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| 1 | Spatio-temporal rupture process of the 2008 great Wenchuan earthquake显示文摘Focal mechanism and dynamic rupture process of the Wenchaun Ms8.0 earthquake in Sichuan province on 12 May 2008 were obtained by inverting long period seismic data from the Global Seismic Network (GSN), and characteristics of the co-seismic displacement field near the fault were quantitatively ana-lyzed based on the inverted results to investigate the mechanism causing disaster. A finite fault model with given focal mechanism and vertical components of the long period P-waves from 21 stations with evenly azimuthal coverage were adopted in the inversion. From the inverted results as well as after-shock distribution, the causative fault of the great Wenchuan earthquake was confirmed to be a fault of strike 225°/dip 39°/rake 120°, indicating that the earthquake was mainly a thrust event with right-lateral strike-slip component. The released scalar seismic moment was estimated to be about 9.4×1020―2.0×1021 Nm, yielding moment magnitude of Mw7.9―8.1. The great Wenchuan earthquake occurred on a fault more than 300 km long, and had a complicated rupture process of about 90 s duration time. The slip distribution was highly inhomogeneous with the average slip of about 2.4 m. Four slip-patches broke the ground surface. Two of them were underneath the regions of Wenchuan-Yingxiu and Beichuan, respectively, with the first being around the hypocenter (rupture initiation point), where the largest slip was about 7.3 m, and the second being underneath Beichuan and extending to Pingwu, where the largest slip was about 5.6 m. The other two slip-patches had smaller sizes, one having the maximum slip of 1.8 m and lying underneath the north of Kangding, and the other having the maximum slip of 0.7 m and lying underneath the northeast of Qingchuan. Average and maximum stress drops over the whole fault plane were estimated to be 18 MPa and 53 MPa, respectively. In addition, the co-seismic displacement field near the fault was analyzed. The results indicate that the features of the co-seismic displacement field were coincident with those of the intensity distribution in the meizo-seismal area, implying that the large-scale, large-amplitude and surface-broken thrust dislocation should be responsible for the serious disaster in the near fault area. | ZHANG Yong FENG WanPeng XU LiSheng ZHOU ChengHu CHEN YunTai | 2009 | Science China Earth Sciences2009，52，2： | 68 |
| 2 | Temporal and spatial rupture process of the great Kunlun Mountain Pass earthquake of November 14,2001 from the GDSN long period waveform data显示文摘The temporal and spatial rupture process of the 14 November 2001 Kunlun Mountain Pass earthquake (KMPE) is obtained by inverting the high signal-to-noise-ratio P-waveform data of vertical components of 20 stations with epicentral distances less than 90°, which are of Global Digital Seismogragh Network (GDSN). The inverted results indicate that the KMPE consists of 3 sub-events. The rupture of the first sub-event initiated at the instrumental epicenter (35.97°N,90.59°E) and then propagated both westwards and eastwards, extending 140 km westwards at the speed of 4.0 km/s and 80 km eastwards at the speed of 2.2 km/s, which appeared to be an asymmetrical bilateral rupture dominantly from east to west. This sub-event formed a 220-km-long fault. Fifty-two seconds after initiation of the first sub-event, at which time the first sub-event was not over but in its healing phase, the rupture of the second sub-event initiated 220 km west of the epicenter and propagated both westwards and eastwards, extending 50 km westwards at the speed of 2.2 km/s and 70 km eastwards at the speed of 5.8 km/s, which appeared to be an asymmetrical bilateral rupture dominantly from west to east. The secondsub-event formed a 120-km-long fault. The second sub-event fused with the first sub-event 140km west to the epicenter right 12 s after its initiation. Fifty-six seconds after initiation of the first sub-event, at which time the first sub-event was getting close to the end of its healing phase, the rupture of the third sub-event initiated 220 km east of the epicenter and propagated both westwards and eastwards, extending 140 km westwards at the speed of 4.0 km/s and 130 km eastwards at the speed of 3.7 km/s, which appeared to be nearly an bilateral rupture. This sub-event formed a 270-km-long fault. The third sub-event fused with the first sub-event 80 km east of the epicenter right 36 s after its initiation. Afterwards, the source process of the KMPE was dominated by the slip after fusion of the first and third sub-events. | XU Lisheng CHEN Yuntai | 2005 | Science China Earth Sciences2005，48，1： | 12 |
