LCR—G型重力仪固体潮观测记录分析

对 LaCoste-Romberg G147加反馈系统重力仪在白家疃地震台进行的台站固体潮记录作调和分析,通过与其它型号重力仪观测资料对比。发现 LaCoste-Romberg G147重力仪台站固体潮观测的结果优于 GS15重力仪,并与 GEO 重力仪观测精度在同一个量级,因此得出白家疃地震台的潮汐因子。     

用正向供电技术提高视电阻率观测精度

定量地实验研究了在采用不同观测方法相同干扰对视电阻率测量的影响。结果表明，采用正反向供电方法可大幅度提高视电阻率的观测测精度。同时还在ＺＤ８地电仪上实现了这种观测方法，试验结果与理论推算值基本相符。     

3D GRAVITY INVERSION OF THE CHESHIRE BASIN1

Three-dimensional inverse gravity modelling is used to determine the structure of the Carboniferous sediments underlying the Jurassic and Permo-Triassic formations in the Cheshire Basin. The gravity effect of the Jurassic and Permo-Triassic rocks was first removed from the observations and the resulting residual gravity field was then inverted to map variations in depth of the Carboniferous formations. The inversion technique is performed in the frequency domain, enabling rapid computation of solutions for large gridded data sets. Evaluation of results shows that there is good agreement between calculated and observed values, with interpreted depths to the base of the Carboniferous in excess of 6 km. Gravity inversion results also delineate areas of faulting on the south-western and eastern edges of the basin.     

华南地区近震走时表（速度模型）的精度检验

利用１６６次地震资料，通过３种地壳速度模型的对比，按照规定的评判原则，对《华南地区近震走时表》（速度模型）对福建及其邻区的地震定位精度进行了检验．结果表明，华南地区地壳模型（走时表）比Ｊ－Ｂ模型（走时表）更适合于本区地震的定位．     

MAPPING OF CRUSTAL DISCONTINUITIES BY WAVELENGTH FILTERING OF THE GRAVITY FIELD1

A statistical technique, based on the concept of a 1D energy density spectrum of the observed gravity field, has been used to compute ensemble average depths to various horizons containing causative sources of random geometric shape, size, density, etc. The plot of the logarithm of the energy of the observed Bouguer anomaly versus the angular frequency can be approximated, over a certain frequency band, by a linear segment whose slope is related to an average ensemble depth around which a random distribution of numerous anomalous sources exists. Suitable matched filters, based on the computed values of intercepts and slopes of several linear segments approximating the spectrum, have been used to deconvolve the gravity effects associated with the causative sources, occurring around their respective mean depths. The individual deconvolved gravity effects thus separated out have been modelled using the sin x/x method by assuming a fluctuating interface between two formations. The applicability of the present method has been assessed using two observed Bouguer anomaly profiles: one from Ujjain to Mahan, and the other from Jhansi to Mandla where Deep Seismic Sounding (DSS) results are available. The proposed geological crustal models along these two profiles exhibit reasonably good agreement with those obtained from DSS results. A geologically plausible model of the crust in a virgin region has been presented along a Bouguer anomaly profile from Jaipur to Raipur. The following main conclusions have been drawn from the present analysis: (1) The depths to the Moho and Archaean basement interfaces fluctuate between 33.2 and 36.8 km and between 4.6 and 7.0 km respectively. (2) The Narmada-Son Lineament (NSL) does not coincide exactly with the Moho upwarp beneath it. However, this offset is greater in the eastern part of the NSL rather than in the western part. (3) The development of the Satpura horst structure is due to a rise in the Moho interface in a compressional regime. (4) The intrabasement feature (depth from 5 to 12 km) represents a hybrid massif possibly formed due to an admixture of sialic and simatic crust under a tensional regime in the Ujjain-Mahan section.     

