China seismic intensity scale

The China seismic intensity scale (CSIS) is a national standard in the People's Republic of China[1] used to measure seismic intensity. Similar to EMS-92 on which CSIS drew reference, seismic impacts are classified into 12 degrees of intensity, or liedu (Chinese: 烈度; pinyin: lièdù, literally "degrees of violence") in Roman numerals from I for insensible to XII for landscape reshaping.

The scale was initially formalized by the China Earthquake Administration (CEA) in 1980, therefore often referred to by its original title as "China Seismic Intensity Scale (1980)". It was later revised, and adopted as a national standard, or Guobiao, series GB/T 17742-1999 by then National Quality and Technology Supervision Administration (now General Administration of Quality Supervision, Inspection, and Quarantine of P.R.C., AQSIQ) in 1999.[2] The standard was set for revision not long before the 2008 Sichuan earthquake.[3]

  1. ^ Effectively this only applies to mainland China. Hong Kong and Taiwan each use a different intensity scale. See Seismic intensity scales for more details.
  2. ^ CHEN Dasheng, SHI Zhenliang, XU Zonghe, GAO Guangyi, NiAN Jiaquan, XIAO Chengye, FENG Yijun (陈达生、时振梁、徐宗和、高光伊、鄢家全、肖承邺、冯义钧) (1999-04-26). "China Seismic Intensity Scale (中国地震烈度表)" (in Chinese). General Administration of Quality Supervision, Inspection, and Quarantine of P.R.C. Archived from the original on 2008-10-29. Retrieved 2008-09-12.{{cite web}}: CS1 maint: multiple names: authors list (link)
  3. ^ "Revision of "China Seismic Intensity Scale" started (《中国地震烈度表》修订工作启动)" (in Chinese). China Earthquake Administration (中国地震局). 1999-04-26. Retrieved 2008-09-12.