Journal of Geophysical Research: Solid Earth最新文献

{"title":"Resolving Mantle Composition Suggests a Warmer East Antarctic Mantle","authors":"Lu Li,&nbsp;Alan R. A. Aitken,&nbsp;Lutz Gross,&nbsp;Andrea Codd","doi":"10.1029/2024JB029677","DOIUrl":"https://doi.org/10.1029/2024JB029677","url":null,"abstract":"<p>Antarctica's geothermal heat flow and its glacial isostatic adjustment response are critical to understand ice sheet stability. These demand a knowledge of the temperature of the Antarctic lithosphere, but challenges remain in resolving mantle thermomechanical properties. Here we use a two-stage process to resolve mantle temperature and composition. First, we derive an optimized relationship between shear-wave velocity and temperature, density, and composition, constrained by temperature, attenuation, and the average viscosity of the oceanic upper mantle. Applying this conversion relationship to a seismic shear-wave velocity model from adjoint tomography (ANT-20) yields an estimate of mantle density and temperature. In the second stage we apply a 3D finite-element-method gravity inversion to correct density distribution for the Antarctic lithosphere. The updated density structure further constrains the composition and so the temperature of the lithospheric mantle. Factoring in changes in mantle composition, areas with depleted mantle require a higher temperature than the initial estimate to fit the seismic velocity and density structure. Compared with a primitive mantle, the temperature in the depleted mantle is increased by up to 200°C. From the updated temperature field, changes to the lithosphere thickness, mantle viscosity, and geothermal heat flow are defined: in East Antarctica, the low viscosity area is largely unchanged (&lt;10²³ Pa s), while the estimated lithosphere thickness must decrease by up to 150 km, and heat flow must increase by 3–10 mW/m². Collectively, the effects of an increased mantle temperature estimate suggest that a more dynamic and climate-responsive East Antarctic Ice Sheet is possible.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 3","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB029677","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143497239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stratigraphy-Induced Localization of Microseismicity During CO2 Injection in Illinois Basin","authors":"N. Bondarenko,&nbsp;Y. Podladchikov,&nbsp;S. Williams-Stroud,&nbsp;R. Makhnenko","doi":"10.1029/2024JB029526","DOIUrl":"https://doi.org/10.1029/2024JB029526","url":null,"abstract":"<p>Subsurface fluid injection stimulates complex hydromechanical interaction, necessitating the integration of geomechanical data across spatial and temporal scales to consider the sophisticated behavior. Induced seismic response is usually associated with the complex reservoir architecture and pre-existing features that are three-dimensional, such as local stratigraphy, fractures, faults, and other discontinuities. This study encompasses laboratory characterization of the coupled hydromechanical response of cores extracted from rock formations in Illinois Basin: reservoir - Mt. Simon sandstone, basal seal - Argenta sandstone, and crystalline basement - Precambrian rhyolite. High-resolution numerical modeling allows considering the three-dimensional complexity of the Illinois Basin Decatur Project with spatial resolution comparable to one of the active seismic surveys. A detailed reconstruction of the evolving state of stress in formations lacking direct stress measurements is achieved by numerical modeling that integrated laboratory-derived hydromechanical properties, a porosity-permeability relationship, active seismic data, and an inverted three-dimensional porosity distribution. It appears that the microseismic clusters, mainly observed in the crystalline basement during the injection, are linked to zones experiencing more critically stressed conditions prior to injection. These zones have a potential for reactivation during the injection and are attributed to the specific local stratigraphy of the injection site, as well as transfer of triggering perturbations during the injection.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 3","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB029526","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystal-Rich Magma Is Solid-Like and Liquefies When Deformed","authors":"Atsuko Namiki,&nbsp;Konan Saito,&nbsp;Satoshi Okumura,&nbsp;Masato Hoshino,&nbsp;Kentaro Uesugi,&nbsp;Kazuhiro Tsukada,&nbsp;Natsuko Takagi,&nbsp;Michael Manga","doi":"10.1029/2024JB030483","DOIUrl":"https://doi.org/10.1029/2024JB030483","url":null,"abstract":"<p>The rheology of highly crystalline magma regulates its mobility, which may, in turn, determine the occurrence and styles of volcanic eruptions. We measured the rheology of high-temperature magma with a basaltic-andesite composition to document the properties that govern the transition from solid-like to liquid-like behavior. The measured elasticity in the solid-like regime is three orders of magnitude lower than the shear modulus for a viscous silicate melt at high frequency. A considerable reduction of shear modulus is observed by increasing strain amplitude, indicating that the crystals unjam and the magma undergoes liquefaction. Crystal-rich magma behaves as a dense suspension in which rheology changes rapidly with increasing strain and strain rate. Such characteristics enable the rapid mobilization of magma to trigger eruptions.