DB/T 95-2024 in English
VALIDReport writing specifieations for the field verification of observed seismieanomaly-Geomagnetism
- Issued on:2024-03-01
- Implemented on:2024-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
本文件规定了地震地磁观测异常现场核实报告的基本要求、资料收集与分析的主要内容以及编排格式。
本文件适用于地震地磁观测异常现场核实报告的编写。
Introduction
Analysis of the core content of the standard
As an important part of the earthquake monitoring and prediction standardization technical system, this document systematically regulates the requirements for the preparation of field verification reports of geomagnetic observation anomalies for the first time. The standard is based on the many years of practice of my country's geomagnetic observation network and has established a technical framework that includes 4 types of basic regulations and 5 chapters of writing requirements.
Comparison of key technical elements
| Element dimension | Site anomaly | Regional anomaly |
|---|---|---|
| Naming rules | Includes the abbreviation of the observation station | Includes the name of the anomaly area |
| Spatial scope | Single station data | Multi-station joint solution |
| Verification period | Anomaly period + lookback ≥ 3 months | |
Geomagnetic anomaly classification system
The classification system established in Appendix B of the standard includes:
- Lithospheric magnetic field anomaly: detected by geomagnetic absolute observation instrument
- Geomagnetic solar diurnal variation anomaly: analyzed by minute sampling value
- Geomagnetic disturbance anomaly: high-frequency sampling data is required (≤1 second)
Implementation and application suggestions
Take the verification of Qinghai geomagnetic anomaly in 2023 as an example:
- Name the report strictly in accordance with Clause 5.2.2
- Use the geomagnetic detrended residual method in Appendix B Table B.1
- Implement the requirements of A.3.3 chart specifications
Standard evolution analysis
Compared with DB/T 70-2018 underground fluid standard, this document:
- New geomagnetic disturbance power spectrum analysis method
- Refine the classification of magnetic disturbance sources (static/non-static)
- Introduce a quantitative evaluation system for prediction effectiveness

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