惠民凹陷中央隆起带异常低压特征及成因分析

惠民凹陷普遍存在异常低压现象,低压发育层段为沙河街组二段、三段,且集中分布在中央隆起带周边。前人对异常低压成因研究尚存在于定性描述阶段,应用295口井试油实测地层压力数据,分析了惠民凹陷地层压力纵向、平面分布特征;从引起异常低压主要因素入手,定量分析了抬升地层剥蚀、地层温度降低、蚀变耗水作用、蚀变矿物体积变化对地层压力的影响。结果表明,地层剥蚀孔隙反弹引起地层压力降低0516 MPa;地温下降造成地层压力降低202~373 MPa;蚀变耗水引起地层压力降低864 MPa;蚀变矿物体积变化使得地层压力降低436 MPa;成藏期烃类充注,地层压力增加量小于32 MPa。以上各因素共同作用,使得中央隆起带压力演化呈现降压-增压-降压的旋回性,并最终形成现今压力分布格局。     

山东省莱芜市幅1:50 000水文地质图数据集

本数据集选取山东莱芜市幅1：50 000地形图空间数据库、莱芜市幅1：50 000地质图部分数据作为底图,采用本次水文地质调查取得的最新数据编制而成。除水文地质图外,数据集还包括机（民）井、泉、钻孔、水质分析及水量计算等数据表,主要分类及数据量为机（民）井209个、泉14个、水库13个、长期监测点13处（监测数据936点次）、地下水水位及水量统测100点次、环境地质点6个、样品采集（全分析、同位素及岩石）90组等。本数据集主要使用MapGIS 6.7平台辅助制图,数据量约169 MB,坐标系为CGCS 2000国家大地坐标系,投影方式为高斯-克吕格投影（6度带）。数据集不仅用二维方式标注了关键水文地质信息,还在主图及部分镶图引入三维地势表达方式。     

太阳大气磁精细结构的射电探讨

太阳大气磁场的研究对于太阳大气物理及太阳活动研究是十分重要的。目前探测光球以外的日够以球，过渡区磁场的几乎唯一办法，是在紧密联系其他频说段取得的信息基础上使用射电观测。根据在微波，米波段有关辐射机制和传播过程，介绍了推导磁场讯息的基本射电方法。     

祁连山夏季地形云和降水宏微观结构的数值模拟

利用ARPS(Advanced Regional Predictional System)中尺度数值模式,对2007年7月19日低涡天气背景下发生在祁连山区的一次比较典型的地形云降水过程中云和降水的宏微观结构特征进行了深入的模拟研究和分析。结果表明,ARPS模式能够较好地模拟出地面降水分布及其发展演变特征;祁连山北坡陡峭地形的抬升作用是祁连山云系降水的主要动力机制;祁连山地形作用下云和降水的微物理结构随云的不同发展阶段呈现出不同的特征。     

复杂型爆发事件的特征

太阳射电宽带动态频谱仪1.10～2.06 GHz、2.6～3.8 GHz、5.2～7.6 GHz从2000年～2005年同时在3个频段上观测到复杂型频谱事件(45C爆发:双峰或多峰结构,单频辐射流量小于500 sfu)158个,有139个事件对应高能事件,其中对应X级耀斑3个,对应M级耀斑86个,对应C级耀斑44个。36个爆发对应发生日冕物质抛射(Coronal Mass Ejection,CME)事件,29个事件对应有II型爆发,20个事件对应IV型爆发。在76个事件中显示了丰富的毫秒级精细结构,有尖峰辐射(Spike)、鱼群结构(Fish)、斑马纹结构(Zebra)、纤维结构(Fiber)、漂移脉动结构(DPS)、准周期振荡(QPPS)、M型结构以及II、III型爆发等。举两例说明复杂爆发的观测特征。     

平衡剖面技术在龙门山中段构造解释中的应用

龙门山推覆冲断带地形条件恶劣,构造断裂复杂,阻碍了该区油气资源的勘探进程。为搞清龙门山推覆冲断带下的构造样式,验证其构造解释方案,应用平衡剖面技术,对龙门山中段具典型构造特征的地质、地震综合解释剖面进行平衡恢复。实例分析证明,平衡剖面技术可正确指导龙门山中段构造剧烈变形区的构造解释方案,并可定性、定量分析构造变形期次和变形程度,为下一步油气勘探提供可靠依据。      