| 3 | Quick moment tensor solution for 6 April 2009,L'Aquila,Italy,earthquake显示文摘A MW6.4 earthquake occurred in L'Aquila,central Italy at 1:32:42(UTC),April 6,2009.We quickly obtained the moment tensor solution of the earthquake by inverting the P waveforms of broadband recordings from the global seismographic network(GSN) stations using the quick technique of moment tensor inversion,and further inferred that the nodal plane of strike 132°,dip 53° and rake -103° is the seismogenic fault. | Chao Liu Lisheng Xu Yun-tai Chen | 2009 | Earthquake Science2009，22，5： | 7 |
| 4 | Fast and robust inversion of earthquake source rupture process and its application to earthquake emergency response显示文摘Fast inversion of source rupture process for significant earthquake is introduced and applied to earthquake emergency response. We retrieve and use the apparent source time functions (ASTFs) to stabilize the rupture process inversion, aiming to get the rupture process results correctly and quickly. The applications to 22 significant earthquakes occurred between January 2009 and July 2011 show an average inversion time consumed of about four hours, suggesting a high efficiency of this method, which much improves the inversion speed of the rupture process and is helpful in earthquake disaster mitigation and relief. | Yong Zhang Yun-tai Chen Lisheng Xu | 2012 | Earthquake Science2012，25，2： | 6 |
| 5 | Rupture process of the 2011 Tohoku earthquake from the joint inversion of teleseismic and GPS data显示文摘Teleseismic and GPS data were jointly inverted for the rupture process of the 2011 Tohoku earthquake. The inversion results show that it is a bilateral rupture event with an average rupture velocity less than 2.0 km/s along the fault strike direction. The source rupture process consists of three sub-events, the first occurred near the hypocenter and the rest two ruptured along the updip direction and broke the sea bed, causing a maximum slip of about 30 m. The large-scale sea bed breakage may account for the tremendous tsunami disaster which resulted in most of the death and missing in this mega earthquake. | Yong Zhang Lisheng Xu Yun-tai Chen | 2012 | Earthquake Science2012，25，2： | 6 |
| 6 | Rare-earth element geochemistry reveals the provenance of sediments on the southwestern margin of the Challenger Deep显示文摘The hadal zone represents one of the last great frontiers in modern marine science,and deciphering the provenance of sediment that is supplied to these trench settings remains a largely unanswered question.Here,we examine the mineralogical and geochemical composition of a sediment core(core CD-1)that was recovered from the southwestern margin of the Challenger Deep within the Mariana Trench.Major element abundances and rare-earth element patterns from these sediments require inputs from both terrigenous dust and locally sourced volcanic debris.We exploit a two-endmember mixing model to demonstrate that locally sourced volcanic material dominates the sediment supply to the Challenger Deep(averaging^72%).The remainder,however,is supplied by aeolian dust(averaging^28%),which is consistent with adjacent studies that utilized Sr-Nd isotopic data.Building on a growing database,we strengthen our understanding of Asian aeolian dust input into the northwestern Pacific,which ultimately improves our appreciation of sedimentation in,and around,the hadal zone. | JIANG Zuzhou SUN Zhilei LIU Zhaoqing CAO Hong GENG Wei XU Haixia WANG Lisheng WANG Libo | 2019 | Journal of Oceanology and Limnology2019，37，3： | 5 |
