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
2007 Vol.27 Issue.专刊
Published 2010-09-20
地震活动性研究
1
ON MINIMUM 1D VELOCITY MODEL APPLIED IN THREE GORGES RESERVOIR AREA
Zhao Xu ;Li Qiang;and Cai Jin’an
Using 7 330 P arrivals and 3 524 S arrivals from 490 events observed by the Three Gorges seismic network,
the minimum 1D velocity model including P wave model, S wave model and station corrections is obtained with the Kissling method and then the model is applied to precise earthquake location. The residual RMS of the relocated events has reduced from 0.56 s to 0.41 s,
thus great improvement of the accuracy of hypocenter location has been made in the east, north, and vertical direction. The result indicates that the minimum 1D velocity model is better than other models.
2007 Vol. 27 (专刊): 1-7 [
Abstract
] (
1764
)
PDF
(2336 KB) (
2754
)
8
ON SENSIBILITY OF GPS BASELINE LENGTH AND DIRECTION CHANGES BEFORE AND AFTER KUNLUN MOUNTAIN EARTHQUAKE
Yan Wei ;Niu Anfu ;Jiang Zaisen ;and A Ponomarev
On the basis of the data of Crustal Movement Observation Network of China(CMONOC), the characteristics of baseline length and direction
changes before and after Kunlun Mountain earthquake are studied.According to the rupture direction of Kunlun Mountains earthquake and the characteristic difference in the different bearing of baseline change,the sensibility problem that related change of baseline length and direction to the earthquake are discussed theoretically. The study shows that: 1) If the baseline direction is consistent with the earthquake’s fracture direction then the sensibility of baseline length will be higher than baseline direction; 2)If the baseline direction is vertical to the earthquake’s fracture direction then the sensibility of baseline direction is higher than baseline length; 3)If the baseline direction makes angle 45° to the earthquake’s fracture direction then both the baseline length and baseline direction may evidently change before the earthquake.
2007 Vol. 27 (专刊): 8-11 [
Abstract
] (
1465
)
PDF
(1302 KB) (
2462
)
12
ON WAVE VELOCITY RATIO(Vp/Vs) IN BADONG AREAAFTER IMPOUNDMENT OF THREE GORGES RESERVOIR
Chen Junhua;Gan Jiasi ;Li Puli ;Xue Junrong ; Li Feng ;and Li Yin
The multistation method is applied to calculate wave velocity ratio and its coefficient of earthquakes above ML2.0 in Badong area after the impoundment of the Three Gorges reservoir. The result shows that the variations of wave velocity ratio are related to the shallow epicenters,fracture growing and infiltration diffusion of water in the area. It is shown that the ratio decreases in the dilatancydiffusion phase and increases before the earthquake .The area is rich in underground water so the wave velocity ratio is higher than that in some other area.
2007 Vol. 27 (专刊): 12-14 [
Abstract
] (
1745
)
PDF
(1107 KB) (
3056
)
15
ON SEISMOGENIC AND ITS BACKGROUND TECTONICS OF JIUJIANGRUICHANG SEISMIC SEQUENCE
Wang Dun ;Xiao Heping ;Yao Yunsheng ;Song Chen ;and Li Heng
Through a variety of means,such as remote sensing,distribution of aftershock and field exploration,it is proved that in the north to Ruichang there is a group of NNW fault——Wushan buried fault which dissecting through the upper crust at least and then it is proposed that the Jiujiang-Ruichang earthquake may result from the NE RuichangWuning fault together with the Wushan buried fault,concretely,the mainshock is controled by the former and the aftershock by the later.
2007 Vol. 27 (专刊): 15-20 [
Abstract
] (
1804
)
PDF
(2467 KB) (
2883
)
21
SUMMARIZATION OF RESEARCH ON SLOW EARTHQUAKE
Wang Dijin;Li Zhengyuan;and Lu Pinji
The identification and location，generation of slow earthquake and their physical mechanism of occurrence are summarized.
2007 Vol. 27 (专刊): 21-25 [
Abstract
] (
1382
)
PDF
(1224 KB) (
3360
)
26
ON MINI-EARTHQUAKE SWARM OCCURRED IN SEPTEMBER, 2006 IN XIETAN, ZIGUI COUNTY
Luo Junqiu;and Xue Junrong
The mini-earthquake swarm occurred during Sep.17-22, 2006 in the west of Xietan town, Zigui county. The ML1.8 earthquake occurred at 21:10 of Sep.20, 2006 was strongest one among them.
