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Papers by Chengli liu

Research paper thumbnail of Integrated Analysis of the 2020 Mw 7.4 La Crucecita, Oaxaca, Mexico, Earthquake from Joint Inversion of Geodetic and Seismic Observations

Bulletin of the Seismological Society of America, 2022

On 23 June 2020, a major thrust faulting earthquake ruptured the megathrust near a sharp transiti... more On 23 June 2020, a major thrust faulting earthquake ruptured the megathrust near a sharp transition of the plate boundary beneath the Mexico subduction zone, overlapping the rupture area of the 1965 Mw 7.5 (Ms 7.6) event. A joint inversion of geodetic and seismic observations and prediction of coastal uplifts indicate a compact rupture with a peak slip of ∼3.6 m. The cumulative seismic moment is 1.41×1020 N·m within 20 s of coseismic rupture, giving a moment magnitude of Mw 7.4. The rupture propagated with a relatively high rupture speed (∼3.5 km/s) downdip at depths from 20 to 30 km, terminating at the edge of a slow slip region. The energy-related static stress drop is ∼8.1 MPa. The aftershock distribution and the region where slow slip events occurred show a clear complementary relationship with the coseismic rupture zone of the 2020 Oaxaca event. The high-stress drop and associated deep compact rupture pattern suggest a homogeneous asperity with high strength beneath the Oaxaca...

Research paper thumbnail of Overlapped Postseismic Deformation Caused by Afterslip and Viscoelastic Relaxation Following the 2015 Mw 7.8 Gorkha (Nepal) Earthquake

Journal of Geophysical Research: Solid Earth, 2021

Research paper thumbnail of The 29 July 2021 M W 8.2 Chignik, Alaska Peninsula Earthquake Rupture Inferred from Seismic and Geodetic Observations: Re‐rupture of the Western 2/3 of the 1938 Rupture Zone

Geophysical Research Letters, 2022

Research paper thumbnail of Seismic and Geodetic Analysis of Rupture Characteristics of the 2020 Mw 6.5 Monte Cristo Range, Nevada, Earthquake

Bulletin of the Seismological Society of America, 2021

The largest earthquake since 1954 to strike the state of Nevada, United States, ruptured on 15 Ma... more The largest earthquake since 1954 to strike the state of Nevada, United States, ruptured on 15 May 2020 along the Monte Cristo range of west-central Nevada. The Mw 6.5 event involved predominantly left-lateral strike-slip faulting with minor normal components on three aligned east–west-trending faults that vary in strike by 23°. The kinematic rupture process is determined by joint inversion of Global Navigation Satellite Systems displacements, Interferometric Synthetic Aperture Radar (InSAR) data, regional strong motions, and teleseismic P and SH waves, with the three-fault geometry being constrained by InSAR surface deformation observations, surface ruptures, and relocated aftershock distributions. The average rupture velocity is 1.5 km/s, with a peak slip of ∼1.6 m and a ∼20 s rupture duration. The seismic moment is 6.9×1018 N·m. Complex surface deformation is observed near the fault junction, with a deep near-vertical fault and a southeast-dipping fault at shallow depth on th...

Research paper thumbnail of Additional file 7 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 7: Supplemental S7. NL-VS-L1 GO Enrichment (Cellular Component).

Research paper thumbnail of Additional file 4 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 4: Supplemental S4. NL-VS-L0 GO Enrichment (Cellular Component).

Research paper thumbnail of Additional file 12 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 12: Supplemental S12. A flowchart of the RNAseq process.

Research paper thumbnail of Additional file 10 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 10: Supplemental S10. The DEGs of CO and FT.

Research paper thumbnail of Additional file 9 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 9: Supplemental S9. The DEGs related to plant hormone.

