样式: 排序: IF: - GO 导出 标记为已读
-
Magmatic underplating, plumbing system, and carbon-enhanced electrical conductivity in the Paraná Magmatic Province Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-31 Gabriel Negrucci Dragone, Mauricio de Souza Bologna
-
Large variations in the lithospheric thickness of northwestern India: Imprints of collisional and thermal reworking Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-30 Niraj Kumar, Om Prakash, V.M. Tiwari, A.P. Singh
-
Remagnetization of magnetite-bearing rocks in the Eastern Qiangtang Terrane, Tibetan Plateau (China): Mechanism and diagnosis Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-27 Qiang Fu, Maodu Yan, Mark J. Dekkers, Chong Guan, Liang Yu, Wanlong Xu, Zunbo Xu, Miaomiao Shen, Bingshuai Li
Remagnetization is a common yet notorious phenomenon that interferes with paleogeographic reconstruction. Classical paleomagnetic field tests are helpful in detecting remagnetization but their diagnostic power is limited: remagnetization may occur before folding, the tilting age may be ambiguous, or protracted remagnetization may yield dual polarities. Rock magnetic information can provide other constraints
-
Constraining seismic anisotropy on the mantle transition zone boundaries beneath the subducting Nazca slab Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-22 Zhu Zhang, Wen-Che Yu, Hsin-Hua Huang
-
Deciphering the crustal anisotropy and mantle flow beneath the Indo-Burma ranges from the harmonic decomposition of the receiver functions Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-19 Hitank Kasaundhan, Dhiraj Kumar Singh, Mohit Agrawal
-
Data-driven identification of earthquake clusters: Clusters before the 2010 El mayor-Cucapah earthquake MW 7.1, Baja California, Mexico Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-19 F. Alejandro Nava, Lenin Ávila-Barrientos
-
Adjoint inversion of antipodal PKPab waveforms for P wave velocity anomaly at the base of the lower mantle Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-19 Seiji Tsuboi, Rhett Butler
-
Post-collisional lithospheric delamination in eastern Iran, revealed by non-linear teleseismic tomography and residual topography Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-19 Meysam Mahmoodabadi, Farzam Yamini-Fard, Mohammad Tatar, Ahmad Rashidi
-
Lateral and radial viscosity structure beneath Fennoscandia inferred from seismic and magnetotelluric observations Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-18 Florence D.C. Ramirez, Kate Selway, Clinton P. Conrad, Valerie Maupin, Maxim Smirnov
-
Effects of Fe-Ca-Mg substitutions on the equation-of-state of pyrope-rich garnet from ab initio modeling and experiments: Insights and implications for the upper mantle Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-18 Maribel Núñez-Valdez, Niccolò Satta, Sergio Speziale
-
Detailed seismic structure beneath the earthquake zone of Yogyakarta 2006 (Mw ∼6.4), Indonesia, from local earthquake tomography Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-13 Virga Librian, Mohamad Ramdhan, Andri Dian Nugraha, Muhammad Maruf Mukti, Syuhada Syuhada, Birger-Gottfried Lühr, Sri Widiyantoro, Adityo Mursitantyo, Ade Anggraini, Zulfakriza Zulfakriza, Faiz Muttaqy, Yayan Mi'rojul Husni
-
Tectonic development in Singhbhum Craton, NE India decrypted from dyke swarms: A window to understand magma dynamics in Archean-Proterozoic supercontinents Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-13 Arun K. Ojha, D.P. Monika Saini, Amar Agarwal, Ambrish K. Pandey
-
Influence of planetary rotation on metal-silicate mixing and equilibration in a magma ocean Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-12 Quentin Kriaa, Michael Le Bars, Maylis Landeau
At a late stage of its accretion, the Earth experienced high-energy planetary impacts. Following each collision, the metal core of the impactor sank into molten silicate magma oceans. The efficiency of chemical equilibration between these silicates and the metal core controlled the composition of the Earth interior and left a signature on geochemical and isotopic data. These data constrain the timing
-
Elastic wave velocity measurements of sodium aluminosilicate glass and melt at high pressure and temperature Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-07 Naoki Takahashi, Tatsuya Sakamaki, Osamu Ikeda, Sho Kakizawa, Yuji Higo, Akio Suzuki
