大地测量与地球动力学
Home
|
About Journal
|
Editorial Board
|
Submission Guidelines
|
|
Open Access Statement
|
|
Contact Us
|
中文
Submission Online
Manuscript
Tracking
Peer Review
Editor
Editorial Office
Editor-in-Chief
Online befor
Printed
Current Issue
Next Issue
Archive
Search
Email Alert
Search
Adv Search
Current Issue
2008 Vol.28 Issue.1
Published 2008-04-10
地壳形变与地震
1
GENERALITY AND INDIVIDUALITY OF SEISMIC DEFORMATIONBACKGROUND ANOMALY IN VARIOUS TECTONIC CONDITIONS
Wang Shuangxu;Zhang Sixin;Zhang Xi;Xue Fuping;Jiang Fengyun;and Zang Xiaoliang
By use of the repeated observational data of regional leveling network since 1970s and combining with the geologic tectonic and the recent earthquakes(Ms≥6.0) in the monitored area, the distribution of
the background abnormity of vertical deformation before and after strong earthquakes in different tectonic conditions of QilianshanHexi corridor and Chuandian areas are analyzed emphaticaly,
and compared with several typical seismic cases in North China.
The generality and individuality characteristics of background abnormity of
regional vertical deformation related to earthquake genesis in various tectonic conditions are summarized.Finally its mechanism and the meaning for forecasting the place where strong earthquakes occur are discussed.
2008 Vol. 28 (1): 1-6 [
Abstract
] (
2224
)
PDF
(2139 KB) (
2716
)
7
PRELIMINARY RESULTS OF MICROEARTHQUAKE OBSERVATION BY TEMPORARY SEISMOSTATION NETWORKS IN TANGSHAN REGION IN 2006
Lai Xiaoling ;Li Songlin ;He Jiayong ;and Sun Yi
From August to October,2006, a temporary seismostation network was densely set up in TangshanLuanxian region to record the microearthquake. This network was composed of 30 digital seismographs, and the intervals between stations were about 2 to 5 km.Among these stations two were located at the Dachengshan Park and the Nanhu Park in Tangshan, which were used for earthquake observation experiments under strong interference background.
For nearly 3 months, 398 hypocenter locations were recognised of which their signals were received simultaneously by more than 4 stations. In the same period, however,only about 40 earthquakes can be found in Regional Seismic Catalogue. It shows that more microearthquakes can be observed by the temporary seismic station network, and thus it provides plentiful basic informations for techtonic study in the observed region.
2008 Vol. 28 (1): 7-10 [
Abstract
] (
2797
)
PDF
(1665 KB) (
2877
)
11
ANALYSIS OF CURRENT MOVEMENT OFZHANGJIAKOU-BOHAI FAULT ZONE
Fang Ying;Jiang Zaisen;Zhang Jing;and Wu Yanqiang
The activity of Zhangjiakou-Bohai fault zone was analyzed with GPS data by cluster method.The analysis result shows that the crustal movement of Zhangjiakou-Bohai fault zone is the strongest in the Capital Circle region. The spatial noising was weakened by wavelet analysis and the fault movement model was given, and then the conclusion is drawn as follows. The slip rate of Zhangjiakou-Bohai faults is about 0.5 mm/a, the strain of footwall is similar to that of hangwall. It changes with timealternating translation in Zhangjiakou-Bohai fault zone from locked to slipped or from slipped to locked, and appears to be spatial alternation of strain accumulation in both side of the fault zone.
2008 Vol. 28 (1): 11-15 [
Abstract
] (
1978
)
PDF
(3906 KB) (
3751
)
16
RESEARCH ON SEISMO-IONOSPHERIC ANOMALIES USING GPS RADIO OCCULTATION DATA
Yang Jian;Wu Yun;and Zhou Yiyan
The anomalous changes of the ionospheric electronic density in the space over the regions of Kuril Islands earthquake on Nov. 15,2006 and Haixi(China) earthquake on Feb. 25,2007 had been observed by use of the GPS radio occultation for COSMIC satellite before those events and those anomalies were proved through refering to the indices K from Wuhan geomagnetic station as it was not related to the influences from actions in outer space.Therefore,it can be concluded that the GPS radio occultation technique can be used for monitoring the anomalous change of ionospheric electromic density in the space over the region where an earthquake may occur imminently because these anomalies are probably caused by the generation of earthquakes.