Research paper thumbnail of The expression of B7-H3 and B7-H4 in human gallbladder carcinoma and their clinical implications

European review for medical and pharmacological sciences, 2016

OBJECTIVE To investigate the expression of B7-H3 and B7-H4 and their clinical implications in hum... more OBJECTIVE To investigate the expression of B7-H3 and B7-H4 and their clinical implications in human gallbladder carcinoma. PATIENTS AND METHODS The expression of B7-H3 and B7-H4 in the 252 samples (126 cases of chronic cholecystitis and 126 cases of gallbladder cancer) was detected by the streptavidin-peroxidase immunohistochemical method, and their associations with tumor classification, clinical grade, and recurrence were assessed. RESULTS In chronic cholecystitis tissue, B7-H3 and B7-H4 were not detected. In 126 cases of gallbladder carcinoma, the positive rates of B7-H3 and B7-H4 expression were 66.67% and 69.05% respectively (p < 0.05). The positive rate of B7-H3 in the primary-onset group was 53.57%, and that in recurrence group was 92.86% (p < 0.05). The positive rate of B7-H4 in the primary-onset group was 85.19%, and that in recurrence group was 40.00% (p < 0.05). Expression of B7-H3 was consistent with B7-H4 expression in gallbladder carcinoma. CONCLUSIONS B7-H3 a...

Research paper thumbnail of Towards combining multiple geophysical datasets to determine earthquake source parameters in China

Science China Earth Sciences, 2016

Earthquake source parameters, including magnitude, location, focal mechanism, rupture process are... more Earthquake source parameters, including magnitude, location, focal mechanism, rupture process are key factors for understanding seismogenic environment, mitigating seismic hazards, estimating earthquake triggering, and tectonic analysis. Traditionally, source parameters are determined by seismological methods. For example, Fang L H et al. (2014) relocated the 2012 Ms6.6 Xinjiang Xinyuan earthquake sequence using local seismograms based on the double difference method, and obtained the distribution of aftershocks with horizontal errors of about 0.1 km, which demonstrates the capability of seismological methods in resolving certain source parameters. However, source parameters determined by seismic data alone may suffer from the problems of non-uniqueness or large uncertainties. For example, a lot of kinematic rupture models with significant differences were proposed shortly after the occurrences of the 2008 Wenchuan earthquake and the 2013 Lushan earthquake. These discrepancies are m...

Research paper thumbnail of Molecular characterization and expression analysis of pitaya (Hylocereus polyrhizus) HpLRR genes in response to Neoscytalidium dimidiatum infection

BMC Plant Biology, 2020

Background Canker disease caused by Neoscytalidium dimidiatum is a devastating disease resulting ... more Background Canker disease caused by Neoscytalidium dimidiatum is a devastating disease resulting in a major loss to the pitaya industry. However, resistance proteins in plants play crucial roles to against pathogen infection. Among resistance proteins, the leucine-rich repeat (LRR) protein is a major family that plays crucial roles in plant growth, development, and biotic and abiotic stress responses, especially in disease defense. Results In the present study, a transcriptomics analysis identified a total of 272 LRR genes, 233 of which had coding sequences (CDSs), in the plant pitaya (Hylocereus polyrhizus) in response to fungal Neoscytalidium dimidiatum infection. These genes were divided into various subgroups based on specific domains and phylogenetic analysis. Molecular characterization, functional annotation of proteins, and an expression analysis of the LRR genes were conducted. Additionally, four LRR genes (CL445.Contig4_All, Unigene28_All, CL28.Contig2_All, and Unigene2712_...

Research paper thumbnail of Slip rate of the seismogenic fault of the 2021 Maduo earthquake in western China inferred from GPS observations

Science China Earth Sciences, 2021

Seismic and field observations indicate that the Mw7.4 Maduo earthquake ruptured the Jiangcuo fau... more Seismic and field observations indicate that the Mw7.4 Maduo earthquake ruptured the Jiangcuo fault, which is a secondary fault ∼85 km south of the northern boundary of the Bayan Hor block in western China. The kinematic characteristics of the Jiangcuo fault can shed lights on the seismogenic mechanism of this earthquake. Slip rate is one of the key parameters to describe the kinematic features of a fault, which can also provide quantitative evidences for regional seismic hazard assessments. However, due to lack of effective observations, the slip rate of the Jiangcuo fault has not been studied quantitatively. In this study, we consider the interaction between the Jiangcuo fault and the eastern Kunlun fault, and estimate the slip rates of the two faults using the interseismic GPS observations across the seismogenic region. The inferred results show that the slip rates of the Jiangcuo fault and the Tuosuo Lake segment of the Kunlun fault are 1.2±0.8 and 5.4±0.3 mm a−1, respectively. Combining the slip rate with the average slip inferred from the coseismic slip model, the earthquake recurrence interval of the Jiangcuo fault is estimated to be 1800−700+3700 years (1100–5500 years). Based on the results derived from previous studies, as well as calculations in this study, we infer that the slip rate of the Kunlun fault may decrease gradually from the Tuosuo Lake segment to the eastern tip. The Jiangcuo fault and its adjacent parallel secondary faults may have absorbed the relative motion of blocks together with the Kunlun fault.