-
The onset of anelastic behavior in fine-grained synthetic dunite Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-01 Tongzhang Qu, Ian Jackson, Ulrich H. Faul, Emmanuel C. David
-
Spherical geometry convection in a fluid with an Arrhenius thermal viscosity dependence: The impact of core size and surface temperature on the scaling of stagnant-lid thickness and internal temperature Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-01 Pejvak Javaheri, Julian P. Lowman, Paul J. Tackley
The rock and rock-ice mixtures of the core-enveloping spherical shells comprising terrestrial body interiors have thermally determined viscosities well described by an Arrhenius dependence. Accordingly, the implied viscosity contrasts determined from the activation energies (E) characterizing such bodies can reach values exceeding , for a temperature range that spans the conditions found from the lower
-
The effect of rotatability of measuring directions design on the precision of the determination of the anisotropy of magnetic susceptibility: Mathematical model study Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-03-01 František Hrouda, Josef Ježek, Martin Chadima
The precision of the measurement of the anisotropy of magnetic susceptibility (AMS) depends, in addition to other factors like accuracy of measurement of directional susceptibility and number of measuring directions, also on the orientation of the measuring design with respect to the specimen's anisotropy. The last factor can be characterized by rotatability coefficient of the measuring design. We
-
Three-dimensional magnetotelluric modeling with nontrivial anisotropy by a regularization approach Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-02-24 Zeqiu Guo, Hao Dong, Keke Zhang
The regularization approach has been successfully applied to remove spurious solutions in the magnetotelluric (MT) forward problems of isotropic Earth media. However, spurious modes are more likely to occur in numerical solutions of anisotropic media, as electrical anisotropy introduces many more complications to electromagnetic (EM) induction in such media. This study focuses on developing the regularization
-
Numerical modelling of the 1996 Chimbote-Peru tsunami earthquake (Mw 7.5) Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-02-15 Cesar Jimenez, Yuchen Wang
The earthquake of Chimbote occurred on February 21, 1996 in the northern region of Peru. Despite its relatively small magnitude, it generated a tsunami of 2–3 m height in Chimbote, taking the lives of 12 people. We conducted the signal processing of 31 broadband teleseismic stations, and waveform inversion to obtain the slip distribution and source time function, which indicated a multiple rupture
-
Influence of water on the thermoelastic properties of Fe bearing ringwoodite: A first-principles study Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-02-13 Rabindranath Mondal, Gaurav Shukla, Swastika Chatterjee
Using first-principles density functional theory (DFT), we model the thermoelastic properties of hydrated ringwoodite (γ-(Fe, Mg)SiO), a potential water reservoir in the Earth's mantle transition zone (MTZ). Our calculations indicate that hydration, in general, leads to a reduction in the sound wave velocity of ringwoodite. However, increased pressure tends to suppress this reduction. For our 1.56
-
Complexity of the 2016 M 7.8 Kaikōura, New Zealand, earthquake from seismic observation: Inferences of overpressured fluid involvement Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-02-09 Tomomi Okada, Miu Matsuno, Satoshi Matsumoto, Yuta Kawamura, Yoshihisa Iio, Tadashi Sato, Ayaka Tagami, Satoshi Hirahara, Shuutoku Kimura, Stephen Bannister, John Ristau, Martha K. Savage, Clifford H. Thurber, Richard H. Sibson
The M 7.8 Kaikoura earthquake occurred in the northern South Island of New Zealand on 3 Nov., 2016, involving the rupture of >20 faults. To understand the complexity of the Kaikoura earthquake, details of the fault geometry, seismic velocity distribution, and stress field are necessary. We have undertaken seismic tomography along the c. 200 km length of the rupture zone. Data from both 51 temporary
-
Southeastward extrusion of the Tibetan Plateau limited by the strong Emeishan large igneous province from earthquake surface wave tomography Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-02-08 Yuanyuan V. Fu, Lun Li, Junwei Ma, Nannan Sun