The analysis of related data shows that the epicenters of this earthquake swarm are concentrated in the west of landslide broken belt along coal bed of Xiangxi stratum between old Shimen village and old Xietan town, the focal depth is within 0.5 km above sealevel,the main focal mechanism solutions are positive inclinedsliding; the best frequency of this earthquake swarms amplitude spectrum is concentrated at 2 Hz,it can be concluded that this earthquake swarm is minecollapsed earthquakes which is effected by the earth’s surface layer gravity, and this swarm includes several tiny landslides of shallow layer.
2007 Vol. 27 (专刊): 26-30 [
Abstract
] (
1515
)
PDF
(2346 KB) (
2472
)
31
APPLICABLE STUDY OF EIGEN-GRACE02S GRAVITY MODELON DETECTION OF EARTH’S CRUST TECTONICS
Wang Leyang;Zhu Jianjun;and Zhu Ziqiang
This paper analyzes the important role of Bouguer gravity anomaly in the detection of the earth’s crust tectonics, and the disadvantages of Bouguer gravity anomaly that come from the gravimetry on the ground in the present geology and geophysical prospecting
and puts forward a SST gravity model,for example, EIGENGRACE02S, from pure gravity satellite data and analyzes its advantages and applicability. With the development of space technology and for surmounting the disadvantage of the concept of ‘satellite gravity anomaly’, this paper puts forward the concepts of ‘real satellite gravity anomaly’ and ‘pseudo satellite gravity anomaly.
2007 Vol. 27 (专刊): 31-34 [
Abstract
] (
1590
)
PDF
(504 KB) (
3054
)
35
GROUND-BASED GPS IN REMOTE SENSING OF WATER VAPOR:DEVELOPMENT AND APPLICATION
Guo Jie;and Li Guoping
This paper reviews the development progress of GPS in remote sensing of water vapor and systematically analyzes the present situation of the applications of water vapor detecting by GPS in meteorology,such as the forecast of atrocious weather,the initial fields of mesoscale numerical prediction model,the monitoring and the analysis of global climate changes, the weather modification and the analysis of 3D water vapor layer.
2007 Vol. 27 (专刊): 35-42 [
Abstract
] (
1611
)
PDF
(544 KB) (
4091
)
43
ON DESIGN PROCEDURES OF SUBSIDENCE OBSERVATION IN LIUDAOWAN COAL MINE AREA
Zhang Bing;Cui Ximin;Zhao Rui;Ma Deming;and Zhang Hongjie
The design procedures, the observation content, the observation method and the precision of the survey instruments of the subsidence observation in the western area of Liudaowan coal mine are introduced and the expected results of the observations analysis are deseribed as well.
2007 Vol. 27 (专刊): 43-46 [
Abstract
] (
1736
)
PDF
(655 KB) (
3277
)
47
APPLICATION OF WIRELESS NETWORK BASED ON VPN IN EARTHQUAKE PRECURSOR STATION NETWORK
He Anhua;Zhao Gang;Guo Miaoxi;and Guo Bailin
The data communication using the wireless network (CDMA/GPRS) based on the VPN technology can provide a steady, safe and cheap net platform for conneting the precursor instruments to the internet.This way, the computers of the station network center and the instruments at stations are as in a LAN, the operation will become very easy to do.
2007 Vol. 27 (专刊): 47-51 [
Abstract
] (
1631
)
PDF
(1758 KB) (
3310
)
52
DISCUSSION OF GPS CONTROL NETWORK BUILDING AND DATA QUALITY GUARANTEE
Wei Zhiwen
The problems how the GPS control net is builded and the data quality guarantee is made are discussed.
2007 Vol. 27 (专刊): 52-56 [
Abstract
] (
1537
)
PDF
(530 KB) (
3358
)
56
ANALYSIS ON BASIC DATA OF ML4.7 EARTHQUAKE SEQUENCE IN SUIZHOU，HUBEI
Li Feng;Li Yin;Xue Junrong;and Chen Junhua
On the basis of the monitoring and macroexamination, the spacetimeintensity characteristics and the genetic mechanics
of the Suizhou ML4.7 earthquake are analysed and discussed. At the same time ,the seismic waves are compared with the blasting vibration recorded at the seismostation in Suizhou. From the result of analyzing the basic data and focal mechanism, main seismogenic
tectonic of the seismic sequence is the NW fault zone in this area,meanwhile it is also related to a group NE faults.