Research paper thumbnail of Source Process of the 24 January 2020 Mw 6.7 East Anatolian Fault Zone, Turkey, Earthquake

Seismological Research Letters, 2020

The 24 January 2020 Mw 6.7 earthquake in eastern Turkey was due to the reactivation of the strike... more The 24 January 2020 Mw 6.7 earthquake in eastern Turkey was due to the reactivation of the strike-slip faulting between the Arabian and Anatolian plates. To gain insight into the source regime and its relationship with historical earthquakes, we determined the coseismic slip distribution of this event by joint analyses of Interferometric Synthetic Aperture Radar and teleseismic observations. Inversion results indicate that the main rupture asperity occurred in the southwest of the epicenter with a maximum slip of ∼1.9 m, showing a bilateral source process with an average rupture velocity of ∼1.6 km/s, and small slip extended to the surface near the epicenter. The estimated seismic moment is 1.4×1019 N·m, associated with a ∼50 km long and ∼15 km wide fault plane. The aftershocks distribution is obviously complementary with the coseismic rupture zone. That is, the majority of aftershocks clustered in the transitional regions from the large to small slip areas. The 2020 earthquake...

Research paper thumbnail of Rupture of the 2020 M W 7.8 Earthquake in the Shumagin Gap Inferred From Seismic and Geodetic Observations

Geophysical Research Letters, 2020

MOUNTING CONCERN over residue problems arising from the use of D.D.T. and other chlorinated hydro... more MOUNTING CONCERN over residue problems arising from the use of D.D.T. and other chlorinated hydrocarbon insecticides on pasture has highlighted the need for alternative chemicals capable of providing satisfactory control without undesirable side effects.

Research paper thumbnail of Differential Expression Analysis of Genes Related to Flesh Color in Hylocereu polyrhizus and Hylocereu undatus

Molecular Plant Breeding, 2021

Research paper thumbnail of Rupture process of the 7 January 2020, M W 6.4 Puerto Rico earthquake

Geophysical Research Letters, 2020

Research paper thumbnail of Interactions of Earthquakes in Central Italy over the Past 100 Yr through Coulomb Stress Changes, and Implications for Seismic Hazards

Bulletin of the Seismological Society of America, 2020

Italy has a historical earthquake record that is complete for events with a magnitude above 5.8 s... more Italy has a historical earthquake record that is complete for events with a magnitude above 5.8 since A.D. 1349, making it possible to study Coulomb failure stress changes (ΔCFS) over a long period. In this study, we investigated the interactions between moderate-to-large earthquakes through ΔCFS over 100 yr in central Italy. This region is characterized by intense seismicity with predominantly extensional components. Hence, earthquake hazard assessment is of great public concern. Besides, earthquake interactions on normal faults are relatively less studied compared to reverse and strike-slip faults. ΔCFS calculations in this study incorporated both coseismic stress transfer and postseismic viscoelastic relaxation, and found the epicenters of 13 out of 15 events located in positively stressed lobes induced by previous earthquakes, confirming a correlation between the ΔCFS pattern and locations of moderate-to-large earthquakes. Next, we estimated the current distribution of ΔCFS on a...