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 3","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030483","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of the 2021 Fagradalsfjall Eruption (Iceland) Revealed by Volcanic Tremor Patterns","authors":"Jean Soubestre,&nbsp;Corentin Caudron,&nbsp;Oleg Melnik,&nbsp;Thomas Lecocq,&nbsp;Claude Jaupart,&nbsp;Nikolai M. Shapiro,&nbsp;Cyril Journeau,&nbsp;Yeşim Çubuk-Sabuncu,&nbsp;Kristín Jónsdóttir","doi":"10.1029/2024JB029380","DOIUrl":"https://doi.org/10.1029/2024JB029380","url":null,"abstract":"<p>Co-eruptive volcanic tremor during the 2021 Fagradalsfjall eruption in Iceland (19 March–18 September 2021) is characterized using seismic and visual data recorded close to the eruption site and across the Reykjanes Peninsula. An automatic seismic network-based approach reveals several tremor patterns associated with seven phases of the eruption, including (a) continuous tremor located beneath the eruption site and attributed to pressure changes in the shallow vent system(s) in phases I, III, and VII, and (b) two patterns of minute- and hour-long intermittent tremor in May (phase II) and July–August (phases IV–VI), respectively. The first intermittent pattern of minute-long tremor bursts associated with pulsating lava fountains in May is attributed to magma degassing in a shallow reservoir (top 100 m) connected to a top-conduit. The progressive enlargement of both the top-conduit and shallow reservoir with time is estimated quantitatively using a collapsing foam model. Sudden changes of their geometries, as detected from tremor characteristics, are systematically associated with observed crater collapse events. The second intermittent pattern of cyclic hour-long tremor episodes associated with episodic effusive activity in July–August is attributed to magma flowing and cooling in the feeder dike connected to a sill at 5 km depth. The sill is fed by a constant influx of magma from the deeper plumbing system and stores magma during low discharge periods. The observed cyclicity of both the eruptive activity and the tremor is interpreted quantitatively with a sill-dike model accounting for magma cooling and induced cyclic viscosity changes in the dike.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 2","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB029380","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microseismicity in the Large-N Swath-D Network: Revealing Seismic Sequences and Active Faults in the Eastern Alps","authors":"Gesa M. Petersen,&nbsp;Laurens J. Hofman,&nbsp;Jörn Kummerow,&nbsp;Simone Cesca","doi":"10.1029/2024JB030516","DOIUrl":"https://doi.org/10.1029/2024JB030516","url":null,"abstract":"<p>Uniformly spaced large-N seismic networks like the Swath-D (2017–2019), a densified part of the AlpArray initiative, provide unmatched opportunities to study microseismic activity and fault structures. Here, we show how the combined analysis of spatially and temporally clustered seismicity, precise relocations, waveform-based clustering, and moment tensor solutions for 67 earthquakes (1.1<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>&lt;</mo>\u0000 <msub>\u0000 <mi>M</mi>\u0000 <mi>w</mi>\u0000 </msub>\u0000 <mo>&lt;</mo>\u0000 </mrow>\u0000 <annotation> ${&lt; } {M}_{w}&lt; $</annotation>\u0000 </semantics></math>3.3) help to characterize the heterogeneous study region in the south-eastern Alps. We observe a strong zonation, with clustered microseismicity predominantly in the SE and NW parts of the study area. The identified sequences indicate a dominance of swarms in the NW compared to more mainshock-aftershock sequences in the SE, while both sequence types can occur in both regions. We identify multiple short faults in the NW with lengths of a few hundred meters, and distinguish two close fault structures activated in one sequence based on waveform similarity and focal mechanisms. Compared to predominant thrust faulting in the SE, normal and strike-slip faulting in the NW points to high regional complexity, with local stresses deviating from simple expectations of thrust faulting resulting from the Europe-Adria convergence. We find that zones of increased microseismic activity match zones of high P wave attenuation from a recent Qp model developed in the AlpArray initiative (Jozi Najafabadi et al., 2023, https://doi.org/10.1186/s40623-023-01942-0), supporting our interpretations of spatiotemporal patterns concerning crustal properties and tectonic activity. Our findings agree well with the occurrence of large historical earthquakes while simultaneously shedding light on much smaller seismogenic features.