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Journal

North China Earthquake Sciences

  • Supervisor:Hebei Earthquake Administration
  • Chief Editor:Dai Bosheng
  • Address:Shijiazhuang City, Hebei Province
  • ISSN:1003-1375
  • CN:13-1102/P
  • Sponsor:Hebei Earthquake Administration
  • Language:Chinese
Articles in press have been peer-reviewed and accepted, which are not yet assigned to volumes /issues, but are citable by Digital Object Identifier (DOI).
Display Method:
Algorithms·Examples and Big Data
Design and Implementation of Earthquake On-Site Information Management System
Shiping LOU, Rongguang JIA, Yuyong YANG, Jian PAN
2022, 40(2): 1-8, 28.   doi: 10.3969/j.issn.1003-1375.2022.02.001
[Abstract](191) [FullText HTML](68) [PDF 7728KB](1)
Abstract:
There are many working teams in the earthquake site, and it is difficult to share information among teams. In order to realize unified management of earthquake on-site information, an earthquake on-site information management system was designed and developed based on applet of WeChat. By analyzing and summarizing the post-earthquake organization system and sorting out the work requirements of the earthquake site, the functions of information reporting, information inquiry, task management, notice and announcement are realized, which can effectively manage all kinds of information on the earthquake site, expand the channel of information aggregation and improve the efficiency of information distribution. The system has been used in the daily work of Shandong Earthquake Agency, and the system has been used in the drill trigger and information management, and positive results have been achieved.
Earthquake Site Mobile Office Auxiliary System Design
Yafeng HE, Juan XU, Zhihua ZHOU, Kaihong FAN, Tie GU
2022, 40(2): 9-14.   doi: 10.3969/j.issn.1003-1375.2022.02.002
[Abstract](102) [FullText HTML](89) [PDF 5074KB](0)
Abstract:
According to the activities of different stakeholders on earthquake site, the information sharing needs for each bodies are clarified, and the information categories involved in earthquake site collaborative linkage are expounded. The architecture of the front and rear coordinated support mechanism for earthquake emergency response was constructed by applying relevant technologies, and the earthquake site mobile office auxiliary system was designed to realize internal instant communication, emergency information document output, working meeting minutes, front and rear coordinated interaction.
Population Flow Track after Earthquake Based on Mobile Phone Location Information
Lintong LI, Hao YU, Zuoliang HOU
2022, 40(2): 15-20.   doi: 10.3969/j.issn.1003-1375.2022.02.003
[Abstract](20) [FullText HTML](10) [PDF 6198KB](0)
Abstract:
In order to determine the population location and population movement trend after the earthquake with magnitude 4.6 occurred on May 22nd, 2016 in Chaoyang County, Chaoyang City, Liaoning Province, 57 890 mobile location information in the intensity radius was extracted, collected and sorted. Population data changes according to different times and different locations were analyzed, and the population track map and emergency evacuation route map were drawn in order to visualize the collected location data. The study may provide an effective way to obtain the population data after the earthquake and provides technical support for the post-earthquake disaster assessment and emergency services.
2022, 40(2): 1-2.  
[Abstract](6) [FullText HTML](8) [PDF 326KB](0)
Abstract:
Seismic Hazard·Disaster Prevention and Risk Management
Characteristics of Earthquake Disaster Loss of Transportation System in Yunnan Province
Zhaoliang JIA, Ruijie XU, Chuan ZHENG, Yan ZHUANG, Zhirou ZHAO
2022, 40(2): 21-28.   doi: 10.3969/j.issn.1003-1375.2022.02.004
[Abstract](21) [FullText HTML](10) [PDF 5439KB](0)
Abstract:
Based on the statistical and spatial analysis of earthquake disaster loss data of transportation system in Yunnan from 1998 to 2018, the law and regional difference of economic loss caused by earthquake disaster of transportation system are studied. Based on the seismic damage data of transportation system of historical earthquakes in Yunnan, the earthquake damage characteristics of transportation system are summarized. The results show that: ① The earthquake damage loss of transportation system increases with the increase of earthquake magnitude in Yunnan. And the relationship between them is a second-order polynomial rather than linear. ② The regional difference of earthquake damage loss of transportation system is obvious in Yunnan. And in the case of the same magnitude and earthquake intensity, the economic loss is the largest in Northeast Yunnan, that is the second in West Yunnan, and that is the smallest in South Yunnan. ③ The geological disasters induced by earthquake are the important reasons for aggravation of earthquake disaster of transportation system and traffic disruption.
