最新刊期
期 28 ， 1987
- 摘要：Baishakou Tidal Power Plant was built at the mouth of the barrier-lagoon where sand accumulated markedly in the front of the dam. In this paper, distribution characteries of sediments and mineral, erosion and accumulation variation of topography movement of sand acted by wave and transport rate of sand along coast were investigated. Results show that sand accumulation is the result of retransportion and redeposition procceses of sand in this region The main cause is the decrease of ebb tidal current and the increase of wave action since the tidal power plant was built.In order to ensure the safety of the tidal power plant, author suggests to extend appropriately the spur dike.关键词：BAISHAKOU TIDAL POWER PLANT ,EROSION ,ACCUMULATION
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发布时间：2023-04-28 - 摘要：During 1985-1988, characteristics, distributions, genesis and correlation between some geohazards factors were investigated in west part of the northern South China Sea. There are various geohazards factors or unstable factors on sea floor in west part of the northern South China Sea, such as submarine active sand dune, tidal current sand ridge, pockmark, submarine steep-slope and scarp, continental shelf marginal valley, mud flow, submarine erosion and erosional residue hill, buried paleo-channel, buried paleo-lake, buried paleo-delta,marsh-gas and shallow high pressure gas, slump fault and active fault, submarine landslide. According to their locations and hazardous effect, geohazards factors can be divided into two categories:sea floor geohazards and underground geohazards. The former is of geomorphological and geologioal nature, endangering submarine constructions on sea floor. The latter is exclusively of geological nature. Based on the latency and dangerous degree of hazards, each category of geohazards factors could be divided into three types: immediate hazard factors, latent hazard factors and constraint hazard factors. The investigated area can also be divided into various geohazard zones as follows: immediate sea floor hazard zone, latent sea floor hazard zone, immediate sea floor constraint hazard zone, sea floor basically no hazard zone, immediate underground hazard zone, latent underground hazard zone, underground constraint hazard zone and basically no hazard zone.关键词：HAZARD GEOLOGY,WEST PART OF THE NORTHERN SOUTH CHINA SEA
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发布时间：2023-04-28 - 摘要：In this paper, the vertical distribution patterns and fine structures of temperature and salinity in the middle and northern Taiwan Strait is studied based on data obtained with Nansen bottle and CTD system in two special cruises for"upwelling in July and August, 1987. The results show that the vertical distribution patterns of temperature and salinity are simple in this area in summer. For temperature, negative gradient is main in the area; the vertical homogeneous type and intermediate warm water type can only be found at a few stations. For salinity, only two types of vertical distributions, the homogeneous type and the positive gradient type, are found,and the positive gradient type covers almost the whole studied area in July and the vertical homogeneous type is dominant in August. Multi-ladder structure and fine structure phenomena also exist in the vertical distribution of temperature and salinity in the region, and the fine structure of temperature is more developed than that of salinity. For temperature, the appearance frequency of negative gradient layer is very higher than that of positive gradient layer. For salinity, the appearance frequency of negative gradient layer is lower than that of positive gradient layer. Their gradient values,however, are all small, commonly 0.05-0 10℃/m for temperature and 0.05-0.10/m for salinity. Their appearance frequency lowers rapidly with the increase of the gradient value. The thickness of positive (or negative)gradient layer of temperature and salinity is small in summer. Almost 75% of the gradient layers are 0.1-0.6 m thick.关键词：VERTICAL DISTRIBUTION PATTERNS,FINE STRUCTURES ,TEMPERATURE AND SALINITY, MIDDLE AND NORTHERN TAIWAN STRAIT