Active deformation is ongoing in the southeastern margin of the Tibetan Plateau due to the collision of the Indian and Eurasian continents. While large-scale motion of the surface occurs, the nature of deformation at depth remains unresolved. We construct new lithospheric seismic anisotropic (radially and azimuthally) and shear-wave velocity models using fundamental-mode Rayleigh- and Love-wave phase
-
-
Changes in thermomagnetic and X-ray diffraction properties of Asby dolerite with distance from the Lockne impact structure, Sweden Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-01-30 Pradyut Phukon, Amar Agarwal, Bruno Daniel Leite Mendes, Agnes Kontny, Gaurav Joshi
-
Constraining Earth's mantle rheology with Love and Shida numbers at the M2 tidal frequency Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-01-22 Dargilan Oliveira Amorim, Tamara Gudkova
We use measurements of Earth's tidal response at the M2 frequency to constrain the rheology of its mantle. The viscoelasticity and anelasticity of the planet are modeled with an Andrade rheology that depends on two parameters: α and ζ. In this paper, we propose an improved algorithm to compute Earth's tidal deformation. Its Love and Shida numbers k2, h2, k3 and l2 as well as the tidal lag ϵ were calculated
-
Reversal of drift direction during the Laschamp geomagnetic excursion Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2024-01-07 Nicole Clizzie, Catherine Constable
Earth's magnetic field changes in both space and time: the temporal changes are called geomagnetic and paleomagnetic secular variations. Westward drift has been noted as a feature of secular variation for several centuries, but eastward drift has received less attention. We use three global geomagnetic field models covering the past 100 kyr to extend temporal coverage for tracking the zonal (azimuthal)
-
-
Robust estimates of the ratio between S- and P-wave velocity anomalies in the Earth's mantle using normal modes Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-12-28 Federica Restelli, Christophe Zaroli, Paula Koelemeijer
Seismic tomography allows us to image the interior of the Earth. In general, to determine the nature of seismic anomalies, constraints on more than one seismic parameter are required. For example, the ratio R between perturbations in vs and vp (dlnvs and dlnvp, respectively) is studied extensively in the lowermost mantle and interpreted in terms of thermal and/or chemical anomalies. However, to jointly
-
Fluid-assisted intra-plate seismicity at the edge of the Gawler Craton, South Australia Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-12-12 Shubham Agrawal, Caroline M. Eakin, John P. O'Donnell
-
High-pressure single-crystal elasticity of corundum: Implication for multiple seismic structure of 660-km discontinuity Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-12-10 Xinyue Zhang, Wei Wei, Luo Li, Yingxin Yu, Zhu Mao
-
Dislocations in naturally deformed olivine: Example of a mylonitic peridotite Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-12-07 Sylvie Demouchy, Alexandre Mussi, Timmo Weidner, Emmanuel Gardés, Patrick Cordier
-
Crustal deformation and thickness variation from Zagros to Alborz in Iran: New insights from H-κ-c method Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-11-26 Mohsen Azqandi, Mohammad Reza Abbassi, Meysam Mahmoodabadi, Esmaeil Shabanian, Ahmad Sadidkhouy
-
Partial melt composition of enstatite chondritic mantle around the rheological transition at 23 GPa: Implications for the chemical differentiation of the Earth's mantle Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-11-22 Hideharu Kuwahara
-
Recognition of the causative fault of the 2017 MW 4.9 Malard (Tehran, Iran) earthquake from directivity analysis of the recorded ground motions Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-27 Saeid Naserieh, Mehrdad Pakzad, Hadi Ghofrani, Mohsen Dezvareh, Ehsan Karkooti, Ali Moradi, Mohammad Shahvar
-
Source rupture process of the March 18th, 2021, Mw6.0 Béjaia (Algeria) earthquake associated with the Western segment – A link with the August 1856 Djidjelli earthquakes (Io = VIII-IX, M ≥ 6) Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-26 Amar Benfedda, Khadidja Abbes, Abdelhakim Ayadi, Said Maouche, Youcef Bouhadad, Mohamed Salah Boughacha, Mourad Bezzeghoud
