|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Detection of a half-microgal coseismic gravity change after the Ms7. 0 Lushan earthquake显示文摘Because only a small near-field coseismic gravity change signal remains after removal of noise from the accuracy of observations and the time and spatial resolution of the earth's surface gravity observation system,it is difficult to verify simulations of dislocation theory.In this study,it is shown that the GS15 gravimeter,located 99.5 km from the epicenter of the Ms7.0 Lushan earthquake on April 20,2013 at 08∶04 UTC+8,showed the influence of the earthquake from 2013-04-16 to 2013-04-26 after a time calibration,tide corrections,drift correction,period correction and relaxation correction were applied to its data.The post-seismic relaxation process of the spring in the gravimeter took approximately 430 minutes and showed a 2.5×10-8ms-2gravity change.After correcting for the relaxation process,it is shown that a coseismic gravity change of approximately+0.59±0.4×10-8ms-2was observed by the GS15 gravimeter;this agrees with the simulated gravity change of approximately 0.31×10-8ms-2.The rate of the coseismic gravity change and the coseismic vertical displacement,as measured by one-second and one-day sampling interval GPS units,is also consistent with the theoretical rate of change.Therefore,the GS15 gravimeter at the Pixian Station observed a coseismic gravity change after the Ms7.0 Lushan earthquake.This and similar measurements could be applied to test and confirm the theory used for these simulations. | Wei Jin Zhao Bin Tan Hongbo Yu Dan Shen Chongyang Li Hui | 2013 | Geodesy and Geodynamics2013，4，3： | 7 |
| 2 | Recent gravity changes in China Mainland显示文摘Based on results of the mobile gravity measurements of the Crustal Movement Observation Network of China and Digital Earthquake Observation Network of China, this paper shows the pattern of temporal gravity changes in China mainland on a time scale of 2-3 years since 1998, and gives an analysis of the patterns. The result shows that the temporal gravity changes basically reflect the current mass movement and occurrence of strong earthquakes. | Li Hui Shen Chongyang Sun Shaoan Wang Xiaoquan Xiang Aimin Liu Shaoming | 2011 | Geodesy and Geodynamics2011，2，1： | 7 |
| 3 | Characteristics of subsurface density variations before the 4.20 Lushan M_s7.0 earthquake in the Longmenshan area: inversion results显示文摘The 4.20 Lushan MS7.0 earthquake occurred on the southwest segment of the Longmenshan fault on 20 April 2013. Some meaningful information on the preparation and occurrence of this earthquake was found based on the dynamic variation of gravity(DVG). To examine the great progress of the Lushan earthquake, we obtained the density variation(DENV) derived from the DVG using the compact gravity inversion method in this article. The inversion results reveal three main findings:(1) the DENV in the crust in the Jinshajiang fault area changed from positive in 2010–2011 to negative in 2011–2012.(2) The DENV in the Xianshuihe fault area decreased continuously from 2010 to 2012.(3) The DENV of the uppermost mantle of South China decreased in 2010–2011 and increased in 2011–2012. We propose that the flow/expansion of the middle-lower crust beneath the Bayan Har block and Moho subsidence on the southwest margin of the Chuan-Dian block may have been the major causes of the Lushan earthquake. | Songbai Xuan Chongyang Shen Hui Li Hongtao Hao | 2015 | Earthquake Science2015，28，1： | 5 |
| 4 | Estimating Moho basement and faults using gravity inversion in Yushu-earthquake area,China显示文摘A gravity survey was conducted one month after the 2010 Yushu earthquake in the epicenter area.The cross-fault survey line was 500 km long,from Langqian county to Qingshuihe county,in a transition zone between Bayan Har block and Qiangtang block,in an area of high elevation,large undulating terrain,and complex geological features.An interpretation of the data was carried out together with other kinds of data,such as seismic exploration and magnetic exploration.The result shows that gravity is sensitive to fault boundary;the geologic structure of the region is complex at middle and upper depths,and the density profile reveals an eastward-pushing fault movement. | Yang Guangliang | 2012 | Geodesy and Geodynamics2012，3，2： | 4 |