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发布时间：2023-04-28 - 摘要：Measurements of echolocation signals of three finless black porpoises bred in a stream near the seashore show that finless black porpoises can emit not only high frequency pulse but also low frequency pulse. During the course of experiment, five different kinds of low frequency pulse and four different kinds of high frequency pulse were recorded. Oscillogram and spectrum were presented after these sound signals were analysed in laboratory. It was also found that the high frequency signals had a maximum energy between 60 and 70kHz which is much higher than echolocation signal of N. phocaenoides reported by Purves et al., yet the peak energies of low frequency pulses are different from each other. The time intervals between two successive pulses in a pulse train were found to be highly variable, the pulses of intervals from 4 μs to 9 μs account for about 62.4%. The sound presure levels of the echolocation signals in reference to 1 m distance in front of the animals’ rostrums were in general between 104dB and 107dB re. 1 μPa(0dB=1 μPa )and closely associated with animals' speed. The faster the speed, the higher the sound presure levels.关键词：ACOUSTIC SIGNALS,FINLESS BLACK PORPOISES ,NEOPHOCAENA PHOCAENOIDES
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发布时间：2023-04-28 - 摘要：1. The sexes of Limnoria are separate. The development of Limnoria tripunctata Menzies is direct, without any pelagic larval stage. The whole breeding process includes dispersal migration, copulation, development of embryo and larval hatching. 2. According to morphological changes, the life history of Limnoria tripunctata Menzies may be divided into following five stages: (1)embryonic development stage, (2)banana larva stage, (3)red-ege larva stage, (4)six-pair peraopod larva stage, (5)adult stage. The gribbles pass for the first three stages in brood pouch and live in burrows in the last two stages. 3. Although we may find the gravid female every month, but it does not mean reproduction all the year round. The newly hatching larvae were observed only in March under natural conditions. The breeding season of Limnoria tripunctata Menzies in the Qingdao harbor is from March to November, with a peak in April to July. 4. A total of 107 gravid females was examined. The number of eggs carried by a single gravid female vary from 3 (the least )to 21(the most). Most of the gravid female carried the eggs in number of 5-9 and 12-16 with the percentage of 44.8 and 32.7 respectively.关键词：BREEDING HABITS,LIMNORIA TRIPUNCTATA MENZIES ,QINGDAO HARBOUR
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发布时间：2023-04-28 - 摘要：This paper is based on the materials collected from the East China Sea in May-July 1978.Vertical hauls were made with a closing conical net, mouth opening 80 cm and silk cone of gauze with 15 meshs per cm. Samples were obtained down to a depth of 2000 m. The layers sampled were: 0--50, 50-100, 100-250, 250-500, 500--1000, 1000-2000 m. Forty-two species of Medusae, sixteen species of Pteropoda and Heteropoda and ten species of Thaliacea were identified. Among them, Muggiaea atlantica, Aglaura hemistoma, Bassia bassensis. Chelophyes contorta, Liriope tetraphylla, Creseis acicula, C. virgula, Thalia democratica and Doliolum denticulatum are relatively dominant. They are distributed mainly to the south of lat, 31°N，but also found up to lat,31°-32°30′N. Studies on the vertical distribution of the zooplankton showed that both the total abundance and the number of species decreased with increase in depth. Their maximum abundance is in the upper 100 m. They are rare or abson below 500 m.关键词：VERTICAL DISTRIBUTION,MEDUSAE, PTEROPODA, HETEROPODA, THALIACEA ,EAST CHINA SEA
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发布时间：2023-04-28 - 摘要：This paper is an attempt to get the food chain structure of Japanese Spanish mackerel,Scomberomorus niphonius (Cuvier et Valenciennes), in the Bohai Sea. The major part of samples were obtained from investigation of fishery resource in Bohai Sea from 1982 to 1984. The stomach content of Japanese Spanish mackerel and the important food species were analized grade by grade. The parameters including weight percentage, number percentage and frequency were used to compare the importance among the food items. The important food species.in every trophic level were obtained from stomach-content data. These species constitute the food chain structure of Japanese Spanish mackerel which includes four trophic levels. The changes of food chain structure between Summer (May to Augest)and Autumn (September to November) were discussed. The conclusion was reached that the structure in Autumn is most complicated. The mean trophic level of the important species were evaluated with the method developed by Odum and Heald. Japanese Spanish mackerel whose mean trophic level is 4.2 occupied the highest trophic level of the food chain, and the mean trophic levels of others are:carnivore 3.1-3.3, plankton,2.0-2. 9, phytoplanton 1.0.关键词：FOOD CHAIN STRUCTURE,JAPANESE SPANISH MACKEREL ,BOHAI SEA
