Publikationsdatum:
2018-06-03
Beschreibung:
To study the movement characteristics of crustal deformation around the epicenter before the M s 6.6 earthquake in Minxian-Zhangxian in 2013, the paper analyzes the GPS velocity field, the baseline time series between stations and the time series of the epicentral region strain, and then discusses the characteristics of the crustal deformation before the earthquake. It is shown from the results that the Lintan-Tanchang fault and the Northern Xiqinling fault are in the inner circle of the clockwise vortex, which have obvious stress accumulation. Among the two velocity fields in 2004-2007 and 2009-2011, there are significant differences in the direction and amplitude of the movement around the Lintan-Tanchang fault, which may cause the risk of earthquake events. The baseline time series reflect the strain accumulation in NE side of Lintan-Tanchang thrust fault with NE-trending was quite high before the earthquake, and the velocity of the SW side was accelerating, ...
Print ISSN:
1755-1307
Digitale ISSN:
1755-1315
Thema:
Geographie
,
Geologie und Paläontologie
,
Physik
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