样式: 排序: IF: - GO 导出 标记为已读
-
Using Vehicle-Induced DAS Signals for Near-Surface Characterization With High Spatiotemporal Resolution J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-23 Siyuan Yuan, Jingxiao Liu, Hae Young Noh, Robert Clapp, Biondo Biondi
Vehicle-induced seismic waves, generated as vehicles traverse the ground surface, carry valuable information for imaging the underlying near-surface structure. These waves propagate differently in the subsurface depending on soil properties at various spatial locations. By leveraging wave propagation characteristics, such as surface-wave velocity and attenuation, this study presents a novel method
-
Thermoelastic Properties of B2-Type FeSi Under Deep Earth Conditions: Implications for the Compositions of the Ultralow-Velocity Zones and the Inner Core J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-20 Tao Liu, Zhicheng Jing
The CsCl-type (B2) phase of FeSi (B2-FeSi) has been proposed as a candidate phase in the ultralow-velocity zones (ULVZs) at the base of the lower mantle and in the Earth's inner core. However, the elastic properties of B2-FeSi under relevant conditions remain unclear. Here we determine the density, elastic constants, and velocities of B2-FeSi at high pressures (90–390 GPa) and temperatures (3,000–6
-
Middle Neoproterozoic (Tonian) Polar Wander of South China: Paleomagnetism and ID-TIMS U-Pb Geochronology of the Laoshanya Formation J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-23 Justin A. D. Tonti-Filippini, Boris Robert, Élodie Muller, André N. Paul, Fabian Dellefant, Michael Wack, Jun Meng, Xixi Zhao, Urs Schaltegger, Stuart A. Gilder
Paleomagnetic records of middle Neoproterozoic (820 to 780 Ma) rocks display high amplitude directional variations that lead to large discrepancies in paleogeographic reconstructions. Hypotheses to explain these data include rapid true polar wander (TPW), a geomagnetic field geometry that deviates from a predominantly axial dipole field, a hyper-reversing field (>10 reversals/Ma), and/or undiagnosed
-
Water-Wave-Induced OBS Noise: Theories, Observations, and Potential Applications J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-25 Chun Zhang, Chao An
The horizontal records of ocean-bottom seismometers (OBS) are usually highly noisy, generally due to ocean-bottom currents tilting the instrument, which greatly limits their practical usage in ocean-bottom seismology. In shallow water, water waves with energy concentration around 0.07 Hz induce additional noise on OBSs. Such noise is not well understood. In this article, we propose a noise model to
-
Deciphering Clues Regarding Magma Composition Encoded in Quartz-Hosted Embayments and Melt Inclusions Through Direct Numerical Simulations J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-23 Zihan Wei, Anna C. Ruefer, Ayla S. Pamukcu, Jenny Suckale
Crystal-hosted melt embayments and melt inclusions partially record magmatic processes at depth, but it is not always obvious how to interpret this record. One impediment is our incomplete understanding of how embayments and melt inclusions form. In this study, we investigate the formation mechanism of embayments and melt inclusions during quartz growth to quantify the relationship between the compositions
-
Continental Residual Topography Extracted From Global Analysis of Crustal Structure J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-23 Simon N. Stephenson, Mark J. Hoggard, Megan C. Holdt, Nicky White
Continental topography is dominantly controlled by a combination of crustal thickness and density variations. Nevertheless, it is clear that some additional topographic component is supported by the buoyancy structure of the underlying lithospheric and convecting mantle. Isolating these secondary sources is not straightforward, but provides valuable information about mantle dynamics. Here, we estimate
-
Thank You to Our 2023 Reviewers J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-23 Alexandre Schubnel, Rachel Abercrombie, Yves Bernabé, Michael Bostock, Mark Dekkers, Anke Friedrich, Shin-Chan Han, Satoshi Ide, Isabelle Manighetti, Fenglin Niu, Douglas R. Schmitt, Jun Tsuchiya
The entire editorial board of the Journal of Geophysical Research-Solid Earth would like to sincerely thank all our colleagues who reviewed manuscripts for us in 2023. The hours they spent reading in order to provide insightful comments on manuscripts not only help improve the quality of these manuscripts but also ensure the scientific rigor of our reviewing process and eventually, of the research
-