Research Progress of Location based Services in China based on CiteSpace Knowledge Graph
Xinxin GUO, Benyong WEI
2022, 40(2): 29-38.   doi: 10.3969/j.issn.1003-1375.2022.02.005
[Abstract](85) [FullText HTML](76) [PDF 13658KB](1)
Abstract:
Based on the literature analysis function of CiteSpace software, this paper makes a comprehensive analysis of the literatures related to location based services in CNKI Chinese database from 2000 to 2020 from the aspects of the change of the number of articles published, the relationship of authors, the analysis of keywords and the change of research topics. The application of location based service in different research fields, especially in disaster research, is summarized. Finally, based on the analysis and summary of the research status of location based service in China, the future development trend and research fields that need to be strengthened are pointed out.
Quaternary Activity of the Eastern Section of the Cxian-Daming Fault
Yuanqian PENG, Zhijie RAN, Yuanzhe MAO, Kunjing ZHU
2022, 40(2): 39-47, 55.   doi: 10.3969/j.issn.1003-1375.2022.02.006
[Abstract](88) [FullText HTML](66) [PDF 6594KB](0)
Abstract:
The Cixian-Daming fault is one of the important faults in North China earthquake area. It is the seismogenic structure of the 1830 Cixian M7.5 earthquake. Based on the results of shallow seismic exploration, borehole and gravity data, this paper further determines the spatial distribution of the eastern section of Cixian-Daming fault and the buried depth of breakpoints on the fault. It is considered that the fault has the characteristics of segmented activity, and the latest activity age is the middle late Pleistocene. It is speculated that Cixian-Daming fault extends eastward to the south of Gucheng Town, Fanxian county.
Earthquake Case·Monitoring and Basic Research
Recognition and Analysis of Earthquake and Blasting in Shanghai Area based on Standard Time-frequency Transform
Yongqian SHAO, Guocheng WANG, Zhao PENG, Haiying YU, Peng WANG, Chengrui WANG
2022, 40(2): 48-55.   doi: 10.3969/j.issn.1003-1375.2022.02.007
[Abstract](130) [FullText HTML](61) [PDF 5780KB](0)
Abstract:
This paper takes the natural earthquakes recorded in the Shanghai area, the "4·20" Shanghai Central Blasting and the "4·26" Pudong Blasting as examples to analyze the standard time-frequency transform, and study the obtained standard time spectrum characteristics. By comparing the time-frequency spectrum, it can be seen that the resolution of the time-frequency domain of the NTFT-transformed data is significantly improved compared to the wavelet transform, and the signal characteristics of the seismic signal and background noise can be displayed more clearly. To a certain extent, it can effectively identify unobvious seismic waveforms and even seismic signals that are submerged by noise. The frequencies of natural earthquakes and blasting events in Shanghai are mainly distributed in the range of 20 ~ 40 Hz, with little difference in frequency range; natural seismic energy signals are mostly concentrated around 20 Hz, while blasting event energy signals are roughly concentrated between 30 ~ 40 Hz. Natural seismic energy distribution presents "multi-peak" characteristics, while blasting events show relatively "few peaks", mainly showing the characteristics of high-energy, small-scale impulse forms.