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发布时间：2023-04-28 - 摘要：The present paper deals with two new species of digenetic trematodes collected from sciaenoid fishes, belonging separately to Acanthocolpidae Luhe, 1909 and Hemiuridae (Looss,1899)Luhe,1901. Excepting ova in micron, all the measurements are in millimeter.The type specimens are deposited at the Institute of Oceanology, Academia Sinica.关键词：DIGENETIC TREMATODES,FISHES FROM THE EAST CHINA SEA,SCIAENOID FISHES
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发布时间：2023-04-28 - 摘要：Fourteen species, of digenetic trematodes were obtained from fishes collected from Changjiang River estuary. Among them, two species belonging to Hemiuridae are new to science. All the measurements are in millimeter, except the ova in micron. The type specimens are deposited in the Institute of Oceanology, Academia Sinica, Qingdao.关键词：DIGENETIC TREMATODES ,FISHES FROM THE CHANGJIANG RIVER ESTUARY
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发布时间：2023-04-28 - 摘要：The paper presents descriptions of three new species of cheilostome bryozoans collected from the costs of Shandong and Zhejiang Provinces. The holotypes of the new species are deposited at the Institute of Oceanology, Academia Sinica. The descriptions are given below.关键词：CHEILOSTOME BRYOZOANS,THE COASTS OF SHANDONG AND ZHEJIANG PROVINCES
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发布时间：2023-04-28 - 摘要：While working on the benthic polychaetous annelides from the Jiaozhou Bay (in Shandong), Wutong Bay(near Xiamen )and Dongshan Bay (in Fujian coast),a new species (Pilargiidae: Synelmis )was found. A total of 37 specimens were studied. Holotype and paratype of the new species are deposited in Institute of Oceanology, Academia Sinica. Description of the new species is as follows.关键词：SYNELMIS,OFFSHORE WATERS OF CHINA
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发布时间：2023-04-28 - 摘要：Jiaozhou Bay, facing the Yellow Sea,is situated in south of the Shandong Peninsula.The research of polychaeta of this region was began 30 years ago. 132 spedies of polychaeta were already reported by various authors in the past. years.The precent paper reports 81 species of polychaeta (with asterisk) which have never been reported for this region, including 23 species recorded for the first time from China waters. Up to date, a total of 213 species was reported from the Jiaozhou Bay(see the list).关键词：NEW RECORDS,POLYCHAETA ,JIAOZHOU BAY
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发布时间：2023-04-28 - 摘要：The present paper deals with 32 species of Nudibranchia belonging to the 17 genera, 14 Familiea. The material for study was based on the collections made by the Institute of Oceanology,Academia Sinica in the past years and the Zhejiang Fisheries College during the period 1961-1985 from the littoral and sublittoral zone along the Zhejiang coast. Of these, I species is new to science and 6 species are recorded for the first time from the coasts of China. The Nudibranchia fauna of the Zhejiang coast may be grouped as follows.关键词：NUDIBRANCHIA ,ZHEJIANG COAST
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发布时间：2023-04-28 - 摘要：The present paper dealing with the species of the Family Limidae of the China Sea is based upon the collection made by the Institute of Oceanology, Academia Sinica during the period from 1950-1978. A total of 13 species belonging to 5 genera are identified and described. Of which, one species is new to science, 6 species are recorded for the first time from Chinese waters.关键词：FAMILY LIMIDAE,WATERS OFF CHINA