2007 Vol. 27 (专刊): 56-61 [
Abstract
] (
1624
)
PDF
(1146 KB) (
2536
)
62
ON GENESIS OF YESANGUAN MICRO-EARTHQUAKESIN THREE GORGES AREA ON YANGTZE RIVER
Di Lisha ;and Chen Junhua;
The microearthquakes in Yesanguan region have the features of intermittency and low frequency. They distribute on the south side of Xianglong hill anticline——the watershed between Yangtze river and Qingjiang river.
Having studied the parameters of the microearthquakes in recent years, we find that the genesis is different from the natural earthquake and reservoir earthquake. It seems to be caused by the occurrence of coal mining goaf where the
shallow layer’s stress of the earthsurface converges and strain accumulates, leads the rock body become unstable and induce these earthquakes.
2007 Vol. 27 (专刊): 62-66 [
Abstract
] (
1566
)
PDF
(1331 KB) (
2806
)
67
GRAVITATIONAL EFFECT OF INDONESIA Ms8.7 EARTHQUAKE REFLECTED IN GRAVITY TIDE OBSERVATION IN CHINA CONTINENT
Yu Jielin;Wang Xiaoquan;Zhang Xinlin;and Li Hui
The gravity data at the stations of China observed before and after the Indonesia Ms8.7 earthquake occured on Dec. 26,2004, are analyzed.On the basis of the monthly variation of the tidal factor of M2 wave and the response ratio to loading and unloading,the possible tendentious gravity change caused by the earthquake is discussed.The analysis shows that the tendentious change of the tidal factor of M2 wave caused by the Indonesia Ms8.7 earthquake is obvious but the trends are different for the stations in different place.
2007 Vol. 27 (专刊): 67-69 [
Abstract
] (
1466
)
PDF
(1396 KB) (
2665
)
70
ANALYSIS OF LONG-MEDIUM-SHORT-TERM TENDENTIOUSANOMALY OF TILT DATA AT SHESHAN STATION BEFORE SUMATRA 8.7 EARTHQUAKE
Ni Youzhong;Chen Jun;Zhao Lun;Yang Qiming;Hao Changan;Shen Weidong;Zhong Weixing;Zhang Huan;and Zhu Guohao
By use of many mathematic methods,such as conventional differentiation,analysis of trend rate,the longmediumshortterm anomaly patterns and coseismic step of the tilt observations at Sheshan station before the Sumatra 8.7 earthquake,Inonesia are analyzed comprehensively.
2007 Vol. 27 (专刊): 70-73 [
Abstract
] (
1554
)
PDF
(2023 KB) (
2746
)
74
RECORDING EARTHQUAKE ABILITY OF WATER LEVEL OF DEEP WELL AND EARTHQUAKE PREDICTION
Hu Xianming
The recording earthquake ability Mst of the water level of a deep well can flect the state of underground stress field,
which is the magnitude difference between Mt and Ms,where Ms is determined by a regional seismostation network,
Mt is the magnitude of a coming earthquake from the level data of a deep well.
1 559 water level data related to earthquake of three deep wells is used to calculate the earthquake magnitudes and then these Mt are compared with the earthquake magnitudes Ms.
These results show that these Mt are with the confidence level of 97.5%, the Rvalue is 0.5 and the Wallenvalue is 0.54. 623 maximum values of each month is used and these Mt are with confidence level of 97.5%, the Rvalue is 0.42 and the Wallenvalue is 0.42.
In the 16 years period past, the practice shows that the water level observation data analysis is a helpful method for earthquake prediction.
2007 Vol. 27 (专刊): 74-78 [
Abstract
] (
1575
)
PDF
(1025 KB) (
2769
)
79
RECOGNITION OF DISTURBANCE AND SEISMIC ANOMALY FROMTILT TIDE DEFORMATION AT CHONGQING SEISMOSTATION
Chen Min ;Guo Xin ;and Zheng Xudong
The observations of the horizonal penbulum tiltmeter at Chongqing station since over 10 years before are arranged systematically.The feature,mechanism and magnitude of disturbance of temperature,rainfall,dewatering and loading variation are analyzed and summerized.The
acting law of disturbance,the recoginition and elimination methods are determined.The anormalies recorded by the horizontal pendulum tiltmeter at Chongqing station on the 4th day before the M5.4 earthquake(1989-11-20) occured in Tongjing about 67 km away from the station are recoginited as the earthquake precursor.