-
Multiple segmentation and seismogenic evolution of the 6th February 2023 (Mw 7.8 and 7.7) consecutive earthquake ruptures and aftershock deformation in the Maras triple junction region of SE-Anatolia, Turkey Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-21 Mustafa Toker, Evrim Yavuz, Murat Utkucu, Fatih Uzunca
-
Reappraisal of the 1926, Jersey earthquake source parameters Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-18 D. Baumont, D. Amorèse, J. Benjumea, F. Ego, J.-P. Tardivel, P. Arroucau
-
Mapping of stress and structure controlled upper crustal anisotropy in Kumaon-Gharwal Himalaya Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-17 V. Pavan Kumar, D. Srinagesh, Prantik Mandal, Jyotima Kanaujia, B. Naresh, P. Solomon Raju
-
Thermal convection and dynamo action with stable stratification at the top of the Earth's outer core Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-12 Priyabrata Mukherjee, Swarandeep Sahoo
The outer core of the Earth, filled with electrically conducting fluid, undergoes thermochemical convection due to super-adiabatic temperature gradients. Near the core-mantle boundary, fluid flow may be restricted due to sub-adiabatic temperature gradients or accumulated light elements forming a layer of stable stratification. The present study investigates the behavior of thermal convection with various
-
Earthquake location based on Distributed Acoustic Sensing (DAS) as a seismic array Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-04 K. Lentas, D. Bowden, N.S. Melis, A. Fichtner, M. Koroni, K. Smolinski, A. Bogris, T. Nikas, C. Simos, I. Simos
-
Shear wave velocity structure of the upper crust in north Xiaojiang fault zone in SE Tibet via short-period ambient noise dense seismic array Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-10-02 Si Chen, Rui Gao, Zhanwu Lu, Yao Liang, Wei Cai, Lifu Cao, Zilong Chen, Guangwen Wang
-
Effects of scattering parameters on seismic observables of PKP precursors and apparent D″ reflections – A parameter study Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-28 Vanessa Hiemer, Christine Thomas
The lowermost mantle has been studied with a variety of seismic waves which show that different structures on many length-scales exist there but it is possible that several seismic phases could be generated by one structure. Specifically, we use a randomly distributed scattering layer that is able to generate precursors to the core phase PKPdf as well as waves that resemble reflections off the D″ layer
-
Crustal structure and isostatic compensation beneath the South China Sea using satellite gravity data and its implications for the rifting and magmatic activities Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-26 A.V. Satyakumar, Shuanggen Jin, Virendra M. Tiwari, Songbai Xuan
-
Horizontal length of finite-amplitude thermal convection cells with temperature-dependent viscosity Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-25 Hisashi Okuda, Shin-ichi Takehiro
-
The role of magnetic waves in tangent cylinder convection Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-20 Debarshi Majumder, Binod Sreenivasan
The secular variation of the geomagnetic field suggests that there are anticyclonic polar vortices in the Earth's core. Under the influence of a magnetic field, the polar azimuthal flow is thought to be produced by one or more coherent upwellings within the tangent cylinder, offset from the rotation axis. In this study, convection within the tangent cylinder in rapidly rotating dynamos is investigated
-
Regional outer core kinematics from the time dependence of intense geomagnetic flux patches Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-22 Filipe Terra-Nova, Ingo Wardinski
Observations of the geomagnetic field by surface observatories and dedicated satellite missions such as the Swarm constellation provide constraints on the dynamics in Earth's outer core. In particular, global core flow models estimated by inversion of the radial magnetic induction equation provide an image of the circulation of the electrically conductive fluid at the top of the core. However, in these
-
Wave-like motions and torques in Earth's core as inferred from geomagnetic data: A synthetic study Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-21 T. Schwaiger, N. Gillet, D. Jault, M. Istas, M. Mandea