非等步长GM(1,1)模型在建筑物变形监测中的应用研究

将灰色系统理论应用于建筑物变形监测数据分析,针对观测周期的不确定性因素,提出使用非等步长GM(1,1)模型进行监测,并用最小二乘法求解模型参数,给出模型精度的检验方法,并以实际的建筑物的沉降观测数据为例说明应用此方法的全部过程,将分析和预测结果与传统GM模型进行比对,获得了更好的拟合数据和预测数据,且精度更高。     

SEISMIC AND GRAVITY TWO-DIMENSIONAL INHOMOGENEOUS MODEL OF THE EARTH'S CRUST (ON THE EXAMPLE OF CENTRAL KAZAKHSTAN)*

The interpretation of deep seismic sounding (DSS) data has been made on the basis of a two-dimensional inhomogeneous model. The refracted first arrivals as well as reflected and diffracted waves on the seismic records have been utilized. The seismic section was modeled in the iso-veolcity lines v(x, y) = const, taking into account the zones of diffraction associated with deep faults. Gravity observations have been used to construct a block model of the Earth's crust with vertical boundaries. It is suggested to define the base of the crust as the zone with velocities between 7.8 and 8.2 km/s. The reflecting boundaries of different length occurring in this zone can be conformal or unconformal with the iso-velocity lines near the base of the crust. As an example of our approach to the interpretation of DSS data the folded-blocky structure of the crust with horizontal inhomogeneities of velocity and density is shown in the Kzyl-Orda-Dzheskazgan profile in Central Kazakhstan.     

APPLICATION OF A QUASI-2D HYDRO-MORPHOLOGICAL MODEL TO THE ARGENTINEAN PARAN(A) RIVER

Herein a simplified quasi-two dimensional horizontal hydro-morphological mathematical model is presented. The governing equations for the quasi-2D horizontal time-depending flow field are represented by the well-known approach of interconnected cells. New discharge laws between cells are incorporated. The model is capable of predicting temporal changes in water depth, velocity distribution,sediment transport, bed elevation, as well as water and suspended sediment exchanges between main stream and flood plains. An application of the model to the middle reach of the Argentinean Parana River is presented. Satisfactory results were obtained during model calibration, validation and application.     

O(T2)精度下椭球界面Dirichlet边值问题的积分解

研究了边界是参考椭球面的Laplace方程Dirichlet边值问题的求解，在O(ε4·T)精 度下给出了参考椭球界面上扰动重力位Dirichlet外问题的积分解式. 该结果理论上优于目 前常用的球近似下的积分解式，从而为研究物理大地测量中边值问题的求解提供了新的依据     

全球Schwideski海潮模型K_1、O_1分波在中国大陆产生的地倾斜负荷潮

本文根据计算地倾斜负荷潮的积分Green函数方法,计算了全球Schwiderski海潮模型K_1、O_1分波在中国大陆产生的地倾斜负荷潮,绘制了K_1、O_1分波负荷潮椭圆及其长轴迹线,沿长轴方向分量的等潮时线,长、短半轴等值线诸地倾斜负荷潮参量在中国大陆境内的分布图,给出了它们的空间分布图象,为国内的地倾斜固体潮研究提供了重要的参考资料.     

NUMERICAL SIMULATION OF INUNDATION IN SHENZHEN CITY BY FINTE DIFFERENCE MODEL MIXED WITH 1D AND 2D UNSTEADY FLOW

ＮＵＭＥＲＩＣＡＬＳＩＭＵＬＡＴＩＯＮＯＦＩＮＵＮＤＡＴＩＯＮＩＮＳＨＥＮＺＨＥＮＣＩＴＹＢＹＦＩＮＴＥＤＩＦＦＥＲＥＮＣＥＭＯＤＥＬＭＩＸＥＤＷＩＴＨ１ＤＡＮＤ２ＤＵＮＳＴＥＡＤＹＦＬＯＷ￥ＣＨＥＮＧＸｉａｏｔａｏ；ａｎｄＱＩＵＪｉｎｗｅｉ（Ｓｅｎ...     

