Medium-Term Earthquake Forecast Using Gravity Monitoring Data: Evidence from the Yutian and Wenchuan Earthquakes in China
Table 2
Nine large () earthquakes occurred within or near China from 2001 to 2008 and gravity changes before these nine earthquakes as detected by the Crustal Monitoring Network of China (CMONOC) [3].
ID
Earthquake (province or equivalent)
Magnitude ()
Location of actual epicenter
Date of earthquake
Observed peak-to-valley difference of gravity changes (in 10−8 m/s2) (time period) and region of change
1
Kunlun (Xinjiang)
8.1
36.2°N, 90.9°E
14-Nov-2001
130 (1998–2000); bordering areas between Qinghai and Xinjiang
2
Offshore east of Taiwan
7.5
24.4°N, 122.1°E
31-Mar-2002
80 (1998–2000); coastal area in Fujian facing Taiwan
3
Wangqing (Jilin)
7.2
43.5°N, 103.6°E
29-Jun-2002
60 (1998–2000); the Wangqing-Changchun-Suiyang area in Jilin
4
Jashi (Xinjiang)
6.8
39.5°N, 77.2°E
24-Feb-2003
60 (1998–2000); the Kashi-Wushi-Kuerle area in southwest Xinjiang
5
The bordering areas between China and Russia near Northern Xinjiang
7.9
49.9°N, 87.9°E
28-Sep-2003
60 (2000–2002); northern Xinjiang
6
Gaizhe (Tibet)
6.9
32.5°N, 85.2°E
9-Jan-2008
80 (2002–2005); the Gaize and Nima area in Tibet
7
Yutian (Xinjiang)
7.3
35.6°N, 81.6°E
21-Mar-2008
90 (2002–2005); the Yutian and Hetian area in Xinjiang
8
Wenchuan (Sichuan)
8.0
31.0°N, 103.4°E
12-May-2008
130 (1998–2005); northern Sichuan along Luzhou-Wenchuan-Maerkang
9
Zhongba (Tibet)
6.8
31.0°N, 83.6°E
25-Aug-2008
90 (2002–2005); the Zhongba and Nima area in Tibet
