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| 1 | Coseismic vertical deformation of the M_S8.0 Wenchuan earthquake from repeated levelings and its constraint on listric fault geometry显示文摘The devastating MS8.0 Wenchuan earthquake ruptured two large parallel thrust faults along the middle segment of the Longmenshan thrust belt.Preseismic and postseismic leveling data indicated the hanging wall of the YingxiuBeichuan-Nanba thrust fault mainly presented coseismic uplift with respect to the reference point at Pingwu county town, and the observed maximum uplift of 4.7 m is located at Beichuan county(Qushan town)which is about 100 m west of the fault scarp.The foot wall of the Yingxiu-Beichuan-Nanba thrust fault mainly showed subsidence with maximum subsidence of 0.6 m near the rupture.By employing a listric dislocation model,we found that the fault geometry model of exponential dip angleδ=88°×[1-exp(-9/h)]with depth of 18 km and uniform thrust-slip of 5.6 m could fit the observed coseismic vertical deformation very well,which verifies the listric thrust model of the Longmenshan orogenic zone. | Qingliang Wang Duxin Cui Xi Zhang Wenping Wang Jinwen Liu Kang Tian Zhaoshan Song | 2009 | Earthquake Science2009，22，6： | 25 |
| 2 | Characteristics of Recent Horizontal Crustal Movement and Tectonic Deformation in the Northwest China Region显示文摘Making use of observation data of GPS in the Northwest China region and infrared distance-measurements crossing the Qilian-Longshoushan fault zone up to 2004, aided by the least square collocation and inversion of negative dislocation model for the boundaries of elastic blocks and the singular force-source, the dynamic evolution features of deformation and strain fields before and after the M_S=8.1 earthquake on the west of Kunlun Mountains Pass, especially the recent tectonic deformation and stress field status three years after this earthquake are studied. The possible regions or segments of active blocks and their boundaries reflecting accumulation background of high strain energy of producing earthquakes over middle magnitude, are obtained, as well as the potential epicenter. The results show that after short-term relaxation and adjustment in the northern margin of Qinghai-Xizang (Tibet) block after the M_S=8.1 earthquake, the main control action of background field of northeastward pushing of Indian plate is now recovering. Moreover, the following regions are found to have the background of high strain energy accumulation. They are the middle segment of the northern Tianshan fault zone and its meeting region with the western segment, the middle and western segments of southern Tianshan fault zone and the meeting region with Western Kunlun fault zone, the middle segment of Altun fault, the middle-eastern segment of Qilianshan fault zone and its meeting region with Haiyuan fault, the meeting region of northern margin fault of west Qinling Range and the southeastward expanding line of Zhuanglanghe fault; The Linze and Haiyuan areas also see accumulation of strain energy to some degree. | Zhang Xi Liu Wenyi Wang Shuangxu Wang Wenping Zhang Xiaoliang Cui Duxin Xue Fuping | 2006 | Earthquake Research in China2006，20，3： | 2 |
| 3 | Effect of Kunlun Ms 8.1 earthquake on crustal deformation in northeastern edge region of Qinghal-Tibet plateau显示文摘地震差错参数能基于在在焦点的区域和它的邻近的区域的地震前后的变丑数据是与 Okada 模型一起的 inversed。公司地震的排水量能被使用这些参数,然后由 GPS 方法从观察排水量扣除 co 地震的排水量获得的地区性的速度地模仿。我们在 steps:firstly 在二在 2001-2003 期间观察的 Qinghai 西藏高原的东北边区域处理了并且分析数据,排水量由 Kunlun Ms8 产生了。在这个区域的 2001 的 1 地震被模仿,并且第二,从它扣除了 co 地震的排水量并且获得了水平外壳的速度地。结果 reveal:1 ) Kunlun Ms8 的效果。在这个区域的外壳的变丑上的 1 地震是重要的; 2 ) 与这个方法获得的速度地比在反映地区性的外壳的运动和紧张的地位的原来的 GPS 速度地好。 | Duxin Cui Qingliang Wang Wenping Wang | 2010 | Geodesy and Geodynamics2010，1，1： | 2 |
| 4 | Decadal correlation between crustal deformation and variation in length of day of the earth 显示文摘 | Wang Qingliang Chen Yuntai Cui Duxin | 2000 | Earth Planets Space2000，52，： | 1 |
