异轨遥感CCD影像处方位元素的要求

在对异轨遥感CCD影像处理的基本模型基础上，采用在物方空间坐标系中进行手差，并对相关的掺数进行部分分离－合并，有效地控制了未知参数间的相关性，结合人工智能原理设计的分层全局最优的搜索控制算法不仅保证了算法的严密性，而且简洁，实用。     

日本九州岛地震震前电离层TEC异常

采用IGS发布的GIM数据,提出了一种结合滑动时窗法和临近格网点电离层TEC相关性分析法的联合分析方法,研究了震前电离层异常变化与地震的关系。通过分析震区附近5个格网点TEC的异常变化情况,发现震前电离层TEC发生明显异常变化,且格网点之间的TEC序列相关性受地震显著影响;通过分析二维电离层图的TEC异常空间分布,发现震前三天震中附近分别出现6h、12h和6h的异常。最后利用电离层层析的方法,对电离层异常时刻进行了电子密度的反演,进一步分析了电子密度在电离层异常时刻的分布情况。     

Deep petroleum occurrences in the Lower Kura Depression, South Caspian Basin, Azerbaijan: an organic geochemical and basin modeling study

High sedimentation rates (as much as 2500 m/Ma) during Pliocene-Pleistocene, with a resultant undercompacted section as thick as 10,000 m, and lower than normal geothermal gradients are the main characteristics which have created all the means for generation and preservation of oil at deep layers in the Lower Kura Depression.Oils collected from eight different oil fields for analyses seem to have originated from a common source rock which probably is clastic, deposited in relatively subanoxic to suboxic transitional marine environment receiving low to moderate input of terrestrial organic matter.Oils from shallow (< 3000 m) and cold (< 70–80°C) reservoirs have been altered to various extent by bacterial activity.A computer-aided basin modeling study has been carried out to outline the spatial variation of the oil window and thus help in further identification of possible source rocks for the reservoired oil in the Lower Kura Depression. Results suggest that the potential hydrocarbon source horizons of the Miocene and Pliocene Red Bed Series of the so called Productive Succession are, even at depocenter areas, immature with respect to oil generation, and thus, are very unlikely to have been source rocks for the reservoired oils. However, the Oligocene-Lower Miocene Maykop rocks are marginally mature to mature depending on locality and the Eocene and older rocks are mature with respect to oil generation at all representative field locations. Oil generation commenced at the end of Pliocene and continues at present at depths between 6000 and 12,000 m.An unusually deep (> 10,000 m) oil window in the depocenter areas has been caused by the depressed isotherms due to extremely high sedimentation rates (up to 3000 m/Ma) for the last two million years. The main phase of oil generation is taking place at depths greater than what most of the wells in the study are have reached.     

在热液内金属铅的物种形式原位观测实验

文章应用高温高压腔连接紫外_可见谱仪研究了150℃条件下铅在含氯溶液里的物种形式。实验的体系是Pbs_NaCl_HCl_H2O。实验结果表明,铅在含氯溶液里的物种形成有2个步骤:Pb2 Cl-→PbCl ,PbCl Cl-→PbCl2,处于平衡态时为PbCl2。溶液的氯浓度、温度、反应延续时间影响物种形式。     

结合模糊度和形态学指数约束的深度学习建筑物提取

基于高分辨率遥感影像的建筑物提取一直是研究的热点问题,深度学习的深层次特征提取方法,非常适合高分辨率影像中建筑物的提取,但使用深度学习提取建筑物时,大多以改变网络结构为主进行算法优化,很少与其他方法结合.本文研究在改进深度学习网络结构的基础上,结合影像模糊度约束增强、形态学建筑指数约束增强等方法,对建筑物提取方法进行更...     