| 5 | Gravity distribution characteristics and their relationship with the distribution of earthquakes and tectonic units in the Northe South seismic belt, China显示文摘The Northe South Seismic Belt(NSSB) is a Chinese tectonic boundary with a very complex structure, showing a sharp change in several geophysical field characteristics. To study these characteristics and their relationship with the distribution of earthquakes and faults in the study area, we first analyze the spatial gravity anomaly to achieve the Bouguer gravity anomaly(EGM2008 BGA) and the regional gravity survey Bouguer gravity anomaly.Next, we ascertain the Moho depth and crustal thickness of the study area using interface inversion with the control points derived from the seismic and magnetotelluric sounding profiles achieved in recent years. In this paper, we summarize the relief, trend, Moho gradient, and crustal nature, in addition to their relationship with the distribution of earthquakes and faults in the study area. The findings show that earthquakes with magnitudes greater than Ms7.0 are mainly distributed in the Moho Bouguer anomaly variation belt and faults. The results of the study are important for future research on tectonic characteristics, geological and geophysical surveys, and seismicity patterns. | Wu Guiju Tan Hongbo Zou Zhengbo Yang Guangliang Shen Chongyang | 2015 | Geodesy and Geodynamics2015，6，3： | 4 |
| 6 | A Physical Method of Analyzing theMechanism of Continental StrongShocks from Crustal Movement显示文摘In order to analyze the mechanism of continental strong shocks from the angle of crustal movement using the data of repeated geodetic survey, this paper has proposed a physical method; it analyzes the mechanism of density change due to the occurrence of strong shocks by use of the physical quantity that reflects the time change of crustal density. (1) The general theory of the time change of density in the earth’ s interior and the theory of the time change of single layer density have been introduced, and an algorithm of stepwise iteration has been proposed; (2) The effect of the change of single layer density caused by fault dislocation has been analyzed in brief; (3) The characteristics of the time change of crustal density in the south of the seismogenic region before the 1996 Lijiang earthquake with M_L =7.0 have been studied; (4) The precursor model or causal mechanism of strong shocks possibly existing in the time change of crustal density has been investigated preliminarily. | Shen Chongyang,Wu Yun,and Gan Jiasi Institute of Seismology. CSB, Wuhan 430071,China | 2001 | Earthquake Research in China2001，15，3： | 4 |
| 7 | Analytical study on abnormal change in time-variable gravity at Yichang seismostation before the M5.1 Badong earthquake显示文摘An M5.1 earthquake occurred in Badong County,only 66 km from the Three Gorges Dam,on December 16,2013. The continuous gravity observation data obtained at Yichang seismostation nearest to the epicenter( 96 km) were analyzed,and it was found that the continuous gravity observation data obtained in this rainy season did not exhibit a characteristic of seasonal change in gravity identical to that in the past years,and thereafter the M5.1 Badong earthquake occurred. Numerical simulation revealed that the water storage and discharge of the Three Gorges reservoir generated seasonal change in gravity,and the changes in atmospheric pressure and gravity load were not the main sources of the seasonal change of continuous gravity observation data whether in respect of magnitude or phase and did not have obvious breaking change on annual variation before the earthquake. Through analysis of the seasonal change data observed on the same site including cavern temperature,rainfall data and global