2007 Vol. 27 (专刊): 79-83 [
Abstract
] (
1703
)
PDF
(1748 KB) (
3176
)
84
ANALYSIS OF WATER TEMPERATURE CHARACTERISTICS OF MONITORING WELL NETWORK IN THREE GORGES AREA BEFORE AND AFTER SECOND IMPOUNDING
Mei Jianchang;Yao Yunsheng;Zhang Weihua; and Li Jiaming;
Taking the data of water temperature of the underground water monitoring well network in the Three Gorges area in 2006 for analysis the author has summarized the dynamical change of this data in the course of the secondphase impounding on the basis of the analysis of the normal status of the water temparature and the affecting factors.It is found that the effect of the reservoir impounding on the dynamics of the water temparature is evident.
2007 Vol. 27 (专刊): 84-88 [
Abstract
] (
1555
)
PDF
(1340 KB) (
3721
)
89
QUALITY ASSESSMENT OF TILT TIDE OBSERVATION WITH DIGITAL WATER TUBE TILTMETER AT SHUANGYANG SEISMOSTATION IN CHANGCHUN
Yu Tianlong ;Chen Gengqi ;Li Haiyan ;Fu Yanfeng ;Zhang Kejia ;and Zhang Zongfeng
The data of tilt tide observed during 2001-2006 with DSQ water tube tiltmeter at Shuangyang seismostation is assessed
in quality.The test results indicate that the observations are continuous,the conditions of instrument are stable,annual zero drift and change amplitude are small and the noise level is low.
2007 Vol. 27 (专刊): 89-92 [
Abstract
] (
1621
)
PDF
(638 KB) (
2823
)
观测技术
93
ON PRERECEIVE CHANNEL OF HAND-HOLD LASER RANGEFINDER
Xia Jiening
A design procedure of preamp circuit is introduced
comprehensively and a singlesupply amp circuit for the particularity of portable devices are proposed to solve the problems about receive channel of handhold laser rangefinder.
2007 Vol. 27 (专刊): 93-95 [
Abstract
] (
1429
)
PDF
(762 KB) (
3505
)
96
AN INDOOR VERIFICATION EQUIPMENT FOR DIGITAL LEVELER
Lu Jie;Fu Huiqing;Ou Tonggeng;and Zheng Yong;
As a highprecise surveying instrument,digital leveler plays a very important role in leveling and deformation surveying fields. However, the verification of digital leveler is a premise for its normal running.For solving the problem of indoor verification ,we introduce a new domestic verification instrument.
2007 Vol. 27 (专刊): 96-97 [
Abstract
] (
1477
)
PDF
(479 KB) (
3413
)
98
OPERATING PRINCIPLE AND ERROR SOURCE OF A NEW TYPE OF CCD PHOTOELECTRIC AUTOCOLLIMATOR
Ou Tonggeng;Chen Zhigao;Yang Boxiong;and Fu huiqing;
The operating principle of the newtype photoelectric autocollimator is introduced and its errors is analyzed.
2007 Vol. 27 (专刊): 98-100 [
Abstract
] (
1508
)
PDF
(480 KB) (
5145
)
101
ON OBSERVATIONAL TECHNOLOGY OF NUCLEAR ISLAND DEFORMATION
Chen Zhigao;Xiang Dapeng;Ou Tonggeng;Yang Boxiong;Liu Haibo;and Du Weimin
According to the characteristics and requasts of the deformation observation of the nuclear power station,the design scheme of the nuclear island deformation monitoring system is presented.
The whole constitution and the function of the design, the functional principle and the arrangement of sensor are introduced,thus the theoretical basis and the actual case for the similar monitoring system are provided.
2007 Vol. 27 (专刊): 101-103 [
Abstract
] (
1618
)
PDF
(918 KB) (
2815
)
104
ON PLUMBNESS IN CALIBRATION COURSE OF PLUMB ALIGNER
Jia Minqiang;Liu Haibo;and Fu Huiqing;
As an optical instrument, plumb aligner is used to give a plumb line, but up to now there is no accurate concept to indicate its plumbness. This paper analyzes the “coaxiality” and “standard deviation in one measurement”, furthermore, defines the plumb angle
p.
