Notes Ecological study of macrobenthos in Fuqing Bay     

Li Rongguan  Jiang Jinxiang  Cai Erxi  Xu Huizhou 《海洋学报(英文版)》1995,14(3):447-453

ＮｏｔｅｓＥｃｏｌｏｇｉｃａｌｓｔｕｄｙｏｆｍａｃｒｏｂｅｎｔｈｏｓｉｎＦｕｑｉｎｇＢａｙ￥／／ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｅｃｏｌｏｇｉｃａｌｓｔｕｄｙＯｆｍａｃｒｏｂｅｎｔｈｏｓｈａｓｎｏｔｂｅｅｎｒｅＰＯｒｔｅｄｔｈｏｕｇｈｔｈｅｍａｒｉｎｅ...  相似文献   

渤海湾沿岸泥炭沼泽形成机制与时空分布   总被引：4，自引：0，他引：4  

李汉鼎  王升忠 《海洋地质与第四纪地质》1995,15(2):11-16

渤海湾沿岸的海陆过渡带，优越的水文地理环境有利于泥炭沼泽的形成与发育。海洋海退导致的海岸线变迁，是控制泥炭沼泽发育时间和空间分布的主导因素。间冰期和冰后期的海面上升期间，自海向陆发育了海侵基底泥炭；中全新世高海面期，在山前扇缘洼地和沟谷有泥炭沼泽发育；晚全新世海面下降期，泥炭沼泽主要发育在沿岸的海湾、泻湖、三角洲汊河间洼地及平原上的河滩、阶地、古河道等地。  相似文献   

Relationship between biogeochemical features of biogenic elements and flocculation in the Changjiang Estuary   总被引：1，自引：3，他引：1  

Lin Yi''an  Tang Renyou  Li Yan  Dong Henglin  Guan Xuwei  Chen Yinzu 《海洋学报(英文版)》1995,14(2):225-234

ＲｅｌａｔｉｏｎｓｈｉｐｂｅｔｗｅｅｎｂｉｏｇｅｏｃｈｅｍｉｃａｌｆｅａｔｕｒｅｓｏｆｂｉｏｇｅｎｉｃｅｌｅｍｅｎｔｓａｎｄｆｌｏｃｃｕｌａｔｉｏｎｉｎｔｈｅＣｈａｎｇｊｉａｎｇＥｓｔｕａｒｙ￥ＬｉｎＹｉ＇ａｎ；ＴａｎｇＲｅｎｙｏｕ；ＬｉＹａｎ；Ｄｏ...  相似文献   

Forearc structures and tectonics in the southern Peru—northern Chile Continental Margin     

Chang Li 《Marine Geophysical Researches》1995,17(1):97-113

SeaMARC II side-scan images, bathymetry, and single-channel seismic reflection data along the southern Peru—northern Chile forearc area between 16° and 23° S reveal a complex region of morpho-structural, submarine drainage and depression patterns. In the subducting plate area, the NW—SE trending primary normal fault system represented by trench-paralleled scarps was incipiently formed as the Nazca Plate was bent in the outer edge and further intensified as the plate approached the trench. The NE—SW trending secondary normal fault system that consists of discontinuous and smaller faults, usually intersect the primary trench-paralleled fault system. Similar to the Nazca Plate, the overriding continental plate also shows two major NW—SE and NE—SW trending fault systems represented by fault scarps or narrow elongated depressions.The submarine drainage systems represented by a series of canyon and channel courses appear to be partly controlled by the faults and exhibit a pattern similar to the onshore drainage which flows into the central region of the coastal area. Two large depressions occurring along the middle—upper slope areas of the continental margin are recognized as collapse and slump that perhaps are a major result of increased slope gradient. The subsidence of the forearc area in the southern Peru—northern Chile Continental Margin is indicated by: a) drainage systems flowing into the central region, b) the slope collapse and slumps heading to the central region, c) the deepening of the trench and inclining of the lower slope terrace to the central region, and d) submerging of the upper-slope ridge and the Peru—Chile Coast Range off the Arica Bight area.The subsidence of the forearc area in the southern Perunorthern Chile margin is probably attributed to a subduction erosion which causes wearing away and removal of the rock and sedimentary masses of the overriding plate as the Nazca Plate subducts under the South American Plate.  相似文献   

