[1]HUANG Hao,WANG Peiling,SHA Chengning.Double Difference Relocation of Qinghai Menyuan MS6.4 Earthquake Sequences in 2016[J].Journal of Seismological Research,2016,39(增刊):43-48.
Copy
Double Difference Relocation of Qinghai Menyuan MS6.4 Earthquake Sequences in 2016
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
39
Number of periods:
2016 Supplementary
Page number:
43-48
Column:
Public date:
2016-11-20
- Title:
- Double Difference Relocation of Qinghai Menyuan MS6.4 Earthquake Sequences in 2016
- Keywords:
- Menyuan b>S6.4 earthquake; the double-difference relocation; Time-Reversal Imaging Technique; aftershock sequences; source parameter
- CLC:
- P315.7
- DOI:
- -
- Abstract:
- Based on TRIT(Time-Reversal Imaging Technique),we relocated the Qinghai Menyuan MS6.4 earthquake on Jan.21,2016 and 878 aftershocks by double difference method,and obtained the source parameters of 701 earthquakes finally. The statistical location errors(two times of mean square deviation)was 0.4,0.5 and 0.9 km in EW,NS and vertical directions respectively,the mean time error is 0.2 s. The length of aftershocks in NW-SE and NE-SW is 16 km and 10 km respectively. The focal depth distributes in the range of 2～25 km,which can be divided into three layers,it mainly distributes in the range of 6～10 km. Based on the focal depths profile,we conjectured that the seismogenic fault is a reverse fault tilt towards NE and its depth is deep. The main shock located on the top of the seismogenic fault,and there is a V-shaped asperity under it. Combined with focal mechanism result,we consider that Menyuan earthquake occurred in the thrusting process of seismogenic fault which is blocked by the V-shaped asperity. Key words:Menyuan MS6.4 earthquake on Jan.21,2016 and 878 aftershocks by double difference method,and obtained the source parameters of 701 earthquakes finally. The statistical location errors(two times of mean square deviation)was 0.4,0.5 and 0.9 km in EW,NS and vertical directions respectively,the mean time error is 0.2 s. The length of aftershocks in NW-SE and NE-SW is 16 km and 10 km respectively. The focal depth distributes in the range of 2～25 km,which can be divided into three layers,it mainly distributes in the range of 6～10 km. Based on the focal depths profile,we conjectured that the seismogenic fault is a reverse fault tilt towards NE and its depth is deep. The main shock located on the top of the seismogenic fault,and there is a V-shaped asperity under it. Combined with focal mechanism result,we consider that Menyuan earthquake occurred in the thrusting process of seismogenic fault which is blocked by the V-shaped asperity.
- References:
- -
- Similar References:
Memo
-
Last Update:
2016-10-20