terrestrial water model( CPC) simulated water load,it was thought that,in the observation room with cavern temperature change of only-0.11°C / a at Yichang seismostation,the seasonal change of continuous gravity observation result mainly originated from the seasonal change in rainfall. In the case that the changes in rainfall and its water load did not have evident breaking change on annual variation law before the earthquake,if the M5.1 Badong earthquake was the cause of the breaking change on annual variation law in Yichang this time,then it was believed through analysis of crust expansion ratio that similar anomaly should occur at a crust expansion and compression intersection,no more than 100 km away from the epicenter. | Wei Jin Shen Chongyang Liu Shaoming Dai Miao | 2014 | Geodesy and Geodynamics2014，5，1： | 4 |
| 8 | Simulation of coseismic effects of the Ms7. 0 Lushan earthquake显示文摘Using plane dislocation theory and the seismic-wave inversion results from the Institute of Geophysics,China Earthquake Administration and the Institute of Geodesy and Geophysics,Chinese Academy of Sciences models,the surface coseismic deformation and gravity changes caused by the 2013 Ms7.0 Lushan earthquake are simulated.The simulations of coseismic gravity change and deformation indicate that the dislocation has dip-slip characteristics.The results also show that the coseismic deformation exhibits a symmetrical,positive-and-negative distribution,with the deformation usually being less than 10 mm in the farfield but up to 140 mm in the near-field.The gravity changes are concentrated on the fault-projection area,which is greatly affected by the vertical surface deformation.The gravity change and vertical deformation in the far field are usually less than and 5 mm,respectively,but reach and 330 mm,respectively,in the near field.The simulated results agree well with the measured results,which suggests a theoretical basis for the observed change in gravity before and after this earthquake. | Tan Hongbo Shen Chongyang Wei Jin Zhao Bin Wang Jian Xuan Songbai | 2013 | Geodesy and Geodynamics2013，4，3： | 3 |
| 9 | Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake显示文摘Based on the data of the repeated gravity observation network in Chinese mainland since 1998,we analyzed the temporal changes of regional gravity field before the 2008 Yutian Ms7.3 earthquake.The result shows some mid-to-long term(two to ten years)changes during the earthquake's preparation.Notable features are a gravity increase lasting several years and a relatively large-scaled gradient zone of gravity change,the former indicating a continuous energy accumulation and the latter a possible location of seismic rupture.These gravity changes showed a trend of increase-accelerated increase-decelerated increase,similar to that of the Tangshan Ms7.8 earthquake in 1976.The maximum accumulated gravity change related to the earthquake reached 200×10-8 ms-2. | Shen Chongyang Li Hui Sun Shaoan Yang Guangliang Xuan Songbai Tan Hongbo Liu Shaoming | 2012 | Geodesy and Geodynamics2012，3，1： | 3 |
| 10 | Trends in gravity changes from 2009 to 2013 derived from ground-based gravimetry and GRACE data in North China显示文摘North China is a key region for studying geophysical progress. In this study, ground-based and Gravity Recovery and Climate Experiment(GRACE) gravity data from 2009 to 2013 are used to calculate the gravity change rate(GCR) using the polynomial fitting method. In general, the study area was divided into the Shanxi rift, Jing-Jin-Ji(Beijing-Tianjin-Hebei Province), and Bohai Bay Basin(BBB) regions. Results of the distribution of the GCR determined from ground-based gravimetry show that the GCR appears to be 'negativepositive-negative' from west to east, which indicates that different geophysical mechanisms are involved in the tectonic activities of these regions. However, GRACE solutions are conducted over a larger spatial scale and are able to show a difference between southern and northern areas and a mass redistribution of land water storage. | Shen Chongyang Xuan Songbai Zou Zhengbo Wu Guiju | 2015 | Geodesy and Geodynamics2015，6，6： | 3 |