牡蛎循环系统的研究     

李孝绪  李凤兰  齐钟彦 《海洋与湖沼》1994,25(6):619-624

于１９８９－１９９０年在海南岛、广东蛇口以及青岛近海采集１２种牡蛎,进行循环系统的比较解剖学研究。首次提高了牡蛎的循环系统有两种类型,即附心脏型和无附心脏型。两者之间的主要区别是：（１）附心脏型无肌套血管,其外套血液主要来自环外套动脉和附心脏;无附心脏型,由于无附心脏和环外套动脉,其外套血液主要来自肌套血管。（２）附心脏型是通过出鳃静脉和外套静脉分别将鳃前部和后部的血液送回心耳;无附心脏型的外套静  相似文献   

规则波和不规则波作用下消波建筑物前的波高分析   总被引：1，自引：0，他引：1  

李荣庆  谢世楞 《海洋工程》1994,(1)

消波建筑物在国内外已得到广泛应用。本文采用近似方法分析了明基床上直立式消波建筑物前的波高及消波室内的波高，从而确定建筑物的消波效果。并在规则波的基础上将成果推广至不规则波作用下的情况。  相似文献   

季节内SST和混合层深度变化的模式研究     

孙即霖  吴德星  李国璋 《中国海洋大学学报(自然科学版)》1993,(Z2)

用Niiler—Kraus类型的混合层积分模式,对TOGA—COARE强化观测期间由《实验3号》科学考察船观测资料得到的混合层深度和SST在季节内时间尺度的变化进行了模式研究。指出:1.混合层耗散参数与较长时间尺度过程风应力的变化存在着比较好的对应关系;2.模式可以较好的对风场和热通量场在季节内时间尺度的变化作出响应,模拟出季节内时间尺度SST的变化;3.Niiler,-Kraus模式在考虑耗散作用后,可用于海洋季节内时间尺度变化的模式研究。  相似文献   

Suspended sediment transport of the Hangzhou Bay and its related hydrodynamic analyses     

Li Bogen  Yang Zhaoqing  Xie Qinchun 《海洋学报(英文版)》1993,12(1):39-50

The 25-h measurements of current speed, flow direction, water depth, suspended sediment concentration and salinity were carried out at six anchored stations in the study area during spring and neap tides in winter of 1987 and summer of 1989. Caculations and analyses of the data obtained show that large amounts of suspended sediments are moved back and forth under the action of tidal current, and the net transport of sediment is small, with its predominance upstream in winter and downstream in summer. These calculations and analyses also suggest that the advective transport of sediment is dominant, while the vertical gravitational circulation of the suspended sediment comes next. Meantime, it is indicated that tidal currents play a major role in the suspended sediment transport, and residual flows have effect on the net transport of the suspended sediment, which is more remarkable during neap tide than during spring tide.  相似文献   

中国沿海星虫动物门名录   总被引：2，自引：0，他引：2  

李凤鲁  周红  王玮 《中国海洋大学学报(自然科学版)》1992,(2)

取1980～1989年间在我国沿海进行星虫动物区系调查的标本和有关资料做了整理、鉴定,共39种,分隶于2纲,4目,6科,12属。其中1种在我国为首次记录。  相似文献   

中华乌塘鳢的群体生物学研究 Ⅱ.生化遗传变异     

李刚 《热带海洋学报》1991,(2)

用同工酶谱法发现中华乌塘鳢Bostrichthy sinensis四个群体的遗传变异水平很低,在所检测的30个基因座位中,多态座位比例只有0—10％,平均杂合度仅为0.2—0.5％,物种的平均杂合度为0.33±0.10％。四个群体共享常见的等位基因。虽然其中三个群体拥有特有的等位基因,但其基因频率都未超过5％。四个群体的Nei氏遗传距只有1.68—12.13×10~(-5)。据分析,近交可能是遗传变异水平低和形态特征分化差的主要原因。种苗生产上应注意广泛采集不同地理群体的鱼作亲鱼,以丰富养殖群体的基因库。  相似文献