Paleoenvironmental Controls on the Abundances of Magnetofossils in the Southwestern Iberian Margin J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-24 Kuang He, Xiangyu Zhao, Zhaoxia Jiang, Sanzhong Li
Magnetofossils are nanosized magnetic fossil remnants of magnetotactic bacteria (MTB) that are widely distributed in marine and freshwater sediments. Past studies have revealed that changes in the morphology and abundance of magnetofossils are linked with diverse paleoenvironmental changes, such as glacial-interglacial variation, redox conditions associated with primary productivity and organic matter
-
Advanced 3D TH and THM Modeling to Shed Light on Thermal Convection in Fault Zones With Varying Thicknesses J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-20 H. Duwiquet, A. Genter, L. Guillou-Frottier, F. V. Donzé, P. Ledru, F. Magri, T. Guillon, R. N. Horne, L. Arbaret, C. Souque
Fault zones exhibit 3D variable thickness, a feature that remains inadequately explored, particularly with regard to the impact on fluid flow. Upon analyzing an analytic solution, we examine 3D thermal-hydraulic (TH) dynamical models through a benchmark experiment, which incorporates a fault zone with thickness variations corresponding to realistic orders of magnitude. The findings emphasize an area
-
Revisiting the Tianwen Yellow Pumice (TYP) Eruption of Changbaishan Volcano: Tephra Correlation, Eruption Timing and Its Climatostratigraphical Context J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-23 Xuan-Yu Chen, Yi-Gang Xu, Pavel E. Tarasov, Christian Leipe, Ji-Hoon Kim, Shuang Yan, Myong-Ho Park, Jong-Hwa Chun, Cong Chen, Peng-Li He, Simon P. E. Blockley
Changbaishan volcano (China/North Korea) is one of the most active and hazardous volcanic centers in Northeast Asia. Despite decades of intensive research, the eruption history of this stratovolcano remains poorly constrained. One of the major puzzles is the timing of the eruption that produced the Tianwen Yellow Pumice (TYP) deposit at the caldera rim. Here we identify a new cryptotephra layer in
-
Insights Into the Structure of the Mongol-Okhotsk Suture Zone, Adaatsag Ophiolite, and Tectonic Boundaries of the Central Asian Orogenic Belt (Mongolia) From Electrical Resistivity Imaging and Seismic Velocity Models J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-23 Matthew J. Comeau, Rafael Rigaud, Erdenechimeg Batmagnai, Shoovdor Tserendug, Alexey Kuvshinov, Michael Becken, Sodnomsambuu Demberel
The Mongol-Okhotsk suture and the Adaatsag ophiolite belt are associated with the closure of the Mongol-Okhotsk paleo-ocean and are located within the Central Asian Orogenic Belt (CAOB) and Mongolia. The suture zone is flanked by volcanic-plutonic belts that host significant metallogenic zones, containing deposits of copper and gold. The tectonic evolution of this region is not fully understood and
-
Possible Eoarchean Records of the Geomagnetic Field Preserved in the Isua Supracrustal Belt, Southern West Greenland J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-24 Claire I. O. Nichols, Benjamin P. Weiss, Athena Eyster, Craig R. Martin, Adam C. Maloof, Nigel M. Kelly, Mike J. Zawaski, Stephen J. Mojzsis, E. Bruce Watson, Daniele J. Cherniak
Recovering ancient records of Earth's magnetic field is essential for determining the role of the magnetosphere in protecting early Earth from cosmic radiation and atmospheric escape. We present paleomagnetic field tests hinting that a record of Earth's 3.7-billion-year (Ga) old magnetic field may be preserved in the northeastern Isua Supracrustal Belt as a chemical remanent magnetization acquired
-
Evaluating the Rheological Controls on Topography Development During Craton Stabilization: Objective Approaches to Comparing Geodynamic Models J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-18 Kristina Kublik, Claire A. Currie, D. Graham Pearson
Surface topography is an important yet largely neglected aspect of the early evolution of cratons. The lateral accretion of cratonic nuclei inevitably forms orogenic belts that subsequently provide a sediment source for large, resource-rich intracratonic basins, but to date, geodynamic models have focused exclusively on lithospheric root processes. Here we use two-dimensional thermal-mechanical models
-
An Updated Fault Coupling Model Along Major Block-Bounding Faults on the Eastern and Northeastern Tibetan Plateau From a Stress-Constrained Inversion of GPS and InSAR Data J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-18 Dezheng Zhao, Chunyan Qu, Xinjian Shan, Wenyu Gong, Huihui Weng, Han Chen, Donglin Wu
