To improve the preprocessing quality of the Shandong geomagnetic network data which were disturbed by High Voltage Direct Current(HVDC) transmission,we summarized and analyzed the preprocessing condition of the Shandong Geomagnetic Network during the disturbance by the Ningdong HVDC transmission over the years.The relative difference detection function and preprocessing function of National Earthquake Precursor Data Processing System is applied.The result shows that the Ningdong HVDC transmission disturbances are generally removed after the data preprocessing.Meanwhile,there are still some problems,such as misjudge of the HVDC transmission disturbance,misjudge of the beginning and ending time of the disturbance,inaccuracy preprocess of the disturbance magnitude,etc.Corresponding solutions are proposed to the specific problems,such as the double-check of the data,slowly varying step function to reprocess,and reinforced research to disturbance characteristic of H and D.

Gravity data is essential data in the Earth's gravity field.The research on data quality evaluation and control has instructing and positive influence.This paper describes the gross detection method for Bouguer gravity anomaly,using database and MapX control technology,proposes an automatic detection method for gravity data.The correct of the method is proved in the application of the high precision vertical deviation and height anomaly model of China.

结合本单位承担和参与国家级、省部级重点科研和工程建设项目,详细阐述了项目档案的收集管理及规范组卷工作以及在档案整理过程中要遵守的档案规范、完善管理等相关制度.作为档案管理人员应主动介入、全面收集、合理组卷,进一步实现项目档案管理标准化、系统化和规范化.

The 72-hour post-earthquake rescue period have been a matter of priority in recent maj or earthquakes.The communication and network environments at the earthquake site are extremely complicated,so the conventional network access mode has difficulty guaranteeing real-time data and communication transmission from the site to the rear command center.In this stud-y,based on the post-disaster relief work and damage caused by several destructive earthquakes in recent years,and the Wenchuan and Yushu earthquakes in particular,we analyzed several key emergency communication technologies for application to earthquake rescue sites and make rec-ommendations on how to ensure effective communication at earthquake sites.We also studied the emergency communication system with respect to information flow at the rescue site,the emer-gency communication network,and the command center.

A method of solving a synthetic adjustment of absolute and relative gravity network using faint datum , the determination of the weights about absolute and relative gravity measurements , robust estimation weights ,the choice of relative gravimeter's parameters are described in details ,respectively . Some computing results show that , the accuracy of gravity network can be enhanced by faint datum adjustment ,and robust estimation can reduce anomalous data's weights , of which the average error estimate of the unknown gravity values is ± 13 .6 × 10-8 m/s2 , and random errors satisfy normal distribution .

以“陆态网络”部分连续运行基准站2012年观测数据为实验对象，对基准站坐标时间序列进行了建模拟合分析，并利用相邻30 d左右实测数据对随后3 d的测站位置进行分析预报。预报数据与实测数据的比较表明，可以较好地监测基准站的稳定性和运行状态。

This paper collected some research results of deformation monitoring at Taian seismic station, summarized earthquake reflecting ability of the deformation observation instruments,analyzed its monitoring capacity, proved that Taian seismic station plays an important role on earthquake monitoring and forecasting.

This paper makes comparison among seasonal non-linear variations of site coordinates of GPS,SLR and VLBI with the collocation site's coordinate vertical residuals.There is some comparability with those seasonal movements calculated by three space technologies.But the amplitude of vibration is different.The amplitude of vibration calculated with SLR is nearly the same with VLBI,but different with GPS,the maximum difference is about 7mm.And the errors may be related to the GPS seasonal systematic error.

分析泰安基准地震台YRY-4型钻孔应变仪仪器受不同位置抽水的影响,就地下岩石含水变化所产生的地形变干扰,简要分析地下水与地下岩石间的相互作用.这对地震前兆的研究有重要实用意义.

Based on data collected from a temporal seismic network, and in addition to the data from some nearby permanent stations, we investigate the velocity structure and seismicity in the Rongchang gas field, where significant injection-induced seismicity has been identified. First, we use receiver functions from distant earthquakes to invert detailed 1-D velocity structures beneath typical stations. Then, we use the double-difference hypocenter location method to re-locate earthquakes of the 2010 ML5.1 earthquake sequence that occurred in the region. The re-located hypocenters show that the 2010 ML5.1 earthquake sequence was distributed in a small area surrounding major injection wells and clustered mostly along pre-existing faults. Major earthquakes show a focal depth less than 5km with a dominant depth of ～2km, a depth of major reservoirs and injection wells. We thus conclude that the 2010 ML 5.1 earthquake sequence might have been induced by the deep well injection of unwanted water at a depth ～3km in the Rongchang gas field.

This article mainly introduces technical program for the land state network relying on the seismic industry network and building virtual network system on the basis of technical solutions,and techniques applied in the system,such as GRE tunnel,packaging,technologies and VPN.Taking the landing configuration design of network communication system in Shandong province as an example,combined with the author's implementation experience,and the problems encountered in project implementation and operation and maintenance are summed up.

