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DBT94-2024: Report writing specifications for the field verification of observed seismic anomaly - Geoelectricity
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Report writing specifications for the field verification of observed seismic anomaly - Geoelectricity
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DB/T 94-2024
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Basic data | Standard ID | DB/T 94-2024 (DB/T94-2024) | | Description (Translated English) | Report writing specifications for the field verification of observed seismic anomaly - Geoelectricity | | Sector / Industry | Chinese Industry Standard (Recommended) | | Classification of Chinese Standard | P15 | | Classification of International Standard | 91.120.25 | | Word Count Estimation | 20,277 | | Date of Issue | 2024-03-01 | | Date of Implementation | 2024-09-01 | | Issuing agency(ies) | China Earthquake Administration | DBT94-2024: Report writing specifications for the field verification of observed seismic anomaly - Geoelectricity
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ICS 91.120.25
CCSP15
Earthquake Industry Standard of the People's Republic of China
Earthquake observation anomaly field verification report writing geoelectric
Released on 2024-03-01
2024-09-01 Implementation
China Earthquake Administration released
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Basic Provisions 2
5 Writing Requirements 2
Appendix A (Normative) Format requirements for abnormal on-site verification reports 8
Appendix B (Normative) Requirements for writing abnormal on-site verification work plan 9
Appendix C (Normative) Requirements for the preparation of the abnormal on-site verification work plan record form 10
Reference 11
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Earthquake Administration.
This document is under the jurisdiction of the Technical Committee for Earthquake Monitoring and Forecasting Standardization.
This document was drafted by. China Earthquake Networks Center, Anhui Provincial Earthquake Administration, Shaanxi Provincial Earthquake Administration, Jiangsu Provincial Earthquake Administration, Gansu Provincial Earthquake Administration,
Institute of Earthquake Prediction, China Earthquake Administration, Institute of Geology, China Earthquake Administration.
The main drafters of this document are. Xie Tao, He Kang, Fang Wei, Shen Honghui, Li Hongyu, Lu Jun, Du Xuebin, Tan Dacheng, Feng Zhisheng, Zhang Xuemin and Tang Ji.
Introduction
Earthquake geoelectric observation includes georesistivity, geoelectric field, natural electric field and electric field disturbance (electric field component in electromagnetic disturbance observation).
Observation devices are usually set up on the surface, and the polar distribution area is relatively large. Environmental changes in the polar distribution area and nearby areas will cause different effects on the observation data.
After the observation data show abnormality, conducting on-site verification of the abnormality is an important part of abnormality analysis.
After years of practice, standardized working procedures and analysis methods have been established for the on-site verification of geoelectric observation anomalies.
After the verification work is completed, it is necessary to compile an abnormal on-site verification report based on the on-site work content, the corresponding analysis process and the abnormal verification conclusion.
The abnormal site verification report has timeliness requirements. In order to improve the standardization of report writing,
In order to ensure peace and timeliness, it is necessary to formulate this document.
This document is based on the anomaly field verification work, anomaly analysis and prediction practice of earthquake geoelectric observation in my country for many years.
It plays a promoting role in the standardization of measurement anomaly verification and earthquake analysis and prediction work.
This document is one of the series of standards for the compilation of on-site verification reports on earthquake observation anomalies.
as follows.
--- Seismological observation abnormality on-site verification report writing seismograph;
--- Earthquake observation anomaly on-site verification report writing geomagnetism;
--- Earthquake observation anomaly on-site verification report writing geoelectric;
--- Preparation of on-site verification report of seismic observation anomaly underground fluid (DB/T 70-2018);
Earthquake observation anomaly field verification report writing geoelectric
1 Scope
This document specifies the basic requirements for the on-site verification report of seismic geoelectric observation anomalies, the main contents of data collection and analysis, and the arrangement
Format.
This document is applicable to the preparation of on-site verification reports of earthquake and geoelectric observation anomalies.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 7714 Information and bibliographic references - Rules for the description of bibliographical information
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
The process of collecting electrical parameters of the earth's medium using an observation system.
3.2
A physical quantity that characterizes the comprehensive conductivity of the medium within a specific detection range at the observation point. Its dimension is the same as that of resistivity, also known as apparent
Resistivity.
[Source. GB/T 18207.2-2005, 4.3.2]
3.3
geoelectricalfield
The electric field distributed on the surface of the earth is generated by the interaction between various non-artificial current systems inside and outside the solid earth and the earth's medium.
The electric field can be divided into the earth's electric field and the natural electric field.
[Source. GB/T 18207.2-2005, 4.3.1]
3.4
The geoelectric field is generated by the separation of positive and negative charges caused by various physical and chemical reactions inside the earth's crust.
[Source. GB/T 18207.2-2005, 4.3.1.2]
3.5
The geoelectric field observed in a specified frequency band.
3.6
Power supply electrode currentelectrode
In geoelectric observation, a grounding conductor connects the earth to the power supply wire and transmits the power supply current to the earth.
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