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 2","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030516","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of the Three-Dimensional Geometry of Fault Steps on Event Migration During Fluid-Induced Seismic Sequences","authors":"Vincent Roche,&nbsp;Mirko van der Baan,&nbsp;John Walsh","doi":"10.1029/2024JB029476","DOIUrl":"https://doi.org/10.1029/2024JB029476","url":null,"abstract":"<p>This study analyses how fault segmentation influences seismicity using 3 high-resolution earthquake catalogs from tectonically different areas. The studied event patterns reveal 8 fault steps with different 3D geometries reminiscent of relay zones, which refer to the area of displacement transfer between stepping and overlapping segments due to fault segmentation, including cylindrical, bifurcating, dip, strike and oblique relay zones as mapped from seismic reflection surveys. After detailed mapping of the spatiotemporal event migration, we analyze how 3D fault geometry, and in particular internal segmentation, controls event migration. First, we show that events can migrate continuously between segments via connected areas, producing along-step, around-step and bidirectional migrations, with steps acting as a barrier. Second, we observe seismicity that hops across bounding segments if a sufficiently strong magnitude event, with a relatively large rupture length compared to the step size, occurs near the step. Thus, fault segmentation, inherited from the early stage of fault development, controls earthquake migration patterns, if coupled with the type of forces driving seismicity. Specifically, tectonic-dominated sequences with relatively high magnitude seismicity and critically stressed segments promote inter-segment hopping. In contrast, fluid-dominated sequences, producing lower-magnitude events, are strongly channeled by connected segments.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 2","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB029476","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143475422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Near-Field Imaging of Near-Identical Mw5.9 Earthquakes in the Crust of Ibaraki, Japan","authors":"Keisuke Yoshida,&nbsp;Yo Fukushima,&nbsp;Yoshihiro Kaneko","doi":"10.1029/2024JB029791","DOIUrl":"https://doi.org/10.1029/2024JB029791","url":null,"abstract":"<p>Understanding the physical mechanisms of intraplate earthquakes requires a better understanding of the earthquake cycle and aseismic slip. A potential short-term repetition of intraplate earthquakes has been documented from interferometric synthetic aperture radar (InSAR) observations of two <i>M</i>_w5.9 events in northern Ibaraki Prefecture, Japan, which occurred on 19 March 2011 and 28 December 2016. However, our understanding based on surface geodetic measurements remains limited, particularly in terms of spatial resolution at depth. Here, we used the near-field seismic waveform data to complement InSAR data, thereby improving the spatial resolution of the coseismic slip distributions. First, we confirmed that the aftershocks of both events occurred along a common fault area. We then conducted a joint inversion that successfully reconciled near-identical surface displacements with the different seismic waveforms. Our results indicate that while the 2011 event mainly ruptured just updip of the hypocenter at 6 km depth, the 2016 rupture initiated deeper, at 10 km, and propagated to the shallow, northern side, causing large slip near the 2011 rupture area. The slip distributions of two events were complementary in the deeper portion (3 &lt; <i>z</i> &lt; 6 km), whereas those on the shallower side (<i>z</i> &lt; 3 km) largely overlapped, resulting in nearly identical surface displacements. Small earthquakes rarely occur shallower than 3 km, suggesting that this shallow segment releases accumulated strain aseismically. The two events repeatedly triggered seismic slip on this typically aseismic shallow segment, possibly due to dynamic stress changes.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 2","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB029791","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iterative Helmholtz Surface Wave Tomography Using Generalized Wave Equation Smoothing Splines—Application to Western Europe","authors":"A. Sergeant,&nbsp;K. Delage,&nbsp;S. Chevrot","doi":"10.1029/2024JB030087","DOIUrl":"https://doi.org/10.1029/2024JB030087","url":null,"abstract":"<p>Over the last decade, the expansion and densification of broadband seismic networks has led to an increased interest in tomographic approaches based on gradiometry, which relies on the spatial derivatives of the phase and amplitude of surface wavefronts. Nevertheless, the use of amplitude information remains challenging. In this study, we present a novel approach to Helmholtz tomography based on the use of generalized wave equation smoothing splines. The application of these generalized smoothing splines results in the generation of smooth amplitude and phase fields that satisfy the Helmholtz and transport equations, and hence the wave equation. This enables the direct derivation of phase velocity maps using the Helmholtz equation. We apply this new Helmholtz tomography approach to Rayleigh waves recorded by permanent and temporary networks in Western Europe from 2008 to 2022 to obtain phase velocity maps for periods between 25 and 120 s. These maps reveal the detailed structure of the crust and upper mantle in this region. Compared to eikonal tomography, the phase velocity anomalies obtained by Helmholtz tomography are stronger in amplitude and more sharply defined.