Suspected Reflections of Vertical Deformation to Moderate Earthquake in the Capital Region
CHANG Liu
MA Qing-zun
XU Ming-yuan
ZHANG Jun-qing
Abstract：Crust vertical deformation and its characteristics in the past three decades is analyzed in accord-ance with precise re-leveling data (1983-2014) in the Chinese capital region,and the vertical deformation characteristics in this area before and after three MS >4.0 earthquakes are presented.The results show that the inheritance motion is dominant in the deformation field,which means there are uplift in the north-west (mountain zone) and subsidence in the southeast (basin and plain zone),as well as partial vertical fluctuations in such background.The results also show that vertical deformation anomalies appeared about 150 km near the epicenter and 5-7 years before the MS >4.0 earthquakes,and then anomalies disappeared before the earthquakes.It may mean that in this region middle strong earthquake may occur during a rela-tively quiet period after a period of perceivable crustal movement.
Keywords：capital regionvertical deformationprecursory anomalyevolution characteristics
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 30-35 )