2007 Vol. 27 (专刊): 104-106 [
Abstract
] (
1679
)
PDF
(827 KB) (
3364
)
107
TEMPERATURE INFORMATION ACQUIRING SYSTEM BASED ON CIP-51 SINGLE-CHIP
Zhang Mingyang;and Guo Tangyong
The characteristics of the CIP51 singlechip of C8051F is discribed and then the temperature information acquiring system based on the singlechip C8051F330 by use of the onewire bus is designed.
2007 Vol. 27 (专刊): 107-110 [
Abstract
] (
1575
)
PDF
(861 KB) (
4215
)
111
DESIGN OF TCM-3 THERMOMETER AND ERROR ANALYSIS
Yang Jiang;and Lu Chongwu
Combining the characteristics of stability and duplication of Pt100 platinic resistance,limited by the application enviroument,the TCM3 thermometer uses the Pt100 platinic resistance as the sensor.
Through the design of the following electric circuit, the TCM3 thermometer has achieved the measuring accuracy request,and
the theoretic analysis on error examines the reliability of the measuring accuracy.
2007 Vol. 27 (专刊): 111-115 [
Abstract
] (
1477
)
PDF
(575 KB) (
2873
)
116
ON DATA PROCESSING OF PET
Zhang Xinlin;Li Hui;Wang Xiaoquan;and Liu Ziwei
A method of data fitting by combining chebyshev polynomial with least square for extracting minutely and hourly radues from the second values of gravity tide observations is reported,which can be used for automatically eliminating wrong data and so obtaining reliable data which will be utilized in harmonic analysis efficiently.
2007 Vol. 27 (专刊): 116-121 [
Abstract
] (
1641
)
PDF
(1254 KB) (
2845
)
122
DESIGN OF A NEW EARTHQUAKE DATA ACQUISITION SYSTEM
Zhang Bo;Zhou Yunyao;and Wu Tao;
The design scheme(including hardware and software design) of a new earthquake data acquisition system is introduced.
The system has the function of realtime earthquake monitoring and alarm,it is allpurpose,antijamming and cheap.
2007 Vol. 27 (专刊): 122-124 [
Abstract
] (
1548
)
PDF
(815 KB) (
3072
)
125
ADVANTAGE AND FLEXIBILITY OF WebGIS MIDDLEWARE IN DEVELOPMENT OF WebGIS
Qiu Yongbing;and Chen Xinghua
At present,the development of WebGIS which takes the ArcGIS server as the core technique and is based on the control from ESRIC is limited to a certain extent and it is becomes unfavourable.For breaking away from the limit,we have developed the middleware to recover the advantage and flexibility of WebGIS.
2007 Vol. 27 (专刊): 125-128 [
Abstract
] (
1640
)
PDF
(1179 KB) (
3057
)
129
DRAWING EPICENTRE DISTRIBUTION MAP BASEDON SECONDARY DEVELOPMENT OF MapGIS
Li Heng;Yao Yunsheng;and Chen Shujun
MapGIS does well in map drawing, but appending dots representing epicenter in seismic tectonic map is an actually tedious work.
A method that concludes following steps is presented. Firstly,convert the text file recording earthquake information into the clear text of MapGIS, sencondly,create graphic file from the clear text,finally, connect attribute for dynamically marking. According to the above procedure, taking Microsoft VC++6.0 as the tool, drawing epicentre distribution map based on secondary development of MapGIS can be realized fast and accurately.
2007 Vol. 27 (专刊): 129-132 [
Abstract
] (
1670
)
PDF
(747 KB) (
3224
)
133
SEISMIC ALARM WITH METHOD OF DETECTINGBOTH PERIOD AND AMPLITUDE
Zhang Nian;Yin Suwen;and Zhang Zhijun
The disadvantages of seismic alarm only based on the amplitude of seismic wave are analyzed.Through the comparison between the alarm mechanisms with digital and analog seismographs,the method for seismic alarm with the method of detecting both the period and amplitude is proposed.
2007 Vol. 27 (专刊): 133-135 [
Abstract
] (
1516
)
PDF
(420 KB) (
2861
)
136
ANALYSIS ON TEST RESULTS OF DIFFERENTIAL EXTENSOMETER
Xu Chunyang;Yang Jiang;Du Weimin;and Lu Chongwu
The differential extensometer made up of dualsensor,which has already installed at about 100 seismotations all over China is introduced.