| 7 | Which velocity model is more suitable for the 2017 M_S7.0 Jiuzhaigou earthquake?显示文摘On Aug.8, 2017, an M_S 7.0 earthquake struck Jiuzhaigou, a county of Sichuan province, China. A number of investigations and studies have been conducted, some of which involved local velocity models. However, the suitability of these models has not been properly addressed. Here we collect 11 already-existing models, including those used in studies of the 2017 M_S 7.0 Jiuzhaigou earthquake,choose 10 local stations surrounding the earthquake, and employ the same technique(TRIT) to relocate the hypocenter. And furthermore, we choose a more suitable model from the 11 already-existed models by analyzing the relocation process and the relocated results for reasonability. Finally, our conclusion is that the model Fang 2018 is more suitable and the hypocenter parameters, 103.801°E,33.192°N and 15.8 km for longitude, latitude and depth, respectively, and 2017-08-08 13:19:46.66 for its origin time, based on this model should be recommended for the 2017 M_S7.0 Jiuzhaigou earthquake. | LiSheng Xu Xu Zhang ChunLai Li | 2018 | Earth and Planetary Physics2018，2，2： | 5 |
| 8 | Human RBCs blood group conversion from A to O using a novel α-N-acetylgalactosaminidase of high specific activity显示文摘α-N-acetylgalactosaminidase (αNAGA) can convert group A human red blood cells (RBCs) to group O. One novel αNAGA gene was cloned by PCR from Elizabethkingia meningosepticum isolated from a domestic clinical sample. Pure recombinant αNAGA was obtained by genetic engineering and protein purification with a calculated molecule of 49.6 kD. αNAGA was selective for terminal α-N-acetylgalacto-samine residue with a high specific activity. αNAGA could completely remove A antigens of 1 U (about 100 mL) group A1 or A2 RBCs in 1 h at pH 6.8 and 25℃ with a consumption of 1.5 or 0.4 mg recombinant enzyme. Enzyme-converted group A RBCs did not agglutinate after being mixed with monoclonal anti-A or sera of groups A,B,AB and O. Other blood group antigens except ABO had no change. FCM analy-sis showed that A antigens and A1 antigens disappeared while H antigens increased. It indicated that αNAGA successfully converted human blood group A RBCs to universally transfusable group O RBCs without the risk of ABO-incompatible transfusion reactions. This αNAGA was suitable for producing universal RBCs to increase clinical transfusion safety,improve the RBCs supply,and to decrease transfusion cost and support transfusion service in case of emergency. | YU ChengYu XU Hua WANG LiSheng ZHANG JianGeng ZHANG YangPei | 2008 | Chinese Science Bulletin2008，53，13： | 5 |
| 9 | The 2018 M_S 5.9 Mojiang Earthquake:Source model and intensity based on near-field seismic recordings显示文摘On September 8, 2018, an M_S 5.9 earthquake struck Mojiang, a county in Yunnan Province, China. We collect near-field seismic recordings(epicentral distances less than 200 km) to relocate the mainshock and the aftershocks within the first 60 hours to determine the focal mechanism solutions of the mainshock and some of the aftershocks and to invert for the finite-fault model of the mainshock.The focal mechanism solution of the mainshock and the relocation results of the aftershocks constrain the mainshock on a nearly vertical fault plane striking northeast and dipping to the southeast. The inversion of the finite-fault model reveals only a single slip asperity on the fault plane. The major slip is distributed above the initiation point, ~14 km wide along the down-dip direction and ~14 km long along the strike direction, with a maximal slip of ~22 cm at a depth of ~6 km. The focal mechanism solutions of the aftershocks show that most of the aftershocks are of the strike-slip type, a number of them are of the normal-slip type, and only a few of them are of the thrust-slip type.On average, strike-slip is dominant on the fault plane of the mainshock, as the focal mechanism solution of the mainshock suggests, but when examined in detail, slight thrust-slip appears on the southwest of the fault plane while an obvious part of normal-slip appears on the northeast, which is consistent with what the focal mechanism solutions of the aftershocks display. The multiple types of aftershock focal mechanism solutions and the slip details of the mainshock both suggest a complex tectonic setting, stress setting, or both. The intensity contours predicted exhibit a longer axis trending from northeast to southwest and a maximal intensity of Ⅷ around the epicenter and in the northwest. | Xu Zhang Zhen Fu LiSheng Xu ChunLai Li Hong Fu | 2019 | Earth and Planetary Physics2019，3，3： | 4 |