| 5 | One feature of the activated southern Ordos block:the Ziwuling small earthquake cluster显示文摘Small earthquakes( Ms > 2.0) have been recorded from 1970 to the present day and reveal a significant difference in seismicity between the stable Ordos block and its active surrounding area.The southern Ordos block is a conspicuous small earthquake belt clustered and isolated along the NNW direction and extends to the inner stable Ordos block;no active fault can match this small earthquake cluster.In this paper,we analyze the dynamic mechanism of this small earthquake cluster based on the GPS velocity field( from 1999 to2007),which are mainly from Crustal Movement Observation Network of China( CMONOC) with respect to the north and south China blocks.The principal direction of strain rate field,the expansion ratefield,the maximum shear strain rate,and the rotation rate were constrained using the GPS velocity field.The results show that the velocity field,which is bounded by the small earthquake cluster from Tongchuan to Weinan,differs from the strain rate field,and the crustal deformation is left-lateral shear.This left-lateral shear belt not only spatially coincides with the Neo-tectonic belt in the Weihe Basin but also with the NNW small earthquake cluster( the Ziwuling small earthquake cluster).Based on these studies,we speculate that the NNW small earthquake cluster is caused by left-lateral shear slip,which is prone to strain accumulation.When the strain releases along the weak zone of structure,small earthquakes diffuse within its upper crust.The maximum principal compression stress direction changed from NE-SW to NEE-SWW,and the former reverse faults in the southwestern margin of the Ordos block became a left-lateral strike slip due to readjustment of the tectonic stress field after the middle Pleistocene.The NNW Neo-tectonic belt in the Weihe Basin,the different movement character of the inner Weihe Basin( which was demonstrated through GPS measurements) and the small earthquake cluster belt reflect the activated southern margin of the Ordos block,which was generated through readjustment of the tectonic stress field after the middle Pleistocene. | Li Yuhang Wang Qingliang Cui Duxin Hao Ming Ji Lingyun Qin Shanlan | 2014 | Geodesy and Geodynamics2014，5，3： | 1 |
| 6 | Analysis on the Observation Data of Three Profiles across the Qilian Mountain-Haiyuan Fault Zone显示文摘由分析 GPS,铺平并且从 Minle, Huazangsi 和 Shagouhe 的严肃观察数据在 2005 期间介绍 Qilian Mountain-Haiyuan 差错到对面 - 2009,这些数据的变化和在不同时间的主要差错的活动特征被获得。Changma-Erbo, Maomaoshan, Zhunglanghe 和 Haiyuan 指责的结果表演在最近的年里是活跃的。在垂直排水量和活动严肃数据之间的关系被分析,并且结果表明严肃变化主要由于集体转移。水平运动速度的方向几乎沿着差错的 GPS 观察表演的结果在 2006 罢工 - 2007 当水平速度在 2007 从差错方向背离了时 - 2008,由增加的东方排水量描绘了。在连续观察的 N 和 E 坐标值的时间系列上的线性趋势的移动之上的进一步的分析在三侧面附近中国的外壳的运动观察网络驻扎表明 Wenchuan 地震在 2007 在观察上有效果 - 2008。在 2008 比较重力的变化 - 2009 与 Bouguer 严肃异例背景,我们发现 Minle 侧面附近的区域在调整和恢复的阶段,当异例完全没在 Huazangsi 和 Shagouhe 侧面附近被恢复时。 | Hu Yaxuan Wang Xiong Cui Duxin Zhu Yiqing | 2011 | Earthquake Research in China2011，25，4： | 0 |
| 7 | Research on the Dynamic Evolution of Deformation Field and the Acquisition of Seismogenic Information Before Lijiang Earthquake With Ms7.0显示文摘By using the integral dynamic adjustment of the 'segmentation rate,' this paper processes the leveling repetition measurement data of the Dianxi(western Yunnan)area since the 1980s,makes the fitting of the velocity surface for vertical deformation with multi-surface function,and splits information of the vertical deformation field.The dynamic evolution of the deformation field and vertical deformation information norm-shear deformation,extension deformation,volumetric deformation,and quasi acceleration,which are the distribution characteristics of variation,are studied by using the information split before the Lijiang earthquake with MS7.0(February 3,1996)in the north of the Dianxi(western Yunnan)leveling network.The results indicate that in Dianxi(western Yunnan)area,the acute vertical differential movement of the large-scale deformation velocity high gradient belt and high information norm distribution in the Lijiang,Yongsheng,and its adjacent areas in the middle stage of the 1980s is the reflection | Wang Shuangxu,Jiang Zaisen,Cui Duxin,and Wang JiyingThe Second Center for Crustal Deformation Monitoring,SSB,Xi’an 710054,China | 1998 | Earthquake Research in China1998，12，2： | 0 |