地震波形数据实时监控软件的实现

介绍了地震数据采集器监控软件的设计思路,特别是在实时波形显示上,采用“环形”的显示缓存和“滑动显示窗口”技术,大数据量时也能以左移的方式连续显示实时曲线的动态变化;实时波形的纵坐标范围也是动态变化的,在任何时刻都恰好能在显示区域内完整显示。文章还介绍了如何在显示中消除明显的屏幕闪烁现象,以及对数据从传输到存储、显示的分层设计思想和多线程技术的应用。     

Localized multi-scale energy and vorticity analysis: II. Finite-amplitude instability theory and validation

A novel localized finite-amplitude hydrodynamic stability analysis is established in a unified treatment for the study of real oceanic and atmospheric processes, which are in general highly nonlinear, and intermittent in space and time. We first re-state the classical definition using the multi-scale energy and vorticity analysis (MS-EVA) developed in Liang and Robinson [Liang, X.S., Robinson, A.R., 2005. Localized multiscale energy and vorticity analysis. I. Fundamentals. Dyn. Atmos. Oceans 38, 195–230], and then manipulate certain global operators to achieve the temporal and spatial localization. The key of the spatial localization is transfer-transport separation, which is made precise with the concept of perfect transfer, while relaxation of marginalization leads to the localization of time. In doing so the information of transfer lost in the averages is retrieved and an easy-to-use instability metric is obtained. The resulting metric is field-like (Eulerian), conceptually generalizing the classical formalism, a bulk notion over the whole system. In this framework, an instability has a structure, which is of particular use for open flow processes. We check the structure of baroclinic instability with the benchmark Eady model solution, and the Iceland–Faeroe Frontal (IFF) intrusion, a highly localized and nonlinear process occurring frequently in the region between Iceland and Faeroe Islands. A clear isolated baroclinic instability is identified around the intrusion, which is further found to be characterized by the transition from a spatially growing mode to a temporally growing mode. We also check the consistency of the MS-EVA dynamics with the barotropic Kuo model. An observation is that a local perturbation burst does not necessarily imply an instability: the perturbation energy could be transported from other processes occurring elsewhere. We find that our analysis yields a Kuo theorem-consistent mean–eddy interaction, which is not seen in a conventional Reynolds stress framework. Using the techniques of marginalization and localization, this work sets up an example for the generalization of certain geophysical fluid dynamics theories for more generic purposes.     

西北太平洋热带气旋最佳定位的精度分析

用正交小波变换方法分析了近121年来季节的南方涛动指数与北大西洋涛动指数的演变特征，结果表明南方涛动指数（SOI）最显著的变化是周期约为2－7年的年际变化，它们的方差贡献率为55．1％。1920年以前和1960年以后SO年际及年代际变化较强，其余时段较弱。而NAOI最明显的变化是周期在2年以下的变化，方差贡献率为64．3％。近百年NAOI年际及年代际变化有减弱趋势。近百年来SOI有－0．52／百年的减小趋势，而NAOI有0．25／百年的增大趋势。SOI与NAOI的气候基本态之间有显著的负相关，在年代际和年尺度变化上它们相关不明显。近期北半球处于SOI低基本态高年际及年代际变率，NAOI高基本态低年际及年代际变率的慢变过程下。     

滇中小江走滑剪切带晚新生代挤压变形研究

对滇中小江走滑剪切带中的挤压变形作用进行研究发现,尽管这些变形多发生于中元古界昆阳群浅变质岩中,其形成时代却可能是第三纪末和第四纪初,和小江断裂带的走滑运动有成因关系,并导致了走滑位移量的衰减。昆阳群的隆起可能主要是第四纪变形的结果。     

安徽地区跨断层流动水准测量与区域地震关系研究

收集安徽地区沿郯庐断裂带及“霍山窗”布设的6个场地流动水准测量近30 a的观测资料,应用“形变速率累加分析”法进行处理,研究异常时段与周边地震的关系,分析相同时段所有场地形变速率累加整体特征。结果表明：1）形变速率累加分析能够有效提取每条测线超过2倍标准差的数据,同时速率较小的趋势性变化可得到压制。2）形变速率累加分析在提取形变速率时,原始数据的转折变化也能得到一定程度保留,曲线转折时期形变速率累加出现的频次明显增多。3）连续的形变速率累加时段映震效果较好,但并不能一一对应,需结合测线进行具体分析。4）研究区各测线形变速率累加在不同时段出现的频次不同,说明断裂活动均具有一定的分时特征,分时活动整体上具有群体性特点。5）当该区域跨断层水准资料的形变速率累加出现较为密集的群体性变化时,华东地区发生MS5.0左右地震的可能性会增大。