全球Schwideski海潮模型K1、O1分波在中国大陆产生的地倾斜负荷潮

本文根据计算地倾斜负荷潮的积分Green函数方法,计算了全球Schwiderski海潮模型K1、O1分波在中国大陆产生的地倾斜负荷潮,绘制了K1、O1分波负荷潮椭圆及其长轴迹线,沿长轴方向分量的等潮时线,长、短半轴等值线诸地倾斜负荷潮参量在中国大陆境内的分布图,给出了它们的空间分布图象,为国内的地倾斜固体潮研究提供了重要的参考资料.     

利用数值计算方法(Lagrange)研究伽师及邻近地区重力场变化特征

利用数值计算的方法（Lagrange）,结合近4期流动重力资料,分析伽师及邻近地区的重力场时空动态变化特征,初步研究了该区的重力变化与地震活动及构造的关系。结果表明：重力场变化与构造环境变化有关。在地震孕育过程中,重力场出现有规律的变化并伴随重力变化密集区,地震往往多发于重力场变化正负值交替的零线附近。     

濮阳地区土壤(断层)气特征研究

在地震地球化学前兆观测中,土壤(断层)气观测越来越受到重视。开展了利用水氡、水质、气体观测仪器设备进行土壤(断层)气的实验观测。对濮阳地区土壤(断层)气特征进行了研究。     

地震孕育体源流变模型（一）-位移场

为了研究地震孕育过程，在弹性包体理论的基础上建立了流变介质的体源包体模型理论．本文基于弹性包体模型的位移场的解析解，运用流变力学理论中的对应原理，导出流变体介质中，包体在任意一点的3个方向分别产生的位移的粘弹性解析解.      

1902年新疆阿图什8(1/4)级地震形变特征与发震模式初探

在收集、分析前人资料及野外考察的基础上 ,重点研究了 190 2年阿图什 8 级地震形变特征与区域地震构造环境的关系 ,并结合震中区的地球物理探测成果 ,对该地震的发震模式进行了探讨。认为 ,阿图什大震的发生是塔里木与南天山两大块体相向对冲挤压的结果。较大的震源深度 ,使得震中区变形以较大规模和范围的崩塌、滑坡、地裂缝等重力地质现象为主 ,浅部薄皮活动构造亦发生了同震破裂及褶皱变形     

三向地震模拟振动台静力平衡系统的设计与分析

我国自行研制的三向六自由度大型地震模拟振动台采用蓄能器液压马达系统作为其重力平衡装置。用修正的滞弹性模型近似描述蓄能器液压马达系统是合理的，按照静态准则和动态准则设计该系统，确保系统能满足设计要求。本文并对蓄能器流动民达压力控制系统、启动特性和平衡特性进行了分析。     

湖泊富营养化评价模糊集理论与模式

根据湖泊(水库)营养化具有模糊性的特点。建立了湖泊(水库)富营养化评价的模糊集理论与模式,并首次提出富营养化指标综合权重矩阵概念及其确定方法。应用该模式对我国12个湖泊(水库)的富营养化程度进行了评价,结论与实际情况相符。为湖泊(水库)富营养化治理和保护提供了科学依据。上述理论与模型原则上亦可在其他环境评价领域中应用。     

全球Schwideski海潮模型K1、O1分波在中国大陆产生的地倾斜负荷潮

本文根据计算地倾斜负荷潮的积分Green函数方法,计算了全球Schwiderski海潮模型K₁、O₁分波在中国大陆产生的地倾斜负荷潮,绘制了K₁、O₁分波负荷潮椭圆及其长轴迹线,沿长轴方向分量的等潮时线,长、短半轴等值线诸地倾斜负荷潮参量在中国大陆境内的分布图,给出了它们的空间分布图象,为国内的地倾斜固体潮研究提供了重要的参考资料.