2008 Vol. 28 (1): 16-22 [
Abstract
] (
2774
)
PDF
(6820 KB) (
3976
)
23
RESEARCH ON GRACE SATELLITE GRAVITY CHANGESIN CHINESES MAINLAND AND ITS VICINITY
Zou Zhengbo;Xing Lelin;Li Hui;Kang Kaixuan;and Zhou Xin;
It is introduced how to use GRACE data to compute the gravity changes. The maximum truncated degree of the monthly GRACE gravity field models
for seismological research is discussed as well. We try to use the GRACE level 2 products to calculate the gravity changes in Chinaese mainland and its vicinity with Gaussian smoothing method and get reasonable results.
2008 Vol. 28 (1): 23-27 [
Abstract
] (
2074
)
PDF
(2439 KB) (
4038
)
28
STUDY ON WENAN EARTHQUAKE AND CHANGES OF REGIONAL STRAIN FIELD
Zhang Jing ;Chen Ronghua ;and Wang Wuxing
The characteristics of regional strain field in the Capital Circle are studied by analyzing the strain data of continuous observation and the focal mechanism of small earthquakes. It shows that the direction of regional principal strain and azimuth of the principal compression stress axis turned synchronously before Wenan Ms5.1 earthquake since Apr. 2006 and the special scale of change was about 200 km.
2008 Vol. 28 (1): 28-31 [
Abstract
] (
1966
)
PDF
(1413 KB) (
3231
)
32
BAM EARTHQUAKE DEFORMATION FIELD RESEARCH BY D-InSAR
Li Yi;Liu Lintao;Xue Huaiping;and Hao Xiaoguang
The basic principle of D-InSAR is introduced and then its application and data processing in the study of seismic deformation field are shown taking the ENVISAT data of Bam earthquake as an example.
2008 Vol. 28 (1): 32-35 [
Abstract
] (
2432
)
PDF
(5346 KB) (
4205
)
36
ON GENETIC ALGORITHM FOR 3D INVERSION OF UNDERGROUND DENSITY CHANGES
Xuan Songbai ;Shen Chongyang ;Sun Shaoan ;Liu Jie ;Li Hui ;and Liu Shaoming
The method for inversing density changes of underground abnormal body with genetic algorithm by use of the repeated gravity data is described. The validity and stability of this method are proved by simulating trial calculation.The density changes before and after the first water impounding of Three Gorges Reservoir are inversed. Considering some possible situations of underground rock body’s density changes caused by the water impounding, four priori density contrasts are used to fit the remaining gravity changes obtained by repeat gravity data from April to July 2003 after deducting the gravity changes caused by the water loading. Some meaningful results are given.
2008 Vol. 28 (1): 36-40 [
Abstract
] (
1981
)
PDF
(3404 KB) (
4126
)
41
UNBIASED ESTIMATION OF EXTENDED GREY MODEL AND ITS APPLICATION TO FORECAST OF DEFORMATION OF STEEP SLOPES
Liu Zhiping;and He Xiufeng
An unbiased estimation method based on original series and accumulated series for extended grey model (EGM) is developed, and the formula is proposed for calculating maximum predictable time scale of grey model. Unbiased extended GM (UEGM) has the characteristics of numerical stability, modeling objectivity and unbiased property. The steep slope engineering of Xiaowan Hydropower Station is studied as a case. The results show that the UEGM (1, M) model is better than
the UGM (1, 1) and the EGM (1, M) models in precision and reliability.\
2008 Vol. 28 (1): 41-44 [
Abstract
] (
2203
)
PDF
(494 KB) (
3631
)
45
WAVEFORM ANALYSIS OF TOPEX/POSEIDON SATELLITE ALTIMETER OVER LAKE
Gao Yonggang ;Guo Jinyun ;Huang Cheinwei ;and Yue Jianping
The altimeter waveform data of satellite TOPEX/Poseidon over Hulun lake are analyzed. It is proved that satellite altimeter waveforms over lake have oceanlike characteristics.
Most of the altimeter waveforms are peaks or spikes during the frozen period in winter, while the wave energy is lower than that in summer owing to the influence of snow and ice covering the lake surface.
2008 Vol. 28 (1): 45-49 [
Abstract
] (
2650
)
PDF
(2787 KB) (
3079
)
理论与方法
50
ERROR ANALYSIS OF ORBIT DETERMINED BY GPS BROADCAST EPHEMERIS
Li Zhenghang;Ding Wenwu;and Li Zhao
The variations of orbit error of GPS broadcast ephemeris from 2002 to 2006 are analyzed, and
some effects on the orbit accuracy are discussed.