Large block-bounding faults on the Tibetan plateau are significant geological structures that accommodate tectonic movements and accumulate stress, leading to large earthquakes. Quantifying the interseismic slip deficit rate helps to better assess the earthquake potential. We combine available InSAR (2015–2020) and interseismic GPS data to determine fault coupling along 14 major block-bounding faults
-
Monitoring Velocity Change Over 20 Years at Parkfield J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-18 Kurama Okubo, Brent G. Delbridge, Marine A. Denolle
We monitored the time history of the velocity change (dv/v) from 2002 to 2022 to investigate temporal changes in the physical state near the Parkfield Region of the San Andreas Fault throughout the interseismic period. Following the coseismic decrease in dv/v caused by the 2003 San Simeon (SS) and the 2004 Parkfield earthquakes, the dv/v heals logarithmically and shows a net long-term increase in which
-
Introduction to the Distributional Finite Difference Method for 3D Seismic Wave Propagation and Comparison With the Spectral Element Method J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-18 Chao Lyu, Yder Masson, Barbara Romanowicz, Liang Zhao
We have extended the distributional finite difference method (DFDM) to simulate the seismic-wave propagation in 3D regional earth models. DFDM shares similarities to the discontinuous finite element method on a global scale and to the finite difference method locally. Instead of using linear staggered finite-difference operators, we employ DFDM operators based on B-splines and a definition of derivatives
-
Importance of Water-Clay Interactions for Fault Slip in Clay-Rich Rocks J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-18 Markus Rast, Claudio Madonna, Paul A. Selvadurai, Quinn C. Wenning, Jonas B. Ruh
Clay-rich rocks are integral to subduction zone dynamics and of practical importance, for example, as barriers in nuclear waste and CO2 repositories. While the effects of swelling strain on the self-sealing capabilities of these rocks are relatively well-established, the implications of polar fluids interacting with charged clay particles on the frictional behavior, and the role of swelling stress
-
Laboratory Earthquake Ruptures Contained by Velocity Strengthening Fault Patches J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-17 Jun Young Song, Gregory C. McLaskey
Many natural faults are believed to consist of velocity weakening (VW) patches surrounded by velocity strengthening (VS) sections. Numerical studies routinely employ this framework to study earthquake sequences including repeating earthquakes. In this laboratory study, we made a VW asperity, of length L, from a bare Poly(methyl methacrylate) PMMA frictional interface and coated the surrounding interface
-
Role of Crack Interaction on Shear Localization in Porous Granular Rocks Deformed in the Brittle and Ductile Fields J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-17 Taka Kanaya, Greg Hirth
Crack interactions leading to shear localization were quantified using microstructural analysis for brittle faults and high-temperature ductile faults formed during experiments on quartz sandstone. In both faulting regimes, the nucleation of macroscopic faults results from the interactions of microfractures at two length scales in ensemble. Brittle faults nucleate when the longest mesoscale shear fractures
-
Ultra-Low Velocity Zones Beneath the Southern Hemisphere Imaged With Double-Array Stacking of PcP Waveforms J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-17 Kayode J. Agboola, Samantha E. Hansen, Edward J. Garnero, Sebastian Rost, Mingming Li, Sang-Heon Shim
Ultra-low velocity zones (ULVZs) are anomalous structures, generally associated with decreased seismic velocity and sometimes an increase in density, that have been detected in some locations atop the Earth's core-mantle boundary (CMB). A wide range of ULVZ characteristics have been reported by previous studies, leading to many questions regarding their origins. The lowermost mantle beneath Antarctica
-
Thermal and Physical Properties of Barrovian Metamorphic Sequence Rocks in the Ailao Shan-Red River Shear Zone, and Implications for Crustal Channel Flow J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-14 Lei Ji, Fulai Liu, Richard Palin, Fang Wang, Zaibo Sun
The collisional history between Greater India and the Eurasian plate has been well constrained by the study of exhumed Barrovian metamorphic sequence (BMS) rocks in the Himalayan Range. However, in the southeastern Tibetan Plateau, the collisional records have been obscured by intense, regional-scale strike-slip overprinting and recrystallization. Here, in BMS rocks from the Ailao Shan–Red River shear
-