| 10 | Extended Range(10–30 Days) Heavy Rain Forecasting Study Based on a Nonlinear Cross-Prediction Error Model显示文摘Extended range(10–30 d) heavy rain forecasting is difficult but performs an important function in disaster prevention and mitigation. In this paper,a nonlinear cross prediction error(NCPE) algorithm that combines nonlinear dynamics and statistical methods is proposed. The method is based on phase space reconstruction of chaotic single-variable time series of precipitable water and is tested in 100 global cases of heavy rain. First,nonlinear relative dynamic error for local attractor pairs is calculated at different stages of the heavy rain process,after which the local change characteristics of the attractors are analyzed. Second,the eigen-peak is defined as a prediction indicator based on an error threshold of about 1.5,and is then used to analyze the forecasting validity period. The results reveal that the prediction indicator features regarded as eigenpeaks for heavy rain extreme weather are all reflected consistently,without failure,based on the NCPE model; the prediction validity periods for 1–2 d,3–9 d and 10–30 d are 4,22 and 74 cases,respectively,without false alarm or omission. The NCPE model developed allows accurate forecasting of heavy rain over an extended range of 10–30 d and has the potential to be used to explore the mechanisms involved in the development of heavy rain according to a segmentation scale. This novel method provides new insights into extended range forecasting and atmospheric predictability,and also allows the creation of multi-variable chaotic extreme weather prediction models based on high spatiotemporal resolution data. | XIA Zhiye CHEN Hongbin XU Lisheng WANG Yongqian | 2015 | Advances in Atmospheric Sciences2015，32，12： | 4 |
| 11 | Source process of the 2010 Yushu,Qinghai,earthquake显示文摘On April 14th, 2010, at 07:49 am (Beijing Time) (April 13th, 2010, 23:49 UTC), an earthquake of MS7.1 occurred in Yushu county, Qinghai Province, China. According to the latest report from China Earthquake Network | Yong Zhang LiSheng Xu Yun-Tai Chen | 2010 | Science China Earth Sciences2010，53，9： | 4 |
| 12 | Source complexity of the 2016 M_W7.8 Kaikoura (New Zealand) earthquake revealed from teleseismic and InSAR data显示文摘On November 13, 2016, an MW7.8 earthquake struck Kaikoura in South Island of New Zealand. By means of back-projection of array recordings, ASTFs-analysis of global seismic recordings, and joint inversion of global seismic data and co-seismic In SAR data, we investigated complexity of the earthquake source. The result shows that the 2016 MW7.8 Kaikoura earthquake ruptured about 100 s unilaterally from south to northeast(~N28°–33°E), producing a rupture area about 160 km long and about 50 km wide and releasing scalar moment 1.01×1021 Nm. In particular, the rupture area consisted of two slip asperities, with one close to the initial rupture point having a maximal slip value ~6.9 m while the other far away in the northeast having a maximal slip value ~9.3 m. The first asperity slipped for about 65 s and the second one started 40 s after the first one had initiated. The two slipped simultaneously for about 25 s.Furthermore, the first had a nearly thrust slip while the second had both thrust and strike slip. It is interesting that the rupture velocity was not constant, and the whole process may be divided into 5 stages in which the velocities were estimated to be 1.4 km/s, 0 km/s, 2.1 km/s, 0 km/s and 1.1 km/s, respectively. The high-frequency sources distributed nearly along the lower edge of the rupture area, the highfrequency radiating mainly occurred at launching of the asperities, and it seemed that no high-frequency energy was radiated when the rupturing was going to stop. | HaiLin Du Xu Zhang LiSheng Xu WanPeng Feng Lei Yi Peng Li | 2018 | Earth and Planetary Physics2018，2，4： | 4 |