Establishment of Geomagnetic Interference Data Set based on Deep Learning
Mengqi CHE, Jun CHEN, Yunxiang YING, Hong ZHU, Mingming ZHANG
2022, 40(2): 56-61.   doi: 10.3969/j.issn.1003-1375.2022.02.008
[Abstract](68) [FullText HTML](71) [PDF 5175KB](0)
Abstract:
In view of the lack of data sets applied to geomagnetic interference classification, the data sets are constructed by processing the geomagnetic interference data, such as data cleaning and label classification, and trained and tested by using the mainstream deep learning algorithm. The experimental results show that under the framework of deep learning, the geomagnetic interference data and undisturbed data can achieve high accuracy classification results, and produce a classification model with certain effect; And its classification effect is related to the establishment of data sample set. A larger and cleaner data sample set will obtain better classification results and more detailed classification ability.
Assessment of Earthquake Monitoring Capability of Shanxi Seismic Network based on PMC Method
Xiangjun LIANG, Meiqin SONG, Fang LIU, Linfei LIU
2022, 40(2): 62-71.   doi: 10.3969/j.issn.1003-1375.2022.02.009
[Abstract](19) [FullText HTML](12) [PDF 6734KB](0)
Abstract:
To evaluate monitoring ability of Shanxi seismic network scientifically, taking the seismic observation report produced by Shanxi seismic network as the input, detection probability of 57 stations of Shanxi seismic network to earthquake events surroundings, synthetic detection probability and minimum integrity magnitude of seismic network are calculated by PMC method of integrity magnitude which is based on probability. It is illustrated by detection probability result of single station that PMC method relatively objectively reflects the capability of 57 stations to earthquake events, and that 5 stations in central Shanxi have high detection capability to earthquakes of small magnitude because of large density and reasonable layout of stations and that Stations located near the northern and the southern provincial boundary of Shanxi has relatively weak detection capability. The result of synthetic detection probability shows that the high detection probabilities are mainly concentrated at Xinzhou, Taiyuan, Jinzhong, Linfen and some areas of Datong and Changzhi of Shanxi, which are areas of the most strong monitoring capacity and that earthquakes of ML1.0 and below can be monitored in 80% regions of Shanxi, and that after sharing 17 stations in the neighboring province, minimum integrity magnitude MP near the northern and the southern provincial boundary of Shanxi reaches 1.7, whose monitoring capacity is weak, compared to the central region. To improve monitoring capacity of Shanxi seismic network, station density is needed to add in the northern and southern provincial boundary of Shanxi or more stations from the neighboring provinces are introduced to further optimize the station layout of Shanxi seismic network.
Interference Characteristics and Denoising Method for the Noise of Geomagnetic Data Caused by Rail Transit in Hohhot
Xing ZHAO, Xiaoyan ZHANG, Xudong WANG, Ronglian ZHANG, Lei SHU, Jinzhe BAO
2022, 40(2): 72-76.   doi: 10.3969/j.issn.1003-1375.2022.02.010
[Abstract](25) [FullText HTML](6) [PDF 5233KB](0)
Abstract:
With the development and construction of urbanization and the increase of population density in Hohhot, the Hohhot subway was officially put into operation in January 2020, which immediately caused serious high-frequency noise interference to the original waveform produced by Hohhot geomagnetic station. As a result, the effective utilization rate of geomagnetic data is greatly reduced. Through the analysis of the basic principle of the subway power supply system, the interference mechanism caused by the geomagnetic station is analyzed, and the basic characteristics of the interference are summarized. We also analyzed the frequency band range and spectrum characteristics of the subway interference by the method of wavelet transform. The energy density distribution in time-frequency domain is obtained. On this basis, BD wavelet decomposition method is applied to filter the interference frequency band, so as to effectively improve the quality of geomagnetic observation.