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发布时间：2023-04-28 - 摘要：The present paper deals with 14 species, belonging to 3 genera of Cuspidariidae, collected from the sublittoral and archibenthal zone of the Chinese Waters. 13 species are recorded for the first time from Chinese Waters. Two species, Pseudoneaera semipelacida and Cardiomya tosaensis, are found only in the Yellow Sea occupied by the cold water mass. For the East China Sea 9 species are Known,Cuspidaria nobilis, C. macrorhynchus, C steindachneri C. caduca, C. japonica ,C.okezoko ,C.kawamurai, Cardiomya sinica and C. reticutata. A total of 7 species, Cuspidaria caduca,C.macrorhynchus, C steindachneri, C. japonica, C. corrugata, C. prolatissima and Cardiomya singaporensis are recorded for the South China Sea.关键词：SEPTIBRANCHIA,CHINESE WATERS ,CUSPIDARIIDAE
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发布时间：2023-04-28 - 摘要：The Bivalvia trawled by R/V"Jinxing "and"Science I” in the East China Sea from outer continental shelf to bathyal deep during June-July 1978 and August 1981 comprise 27 species.Among them 8 species namely Nuculana (Thesyleda) tanseimaruae, Malletia conspicua, Lucinoma yoshidai,Isoconcha sibogai, Cardita nodulosa, Lyonsia oahuensis, Cuspidaria approximate,and Cardiomya alcocki have never been reported in this area.关键词：BIVALVIA, DEEP-WATER AREA OF THE EAST CHINA SEA
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发布时间：2023-04-28 - 摘要：The present paper deals with 15 species of cumaceans, belonging respectively to 6 families and 13 genera, from the northern Chinese coasts. Of which 3 species are new to science and 6 are recorded for the first time from the Chinese waters. The type specimens of the new species are deposited in the Institute of Oceanology, Academia Sinica, Qingdao. The following is the list of the 15 species and the descriptions of the new species, Those marked with an asterrisk are recorded for the first time from China.关键词：CUMACEA(CRUSTACEA MALACOSTRACA) ,OFFSHORE WATERS OF NORTH CHINA
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发布时间：2023-04-28 - 摘要：This is the second part of our study on Chinese Palaemoninae. dealing with species belonging to the Genera Palaemon, Exopalaemon, Palacmonetes and Leptocarpus. In the present study,a total of 42 species have been found from marine, brackish water and freshwater areas of China. Of which 21 species of the Genus Macrobrachium, 2 species of Leander and one species of Leandrites were described in the first part of the Report. Among the 18 species reported in this paper, Palaemon gravieri (Yu) is endemic to shallow waters of the Bohai Sea, the Yellow Sea and the western part of the East China Sea, and is of economic importance;P. tenuidactylus sp. nov. has been found only in brackish waters of the river mouths along the eastern and the northern coasts of China and possibly the western coast of Korea; P. paucidens is a temperate species limited to waters of Siberia, northern China and Japan; P. pacificus,P.concinnus,p.sewelli and P serrifer are wide distributed in the warm waters of Indo-West-pacific, while P. ortmanni and P macrodacrylus have been found in China, Korea and Japan. The four species belonging to Genus Exopalaemon are of special importance in the coastal and freshwater fisheries of China.E. carinicauda is the most importance economic species of caridean shrimps in coastal areas of low salinity and estuaries, particularly in north China. E.orientis is common in eastern and southern China. E. annandalei dominates estuarine and neighbouring freshwater areas in northern and eastern China, and E. modestus, also an important economic species, is limited to freshwater lakes and rivers in north-eastern, northern and eastern China. The 3 species of Palaemonetes are also economic importance and abundantly found in freshwater ponds, lakes and brooks.关键词：PALAEMONINAE(CRUSTACEA DECAPODA), PALAEMON, EXOPALAEMON, PALAEMONETES, LEPTOCARPUS
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发布时间：2023-04-28 - 摘要：The recent sedimentation rates and sediment flux based on 210Pb activity of five sediment cores in the Liaodong Bay have been determined. 210Pb dating shows that the low rate of sedimentation is about 0.068 cm/a and the high rate of sedimentation is about 1.39 cm/a. The flux of sediment is from 0.082 to 1.60 g/(cm2.a).210Pb distribution, which is controlled by material source and hydrographic condition,is reflective of the sedimentation and the sedimentary envi-ronments in the last hundred years. Using the 210Pb dating, the sedimentation rates and material source in the Liaodong Bay have been discussed.关键词：RECENT SEDIMENTATION RATES ,SEDIMENT FLUX,LIAODONG BAY
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发布时间：2023-04-28
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