The results of the test for 3 months show that the antiinterference capability of this type of extensometer has been impoved much more then those in common use.
2007 Vol. 27 (专刊): 136-138 [
Abstract
] (
1526
)
PDF
(1075 KB) (
2793
)
139
ON METHOD FOR REALIZING PLUMB
Jia Minqiang;Liu Haibo;and Fu Huiqing;
The important role and significance of plumb in scientific research and produce are discribed. Furthermore some representative and practical methods for plumbing are analyzed and compared between each other.
At the end, a new method for realizing plumb is proposed.
2007 Vol. 27 (专刊): 139-141 [
Abstract
] (
1608
)
PDF
(871 KB) (
4199
)
142
SOFTWARE FOR ALARM AT RECORD BREAKUP OF DIGITAL SEISMOGRAPH
Zhang Nian;Yin Suwen;and Zhang Zhijun
The software for the alarm at record breakup,which can be used under operation system UNIX and Windows and has been developed based on the seismograph architecture in common use at stations is introduced in this paper.
2007 Vol. 27 (专刊): 142-143 [
Abstract
] (
1978
)
PDF
(693 KB) (
2577
)
144
A SUCCESSFUL CASE OF R&D CONSTRUCTION OF GIS SYSTEM IN LOCAL TELECOMMUNICATIONS NETWORK
Chen Wei ;and Lu Jie
Begining with the analysis of the features and the present situation of telecommunication industry and communication network
this paper describs the essentiality of introducing into the GIS for establishing the communication network geographic information system. Meanwhile, it chooses the basic software platform of excellent domestic GIS for second development according to the actual demand of planning,contruction and maintenance management of local telecommunication network. Moreover the scheme of establishing local telecommunication network GIS has been expounded in brief. At last,the introduction of the application of the system is given.
2007 Vol. 27 (专刊): 144-146 [
Abstract
] (
1544
)
PDF
(1030 KB) (
2748
)
147
APPLICATION OF GIS TO DYNAMIC RESOURCE MANAGEMENT OF LOCAL TELECOMMUNICATION NETWORK
Chen Wei ;and Lu Jie
The concrete content and the mode of the successful application of GIS to the dynamic management of local telecommunicaion network resources are expounded.
2007 Vol. 27 (专刊): 147-149 [
Abstract
] (
2012
)
PDF
(348 KB) (
3019
)
150
APPLICATION OF EXCEL ON DATA PROCESSING OF DEFORMATION OBSERVATION
Chen Zhigao;Zhang Zhifeng;Chen Jin;Ling Mo;and Fu Huiqing
On the basis of the data processing function of Excel whose
secondary development is done in the language Visual Basic and is connected to the Excel interface by macro form and then the data processing of deformation observation network is realized.
2007 Vol. 27 (专刊): 150-152 [
Abstract
] (
1551
)
PDF
(1022 KB) (
3013
)
153
SOME TECHNICAL PROBLEMS IN INSTALLATION OF DSQ WATER TUBE TILTMETER
Chen Gengqi;Yu Tianlong ; and Yin Chuanbing
Some technical problems which should be payed close attention to in installation of DSQ water tube tiltmeter,such as the installating conditions in cave,the hermetic and insulating facilities,the removal of bubbles from water pipes,the IP calibration
are discussed in this paper.
2007 Vol. 27 (专刊): 153-155 [
Abstract
] (
1716
)
PDF
(634 KB) (
2922
)
156
ANALYSIS ON STATION MAINTENACE AND MANAGEMENT OF EXTENSOMETER
Yuan Qu;Zhang Hui;Huang Zhong;and Wang Hui;
The work experience for installation,setup and test,maintenance and management about the SSY extensometer at Yichang seismostation is summed.
2007 Vol. 27 (专刊): 156-158 [
Abstract
] (
1352
)
PDF
(739 KB) (
3449
)
159
MANUFACTURE AND APPLICATION OF CW-CGⅡ PERPENDICULAR TELEMETERING
Li Nongfa ;Liu Danyuan ;and Li Cuixia
The manufacture state and the function of CWCGⅡ perpendicular telemetering instrument are introducted.
2007 Vol. 27 (专刊): 159-160 [
Abstract
] (
1433
)
PDF
(516 KB) (
2536
)
·
·
·
·
·
·
More...
·
·
·
·
·
·
More...
Copyright © 2013 Editorial office of jgg
Supported by:
Beijing Magtech