| 13 | Source process of M_s6.4 earthquake in Ning’er, Yunnan in 2007显示文摘The moment tensor solution, source time function and spatial-temporal rupture process of the MS6.4 earthquake, which occurred in Ning’er, Yunnan Province, are obtained by inverting the broadband waveform data of 20 global stations. The inverted result shows that the scalar seismic moment is 5.51×1018 Nm, which corresponds to a moment magnitude of MW 6.4. The correspondent best double couple solution results in two nodal planes of strike 152°/dip 54°/rake 166°, and strike 250°/dip 79°/ rake 37°, respectively. Considering the isoseismals and geological structures in the meizoseismal region, the first nodal plane (strike 152°/ dip 54°/ rake 166°) is preferred to be the seismogenic fault. Thus, the MS6.4 earthquake occurred mainly along a right-lateral fault striking 152°. The source time function shows that the duration time of the earthquake is about 14 s. The most of the energy releases within the first 11 s and in 11-14 s the rupture is weak. The snapshots of the slip-rate indicate that the rupture process has 3 more detailed stages. In the first stage of the first 4 s after rupture initiation, the rupture propagates simultaneously toward both strike and dip directions; in the second stage of the following 3 s, the rupture extends to down-dip direction; and in the third stage, the rupture looks to be scattering on the fault. In general, this earthquake is of bilateral rupture, and the rupture mainly takes place in strike-dip direction. The major ruptured area is in the shape of a diamond with a dimension of 19 km. On the whole fault plane, the maximum slip is about 1.2 m, the average slip is about 0.1 m, the maxi-mum slip-rate is 0.4 m/s and the average slip-rate is 0.1 m/s. The features of the co-seismic theoretical displacement field of the Ning’er earthquake fault, calculated based on the inverted fault parameters, are consistent with those of the observed isoseismals. | ZHANG Yong XU LiSheng CHEN YunTai FENG WanPeng DU HaiLin | 2009 | Science China Earth Sciences2009，52，2： | 4 |
| 14 | Fast inversion of rupture process of the 14 April 2010 Yushu,Qinghai,earthquake显示文摘Four results of the rupture process of 14 April 2010 Yushu, Qinghai, earthquake, obtained by inverting the broadband seismic data of Global Seismographic Network (GSN) based on the inversion method of earthquake rupture process, were compared and discussed. It is found that the Yushu earthquake has several basic characteristics as follows: 1 There exist two principal sub-events which correspond to two slip-concentrated patches being located near the hypocenter and to the southeast of the epicenter. The rupture of the slip-concentrated patch to the southeast of the epicenter broke though the ground surface; 2 The peak slip and peak slip-rate are about 2.1 m and 1.1 m/s, respectively, indicating that the Yushu earthquake is an event with large slip-rate on the fault plane; 3 Overall the Yushu earthquake is a unilateral rupture event with the rupture mainly propagating southeastward. The strong focusing of the seismic energy in the southeast of the epicenter due to the 'seismic Doppler effect' reasonably accounts for the tremendous damage in the Yushu city. | Yong Zhang Lisheng Xu Yun-tai Chen | 2010 | Earthquake Science2010，23，3： | 2 |
| 15 | Noninvasive Ultrasound Stimulation of Ventral Tegmental Area Induces Reanimation from General Anaesthesia in Mice显示文摘Evidence in animals suggests that deep brain stimulation or optogenetics can be used for recovery from disorders of consciousness(DOC).However,these treatments require invasive procedures.This report presents a noninvasive strategy to stimulate central nervous system neurons selectively for recovery from DOC in mice.Through the delivery of ultrasound energy to the ventral tegmental area,mice were aroused from an unconscious,anaesthetized state in this study,and this process was controlled by adjusting the ultrasound parameters.The mice in the sham group under isoflurane-induced,continuous,steady-state general anaesthesia did not regain their righting reflex.On insonation,the emergence time from inhaled isoflurane anaesthesia decreased(sham.13.63±0.53 min,ultrasound.1.5±0.19 min,p<0.001).Further,the induction time(sham.12.0±0.6 min,ultrasound.17.88±0.64 min,p<0.001)and the concentration for 50%of the maximal effect(EC50)of isoflurane(sham.0.6%,ultrasound.0.7%)increased.In addition,ultrasound stimulation reduced the recovery time in mice with traumatic brain injury(sham.30.38±1.9 min,ultrasound.7.38±1.02 min,p<0.01).This noninvasive strategy could be used on demand to promote emergence from DOC and may be a potential treatment for such disorders. | Tianyuan Bian Wen Meng Meihong Qiu Zhigang Zhong Zhengrong Lin Junjie Zou Yibo Wang Xiaowei Huang Lisheng Xu Tifei Yuan Zhili Huang Lili Niu Long Meng Hairong Zheng | 2021 | Research2021，，1： | 2 |
