Home / Standards / GB/T 31160-2014 GB/T 31160-2014 Active Geomagnetic storm intensity level 地磁暴强度等级 Standard Type GBT ICS 07.060 CCS A47 Status 现行 Issue Date 2014-09-03 Implementation 2015-01-01 Responsible Dept 中国气象局 Drafting Unit N/A