PDF Download HTML

[1]DAI Yuqian,HUANGFU Gang,BAI Xianfu.Characteristics of Wanding Fault Zone and its Tectonic Significance[J].Journal of Seismological Research,2017,40(01):129-137.

Copy

Characteristics of Wanding Fault Zone and its Tectonic Significance

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 40 Number of periods: 2017 01 Page number: 129-137 Column: Public date: 2017-03-20

Title:: Characteristics of Wanding Fault Zone and its Tectonic Significance

Author(s):: DAI Yuqian¹; 2; HUANGFU Gang³; BAI Xianfu¹; 3; 1.School of Tourism and Geographical Sciences,Yunnan Normal University,Kunming 650500,Yunnan,China2.Earthquake Administration of Xishan District,Kunming 650118,Yunnan,China3.Earthquake administration of Yunnan Province,Kunming 650201,Yunnan,China

Keywords:: Wanding Fault; landform characteristics; tectonic significance; distribution of water system

CLC:: P315.22

DOI:: -

Abstract:: In order to grasp the topographic features of wanding fault and its significance quantificationally,we use the 30 m spatial resolution DEM to get parameters such as topographic profile,topographic relief,slope,river deflection angle and concave index of river profile.Through analysis,we grasp some quantitative characteristics of Wanding fault and discuss its tectonic significance.The results showed that the northeast part of the study area is high while the southwest part is low.Elevation along fault vertical direction with the increase of distance to 1 500～2 000 m after the steady.Vertical fault orientation reflects the difference between erosion terrace characteristics and ordinary terraces.It also showed that the terraces were developed after the formation of Wanding fault.The distribution of water system on both sides of the fault is obvious asymmetry.Along the strike slip fault system,the water system level is higher,the turning distance is longer.Along the Wanding fracture(Nujiang River),there are 11 river deflection angles between 45° to 175°.Most of them are within the range of 100°.Just 3 river deflection angles higher than 100°.The numerical characteristic of river deflection angles shows that the local area or the whole of the river is controlled by faults.Under the long-term influence of the left lateral strike slip of the fault,the convergence angle of the water system is deflected.92.31% of the vertical profile of the rivers b value is above 1 and the longitudinal profiles are concave.This reflects the characteristics of tributary fracture on the development effect of Wanding fault.

References:: -

Similar References:

Memo

Last Update: 2017-03-20