Disagreements in Geodetically Inferred Strain Rates in the Western US With Stress Orientations and Geologic Moment Rates J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-15 Kaj M. Johnson
I employ an elasticity-based method to invert a geodetically derived surface velocity field in the western US using for present-day surface strain rate fields with uncertainties. The method uses distributed body forces in a thin elastic sheet and allows for discontinuities in velocity across creeping faults using the solution for dislocations in a thin elastic plate. I compare the strain rate fields
-
Salient Changes of Earth's Magnetic Field Toward the End of Cretaceous Normal Superchron (CNS) J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-15 Xinyu Liu, Yong-Xiang Li, Carl Richter
Changes in Earth's magnetic field during the Cretaceous Normal Superchron (CNS) spanning ∼121 Ma to ∼84 Ma hold important clues about the geodynamo evolution. Canonical models predict a persistently strong geomagnetic field with low variability during CNS, which, however, has not been observed in the available absolute paleointensity data and seafloor marine magnetic anomaly (MMA) records. The lack
-
The Architecture of a Root Zone of a Large Magmatic Conduit System From High Resolution Magnetic, Gravity and Petrophysical Data: The Reinfjord Ultramafic Complex J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-13 Z. Pastore, N. S. Church, C. Fichler, A. Michels, G. W. ter Maat, R. B. Larsen, S. A. McEnroe
The Seiland Igneous Province (SIP) is a large province of mafic and ultramafic (UM) complexes interpreted to be relics of a giant plumbing system feeding the Ediacaran Central Iapetus Magmatic Province. The Reinfjord Ultramafic Complex (RUC) is one of the four major ultramafic complexes of the SIP. The RUC has a younger dunite core surrounded by wehrlite and lherzolite embedded in country rocks consisting
-
Path and Slip Dependent Behavior of Shallow Subduction Shear Zones During Fluid Overpressure J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-13 Benjamin D. Belzer, Melodie E. French
Elevated pore fluid pressure is proposed to contribute to slow earthquakes along shallow subduction plate boundaries. However, the processes that create high fluid pressure, disequilibrium compaction and dehydration reactions, lead to different effective stress paths in fault rocks. These paths are predicted by granular mechanics frameworks to lead to different strengths and deformation modes, yet
-
Non-Double-Couple Components of Seismic Source: Method and Application to the 2014–2015 Bárðarbunga Volcanic Event Sequence, Iceland J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-11 Yanyan Xu, Lianxing Wen
Genuine non-double-couple (non-DC) components of a seismic source, defined here as the non-DC components that are not due to summation of pure double-couple (DC) components, provide important insight into special physical processes in non-earthquake sources such as explosion, volcano eruption and collapse etc. Yet they remain challenging to be resolved. To address the issue and explore the physical
-
Rock Anisotropy Promotes Hydraulic Fracture Containment at Depth J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-11 Guanyi Lu, Seyyedmaalek Momeni, Carlo Peruzzo, Fatima-Ezzahra Moukhtari, Brice Lecampion
We report laboratory experiments and numerical simulations demonstrating that the anisotropic characteristics of rocks play a major role in the elongation of hydraulic fractures (HFs) propagating in a plane perpendicular to the rocks' inherent layering (the bedding planes in sedimentary rocks and foliation planes in metamorphic rocks). Transverse anisotropy leads to larger HF extension in the para
-
CO2 Flushing Triggers Paroxysmal Eruptions at Open Conduit Basaltic Volcanoes J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-08 Luca Caricchi, Chiara P. Montagna, Alessandro Aiuppa, Joao Lages, Giancarlo Tamburello, Paolo Papale
Open conduit volcanoes erupt with the highest frequency on Earth. Their activity is characterized by an outgassing flux that largely exceeds the gas that could be released by the erupted magma; and by frequent small explosions intercalated by larger events that pose a significant risk to locals, tourists, and scientists. Thus, identifying the signs of an impending larger explosion is of utmost importance
-
High-Resolution Paleomagnetic Secular Variation Since ∼13 ka From a Loess Section in Northwest China and a Regional Geomagnetic Directional Model for East Asia J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-08 Yunchang Fan, Shuhui Cai, Francisco Javier Pavón-Carrasco, Jianguo Xiong, Chenglong Deng, Yongxin Pan