Research paper thumbnail of Co‐seismic rupture process of the large 2019 Ridgecrest earthquakes from joint inversion of geodetic and seismological observations

Geophysical Research Letters, 2019

Research paper thumbnail of Differential responses of the soil microbial community in two pitaya orchards with different mulch types

Research paper thumbnail of Integrated Analysis of the 2020 Mw 7.4 La Crucecita, Oaxaca, Mexico, Earthquake from Joint Inversion of Geodetic and Seismic Observations

Bulletin of the Seismological Society of America, 2022

On 23 June 2020, a major thrust faulting earthquake ruptured the megathrust near a sharp transiti... more On 23 June 2020, a major thrust faulting earthquake ruptured the megathrust near a sharp transition of the plate boundary beneath the Mexico subduction zone, overlapping the rupture area of the 1965 Mw 7.5 (Ms 7.6) event. A joint inversion of geodetic and seismic observations and prediction of coastal uplifts indicate a compact rupture with a peak slip of ∼3.6 m. The cumulative seismic moment is 1.41×1020 N·m within 20 s of coseismic rupture, giving a moment magnitude of Mw 7.4. The rupture propagated with a relatively high rupture speed (∼3.5 km/s) downdip at depths from 20 to 30 km, terminating at the edge of a slow slip region. The energy-related static stress drop is ∼8.1 MPa. The aftershock distribution and the region where slow slip events occurred show a clear complementary relationship with the coseismic rupture zone of the 2020 Oaxaca event. The high-stress drop and associated deep compact rupture pattern suggest a homogeneous asperity with high strength beneath the Oaxaca...

Research paper thumbnail of Overlapped Postseismic Deformation Caused by Afterslip and Viscoelastic Relaxation Following the 2015 Mw 7.8 Gorkha (Nepal) Earthquake

Journal of Geophysical Research: Solid Earth, 2021

Research paper thumbnail of The 29 July 2021 M W 8.2 Chignik, Alaska Peninsula Earthquake Rupture Inferred from Seismic and Geodetic Observations: Re‐rupture of the Western 2/3 of the 1938 Rupture Zone

Geophysical Research Letters, 2022

Research paper thumbnail of Seismic and Geodetic Analysis of Rupture Characteristics of the 2020 Mw 6.5 Monte Cristo Range, Nevada, Earthquake

Bulletin of the Seismological Society of America, 2021

The largest earthquake since 1954 to strike the state of Nevada, United States, ruptured on 15 Ma... more The largest earthquake since 1954 to strike the state of Nevada, United States, ruptured on 15 May 2020 along the Monte Cristo range of west-central Nevada. The Mw 6.5 event involved predominantly left-lateral strike-slip faulting with minor normal components on three aligned east–west-trending faults that vary in strike by 23°. The kinematic rupture process is determined by joint inversion of Global Navigation Satellite Systems displacements, Interferometric Synthetic Aperture Radar (InSAR) data, regional strong motions, and teleseismic P and SH waves, with the three-fault geometry being constrained by InSAR surface deformation observations, surface ruptures, and relocated aftershock distributions. The average rupture velocity is 1.5 km/s, with a peak slip of ∼1.6 m and a ∼20 s rupture duration. The seismic moment is 6.9×1018 N·m. Complex surface deformation is observed near the fault junction, with a deep near-vertical fault and a southeast-dipping fault at shallow depth on th...

Research paper thumbnail of Additional file 7 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 7: Supplemental S7. NL-VS-L1 GO Enrichment (Cellular Component).

Research paper thumbnail of Additional file 4 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 4: Supplemental S4. NL-VS-L0 GO Enrichment (Cellular Component).

Research paper thumbnail of Additional file 12 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 12: Supplemental S12. A flowchart of the RNAseq process.

Research paper thumbnail of Additional file 10 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 10: Supplemental S10. The DEGs of CO and FT.

Research paper thumbnail of Additional file 9 of Transcriptomic analysis of flower induction for long-day pitaya by supplementary lighting in short-day winter season

Additional file 9: Supplemental S9. The DEGs related to plant hormone.

