磁层亚暴期间同步高度电子通量突增的理论计算

本文在给定的电场和磁场模式下,利用引导中心的动力学方程,计算了在磁层亚暴期间同步高度处电子通量突增的过程。结果表明:在增长相期间,电子通量并不增长,甚而有下降的趋势,电子通量的突增,大约是在膨胀相的开始。突增事件是发生在地方时半夜到黎明,10点到18点这一时间内没有突增现象,18点以后又发现有突增现象。这些主要特征与卫星的观测结果相符合。     

引导中心的动力学方程及其在空间物理中的应用

本文导出了引导中心的四个动力学方程并推广到相对论形式,讨论了这些方程之间的联系及其在空间物理中的应用。这四个方程中,引导中心相空间连续方程是基本方程,刘维定理则是核心。     

我国磁层物理研究的进展和展望

在我国空间科学的开拓者赵九章教授的倡导下，1959年我国开始开展磁层物理研究工作．70年代中期以后，经过20多年的努力，我国磁层物理研究有了很大进展，现已具备重点发展和重点突破的条件本文在文献[1-3]综述的基础上，对近年来我国在磁层物理若干领域内的主要成果进行了补充评述，并对21世纪初我国磁层物理学的发展提出若干建议     

郯庐断裂带潍坊—嘉山段全新世活断层的活动方式与发震模式

郯庐断裂带潍坊－嘉山段全新世活断层由三个独立的破裂段组成。从各段的断错地貌，松散堆积物特征，断层本身的特点以及断层泥的显微构造标志看，各段具有共同的特点，就是主要粘滑运动为主，并在震后有蠕滑调整运动，各段具有断层闭锁→粘滑发震→震后调整→断层再次闭锁的发震模式，目前莒县－郯城段仍处于震后调整阶段，而安丘段和新沂－泗洪段由已处于断层闭锁的后期阶段，面临粘滑发震的危险。     

亚暴膨胀相近磁尾位形不稳定性模型Ⅱ.中磁尾等离子体流与近磁尾亚暴活动的关系

在单流体MHD近似下，研究了有背景等离子体流存在时的近磁尾位形不稳定性．分析表明，等离子体地向流使两支漂移气球模DBM1和DBM2的不稳定增长更快．与卫星观测资料对比显示，诸多的观测观象与本模型的预言一致．这个结果对中磁尾磁场重联及高速等离子体流与亚暴膨胀相在近地触发之间的关系给出了新的解释．     

水文地球化学方法在煤矿水害研究中的某些应用——以平顶山、肥城矿区研究为例

矿井防治水的理论和工程实践表明，水文地球化学方法是矿井水害预防和治理工作中较为有效的一种方法，以平顶山矿区、肥城矿区为例，阐述了水文地球化学方法在水害研究中的某些应用，在平顶山矿区、环境同位素（氢、氧）和统计分析（聚类分析）技术的研究结果，进一步证实和校正了以往对该区水流系统的概念模型，即局部水流系统和过渡水流系统（或西南部和东北部子系统）的划分仅适于寒武系灰岩含水系统；砂岩含水层在矿区中、北部低山区接受大气降水补给，并有可能补给薄层灰岩含水层。在肥城矿区，地下水示踪试验结果表明，该区的GF9，F7－1、F7－3断层在试验段内具有较强的导水性，奥灰水可通过上述断层并以不同特征的通道和速度继续径流并补给各井下出水点，因而是该区煤矿安全的主要威胁。     

Study of seismic tomography in Panxi paleorift area of southwestern China Structural features of crust and mantle and their evolution