Paleomagnetic secular variation (PSV) records provide important information for the dynamic processes of the Earth's geomagnetic field, and also can be used for regional stratigraphic correlation. We conducted a paleomagnetic study on a high sedimentation rate Holocene loess section (the Minle section) with precise 14C age constraints in Northwest China. Rock magnetic results indicate that single domain
-
Dynamical Modeling of Fault Slip Rates at the New Zealand Plate Boundary Indicates Fault Weakness J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-08 H. Hirschberg, R. Sutherland
We construct a thin-sheet dynamical model of the New Zealand plate boundary that includes faults. Our model fits fault slip rates, style of distributed deformation, and is constrained by relative plate boundary motion. We assume a pseudo-plastic rheology and achieve a best fit to slip rate observations with a deviatoric stress magnitude of 20 MPa. Modeled local forces are significant at Puysegur and
-
Temporal Seismic Velocity Changes Associated With the Mw 6.1, May 2008 Ölfus Doublet, South Iceland: A Joint Interpretation From dv/v and GPS J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-08 Yeşim Çubuk-Sabuncu, Kristín Jónsdóttir, Thóra Árnadóttir, Aurélien Mordret, Corentin Caudron, Thomas Lecocq, Raphael De Plaen
In South Iceland, populated and agricultural areas are at risk of earthquakes due to their location within the South Iceland Seismic Zone (SISZ). In 2008, two moderate-sized earthquakes (M5.8 and M5.9) occurred in Ölfus, the western end of this highly active transform zone. We analyze temporal seismic velocity variations (dv/v) related to the Ölfus earthquake doublet, using cross-correlations of ambient
-
Source Parameters of Laboratory Acoustic Emission Events Estimated From the Coda of Waveforms J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-06 Tatiana I. Kartseva, Nikolai M. Shapiro, Andrey V. Patonin, Natalia M. Shikhova, Vladimir B. Smirnov, Alexander V. Ponomarev
We develop a method to estimate relative seismic moments M0 and corner frequencies fc of acoustic emission events recorded in laboratory experiments from amplitude spectra of signal's coda composed of reverberated and scattered waves. This approach has several advantages with respect to estimations from direct waves that are often clipped and also are difficult to separate in experiments performed
-
Banding in the Margins of Basaltic Dykes Indicates Pulsatory Propagation During Emplacement J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-04 C. Allgood, E. W. Llewellin, M. C. S. Humphreys, S. A. Mathias, R. J. Brown, C. Vye-Brown
Basaltic fissure eruptions, which are the most common type of eruption on Earth, are fed by dykes which mediate magma transport through the crust. Dyke propagation processes are important because they determine the geometry of the transport pathway and the nature of any geophysical signals associated with magma ascent. Here, we investigate small-scale (mm–cm wide) banding features at the margins of
-
Gas Seepage and Pockmark Formation From Subsurface Reservoirs: Insights From Table-Top Experiments J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-04 I. Vaknin, E. Aharonov, R. Holtzman, O. Katz
Pockmarks are morphological depressions commonly observed in ocean and lake floors. Pockmarks form by fluid (typically gas) seepage thorough a sealing sedimentary layer, deforming and breaching the layer. The seepage-induced sediment deformation mechanisms, and their links to the resulting pockmarks morphology, are not well understood. To bridge this gap, we conduct laboratory experiments in which
-
Detailed 3D Structures of the Western Edge of the Pacific Large Low Velocity Province J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-04 Jiewen Li, Baolong Zhang, Daoyuan Sun, Dongdong Tian, Jiayuan Yao
Large Low Velocity Provinces (LLVPs) are situated oppositely in the lowermost mantle beneath the Pacific Ocean and Africa. Deciphering the detailed seismic structures at the edge of LLVPs can provide key information on the composition and dynamics in the deep Earth. Here, we provide a detailed seismic image at the western edge of the Pacific LLVP by dense recordings. Differential travel time residuals
-
Experimental Insights Into Fault Reactivation and Stability of Carrara Marble Across the Brittle–Ductile Transition J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-03 Lu Niu, Yongsheng Zhou, Tongbin Shao, Lei Wang, Xiwei Xu, Erik Rybacki