| 8 | Seco-cyclic phorbol derivatives and their anti-HIV-1 activities显示文摘Phorbol esters are recognized for their dual role as anti-HIV-1 agents and as activators of protein kinase C(PKC).The efficacy of phorbol esters in binding with PKC is attributed to the presence of oxygen groups at positions C20,C3/C4,and C9 of phorbol.Concurrently,the lipids located at positions C12/C13 are essential for both the anti-HIV-1 activity and the formation of the PKC-ligand complex.The influence of the cyclopropane ring at positions C13 and C14 in phorbol derivatives on their anti-HIV-1 activity requires further exploration.This research entailed the hydrolysis of phorbol,producing seco-cyclic phorbol derivatives.The anti-HIV-1 efficacy of these derivatives was assessed,and the affinity constant(Kd)for PKC-δprotein of selected seco-cyclic phorbol derivatives was determined through isothermal titration calorimetry.The findings suggest that the chemical modification of cyclopropanols could affect both the anti-HIV-1 activity and the PKC binding affinity.Remarkably,compound S11,with an EC50 of 0.27μmol·L^(−1) and a CC50 of 153.92μmol·L^(−1),demonstrated a potent inhibitory effect on the intermediate products of HIV-1 reverse transcription(ssDNA and 2LTR),likely acting at the viral entry stage,yet showed no affinity for the PKC-δprotein.These results position compound S11 as a potential candidate for further preclinical investigation and for studies aimed at elucidating the pharmacological mechanism underlying its anti-HIV-1 activity. | HUANG Xiaolei HUANG Xusheng LI Qirun MA Mengdi CUI Yadong YANG Liumeng WANG Haibo LUO Ronghua CHEN Jinglei YANG Jingxuan LIN Jinrong LI Duxin ZHENG Yongtang ZHANG Jian | 2024 | Chinese Journal of Natural Medicines2024，22，4： | 0 |
| 9 | Dynamic evolution of crustal horizontal deformation before the Ms6.4 Menyuan earthquake显示文摘An Ms6.4 earthquake occurred in the Menyuan county of Qinghai Province on Jan 21, 2016.In order to recognize the development of horizontal deformation and distinguish precursory deformation anomalies, we obtained coordinates time series, velocity and strain model around the seismic zones from processing of continuous observations from 2010 and 6 times of surveying Global Positioning System(GPS) data since 2009. The results show that, before the earthquake, the eastern segmentation of the Qilian tectonic zone where the Lenglongling Fault located is in strong crustal shortening and compressional strain state with dilatational rates of -15 to -25 ppb. The Lenglongling Fault has a strike-slip rate of 3.1 mm/a and a far-field differential orthogonal rate of 7 mm/a, while differential rate is only 1.2 mm/a near the fault, which reflects its locking feature with strain energy accumulation and high seismic risks. Dynamic evolution of deformation model shows that preevent dilatational rates around the seismic zones increases from -15 ppb/a to -20 ppb/a with its center moving to the source areas. Time series of N components of G337 station,which is 13.7 km away from the Lenglongling Fault, exhibit a 5 mm/a acceleration anomaly.Time series of base-station QHME(in Menyuan) displays a reverse acceleration from the end of Sep. to Dec., 2016 when it comes to a largest deviation, and the accumulative displacement is more than 4 mm and the value reverse till the earthquake. In our results,coseismic displacement of N, E, U components in QHME site are 3.0 mm, 3.0 mm, -5.4 mm,respectively. If we profile these values onto the Lenglongling Fault, we can achieve a 1.1 mm of strike slip and 4.1 mm updip slip relative to the hanging wall. | Duxin Cui Shanlan Qin Wenping Wang | 2016 | Geodesy and Geodynamics2016，7，4： | 0 |
