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DBT106-2025: Specifications for the operation of seismic networks - Geoelectric observation
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| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| DB/T 106-2025 | English | 459 |
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Specifications for the operation of seismic networks - Geoelectric observation
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Basic data | Standard ID | DB/T 106-2025 (DB/T106-2025) | | Description (Translated English) | Specifications for the operation of seismic networks - Geoelectric observation | | Sector / Industry | Chinese Industry Standard (Recommended) | | Classification of Chinese Standard | P15 | | Classification of International Standard | 91.120.25 | | Date of Issue | 2025-07-31 | | Date of Implementation | 2026-01-01 | | Issuing agency(ies) | China Earthquake Administration | DB/T 106-2025: Specifications for the operation of seismic networks - Geoelectric observation---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Published on 2025-07-31
Implemented on 2026-01-01
CCS P 15ICS 91.120.25
Earthquake Network Operation Specifications and Geoelectric Observation
Earthquake Industry Standards of the People's Republic of China
China Earthquake Administration issued a statement.
Preface III
Introduction IV
1.Scope 1
2 Normative References 1
3.Terms and Definitions 1
4.Work Tasks 2
5.Observation station in operation 2
6.Provincial-level business center operation 5.
7.National-level business center in operation 6.
Appendix A (Normative) Inspection Contents of Geoelectric Observation Stations 9
Appendix B (Normative) Calibration Methods for DC Ground Resistivity Meters and Ground Electric Field Meters 11
Appendix C (Normative) Methods for Distinguishing Gross Differences and Abrupt Changes in Earth Resistivity 12
Appendix D (Informative) Outline for Writing Annual Observation Reports for Geoelectric Observation Stations 13
Reference 15
Table of contents
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Earthquake Administration.
This document is under the jurisdiction of the Technical Committee on Standardization of Earthquake Monitoring and Forecasting.
This document was drafted by the Gansu Provincial Earthquake Administration, the Institute of Earthquake Prediction of the China Earthquake Administration, and the China Earthquake Networks Center.
The main drafters of this document are. Tan Dacheng, An Zhanghui, Fan Yingying, Wang Lanwei, Ye Qing, Xi Jilou, Fan Ye, Zhang Yu, Wang Jianjun, Xie Tao, and Wang Xiao.
Introduction
Earthquake geoelectric observations in my country mainly include georesistivity observations, geoelectric field observations, and electromagnetic disturbance observations. From the 1960s to the present, China...
China has established a geoelectric observation network consisting of approximately 90 georesistivity observation stations and approximately 110 geoelectric field observation stations. These stations are mainly distributed in...
In seismically active zones such as the North-South Seismic Belt, the North China Seismic Belt, and the Northwest Seismic Belt, although there are many electromagnetic disturbance observation stations, their observation methods and techniques vary.
Still under development, the vast majority of these systems have not yet been formally incorporated into the geoelectric observation network. Therefore, the technical content of this document only includes georesistivity and geoelectricity.
Technical requirements for the operation of electric field observation stations.
For a long time, the operation of my country's geoelectric observation stations has been mainly based on the "Technical Specifications for Digital Observation of Earthquakes and Precursors" formulated in.2001.
This document summarizes my country's ground radio network operation and management methods and detailed rules, including the "Fan (Trial) Electromagnetic Observation" and other relevant documents.
Based on years of operation and maintenance experience, and taking into account the development of geoelectric observation technology, this system targets all levels of nodes in the geoelectric observation network (geoelectric observation stations, provincial business stations, etc.).
It was formulated based on the operation and maintenance requirements of the central and national-level business centers.
Earthquake Network Operation Specifications and Geoelectric Observation
1 Scope
This document specifies the technical requirements and methods for the operation of earthquake geoelectric observation networks.
This document applies to the operation of geoelectric observation networks at geoelectric observation stations, provincial operational centers, and national operational centers.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are listed below.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
document.
GB/T 19531.2 Technical requirements for the observation environment of seismic stations - Part 2.Electromagnetic observation
DB/T 29.1-2008 Technical Requirements for Seismic Observation Instruments Connecting to the Network - Geoelectric Observation Instruments Part 1.DC Geoelectric Resistivity Meters
DB/T 29.2-2008 Technical Requirements for Earthquake Observation Instruments Connecting to the Network - Geoelectric Observation Instruments Part 2.Geoelectric Field Instruments
DB/T 33.1-2009 Seismic Geoelectric Observation Methods - Ground Resistivity Observation - Part 1.Single-pole Spacing Observation
DB/T 51-2012 Earthquake Precursor Database Structure and Station Observation
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Measurement system
A collection of instruments for measuring earth resistivity or earth electric field, and auxiliary equipment to support the stable operation of the instruments.
3.2
Device system configuration system
An assembly of electrode systems and facilities that transmits ground resistivity or ground electric field signals to measuring instruments.
Note. This mainly includes the relative positions of the electrodes in the observation site, as well as facilities such as electrodes, external lines, disconnectors, and wiring panels.
3.3
calibration and detection system
A collection of instruments and equipment used to calibrate and test a measurement system (3.1), or to test a device system (3.2) or site conditions.
Note. This mainly includes DC potentiometers, standard batteries, megohmmeters, grounding resistance testers, and oscilloscopes.
3.4
observation system
A collection of measurement systems (3.1), device systems (3.2), and calibration and testing systems (3.3).
3.5
Data preprocessing
The operation involves removing or correcting abnormal data in the raw observation data caused by instrument malfunction, interference, or human operation.
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