Little is known about the impact of pressure (P) and temperature (T) on faulting behavior and the transition to fault locking under high P–T conditions. Using a Paterson gas-medium apparatus, triaxial compression experiments were conducted on Carrara marble (CM) samples containing a saw-cut interface at ∼40° to the vertical axis at a constant axial strain rate of ∼1 × 10−5 s−1, P = 30–150 MPa and T = 20–600°C
-
Dynamic Rupture Simulations of Caldera Collapse Earthquakes: Effects of Wave Radiation, Magma Viscosity, and Evidence of Complex Nucleation at Kı̄lauea 2018 J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-03 Taiyi A. Wang, Eric M. Dunham, Lukas Krenz, Lauren S. Abrahams, Paul Segall, Mark R. Yoder
All instrumented basaltic caldera collapses have generated Mw > 5 very long period earthquakes. However, previous studies of source dynamics have been limited to lumped models treating the caldera block as rigid, leaving open questions related to how ruptures initiate and propagate around the ring fault, and the seismic expressions of those dynamics. We present the first 3D numerical model capturing
-
Pn-Wave Receiver Function J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-01 Liangyu Zhang, Xiaobo Tian
The receiver function (RF) method is the most widely adopted method for imaging crustal structures using earthquake data. Through attenuation during long-distance propagation, high-frequency components are scarce in teleseismic waveforms, resulting in low-frequency RFs and low-resolution crustal images. The Pn-wave contains more high-frequency components because of the short epicentral distance. To
-
Pre-Eruptive Damage, Weakening and Magma-Edifice Coupling at Piton De La Fournaise Volcano J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-01 Jean-Luc Got, Aline Peltier, David Marsan, Valerie Ferrazzini, Elodie Brothelande, Aurore Carrier
Eruptions in basaltic volcanoes are often preceded by increasing seismicity and surface deformation, which progressively damage and weaken the volcanic edifice. We show how damage and crack interaction produce the inverse Omori-Utsu law for earthquakes during pre-eruptive periods. Rock mass continuity, representing damage, is shown to decrease exponentially with the earthquake number; we interpret
-
Effect of Melt on Polycrystal Anelasticity J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-04-01 Hatsuki Yamauchi, Yasuko Takei
This study provides the quantitative assessment of the effect of melt on the polycrystal anelasticity by grain boundary sliding, which is necessary to evaluate the effect of melt on seismic wave velocity and attenuation. We measured elasticity, anelasticity, and viscosity of rock analog samples by changing temperature continuously from subsolidus to supersolidus. Our previous studies have shown that
-
Hydrogen Diffusion in the Lower Mantle Revealed by Machine Learning Potentials J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-30 Yihang Peng, Jie Deng
Hydrogen may be incorporated into nominally anhydrous minerals including bridgmanite and post-perovskite as defects, making the Earth's deep mantle a potentially significant water reservoir. The diffusion of hydrogen and its contribution to the electrical conductivity in the lower mantle are rarely explored and remain largely unconstrained. Here we calculate hydrogen diffusivity in hydrous bridgmanite
-
Seismic Observation of a New ULVZ Beneath the Southern Pacific J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-29 Zhi Li, Carl Martin, Sanne Cottaar
We present new observations of core-diffracted shear waves which contain anomalous waveforms sampling the lowermost mantle beneath the southern Pacific region. Data in two distinct geometries, one from New Zealand to North America and the other from the Fiji and Solomon Islands to South America, show evidence of postcursor phases. The postcursor delays and move-outs imply that they are caused by an
-
The Lithosphere and Upper Mantle of the Western-Central Mediterranean Region From Integrated Geophysical-Geochemical Modeling J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-30 Wentao Zhang, Ivone Jiménez-Munt, Montserrat Torne, Jaume Vergés, Estefanía Bravo-Gutiérrez, Ana M. Negredo, Daniel García-Castellanos
This study integrates geophysical-geochemical data to investigate the thermochemical structure of the lithosphere and sublithospheric mantle, along the Southern Tyrrhenian Basin, Apennines, Adriatic Sea, Dinarides, and Carpathians-Balkanides. We present the lithospheric structure of the Adria microplate and the two opposing mantle slabs along its NE and SW margins. The modeling shows the presence of
-
Issue Information J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-27
No abstract is available for this article.