| 16 | The Shock Response and Spall Mechanism of Mg-Al-Zn Alloy:Molecular Dynamics Study显示文摘Shock responses of Mg-Al-Zn alloy are investigated by the molecular dynamics(MD)method.The wave propagation,plastic deformation behavior and failure mechanism along the[0001]and[1010]orientations are analyzed.For both orientations,simulation results show that the shock wave has an obvious double-wave structure(plastic-elastic)under a piston velocity of 1200 m/s.A higher Hugoniot elastic limit(HEL)is observed for[0001]-oriented shock.When the shock pressure is along the[1010]direction,the distance between plastic and elastic waves is closer,and higher dislocation density and more twins are observed.Moreover,the spall strength for[1010]-oriented shock is predicted to be higher.In addition,the wave interactions,HEL and spall strength predicted for Mg-Al-Zn alloy are compared with the experimental results and MD simulation results of Mg single crystal in the literature.It is concluded that the shock performance of Mg-Al-Zn is better than that of Mg single crystal. | Xiaoyue Yang Shuang Xu Lisheng Liu | 2022 | Acta Mechanica Solida Sinica2022，35，3： | 2 |
| 17 | Error Sensitivity Analysis in 10–30-Day Extended Range Forecasting by Using a Nonlinear Cross-Prediction Error Model显示文摘Extended range forecasting of 10–30 days, which lies between medium-term and climate prediction in terms of timescale, plays a significant role in decision-making processes for the prevention and mitigation of disastrous meteorological events. The sensitivity of initial error, model parameter error, and random error in a nonlinear crossprediction error(NCPE) model, and their stability in the prediction validity period in 10–30-day extended range forecasting, are analyzed quantitatively. The associated sensitivity of precipitable water, temperature, and geopotential height during cases of heavy rain and hurricane is also discussed. The results are summarized as follows. First, the initial error and random error interact. When the ratio of random error to initial error is small(10^(–6)–10^(–2)), minor variation in random error cannot significantly change the dynamic features of a chaotic system, and therefore random error has minimal effect on the prediction. When the ratio is in the range of 10^(–1)–2(i.e., random error dominates), attention should be paid to the random error instead of only the initial error. When the ratio is around 10^(–2)–10^(–1), both influences must be considered. Their mutual effects may bring considerable uncertainty to extended range forecasting, and de-noising is therefore necessary. Second, in terms of model parameter error, the embedding dimension m should be determined by the factual nonlinear time series. The dynamic features of a chaotic system cannot be depicted because of the incomplete structure of the attractor when m is small. When m is large, prediction indicators can vanish because of the scarcity of phase points in phase space. A method for overcoming the cut-off effect(m > 4) is proposed. Third, for heavy rains, precipitable water is more sensitive to the prediction validity period than temperature or geopotential height; however, for hurricanes, geopotential height is most sensitive, followed by precipitable water. | zhiye xia lisheng xu hongbin chen yongqian wang jinbao liu wenlan feng | 2017 | Journal of Meteorological Research2017，31，3： | 1 |
| 18 | Morphology Variability Analysis of Wrist Pulse Waveform for Assessment of Arteriosclerosis Status显示文摘 | Lisheng Xu Max Q.-H. Meng Xianghua Qi Kuanquan Wang | 2010 | Journal of Medical Systems2010，，3： | 1 |
| 19 | Research on Evaluation Model for Secondary Task Driving Safety Based on Driver Eye Movements显示文摘 | Lisheng Jin Huacai Xian Yuying Jiang Qingning Niu Meijiao Xu Dongmei Yang Heiner Bubb | 2014 | Advances in Mechanical Engineering2014，，： | 1 |
| 20 | Effects of polyhydroxy compounds on enzymatic synthesis of L-tryptophan catalyzed by tryptophan synthase显示文摘 | Xu Lisheng Wang Zhiyuan Liu Junzhong | 2012 | Catalysis Letters2012，142，2： | 1 |
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