| 10 | Geodetic constraints on contemporary three-dimensional crustal deformation in the Laji Shan—Jishi Shan tectonic belt显示文摘The Laji Shan—Jishi Shan tectonic belt(LJTB),located in the southern part of the northeastern Tibetan Plateau(NETP),is a tectonic window to reveal regional tectonic deformation in the NETP.However,its kinematics in the Holocene remains controversial.We obtain the latest and dense horizontal velocity field based on data collected from our newly constructed and existing GNSS stations.Combined with fault kinematics from geologic observations,we analyze the crustal deformation characteristics along the LJTB.The results show that:(1)The Laji Shan fault(LJF)is inactive,and the northwest-oriented Jishi Shan fault(JSF)exhibits a significant dextral and thrust slip.(2)The transpression along the arc-shaped LJTB accommodates deformation transformation between the dextral Riyue Shan fault and the sinistral west Qinling fault.(3)With the continuous pushing of the Indian plate,internal strains in the Tibetan Plateau are continuously transferred in the northeast via the LJTB as they are gradually dissipated near the LJTB and translated into significant crustal uplift in these regions. | Wenquan Zhuang Duxin Cui Ming Hao Shangwu Song Zhangjun Li | 2023 | Geodesy and Geodynamics2023，14，6： | 0 |
| 11 | PRESENT-DAY CRUSTAL MOVEMENT OF NORTH-EASTERN QINGHAI-TIBET PLATEAU显示文摘GPS observations of CMONOC and other network reveal that, relative to Dingxin fiducial station in Alashan block, the crustal movements of north eastern Qinghai Tibet plateau and its adjacent regions have the following characteristics:(i)The western part of Qilian block is shortening and moving mainly northeastward, the 8 mm/a motion of southern margin of Qaidam basin is almost completely absorbed by compressed subsidence of Qaidam basin and uplift of Qilian mountain; (ii) Eastern part of Qilian block manifests itself mainly as block like rotation or extrusion along Haiyuan left lateral fault,with an angular velocity of 0.135 /Ma; (iii) Due to the clockwise rotation of the eastern Qilian sub block in the NW Liupanshan range, Ordos block shows a slight anticlockwise rotation; (iv) Haiyuan left lateral fault and northern edge thrust fault of Qilian mountain jointly constitute the major northeastern boundary of Qinghai Tibet plateau judging from the present day crustal movement. | Wang Qingliang,Wang Wenping, Cui Duxin, Zhu Guizhi and Liang Weifeng (Second Crust Monitoring and Application Center,CEA, Xi’an 710054 ,China) | 2003 | 大地测量与地球动力学2003，23，B12： | 0 |
| 12 | Post-seismic relaxation process and vertical deformation following the 2008 Ms8.0 Wenchuan earthquake, China显示文摘The post-seismic horizontal and vertical deformations following the 2008 Ms8.0 Wenchuan earthquake are inferred from GPS and precise leveling data. The post-seismic relaxation process is measured using GPS data from campaign stations located around the Longmenshan fault, and the derived decay time constant is 12 days. The evolution of the post-seismic vertical deformation is obtained from precise leveling data measured near the surface rupture. The results demonstrate that the hanging wall is uplifting and the foot wall is subsiding. The amplitude of the post-seismic deformation is lower than that of the co-seismic deformation. The region with the largest post-seismic displacement is located on the leveling route between Maoxian and Beichuan on the hanging wall. | Hao Ming Wang Qingliang Cui Duxin | 2012 | Geodesy and Geodynamics2012，3，4： | 0 |
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