-
Machine Learning Analysis of Seismograms Reveals a Continuous Plumbing System Evolution Beneath the Klyuchevskoy Volcano in Kamchatka, Russia J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-25 René Steinmann, Léonard Seydoux, Cyril Journeau, Nikolai M. Shapiro, Michel Campillo
Volcanoes produce a variety of seismic signals and, therefore, continuous seismograms provide crucial information for monitoring the state of a volcano. According to their source mechanism and signal properties, seismo-volcanic signals can be categorized into distinct classes, which works particularly well for short transients. Applying classification approaches to long-duration continuous signals
-
Layered Mantle Flow Field Associated With Plate Kinematics and Slab Modulation Underneath the Horseshoe-Shaped Banda Arc-Islands J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-25 Sijia Li, Fansheng Kong, Kelly H. Liu, Stephen S. Gao
The Banda arc-continent collision zone signifies one of the most seismically active and tectonically intricate zones. The high convergence rate across the region, coupled with the exceptionally arcuate arc and subducted slab, makes it an ideal locale for investigating interactions between plate (slab) kinematics and plastic flow in the asthenosphere, which can be diagnosed by seismic anisotropy from
-
Kinetic and Thermodynamic Transition Pathways of Silica by Machine Learning: Implication for Meteorite Impacts J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-22 Xuyan Cao, Songsong Han, Junwei Li, Sheng-Cai Zhu, Qingyang Hu
Rocks falling to Earth from space may generate pressure and temperature approaching Earth's deep mantle, but such meteorite impact only persists for a very short period. Under these extreme conditions, kinetical factors largely control mineral phase transitions, in which the resultant phase may deviate from those at thermal equilibrium. Here, we focus on the phase transitions of silica during meteorite
-
Seismically Informed Reference Models Enhance AI-Based Earthquake Prediction Systems J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-22 Ying Zhang, Chengxiang Zhan, Qinghua Huang, Didier Sornette
Given the robust nonlinear regression capabilities of Artificial Intelligence (AI) technology, its commendable performance in numerous geophysical tasks is expected. Yet, AI technology suffers from (a) its “black box” nature and (b) the fact that some complicated artificial neural networks (ANNs) claiming superior performance do not surpass some simple geophysical models that clearly describe the underlying
-
Stable Chromium Isotope Fractionation During the Alteration of Abyssal Peridotite: Implications for Marine Chromium Isotope Mass Balance J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-22 Chunyang Liu, Li-Juan Xu, Haibo Ma, Sheng-Ao Liu, Ping-Ping Liu, Xiangli Wang, Shuning Li
The stable chromium isotope system has been widely used as a redox proxy to reconstruct the oxygenation history of ocean atmosphere systems. However, the Cr isotope mass balance in modern oceans (i.e., inputs and outputs) remains poorly constrained. To investigate the influence of seawater-peridotite reaction on the global marine Cr isotope mass balance, we report high-precision Cr isotope data (δ53Cr)
-
Informative Modes of Seismicity in Nearest-Neighbor Earthquake Proximities J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-21 Yu-Fang Hsu, Ilya Zaliapin, Yehuda Ben-Zion
We analyze nearest-neighbor proximities of earthquakes in California based on the joint distribution (T, R) of rescaled time T and rescaled distance R between pairs of earthquakes (Zaliapin & Ben-Zion, 2013a, https://doi.org/10.1002/jgrb.50179), using seismic catalogs from several regions and several catalogs for the San Jacinto Fault Zone (SJFZ). The study aims to identify informative modes in nearest-neighbor
-
P-Wave Velocities Across the α → β Quartz Transition at Lower Continental Crust Pressure and Temperature Conditions J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-21 Arefeh Moarefvand, Julien Gasc, Damien Deldicque, Loic Labrousse, Alexandre Schubnel
The quartz α → β transition is a displacive phase transition associated with a significant change in elastic properties. However, the elastic properties of quartz at high-pressure and temperature remain poorly constrained experimentally, particularly within the field of β-quartz. Here, we conducted an experimental study on the quartz α → β transition during which P-wave velocities were measured in-situ
-
Stress Balance in Synthetic Serpentinized Peridotites Deformed at Subduction Zone Pressures J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-20 N. Hilairet, J. Guignard, T. P. Ferrand, S. Merkel, P. Raterron, B. Ildefonse, A. Fadel, W. Crichton
Weak serpentine minerals affect the mechanical behavior of serpentinized peridotites at depth, and may play a significant role in deformation localization within subduction zones, at local or regional scale. Mixtures of olivine with 5, 10, 20 and 50 vol. % fraction of antigorite, proxies for serpentinized peridotites, were deformed in axial shortening geometry under high pressures (ca. 2–5 GPa) and