The results show that the orbit accuracy of GPS broadcast ephemeris in 2006 was much better than that in 2002 especially after
the implementation of L-AII project.
2008 Vol. 28 (1): 50-54 [
Abstract
] (
2882
)
PDF
(1139 KB) (
4163
)
55
APPLICATION OF IMPROVED GENETIC ALGORITHM IN INDUSTRIAL SURVEYING DATA PROCESSING
Pan Guorong;and Gu Chuan
The two defects of genetic algorithm(GA) is modified from several aspects, and improved by use of MATLAB language. Through an example, the feasibility of applying improved GA into industrial surveying and reverse engineering is discussed.
By comparison, it is shown that the new GA has been greatly improved in global convergence and convergent rate.
2008 Vol. 28 (1): 55-58 [
Abstract
] (
2593
)
PDF
(746 KB) (
3926
)
59
APPLICATION OF GENETIC ALGORITHM IN NONLINEAR REGRESSION MODEL GENERATING
Wang Suihui;and Pan Guorong;
On the basis of the principle which the function of high nonlinearity is not appropriate to linearize,the limitation of traditional methods in solving parameters of nonlinear regression estimation is analyzed.
A new method based on genetic algorithm is proposed, which adopts uniform design means to combine genetic operator, conduct numerical experiments and then obtain optimal estimation of parameters of regression estimation. The results show that there is no need of good initial values of parameters when genetic algorithm is adopted, both the capability of global search and the robustness of genetic algorithms exceed that of traditional algorithms.
2008 Vol. 28 (1): 59-64 [
Abstract
] (
2098
)
PDF
(413 KB) (
4356
)
65
STUDY ON MULTIPATH EFFECT IN STRUCTURE HEALTH MONITORING USING GPS
Dai Wujiao ;Ding Xiaoli ;and Zhu Jianjun
The multipath effect has strong repeatability when the surveying point and its surroundings keep unchanged.
In order to analyze the property of the multipath effect in GPS for deformation observation, a vibration measurement test is carried out by use of a simulation vibration table. The results show that there are some jumps of high frequency in the multipath error series and its main frequency is near to the vibration frequency of the table,thus it makes the repeatability down,but in the part of low frequency.
After the multipath correction using the part of low frequency which has a certain repeatability,the accuracy of GPS measurement can be improved about 30%.
2008 Vol. 28 (1): 65-71 [
Abstract
] (
2806
)
PDF
(3366 KB) (
3333
)
72
RESEARCH ON SEPARABILITY OF SYSTEMATIC ERROR ANDGROSS ERROR BASED ON SEMIPARAMETRIC MODEL
Ding Shijun ;Zhang Songlin ;and Chang Kaisi
A method of hypothetical test based on semiparametic model is put forward to analyze the separability of systematic error and gross error in theory.Through two simulation examples, the validity and rationality of the method are verified.
2008 Vol. 28 (1): 72-76 [
Abstract
] (
2241
)
PDF
(650 KB) (
3210
)
77
DIRECT LEAST SQUARE ROBUST ESTIMATION METHOD FOR ELLIPSE FITTING
Xu Zhengwen ;and Yao Lianbi;
Tunnel cross section deformation ellipse reflects the deformation of tunnel segment under external load. The spatial geometry parameters of the deformation ellipse can be calculated through accurate spatial ellipse fitting. The algorithm for direct least square
ellipse fitting based on robust estimation is introduced, which integrates the gross error detecting by robust estimation and conic parameter constraint
of ellipse. The algorithm is implemented in a Matlab program, and is validated by a set of real surveying data of Shanghai Yangtze River Tunnel. The fitting result shows that the algorithm increases the accuracy and the efficiency in gross error detecting.
2008 Vol. 28 (1): 77-80 [
Abstract
] (
2801
)
PDF
(511 KB) (
3794
)
81
COORDINATE TRANSFORMATION OF DIGITAL MAP BASEDON COLLOCATION BY TWO MINIMIZATION STEPS
Zeng Anmin;and Zhang Juqing
After having reviewed the basic collocation theory, the principle of the collocation by two minimization steps is introduced. Considering that the stochastic signal contains not only the stochastic information but also some systematic trend, after the systematic trend parameter having been calculated and then the residual was used to compute the covariance function of the stochastic information. With the refitted covariance function, the stochastic signal was evaluated and the systematic trend parameters were estimated again.