Anomalous Characteristics of Z Component of the Lithospheric Magnetic Field near the Epicenter A Few Days before Small Earthquakes
Deqiang LIU, Meng YUN, Zhaojing WANG, Bo LI, Haiyang ZHANG, Fenglong MAO
2022, 40(2): 77-81.   doi: 10.3969/j.issn.1003-1375.2022.02.011
[Abstract](20) [FullText HTML](8) [PDF 7347KB](0)
Abstract:
In order to take advantage of the short seismogenic time to capture effective seismomagnetic anomaly information, the lithospheric magnetic field variation models from April 2019 to April 2020 and from April to September 2020 were calculated after the Renqiu MS3.2 earthquake in Hebei and Helinger MS3.0 earthquake in Inner Mongolia. It is found that the relative anomaly of Z component near the epicenter is more obvious, and there is a certain area of high positive anomaly. After removing the components of trend change, the local outliers were about 2~3 nT, and the influence range was about 50 km. In addition, there were significant negative anomalies near the epicenter of Renqiu MS3.2 in the second stage, which were similar in scope and magnitude to those before the earthquake, and may be related to the recovery of the lithospheric magnetic field shape after the earthquake.
Application of Intelligent Guarantee System for Safe Operation of Seismic Network based on Internet in Seismic Stations
Xiaoyu SONG, Kexin WEI, Siyu CHANG, Mu CHEN
2022, 40(2): 82-86.   doi: 10.3969/j.issn.1003-1375.2022.02.012
[Abstract](82) [FullText HTML](91) [PDF 5954KB](0)
Abstract:
In this paper, we provide an intelligent guarantee system for safe operation of seismic network based on Internet of things and network communication technology, which can monitor and analyze the operation information of seismic station through unified operation platform and communication platform, including the operation parameters and status of power supply and distribution system, environmental system, security system, seismic monitoring equipment and transmission network. Through the system, data is shared to realize the rational distribution of resources of each unattended station. The application of the system in the remote monitoring of Zhangjiakou central seismic station has significantly improved the operation and maintenance efficiency of the station.
Application of Intelligent Signal Lightning Protection Technology in Seismic Stations
Hongbo SUN, Haibo CHEN, Nan ZHAO
2022, 40(2): 87-90.   doi: 10.3969/j.issn.1003-1375.2022.02.013
[Abstract](95) [FullText HTML](80) [PDF 5147KB](0)
Abstract:
According to the current situation of signal lightning protection in seismic stations, combined with the basic principle of intelligent signal lightning protection device, a scheme of real-time monitoring and management of equipment based on app technology is proposed, which is used to optimize the signal lightning protection technology in seismic stations. The system is installed in two seismic stations for trial operation, and the result shows that the monitoring system platform runs well. The operation and performance status of signal lightning protection can be seen in real time through the monitoring system, and the reason can be found faster when the equipment fails.
Influence of Short-term Construction of Shexian Station on Ground Tilt Observation
Yingjie ZHANG, Dong MA, Yuguo LI, Qiang XU
2022, 40(2): 91-96.   doi: 10.3969/j.issn.1003-1375.2022.02.014
[Abstract](87) [FullText HTML](62) [PDF 5441KB](0)
Abstract:
In this paper, we analyze the influence of soil load changes on the observation data of water pipe tipper during the construction of Shexian geomagnetic station in Hebei province in 2013 using ANSYS finite element three-dimensional load model. The model is composed of soil and rock, and is constructed according to the shape and scale of soil transported before and after the construction of geomagnetic station. The results show that the load variation caused by the construction of Shexian geomagnetic station has no obvious influence on the observation data of water pipe tipper.