Structural features of the typical continental paleorift in Panxi area are revealed by seismic tomography. (1) In the profile along the minor axis of Panxi paleorift, we found alternating high and low-velocity strips existing at different depths in the crust, presenting itself as a “sandwich” structure. The existence of these high and low-velocity anomaly strips is related to the basal lithology in the rift area. (2) An addition layer with velocity values of 7.1-7.5 km/s and 7.8 km/s exists from the base of lower crust to uppermost mantle and its thickness is about 20 km. Some study results indicate that the addition layer results from the invasion of mantle material. (3) A lens-shaped high-velocity body surrounded by relatively low-velocity material is observed at depths of 110-160 km between Huaping and Huidong in the axis of the paleorift. This is the first time to discover it in the upper mantle of the paleorift. Based on the results of geology, petrology and geochemistry, we infer that the formation of the addition layer and the lens-shaped high-velocity body in the upper mantle are related to the deep geodynamic process of generation, development and termination of the rift. On the one hand, the upwelling of asthenosphere mantle caused partial melting, and then the basaltic magma from the partial melted material further resulted in underplating and formed the crustal addition layer. On the other hand, the high-density content of mineral facies was increased in the residual melted mass of intensely depleted upper mantle, formed by basalt withdrawing. The solid-melt medium in the depleted upper mantle was mainly an accumulation of garnet and peridotite because the heating effect of lithosphere was relatively weakened in the later riftogenesis, so that a lens-shaped high-density and high-velocity zone was produced in the upper mantle. The results indicate that the energy and material exchange between asthenosphere and lithosphere and remarkable underplating would have an important effect on the material state and propagation of seismic wave in the lower crust, crust-mantle interface, asthenosphere and lithosphere. This process possibly is an important mechanism on the growth of continental crust and the evolution of deep mantle.     

Study of seismic tomography in Panxi paleorift area of southwestern China--Structural features of crust and mantle and their evolution

Structural features of the typical continental paleorift in Panxiarea are revealed by seismic tomography. (1) In the profile along the minor axis of Panxi paleorift, we found alternating high and low-velocity strips existing at different depths in the crust, presenting itself as a "sandwich" structure. The existence of these high and low-velocity anomaly strips is related to the basal lithology in the rift area. (2) An addition layer with velocity values of 7.1-7.5 km/s and 7.8 km/s exists from the base of lower crust to uppermost mantle and its thickness is about 20 km. Some study results indicate that the addition layer results from the invasion of mantle material. (3) A lens-shaped high-velocity body surrounded by relatively low-velocity material is observed at depths of 110-160 km between Huaping and Huidong in the axis of the paleorift. This is the first time to discover it in the upper mantle of the paleorift. Based on the results of geology, petrology and geochemistry, we infer that the formation of the addition layer and the lens-shaped high-velocity body in the upper mantle are related to the deep geodynamic process of generation, development and termination of the rift. On the one hand, the upwelling of asthenosphere mantle caused partial melting, and then the basaltic magma from the partial melted material further resulted in underplating and formed the crustal addition layer. On the other hand, the high-density content of mineral facies was increased in the residual melted mass of intensely depleted upper mantle, formed by basalt withdrawing. The solid-melt medium in the depleted upper mantle was mainly an accumulation of garnet and peridotite because the heating effect of lithosphere was relatively weakened in the later riftogenesis, so that a lens-shaped high-density and high-velocity zone was produced in the upper mantle. The results indicate that the energy and material exchange between asthenosphere and lithosphere and remarkable underplating would have an important effect on the material state and propagation of seismic wave in the lower crust, crust-mantle interface, asthenosphere and lithosphere. This process possibly is an important mechanism on the growth of continental crust and the evolution of deep mantle.     

我国海洋科学领域的全球变化研究进展

简要介绍了属于海洋科学研究领域中的全球变化研究计划,重点介绍了我国在热带海洋和全球大气（TOGA）、世界大洋环流试验（WOCE）、全球海洋通量联合研究（JGOFS）和海洋PAGES研究中所开展的工作及其研究进展。     

胜利油田孤东海堤保滩促淤工程二维潮流数值模拟研究

以胜利油田孤东海堤保滩促淤工程为实例，采用二维潮流数值模拟方法，利用实测流速资料对该海区进行潮流计算，对所提出的不同工程方案进行比较，并分析其促淤效果，在此基础上给出工程方案的推荐结论。