An actual digital map case shows that the solution accuracy with this method for collocation is better than that with the affine transformation by least squares.
2008 Vol. 28 (1): 81-84 [
Abstract
] (
2086
)
PDF
(559 KB) (
3257
)
85
DATA QUERY SYSTEM OF GML SPATIAL DATABASEBASED ON EXPANDED NXD
Lan Xiaoji ;Xiao Huihui ;and Duan Yanming
Currently, Geography Markup Language(GML) has become actually the international standard language for spatial data encoding, transmission, storage and release. Traditional query languages such as SQL and SQL extension , however, are not suitable for direct inquiry and updating of GML documents. Even the effective approaches working well with eXtensible Markup Language (XML) can not guarantee good results when applied to GML documents,for example, the W3C XQuery is a powerful standard query language for XML，but it does not support
querying spatial features which includes the most important components in GML documents. We put forward the expansions of Inquiry of XQuery and space XQuery syntax, and to some extent, realize the data query of GML spatial database based on the expansion of Native XML Database(NXD).
2008 Vol. 28 (1): 85-91 [
Abstract
] (
2815
)
PDF
(779 KB) (
3434
)
92
SPATIAL COORDINATE TRANSFORMATION BASED ON MULTIPLEPARAMETER REGULARIZATION AND ITS ACCURACY ANALYSIS
Chen Zhengyu ;and Liu Chun;
Threedimensional coordinate transformation is widely used in indoor computation for surveying and mapping. The transformated parameters may directly influence the accuracy of transformationed points. These parameters can be obtained with least square by at least three common points under Bursa model. Because of the illposed coefficient matrix, the obtain parameters is uncertain. In order to improve the accuracy and reliability,we put forward a transformation model considering translation, rotation and scale parameters by Tikhonov multiple parameter regularization based on Morozov bias principle. The simulated examples verify that the accuracy of the transformed coordinates in peripheral area and its stability can be significantly improved by multiple parameter regularization.
2008 Vol. 28 (1): 92-95 [
Abstract
] (
2089
)
PDF
(830 KB) (
3810
)
96
GPS PRECISE POINT POSITIONING MODELS AND THEIR UTILITY ANALYSIS
Wu Jiangfei ;and Huang Cheng
Three common models the traditional model for precise point positioning are induced,i.e. the UofC model and the Noambiguity model and then they are applied them to determine zerodifference kinematic orbit of low earth orbiters based on GPS. Through comparisons and analysis of the orbit determination results, some meaningful conclusions are drawn.
2008 Vol. 28 (1): 96-100 [
Abstract
] (
2115
)
PDF
(985 KB) (
3908
)
101
ANALYSIS OF MODEL ERROR EFFECT ON KALMAN FILTERING
Xu Apei ;Gui Qingming;and Han Songhui
The difference between the practical filtering value and the real filtering value is deduced in view of the fact that there are errors in the coefficient matrix and the stochastic model in practice. The influences of the errors of the coefficient matrix and the stochastic model on the filtering value and the residuals are discussed.
2008 Vol. 28 (1): 101-104 [
Abstract
] (
2164
)
PDF
(579 KB) (
3356
)
105
DYNAMIC VISUALIZATION OF LAND USE BASED ON MATHEMATICAL MORPHOLOGY
Yu Yongping ;Chen Xiaoyong ;Liu Jingnan ;and Dou Jie
The source of GIS data is various and the data quantity is huge．As to land use of urban，the data is static,it can not represent the dynamic spatial change course．After analyzing the classic spatial interpolation methods, a method based on mathematical morphology
to realize the dynamic visualization of land use is presented.
2008 Vol. 28 (1): 105-108 [
Abstract
] (
2728
)
PDF
(1102 KB) (
3269
)
109
GEODETIC INVERSION THEORY CONSTRAINED WITH INEQUALITY
Wang Leyang;and Zhu Jianjun
The ununiqueness of estimated parameter is one of the problems in geodetic and geophysical inversion. Getting a best parameter is the research hot and difficulty in inversion problem. Prior information is very important to get the best parameter. The conventional method using the prior information is analysed. The inequality constrained geodetic inversion theory is given to solve the ununiqueness problem with the prior information.The advantages, key point and difficulty of this theory are discussed.