Research paper thumbnail of The expression of B7-H3 and B7-H4 in human gallbladder carcinoma and their clinical implications

European review for medical and pharmacological sciences, 2016

OBJECTIVE To investigate the expression of B7-H3 and B7-H4 and their clinical implications in hum... more OBJECTIVE To investigate the expression of B7-H3 and B7-H4 and their clinical implications in human gallbladder carcinoma. PATIENTS AND METHODS The expression of B7-H3 and B7-H4 in the 252 samples (126 cases of chronic cholecystitis and 126 cases of gallbladder cancer) was detected by the streptavidin-peroxidase immunohistochemical method, and their associations with tumor classification, clinical grade, and recurrence were assessed. RESULTS In chronic cholecystitis tissue, B7-H3 and B7-H4 were not detected. In 126 cases of gallbladder carcinoma, the positive rates of B7-H3 and B7-H4 expression were 66.67% and 69.05% respectively (p < 0.05). The positive rate of B7-H3 in the primary-onset group was 53.57%, and that in recurrence group was 92.86% (p < 0.05). The positive rate of B7-H4 in the primary-onset group was 85.19%, and that in recurrence group was 40.00% (p < 0.05). Expression of B7-H3 was consistent with B7-H4 expression in gallbladder carcinoma. CONCLUSIONS B7-H3 a...

Research paper thumbnail of Towards combining multiple geophysical datasets to determine earthquake source parameters in China

Science China Earth Sciences, 2016

Earthquake source parameters, including magnitude, location, focal mechanism, rupture process are... more Earthquake source parameters, including magnitude, location, focal mechanism, rupture process are key factors for understanding seismogenic environment, mitigating seismic hazards, estimating earthquake triggering, and tectonic analysis. Traditionally, source parameters are determined by seismological methods. For example, Fang L H et al. (2014) relocated the 2012 Ms6.6 Xinjiang Xinyuan earthquake sequence using local seismograms based on the double difference method, and obtained the distribution of aftershocks with horizontal errors of about 0.1 km, which demonstrates the capability of seismological methods in resolving certain source parameters. However, source parameters determined by seismic data alone may suffer from the problems of non-uniqueness or large uncertainties. For example, a lot of kinematic rupture models with significant differences were proposed shortly after the occurrences of the 2008 Wenchuan earthquake and the 2013 Lushan earthquake. These discrepancies are m...

Research paper thumbnail of Molecular characterization and expression analysis of pitaya (Hylocereus polyrhizus) HpLRR genes in response to Neoscytalidium dimidiatum infection

BMC Plant Biology, 2020

Background Canker disease caused by Neoscytalidium dimidiatum is a devastating disease resulting ... more Background Canker disease caused by Neoscytalidium dimidiatum is a devastating disease resulting in a major loss to the pitaya industry. However, resistance proteins in plants play crucial roles to against pathogen infection. Among resistance proteins, the leucine-rich repeat (LRR) protein is a major family that plays crucial roles in plant growth, development, and biotic and abiotic stress responses, especially in disease defense. Results In the present study, a transcriptomics analysis identified a total of 272 LRR genes, 233 of which had coding sequences (CDSs), in the plant pitaya (Hylocereus polyrhizus) in response to fungal Neoscytalidium dimidiatum infection. These genes were divided into various subgroups based on specific domains and phylogenetic analysis. Molecular characterization, functional annotation of proteins, and an expression analysis of the LRR genes were conducted. Additionally, four LRR genes (CL445.Contig4_All, Unigene28_All, CL28.Contig2_All, and Unigene2712_...

Research paper thumbnail of Slip rate of the seismogenic fault of the 2021 Maduo earthquake in western China inferred from GPS observations

Science China Earth Sciences, 2021

Seismic and field observations indicate that the Mw7.4 Maduo earthquake ruptured the Jiangcuo fau... more Seismic and field observations indicate that the Mw7.4 Maduo earthquake ruptured the Jiangcuo fault, which is a secondary fault ∼85 km south of the northern boundary of the Bayan Hor block in western China. The kinematic characteristics of the Jiangcuo fault can shed lights on the seismogenic mechanism of this earthquake. Slip rate is one of the key parameters to describe the kinematic features of a fault, which can also provide quantitative evidences for regional seismic hazard assessments. However, due to lack of effective observations, the slip rate of the Jiangcuo fault has not been studied quantitatively. In this study, we consider the interaction between the Jiangcuo fault and the eastern Kunlun fault, and estimate the slip rates of the two faults using the interseismic GPS observations across the seismogenic region. The inferred results show that the slip rates of the Jiangcuo fault and the Tuosuo Lake segment of the Kunlun fault are 1.2±0.8 and 5.4±0.3 mm a−1, respectively. Combining the slip rate with the average slip inferred from the coseismic slip model, the earthquake recurrence interval of the Jiangcuo fault is estimated to be 1800−700+3700 years (1100–5500 years). Based on the results derived from previous studies, as well as calculations in this study, we infer that the slip rate of the Kunlun fault may decrease gradually from the Tuosuo Lake segment to the eastern tip. The Jiangcuo fault and its adjacent parallel secondary faults may have absorbed the relative motion of blocks together with the Kunlun fault.