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 2","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB030087","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evidence of Stress Control on Dissolution Cavity Growth Along Heterogeneous Field-Scale Fractures From Coupled Hydro-Mechanical-Chemical Modeling","authors":"Chuanyin Jiang,&nbsp;Xiaoguang Wang,&nbsp;Qinghua Lei,&nbsp;Lijun Liu,&nbsp;Guofeng Song,&nbsp;Hervé Jourde","doi":"10.1029/2024JB029901","DOIUrl":"https://doi.org/10.1029/2024JB029901","url":null,"abstract":"<p>We develop a new coupled hydro-mechanical-chemical (HMC) model to investigate the stress-controlled evolution of dissolution cavities along a hectometer-scale heterogeneous fracture. The fracture is conceptualized to consist of numerous patches associated with spatially-variable, stress and dissolution-dependent local stiffnesses and apertures. We consider the complete coupling relationships among mechanical deformation, fluid flow, and chemical dissolution within the fracture. More specifically, our model captures non-linear fracture deformational responses and their consequences on localized flow pattern and dissolutional aperture growth, as well as the feedback of dissolution to mechanical weakening and stress redistribution. We elucidate how geomechanical processes affect the aperture and flow patterns and the formation of small to large dissolution cavities. Our simulation results show that stress retards the permeability increase with the extent of retardation positively related to a dimensionless penetration length <i>l</i>_p′. Stress induces the splitting of the dissolution front, promoting localized flow and branched dissolution. At low <i>l</i>_p′ (wormhole dissolution regime), stress also promotes the sustained growth of dissolution branches. Hence, there is no apparent increase in global flow heterogeneity. At high <i>l</i>_p′, stress transitions the system from uniform dissolution into wormhole formation. Wormholes initiate from remote stiffer regions and converge toward the inlet. Our results have important implications for understanding various dissolution phenomena in subsurface fractured rocks, ranging from karstification to reservoir acidization.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 2","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024JB029901","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Denoising Offshore Distributed Acoustic Sensing Using Masked Auto-Encoders to Enhance Earthquake Detection","authors":"Qibin Shi,&nbsp;Marine A. Denolle,&nbsp;Yiyu Ni,&nbsp;Ethan F. Williams,&nbsp;Nan You","doi":"10.1029/2024JB029728","DOIUrl":"https://doi.org/10.1029/2024JB029728","url":null,"abstract":"<p>Offshore distributed acoustic sensing (DAS) has emerged as a powerful technology for seismic monitoring, expanding the capacities of cable networks and coastal seismic networks to monitor offshore seismicity. However, offshore DAS data often combine signals unfamiliar to seismologists, including new types of instrumental noise and ocean signals that overprint those from tectonic sources, which may hinder seismological research. We develop a self-supervised deep learning algorithm, a masked auto-encoder (MAE), to denoise DAS data for seismological purposes. The model is trained on DAS recordings of local earthquakes with randomly masked channels acquired on fiber-optic cables in the Cook Inlet offshore Alaska. To demonstrate the benefits of denoising for seismological research, we conduct the most fundamental steps to build any earthquake catalog: seismic phase picking, signal-to-noise ratio (SNR) estimation, and event association. We leverage the generalizability of ensemble deep learning models with cross-correlation to predict phase picks with sufficient precision for post-processing (e.g., earthquake location). The SNR of the denoised S waves of testing DAS data increased by 2.5 dB on average. The MAE denoised, on average, DAS data allows 2.7 times more S picks than the original noisy data for smaller regional earthquakes. The results demonstrate that our self-supervised MAE can elevate the accuracy and efficiency of seismic monitoring with higher earthquake detectability.</p>","PeriodicalId":15864,"journal":{"name":"Journal of Geophysical Research: Solid Earth","volume":"130 2","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}