-
Induced Polarization of Clayey Rocks and Soils: Non-Linear Complex Conductivity Models J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-20 Youzheng Qi, Yuxin Wu
The past decades have witnessed the increased applications of induced polarization (IP) method in the critical zone studies with ubiquitous clay minerals. Although IP outperforms traditional electrical and electromagnetic methods through its unique ability to measure quadrature conductivity, the nonlinearity that quadrature conductivity behaves with salinities and frequencies greatly tortures IP practitioners
-
Rupture Dynamics of Cascading Earthquakes in a Multiscale Fracture Network J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-19 Kadek Hendrawan Palgunadi, Alice-Agnes Gabriel, Dmitry Igor Garagash, Thomas Ulrich, Paul Martin Mai
Fault-damage zones comprise multiscale fracture networks that may slip dynamically and interact with the main fault during earthquake rupture. Using 3D dynamic rupture simulations and scale-dependent fracture energy, we examine dynamic interactions of more than 800 intersecting multiscale fractures surrounding a listric fault, emulating a major listric fault and its damage zone. We investigate 10 distinct
-
Resonances of Fluid-Filled Cracks With Complex Geometry and Application to Very Long Period (VLP) Seismic Signals at Mayotte Submarine Volcano J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-19 Chao Liang, Junjun Peng, Jean-Paul Ampuero, Nathan Shauer, Kaoshan Dai
Fluid-filled cracks sustain a slow guided wave (Krauklis wave or crack wave) whose resonant frequencies are widely used for interpreting long period (LP) and very long period (VLP) seismic signals at active volcanoes. Significant efforts have been made to model this process using analytical developments along an infinite crack or numerical methods on simple crack geometries. In this work, we develop
-
Fluid-Induced Aseismic Slip May Explain the Non-Self-Similar Source Scaling of the Induced Earthquake Sequence Near the Dallas-Fort Worth Airport, Texas J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-18 SeongJu Jeong, Xinyu Tan, Semechah K. Y. Lui
Numerous studies have reported the occurrence of aseismic slip or slow slip events along faults induced by fluid injection. However, the underlying physical mechanism and its impact on induced seismicity remain unclear. In this study, we develop a numerical model that incorporates fluid injection on a fault governed by rate-and-state friction to simulate the coupled processes of pore-pressure diffusion
-
Kinematics of the Reykjanes Ridge: Influence of the Iceland Hotspot on Plate Boundary Evolution J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-18 Daniel Thorhallsson, Fernando Martinez, Richard Hey, Ármann Höskuldsson
The slow spreading Reykjanes Ridge overlies the Iceland hotspot and has undergone well ordered changes in crustal segmentation. Previous studies have attributed these changes to varying mantle plume thermal effects, rendering the lithosphere ductile or brittle. Here we use seafloor spreading magnetic anomalies to show that crustal accretion has been focused throughout its spreading history and to determine
-
Along-Strike Variations of Alaska Subduction Zone Structure and Hydration Determined From Amphibious Seismic Data J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-16 Zongshan Li, Douglas A. Wiens, Weisen Shen, Donna J. Shillington
We develop a 3-D isotropic shear velocity model for the Alaska subduction zone using data from seafloor and land-based seismographs to investigate along-strike variations in structure. By applying ambient noise and teleseismic Helmholtz tomography, we derive Rayleigh wave group and phase velocity dispersion maps, then invert them for shear velocity structure using a Bayesian Monte Carlo algorithm.
-
Modeled Flooding by Tsunamis and a Storm Versus Observed Extent of Coral Erratics on Anegada, British Virgin Islands—Further Evidence for a Great Caribbean Earthquake Six Centuries Ago J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-14 Yong Wei, Uri S. ten Brink, Brian F. Atwater
Models of near-field tsunamis and an extreme hurricane provide further evidence for a great precolonial earthquake along the Puerto Rico Trench. The models are benchmarked to brain-coral boulders and cobbles on Anegada, 125 km south of the trench. The models are screened by their success in flooding the mapped sites of these erratics, which were emplaced some six centuries ago. Among 25 tsunami scenarios
-
Broadband Love Wave Phase Velocity Maps Based on Modified Double-Beamforming of Ambient Noise Cross-Correlations J. Geophys. Res. Solid Earth (IF 3.9) Pub Date : 2024-03-14 Kaifeng Zhao, Yingjie Yang, Yinhe Luo
Ambient noise tomography has become a popular method in the past two decades to image the crust and uppermost mantle structure. To date, broadband Rayleigh wave signals can be obtained from ambient noise, which can be utilized to study the earth's interior structure from the surface down to ∼200–300 km depths. However, it is hard to extract intermediate- and long-period (>50 s) Love wave signals from