Research paper thumbnail of Source Process of the 24 January 2020 Mw 6.7 East Anatolian Fault Zone, Turkey, Earthquake

Seismological Research Letters, 2020

The 24 January 2020 Mw 6.7 earthquake in eastern Turkey was due to the reactivation of the strike... more The 24 January 2020 Mw 6.7 earthquake in eastern Turkey was due to the reactivation of the strike-slip faulting between the Arabian and Anatolian plates. To gain insight into the source regime and its relationship with historical earthquakes, we determined the coseismic slip distribution of this event by joint analyses of Interferometric Synthetic Aperture Radar and teleseismic observations. Inversion results indicate that the main rupture asperity occurred in the southwest of the epicenter with a maximum slip of ∼1.9 m, showing a bilateral source process with an average rupture velocity of ∼1.6 km/s, and small slip extended to the surface near the epicenter. The estimated seismic moment is 1.4×1019 N·m, associated with a ∼50 km long and ∼15 km wide fault plane. The aftershocks distribution is obviously complementary with the coseismic rupture zone. That is, the majority of aftershocks clustered in the transitional regions from the large to small slip areas. The 2020 earthquake...

Research paper thumbnail of Rupture of the 2020 M W 7.8 Earthquake in the Shumagin Gap Inferred From Seismic and Geodetic Observations

Geophysical Research Letters, 2020

MOUNTING CONCERN over residue problems arising from the use of D.D.T. and other chlorinated hydro... more MOUNTING CONCERN over residue problems arising from the use of D.D.T. and other chlorinated hydrocarbon insecticides on pasture has highlighted the need for alternative chemicals capable of providing satisfactory control without undesirable side effects.

Research paper thumbnail of Differential Expression Analysis of Genes Related to Flesh Color in Hylocereu polyrhizus and Hylocereu undatus

Molecular Plant Breeding, 2021

Research paper thumbnail of Rupture process of the 7 January 2020, M W 6.4 Puerto Rico earthquake

Geophysical Research Letters, 2020

Research paper thumbnail of Interactions of Earthquakes in Central Italy over the Past 100 Yr through Coulomb Stress Changes, and Implications for Seismic Hazards

Bulletin of the Seismological Society of America, 2020

Italy has a historical earthquake record that is complete for events with a magnitude above 5.8 s... more Italy has a historical earthquake record that is complete for events with a magnitude above 5.8 since A.D. 1349, making it possible to study Coulomb failure stress changes (ΔCFS) over a long period. In this study, we investigated the interactions between moderate-to-large earthquakes through ΔCFS over 100 yr in central Italy. This region is characterized by intense seismicity with predominantly extensional components. Hence, earthquake hazard assessment is of great public concern. Besides, earthquake interactions on normal faults are relatively less studied compared to reverse and strike-slip faults. ΔCFS calculations in this study incorporated both coseismic stress transfer and postseismic viscoelastic relaxation, and found the epicenters of 13 out of 15 events located in positively stressed lobes induced by previous earthquakes, confirming a correlation between the ΔCFS pattern and locations of moderate-to-large earthquakes. Next, we estimated the current distribution of ΔCFS on a...

Research paper thumbnail of Co‐seismic rupture process of the large 2019 Ridgecrest earthquakes from joint inversion of geodetic and seismological observations

Geophysical Research Letters, 2019

Research paper thumbnail of Differential responses of the soil microbial community in two pitaya orchards with different mulch types