra and sohthwest Sourashtra coasts. J'. mar. biol. Assn., India, 6 (1): 151-166. Systematic hydrographic observations were made during May off the Maharashtra and Southwest
Oceanographic Abstracts
OMORI MAgOTO, 1965. A new species ofEuchirella (Copepoda) from Sagami Bay, Middle Japan. J. oceanogr. Soc., Japan, 21 (2) : 60-65. A new species o f calanoid copepod, Euchirella tanseii n. sp., is described from the bottom living crustacean collections made by the R V Tansei Maru in Sagami Bay. A female o f the species was obtained in bottom net hauls taken on a sandy and gravelly substrate at a depth of 100 m. The species closely resembles Euchirella venusta GIESBRECHT and E. pulchra (LoaaOCK), but can be distinguished by the shape of the genital segment and the number of setae on the 2rid segment ofendopodite o f the 2nd antenna. The comparison of systematical characters with these species is attempted.
OMORI MAKOTO, 1965. The distribution in the Bering Sea and the northern North Pacific as observed by high-speed sampling of the surface waters, with special reference to the copepods. J. oceanogr. Soc., Japan, 21 (1): 18-26. A series of zooplankton samples was obtained by high-speed sampling at the surface, in the Bering Sea and northern North Pacific during a cruise o f the Oshoro Maru from June to August 1960. The average zooplankton biomass in all samples was 390 g/l,000 mawet weight. Very highvalues were obtained in the northern Gulf o f Alaska (1,169 g/l,000 m 3) and south of the Aleutian Islands (888 g/1,000 m3). Thirty-nine species o f copepods were identified from the samples. The area investigated could be divided into three regions by the copepod distribution: (1) the cold offshore water region characterized by a Calanus plumchrus-C, cristatus population, (2) the warm offshore water associated with Calanus pacificus and several warm oceanic species, (3) the neritic water mass represented by a Pseudocalanus minutus-Acartia longiremis population. The relationships between the total numbers of zooplankton and phytoplankton organisms suggest that in the offshore region the phytoplankton population is grazed upon by the zooplankton within a considerably short period, resulting in a poor standing crop, while sufficient phytoplankton is available in the neritic region because of less active feeding of neritic species. OZM1DOV R. V. and A. D. YAMPOLSKY,1965. Some statistical characteristics o f velocity and density oscillations in the ocean. (In Russian; English abstract). Fisika, Atomsferi i Okeana, Izv., Akad. Nauk, SSSR, 1 (6): 615-622. Spectrum and coherence for velocity and density oceanic fields were calculated. For this purpose synchronous observations obtained during a two week period at three points in the North Atlantic wereused. Thepoints were located at apices o f a r e c t a n g u l a r triangle with nearly 130, 170 and 210 k m sides. For certain frequency intervals the velocity spectra E ( k ) were described by " 5 / 3 degree '" law, for higher frequencies the spectra are approximately constant. The spectrum ofisopykns vertical oscillations as well as coherence between various data series has a maximum near tidal and inertia frequencies. PANIFILOVA S. G., 1965. Peculiarities of T and S ~ distribution the N o r t h Pacific Waters. (In Russian; English Abstract). Okeanolog. Issled. Rezult. Issled. Programme Mezhd. Geofiz. Gods. Mezhd. Geofiz. Komitet Presidiume Akad. Nauk. SSSR, No. 13 : 47-54. Water temperature and salinity distribution charts and hydrological sections of the Pacific Ocean for February and August are reported here. They are largely based on new data and are characterized by greater detail. General averages in time and space for characteristics are considered. PANTIN H. M., 1964. Sedimentation in Milford Sound. New Zealand Dept. Sci. Ind. Res., Bull., No. 157: New Zealand Oceanogr. Inst., Memoir, No. 17: 35-47. The sediments of Stifling Basin consist of sandy silt interspersed with layers of coarse sand. Most of these layers are not more than 1-2 in. thick, but one core penetrated a much thicker sand layer, nearly 5 ft thick. The sediments consist principally o f hornblende, plagioclase, and mica (derived from the gneissic country rocks), together with numerous plant fragments. The sandy silt contains multigranular aggregates o f two types, one type being smooth ellipsoidal faecal pellets and the other irregular masses cemented with gypsum. This gypsum probably arose as a result o f alternating reduction and oxidation of sulphur within the sediment. The silt fraction of the sandy silt is transported principally by stream outflow, while the sand fraction is supplied by wind transport from the cliffs bordering the Sound and by the rafting effect of plant fragments. The coarse sand layers are evidently due to the periodic slumping of submarine deltas and alluvial cones flanking Stirling Basin. The thick sand layer in the lower laart of Core A 321 is provisionally correlated with a period of heavy seismic activity in the years 1826--27. On this basis, the rate of accumulation o f sandy silt would be about ½ in. oer year. The sediments of Entrance Sill and Entrance Basin are briefly described and discussed. PATIL M. R., C. P. RAMAMIRTHAM, P. UDAYA VARMA, C. P. ARAVINDAKSHAN NAIR and PER MYRLAND, 1964. Hydrography of the west coast o f India during the pre-monsoon period o f the year 1962. I. Shelf waters o f Maharashtra and sohthwest Sourashtra coasts. J'. mar. biol. Assn., India, 6 (1): 151-166. Systematic hydrographic observations were made during May off the Maharashtra and Southwest