| 11 | Human Vγ9Vδ2-T cells efficiently kill influenzavirus-infected lung alveolar epithelial cells显示文摘 | Hong Li Zheng Xiang Ting Feng Jinrong Li Yinping Liu Yingying Fan Qiao Lu Zhongwei Yin Meixing Yu Chongyang Shen Wenwei Tu | 2013 | Cellular & Molecular Immunology2013，10，2： | 3 |
| 12 | Joint inversion of gravity and seismic data along a profile across the seismogenic fault of 2010 Yushu Ms7. 1 earthquake显示文摘Yushu Ms7. 1 earthquake occurred on the Ganzi-Yushu fault zone,across which we carried out a joint relative-gravity and seismic-reflection survey,and then performed a gravity inversion constrained by the seismic-reflection result. Based on the data of complete Bouguer gravity anomaly and seismic reflection,we obtained a layered interface structure in deep crust down to Moho. Our study showed that the inversion could reveal the interfaces of strata along the survey profile and the directions of regional faults in two-dimension. From the characteristics of the observed topography of the Moho basement,we tentatively confirmed that the uplift of eastern edge of Qinghai-Tibet plateau was caused by the subduction of the Indian plate. | Yang Guangliang Wang Fuyun Shen Chongyang Sun Shaoan Tan Hongbo | 2011 | Geodesy and Geodynamics2011，2，4： | 2 |
| 13 | Simulation of co-seismic gravity change and deformation of Wenchuan Ms8.0 earthquake显示文摘co 地震的严肃变化和排水量由 Wenchuan Ms8 引起了的表面。分别地, 0 地震由地球物理, CEA 和 USGS 的研究所根据一半空间脱臼理论和二差错模型 inversed 是计算的。结果显示出那 1 )脱臼由剧降组成滑倒并且权利侧面的罢工滑倒; 2 )co地震的严肃变化证明一个四象限的模式,哪个是极大地由垂直排水量的分发控制了,吗在特别近文件; 3 )严肃变化通常是不到 10 汦潯敤?楷桴? | Chongyang Shen Hui Li Hongbo Tan | 2010 | Geodesy and Geodynamics2010，1，1： | 2 |
| 14 | Is 1.28 parts per million biomarker specific for neural progenitor cells?显示文摘Nuclear magnetic resonance-visible mobile lipid,at 1.28 parts per million(ppm),is thought to be due to mobile lipid droplets formed in cells and has been considered unique for neural progenitor cells.However,this idea remains controversial.The present study examined the 1.28 ppm biomarker in other stem cells and non-stem cells,and explored the relationship between 1.28 ppm biomarker and mobile lipid droplets.1H nuclear magnetic resonance spectroscopy of EC109 cells,mesenchymal stem cells(MSCs) and adipogenic cells differentiated from MSCs was performed.Results show that 1.28 ppm biomarker was observed in human MSCs,but was absent from EC109 cells.Following adipogenic differentiation induced for 2 weeks,the 1.28 ppm biomarker climbed remarkably,with mobile lipid droplet generation,suggesting that the 1.28 ppm biomarker is not specific for neural progenitor cells because it is also observed in MSCs and adipogenic-induced differentiated cells.Moreover,it is possible to monitor MSCs differentiation following cell transplantation,using 1.28 ppm biomarker changes. | Zhifeng Xu Chongyang Shen Haiqiang Zhu Yaowen Chen Linping Wu Peng Huang YeyuXiao Zhiwei Shen Li Pang Xiuqin Guo Lian Ma Renhua Wu | 2010 | Neural Regeneration Research2010，5，15： | 2 |
| 15 | Spatial prediction of soil organic matter in the presence of different external trends with REML-EBLUP显示文摘 | Chai Xurong Shen Chongyang Xiaoyong Yuan | 2008 | Geoderma2008，148，2： | 1 |
| 16 | Research on the relationship between geophysical structural features and earthquakes in Mid-Yunnan and the surrounding area显示文摘In this study,we analyzed the gravity and,magnetic characteristics,and the occurrence of a fault zone and discussed the relationships between the two locations.The results reveal that the subsurface structures strikes are different compared with those in the research region.In other words,the geophysical advantageous directions from the gravity and magnetic anomalies are not the same as those caused by the surface structures.The local horizontal gradient results from the gravity and magnetic anomalies show that the majority of earthquakes occur along an intense fault zone,which is a zone of abrupt gravity and negative magnetic change,where the shapes match very well.From the distribution of earthquakes in this area,we find that it has experienced more than 11 earthquake events with magnitude larger than Ms7.0.In addition,water development sites such as Jinshajiang,Lancangjiang,and the Red River and Pearl River watersheds have been hit ten times by earthquakes of this magnitude.It is observed that strong earthquakes occur frequently in the Holocene active fault zone. | Wu Guiju Tan Hongbo Yang Guangliang Shen Chongyang | 2015 | Geodesy and Geodynamics2015，6，5： | 1 |