The realization and classification method for this theory are given. Through an example this theory is analized.
2008 Vol. 28 (1): 109-113 [
Abstract
] (
2282
)
PDF
(393 KB) (
3357
)
114
DATA PROCESSING IN PRECISION SURVEYING OF BALLASTLESS TRACK HIGH-SPEED RAILWAY
Cai Shiyi ;Li Bofeng ;Shi Debin ;Liu Cheng ;and Shen Yunzhong;
A data processing method for the precision surveying of ballastless track highspeed railway is put forward:first,
choosing the compatible points in the control network by quasistable adjustment, then, adjusting the control network with the adjustment model of indirect observation in which the Baarda gross errors detection and Helmert variance component estimation are used. This kind of software for precision surveying data processing has been developed and tested by use of real surveying data.
The data processing results show that the adjustment accuracy and reliability of the control network can be improved with this method.
2008 Vol. 28 (1): 114-117 [
Abstract
] (
2075
)
PDF
(931 KB) (
3453
)
观测技术
118
BOTTLENECK AND RESEARCH STRATEGY OF DATA MANAGEMENT UNDER ITRF
Liu Zhengcai;Zhu Jianjun ;Xiao Benlin;Yi Chonghai ;and Wang Huaiyu
Data management of the largescale symmetrical matrices,as a bottleneck of the data management under International Terrestrial Reference Frame (ITRF) is discussed.We set up a symmetryrelationship model
to convert the halfstructural matrices into fullstructural relationship tables with fixed fields,then set up the symmetryrelationship database
in accordence with extended relationship principles.
This symmetryrelationship model can be used to improve the efficiency of the information management under ITRF.
2008 Vol. 28 (1): 118-122 [
Abstract
] (
2602
)
PDF
(390 KB) (
3464
)
123
VERTICAL FREE-AIR CORRECTION IN MARINE MAGNETIC SURVEY
Yu Bo ;Zhai Guojun ;Liu Yanchun ;Bian Gang ;and Bian Guanglang
The new concept of spatial correction of sensor has been brought out.The spherical magnetic field is simulated on the
undulating observation surface, vertical freeair correction is computed from harmonic series. The mean square error of crossingpoint discrepancy is also computed. It is concluded that the mean square error of crossingpoint is improved about 10 nT after the vertical freeair correction.
2008 Vol. 28 (1): 123-126 [
Abstract
] (
2006
)
PDF
(1013 KB) (
3262
)
127
COMPARISON AMONG CRUSTAL MOVEMENTS MEASURED WITH THREE SPACE TECHNIQUES
Rong Min;Jia Xiaolin ;and Sun Fuping
It is dicussed whether the systematic errors exist or not in crustal movement monitoring by three space observation techniques i.e. VLBI,SLR and GPS.Taking account of vertical change rate,the baseline length changing rates of colocated sites are solved by use of velocity of geocentric coordinations, and these rates are fitted
pair to pair,and then their correlativities are analyzed.The computed results show that the crustal movements measured by this three techniques are consistent with each others:the difference between the baseline length changing rates by VLBI and GPS is small, and about 10% larger than that by SLR,there is a constant difference of about 3 mm/a between those by GPS and SLR,but less than 1 mm/a between those by VLBI and SLR.
2008 Vol. 28 (1): 127-130 [
Abstract
] (
2053
)
PDF
(810 KB) (
3001
)
131
CONSTRUCTION OF VAST CORS FIDUCIAL STATIONS NETWORK BASED ON DELAUNAY TRIANGULATE NETWORKS
Mei Shengqiang ;Gong Xuli ;Yao Yibin ;Wang Zemin ;and Huang Shilei
As a core technique of CORS, GPS network RTK has been developed as one of the most important techniques of precise GPS positioning.
The positioning precision depends on the distance between fiducial stations and the distribution of the CORS fiducial station networks.
This paper discusses the joint networking of two neighbor networks, partial updating such as points deleting and inserting, and the selection of the best reference stations.Some optimization algorithms are put forward,which have been proved fast, efficient,simple and reliable.
2008 Vol. 28 (1): 131-135 [
Abstract
] (
2863
)
PDF
(1653 KB) (
3483
)
·
·
·
·
·
·
More...
·
·
·
·
·
·
More...
Copyright © 2013 Editorial office of jgg
Supported by:
Beijing Magtech