RTL Anomaly Characteristics before the MS5.2 Guangxi Beiliu - Guangdong Huazhou Boundary Earthquake
Yongtong ZHENG, Wenjie LI, Shuyun LIU, Shaoran WANG
2022, 40(2): 97-104.   doi: 10.3969/j.issn.1003-1375.2022.02.015
[Abstract](89) [FullText HTML](64) [PDF 5619KB](0)
Abstract:
The regional time-length algorithm (RTL) was used to retrospectively examine the Ms5.2 earthquake at the boundary between Guangxi Beiliu and Guangdong Huazhou on October 12, 2019. The catalogue of earthquakes above ML2.0 measured by China Earthquake Networks from October 11, 2015 to October 10, 2019 was selected, and the selection scope was determined according to the region near the epicenter: 49 points were obtained in the range of 109.0°~ 112.0°E and 20.5°~ 23.5°N with step size of 0.5°. RTL values of each point were calculated. The analysis results show that there are 8 RTL anomalies at the epicenter and its north and south sides before the earthquake, and the RTL analysis method can be used as an anomaly index before the earthquake.
Discussion on the Present Situation and Development of Earthquake Standardization
Shaolin HE, Kechang ZHOU
2020, 38(3): 1-5.   doi: 10.3969/j.issn.1003-1375.2020.03.001
[Abstract](2667) [FullText HTML](1469) [PDF 644KB](1469)
Earthquake Risk, Loss Assessment and Insurance Options —A Case Study of Airport Terminals
Ying YANG, Xiao WANG, Na QU, Tianqi LIU
2021, 39(4): 1-7.   doi: 10.3969/j.issn.1003-1375.2021.04.001
[Abstract](1895) [FullText HTML](785) [PDF 1027KB](785)
Public Science Resource Management Platform for Earthquake Prevention and Disaster Reduction Based on Data Mining Techniques
Zhaoheng YE, Fanxin MENG, Jinxu YAN, Luyao YANG
2020, 38(1): 64-71.   doi: 10.3969/j.issn.1003-1375.2020.01.010
[Abstract](3245) [FullText HTML](1556) [PDF 1291KB](1556)
Construction of Temporary Seismic Network and Data Processing for the Shandong Changqing M4.1 Earthquake
Yajun LI, Jiaqi REN, Lu GONG, Zhihui ZHANG
2020, 38(S1): 95-98.   doi: 10.3969/j.issn.1003-1375.2020.S1.021
[Abstract](3546) [FullText HTML](1374) [PDF 717KB](1374)
2021, (1): 1-2.  
[Abstract](1563) [FullText HTML](735) [PDF 325KB](735)
Research and Application of 3D Seismic Exploration over Water
Quanzhang LIN
2020, 38(2): 40-44.   doi: 10.3969/j.issn.1003-1375.2020.02.007
[Abstract](2720) [FullText HTML](1311) [PDF 1016KB](1311)
Quality Analysis of GNSS Observation Data in Hebei Province
Yaya GUO, Yulin ZHANG, Junfeng REN, Donghui YANG
2021, 39(3): 58-65.   doi: 10.3969/j.issn.1003-1375.2021.03.009
[Abstract](1381) [FullText HTML](597) [PDF 9941KB](597)
Influence of Time-frequency Non-stationary Characteristics of Near-fault Pulse Ground Motion
YANG Xiaorui, CHEN Huiguo, LEI Yixin
2019, 37(4): 7-12.   doi: 10.3969/j.issn.1003-1375.2019.04.002
[Abstract](2649) [PDF 1280KB](197)
Focal Mechanism Solution of the Ji'nan M4.1 Earthquake Using the CAP Method
Tengchao DONG, Yanrui KANG, Xin CUI, Bo LI, Zhihui ZHANG, Chunpeng ZHANG
2020, 38(S1): 86-89.   doi: 10.3969/j.issn.1003-1375.2020.S1.019
[Abstract](832) [FullText HTML](893) [PDF 980KB](893)
The Application of Emergency Auxiliary Decision Support after Guangxi Jingxi MS5.2 Earthquake
Chongjie LI, Dewei ZHONG, Tufeng ZHU
2020, 38(S2): 140-143.   doi: 10.3969/j.issn.1003-1375.2020.S2.022
[Abstract](758) [FullText HTML](327) [PDF 8220KB](327)

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