| 17 | Wenchuan Ms8.0 earthquake coseismic slip distribution inversion显示文摘By using GPS and gravity data before and after the Wenchuan Ms8.0 earthquake and combining data from geological surveys and geophysical inversion studies, an initial coseismic fault model is constructed. The dip angle changes of the fault slip distribution on the fault plane are inversed, and the inversion results show that the shape of the fault resembles a double-shovel. The Yingxiue Beichuan Fault is approximately 330 km long, the surface fault dip angle is 65.1, which gradually reduces with increasing depth to 0 at the detachment layer at a depth of 19.62 km. The Guanxiane Jiangyou Fault is approximately90 km long, and its dip angle at the surface is 55.3, which gradually reduces with increasing depth; the fault joins the Yingxiue Beichuan Fault at 13.75 km. Coseismic slip mainly occurs above a depth of 19 km. There are five concentrated rupture areas, Yingxiu,Wenchuan, Hanwang, Beichuan, and Pingwu, which are consistent with geological survey results and analyses of the aftershock distribution. The rupture mainly has a thrust component with a small dextral strikeeslip component. The maximum slip was more than10 m, which occurred near Beichuan and Hanwang. The seismic moment is 7.84 1020 Nm(Mw7.9), which is consistent with the seismological results. | Tan Hongbo Wu Guiju Xuan Songbai Yang Guangliang Fan Wenhua Shen Chongyang | 2015 | Geodesy and Geodynamics2015，6，3： | 1 |
| 18 | Vγ9Vδ2-T lymphocytes have impaired antiviral function in small-for-gestational-age and preterm neonates显示文摘 | Jinrong Li Hong Li Huawei Mao Meixing Yu Ting Feng Fan Yang Yingying Fan Qiao Lu Chongyang Shen Zhongwei Yin Wenwei Tu Meng Mao | 2013 | Cellular & Molecular Immunology2013，10，3： | 1 |
| 19 | Modelling and optimal control for a fed-batch fermentation process显示文摘 | Liu Chongyang Gong Zhaohua Shen Bangyu | 2013 | Applied Mathematical Modelling2013，37，3： | 1 |
| 20 | Gravity anomaly and crustal density structure in Jilantai rift zone and its adjacent region显示文摘This paper deals with the interpretation of Bouguer gravity anomalies measured along a 250 km long Suhaitu-Etuokeqi gravity profile located at the transitional zone of the Alxa and Ordos blocks where geophysical characteristics are very complex. The analysis is carried out in terms of the ratio of elevation and Bouguer gravity anomaly, the normalized full gradient of a section of the Bouguer gravity anomaly(Gh) and the crustal density structure reveal that(1) the ratio of highs and lows of elevation and Bouguer gravity anomaly is large between Zhengyiguan fault(F4) and Helandonglu fault(F6), which can be explained due to crustal inhomogeneities related to the uplift of the Qinghai-Tibet block in the northeast;(2)the main active faults correspond to the Ghcontour strip or cut the local region, and generally show strong deformation characteristics, for example the Bayanwulashan mountain front fault(F1) or the southeast boundary of Alxa block is in accord with the western change belt of Gh, a belt about10 km wide that extends to about 30 km;(3) YinchuanPingluo fault(F8) is the seismogenic structure of the Pingluo M earthquake, and its focal depth is about 15 km;(4)the Moho depth trend and Bouguer gravity anomaly variation indicates that the regional gravity field is strongly correlated with the Moho discontinuity. | Guiju Wu Chongyang Shen Hongbo Tan Guangliang Yang | 2016 | Earthquake Science2016，29，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员