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Segment, Linkage, and Extensional Fault-Related Fold in Western Liaodong Bay Subbasin, Northeastern bohai sea. China

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Journal of China University of Geosciences 2008年第6期19卷 602-610页

作者：杨明慧周心怀魏刚刘乐李春霞郑晓凤刘晓健高立宝 Faculty of Natural Resource & Information Technology China University of Petroleum State Key Laboratory of Petroleum Resource and Prospecting China University of Petroleum Tianjin Oil Company CNOOC Limited Resea.ch Institute of Yanchang Petroleum Group Co. Ltd. Resea.ch Institute of Exploration and Development Jidong Oilfield PetroChina No. 203 Resea.ch Institute of Nuclear Industry

The western Liaodong （辽东） Bay subbasin displays examples of segment, linkage of extensional fault, and fault-related folds. The Liaoxi （辽西） extensional fault system consists of a series of NNE- and NE-trending segments that were linked through relay ramps. The fault hanging walls are characterized by a series of en echelon synclines with axial traces sub-parallel to the faults. The synclines are doubly plunging located on the hanging wall of normal faults, with the strata dip sub-parallel to the fault. These folds result from along-strike displacement variations of the individual fault segments, as well as from extensional fault-related folding. In the study area, the synclines are separated by transverse intra-basin highs and relay ramps that formed where segment linkage occurred. These hanging wall synclines and their relation to fault displacement variations indicate that they are formed by extensional fault-related fold.

关键词： extension fault-related folding,fault segment fault linkage Liaodong Bay sub-basin bohai sea.

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Development and Application of a Marine Ecosystem Dynamic Model

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International Journal of Automation and computing 2011年第2期8卷 154-160页

作者： Hao Liu College of Marine Sciences Shanghai Ocean University Shanghai 201306 PRC

A nutrient-phytoplankton-zooplankton-detritus （NPZD） type of marine ecosystem model was developed in this study,and was further coupled to a three-dimensional primitive-equation ocean circulation model with a river discharge model and a solar radiation model to reproduce the dynamics of the low nutrition level in the bohai sea.（BS）.The simulation results were validated by observations and it was shown that the sea.onal variation in the phytoplankton biomass could be characterized by the double-peak structure,corresponding to the spring and summer blooms,*** was also found that both nitrogen and phosphate declined to the lowest level after the onset of the summer bloom,since the large amounts of nutrients were exhausted by phytoplankton for photosynthesis,and the concentrations of nutrients could resume in winter after a series of the biogeochemical-physical *** calculating the nitrogen/phosphorus （N/P） ratio,it is easy to see that the phytoplankton dynamics is nitrogen-limited as a whole in BS,though the phosphorus limitation may occur in the Yellow River （YR） Estuary where the input of riverine nitrogen is much more than that of phosphate.

关键词： Marine ecosystem dynamic model nutrient algae blooms euphotic zone bohai sea.

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