DB/T 25-2008Quantities and units for earthquake observation (English PDF)

1 Foreword

DB/T 25-2008 was issued by China Earthquake Administration on 23 April 2008 and has been in force since 1 October 2008.

The DB/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.

The document runs to 17 pages in English translation.

2 Scope Preview

This standard specifies the use of the provisions of the seismic observations and units. Seismic, strong motion observation, seismic electromagnetic observation, volume name seismic crustal deformation and seismic observations used in underground fluid observation, volume symbol, unit name and unit symbols. This standard applies to seismic observations, earthquakes in areas such as scientific research and application, is also applicable to earthquake standards, books, periodicals, literature.

DB/T 25-2008 falls under ICS 91.120.25, in the field of construction materials and building.

This catalogue holds 94 other DB/T standards in that field.

In this catalogue, DB/T standards carry edition years from 2000 to 2026.

3 About this standard

Issued by: China Earthquake Administration

English translation: about 17 pages

Chinese original: about 26,281 characters

4 Related standards

Standards on related subjects:

GB/T 17742-2020 — The Chinese seismic intensity scale

DB/T 24-2025 — Specification for earthquake case stigmatization

DB/T 20.1-2025 — Specification for the construction of seismic station - Underground fluid station - Part 1: Water level, flow rate and temperature

DB/T 19-2020 — Specification for the construction of seismic station. Global navigation satellite system fiducial station

5 Classification and status

International classification (ICS): 91.120.25

Chinese Standard Classification (CCS): P 15

Prefix DB/T: recommended standard.