This paper summarizes the seismic damage of the ground earthquake settlement and its influencing factors,collects and analyzes the codes relevant to seismic settlement of soft soil;Based on practical engineering drilling data,it analyzes and discusses the advantages and disadvamtages of the methods presented in different codes,proposes a "two-step narrow range quantization"-based discrimination method of earthquake settlement of soft soil and verifies this methos in engineering applications.

The higher-order statistics method is applied to processing the earthquake tidal deformation observation data.The tidal deformation observation data of Tai′an seismic station before the ML4.6 earthquake in the boundary region of Puyang and Xinxian counties on April 9,2006,are processed and analyzed.In the period of time before the earthquake,intervention of abnormal signal is found.On low point of the results has guiding significance to seismic anomaly information extraction.This method can extract some short-impending anomalies of seismic tidal.

Coupling with the data processing of Third-Order GPS Geodetic Network,unified adjustment is done using loose resolution obtained by Third-Order GPS Geodetic Network data processing and station network data.The improvement in coincidence of results was discussed.Minimum curvature grid interpolation method were used to calculate horizontal velocity field,of which the results were better comparing with the method of average velocity in district.High-precision velocity field can reduce error in epoch reduction process.

Rongchang area had exhibited low levels of natural seismicity,and there was no record of earthquake with ML5 in the history.However,following the injection of unwanted water from gas production,seismicity has increased dramatically and showed progressive increase of magnitude since July 1988,and an earthquake of M5.2 occurred in 1997.Rongchang area is thus an ideal site for studying seismicity induced by deep well injection.Unfortunately,there was only one seismic station in the area,and the research was limited by the poor detectability and hypocenter location accuracy.In order to make a thorough investigation on the injection-induced seismicity in the area,a temporal seismic network was installed in July,2008 under the cooperation of the State Key Laboratory of Earthquake Dynamics,Geological Survey of Japan and Chongqing Earthquake Administration.The seismic network consists of 6 stations,by which waveforms are continuously recorded.As a result,both the detectability and location accuracy are improved greatly.This paper presents a brief summary of the cooperative project and some preliminary results of recent seismicity in the area.

With installed capacity of 1.75 million kilowatts and total investment of 23 billion yuan,the Pengshui hydropower station on Wujiang-river is the biggest hydropower station of Chongqing.The dam of the station is about 116.5 meters high,the normal water level is up to 293 meters,and the reservoir capacity is 1.335 billion cubic meters.Researches show that the crust around the dam is stable,but the impoundment of the reservoir may induce moderate and strong earthquake in the potential seismic sources zone.On basis of teleseismic waveform data from 2008 to 2010 recorded by Pengshui Hydropower seismic network,this paper studies the crustal thickness and Passion's ratio of the area using receiver function method.The results show that the crustal thickness range from 43.9 to 47 km and the Poisson's ratio ranges from 0.20 to 0.24.

In order to study the present movement state of Shandong and surrounding blocks,GPS data from the Crustal Movement Observation Network of China(CMONOC) and the Continuous Observation GPS Network of Shandong Province was used and thus analyzed the baselines between GPS stations on different blocks.Using the K-L best straight line fitting and Slide Fourier method,we got the baselines changes by year cycle,and analyzed the trend of baselines crossing different blocks.In addition,we obtain the present crustal movement characteristics of Shandong and surrounding blocks,and analyzed the influence of Japanese earthquake of 9.0 on Shandong area.

根据所掌握的仪器映震能力、震前(后)大震特殊捕捉现象,以及对相同地震不同仪器映震的对比,可以看出,VP型宽频带垂直摆倾斜仪具备前兆仪器捕捉(反映)地震孕育及地震发生的相关作用,能够正确、客观的作用于地震前兆数据产出,对地震预测研究具有深远影响.

The deformation influenced by the short-impending power coupling between the atmospheric and the earth is analyzed in the paper.According to the pressure data recorded by Tai'an station,the short-impending stress reflected by the seismic precursory instruments and discussed their relations.

The varying characters of observations and disturbances of the cross fault short leveling,short baseline and MD fault creep testing apparatus at Anqiu seismic station are deseribed,and the relationship of above three methods using correlation analysis method is discussed.The results show that: the short leveling observations are affected by temperature and ground water level,and the observations are negatively correlated to temperature,positively correlated with ground water level.There is a obvious correlation between baseline and temperature,the related coefficient is about 0.95.The level orthogonal,skew and vertical direction observation of MD fault creep testing apparatus are all affected by temperature.In long time,there is a good correlation between the level orthogonal,skew observations and temperature,and the related coefficient is 0.98 and 0.99 respectively,but the correlations are more complex in short time,the changes of observed deformation are ahead of temperature changes.The vertical observations are different correlated with temperature in different seasons.There is a good coherence between short baseline and MD fault level orthogonal observation,we can do some comparative observations in suitable fields.And the short leveling and MD vertical direction observation have no obvious coherence.The above two observation methods are unfit to observe simultaneously when the MD apparatus is installed in semi-basement.