琼胶寡糖聚合度对坛紫菜抗性诱导的影响

研究了琼胶寡糖聚合度对坛紫菜抗性诱导的效应。以琼胶3,6和12糖,3种聚合度的琼胶寡糖为材料,处理坛紫菜,通过观察叶片腐烂率比较坛紫菜生长状态;利用透射电镜观察处理后的细胞亚显微结构变化;并检测坛紫菜附生菌的数量变化;以对羟基苯乙酸(POHPAA)化学发光法检测坛紫菜H₂O₂释放量;利用实时定量PCR检测坛紫菜NADPH氧化酶基因(Phrboh)的差异表达。结果表明,经琼胶3糖和6糖处理,坛紫菜的Phboh表达出现上调,并产生H₂O₂暴发。经两种琼胶寡糖处理后,坛紫菜的附生菌数量明显减少,其中以琼胶6糖的效果最好,在较长培养时间内,坛紫菜能保护自身细胞亚显微结构的完整性,维持良好的生长状态。而琼胶12糖没发现任何诱导作用。综上所述,聚合度为3和6的琼胶寡糖能诱导坛紫菜的抗性响应,特别是形成单个螺旋结构的琼胶6糖的诱导作用最明显,但聚合度较大的琼胶寡糖则不能。     

The Basin Water Resources Management System and Its Innovation in China

Water provides the origin of human survival and prosperity,and the basic resource for the maintenance of terrestrial eco-systems,their biodiversity,productivity and ecological services.With China’s recent,rapid growth both in population and economic development,the water shortage has become one of the most constraints on its ecological restoration and socio-economic development,especially in the arid inland regions of northwest China.At first glance,this water shortage in China appears to be a resource crisis.But second,an in-depth analysis reveals that the water shortage crisis arises mainly resulting from the poor water management system and operating mechanism that cannot facilitate fair allocation and efficient utilization of water resources both regionally and nationally and thus is viewed as a crisis of water manage-ment.The solution of China’s water shortage and low-efficient utilization problem will,in particular,require a fundamen-tal and substantial reform or innovation of the existing water management system and operating mechanism.In this paper,we address explicitly the problems existed in the current water management system,explore the basic theory of water re-sources management and provide some insights into the way how to establish a river basin based integrated water re-sources management system in China.     

Unusual Zebra Patterns in the Decimeter Wave Band

An analysis of new observations showing fine structures consisting of narrowband fiber bursts as substructures of large-scale zebra-pattern stripes is carried out. We study four events using spectral observations taken with a newly built spectrometer located at the Huairou station, China, in the frequency range of 1.1 – 2.0 GHz with extremely high frequency and time resolutions (5 MHz and 1.25 ms). All the radio events were analyzed by using the available satellite data (SOHO LASCO, EIT, and MDI, TRACE, and RHESSI). Small-scale fibers always drift to lower frequencies. They may belong to a family of ropelike fibers and can also be regarded as fine structures of type III bursts and broadband pulsations. The radio emission was moderately or strongly polarized in the ordinary wave mode. In three main events fiber structure appeared as a forerunner of the entire event. All four events were small decimeter bursts. We assume that for small-scale fiber bursts the usual mechanism of coalescence of whistler waves with plasma waves can be applied, and the large-scale zebra pattern can be explained in the conventional double plasma resonance (DPR) model. The appearance of an uncommon fine structure is connected with the following special features of the plasma wave excitation in the radio source: Both whistler and plasma wave instabilities are too weak at the very beginning of the events (i.e., the continuum was absent), and the fine structure is almost invisible. Then, whistlers generated directly at DPR levels “highlight” the radio emission only from these levels owing to their interaction with plasma waves.     

山东大汶河流域中上游古近系含水岩组水文地质特征

利用古近系大汶口组及朱家沟组含水岩组5眼施工钻孔及55眼井孔调查资料,通过岩心、地下水常规离子组分及氢氧同位素样品测试结果,研究大汶河流域中上游莱芜盆地、大汶口盆地古近系含水岩组分布特征、物性及富水性、地下水化学及补给循环特征。结果表明:富水较好的大汶口组上段位于盆地腹部偏北,含水层岩性为半固结砂砾岩,水化学类型HCO_3-Ca·Mg型为主;朱家沟组含水岩组位于盆地边界断裂下降盘,含水层岩性为溶蚀发育的灰质砾岩,水化学类型复杂多变。现代大气降水作为地下水主要补给来源,蒸发浓缩作用,方解石、白云石和石膏溶解及人类污染活动参与了地下水化学组分的形成。归纳总结3种古近系不同类型含水岩组地下水富集规律:构造裂隙控水模式、半固结含水岩组裂隙孔隙水富集模式和灰质砾岩裂隙岩溶水富集模式。