Here, we present a synthetic validation for the inversion of transient fluid motions at the surface of Earth's core. It is based on a numerical simulation of the geodynamo in which the main time-scales (based on rotation, magnetic field and velocity) are sufficiently separated to give rise to a variety of hydro-magnetic waves. We focus the study on wave-like motions with periods commensurate to the
-
NZPSV11k.2023 and NZPSV1k.2023: Holocene palaeomagnetic secular variation master records for New Zealand Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-09 Gillian M. Turner, Ruth M. Corkill
-
The effect of in-situ metasomatism on the electrical resistivity of the lower crust Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-29 S. Jennings, D. Hasterok, M. Hand, K. Bhowany
-
PREM-like velocity structure in the outermost core from global SKS and ScS waveform modeling Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-09-01 Xin Zhang, Lianxing Wen
Seismic structure in the Earth's outermost core is important for our understanding of thermochemical stratification in the outer core, and is yet heavily debated. Here we study the compressional velocity structure in the Earth's outermost core based on waveform modeling of a unique untapped SKS and ScS dataset near bifurcation distances, collected from global seismic arrays for earthquakes occurring
-
A grand spectrum of the geomagnetic field Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-28 Catherine Constable, Steven Constable
The spectrum of geomagnetic variations is broad and reflects multiple internal and external physical Earth processes. The geodynamo generates an internal magnetic field, dominated by the low frequency contribution of the axial dipole whose temporal variations range from geomagnetic reversals, excursions, and large-scale paleosecular variations, down to decadal and sub-annual changes. Variations in
-
Magnetotelluric imaging reveals fragmented crustal blocks beneath the Konkan plains adjoining the Western Ghats, Deccan Volcanic Province, India Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-22 N.N. Chakravarthi, G. Pavankumar, A. Manglik
The Deccan plateau and the Konkan plain of the western continental margin of India are significant morphotectonic features. Seismic activity along with regional-scale geophysical and geological studies suggests that the plateau is tectonically disturbed and the traps together with the sub-basaltic terrain have been experiencing structural deformation along pre-existing linear zones. The recent Palghar
-
Full vector paleomagnetic estimation from the Paraná-Etendeka Large Igneous Province, southern Brazil: Implications on the onset of Cretaceous Normal Superchron Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-19 Luis M. Alva-Valdivia, Jairo F. Savian, Camila R. Tomé, Arnaldo Hernández-Cardona, Caroline D.K. Tolotti, Marcia E.B. Gomes, J. Antonio González-Rangel
-
Small-scale heterogeneities in the convective upper mantle beneath circum-Pacific subduction zones: Evidence for fragments of recycled basaltic crust Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-13 Satoshi Kaneshima
-
-
Investigation of the porosity of L/LL4 ordinary chondrite Bjurböle using synchrotron radiation microtomography and scanning electron microscopy: Implications for parent body evolution Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-09 A.-J. Soini, I.T. Kukkonen, H. Suhonen, B. Lukić, T. Kohout, A.V. Luttinen
-
Equation of state for Mg3Al2Si3O12 pyrope: Implications for post-garnet transitions and mantle dynamics Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-09 Anna M. Dymshits, Peter I. Dorogokupets, Igor S. Sharygin, Anton F. Shatskiy
-
The upper crustal shear wave structure of the Zagros collision zone from local earthquake Rayleigh wave tomography Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-09 Shaghayegh VahidRavesh, Taghi Shirzad, Farzam Yaminifard, Mohsen Kazemnia, Simone Pilia, Mojtaba Naghavi, Habib Rahimi
-
Liquid core dynamical stability and the Earth's rotational modes Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-08-02 Behnam Seyed-Mahmoud
The Earth's interior, especially the mantle (MT), is believed to deviate from the state of hydrostatic equilibrium. This is mainly because the customary approaches in computing the period of the free-core nutation (FCN) for Earth models in hydrostatic equilibrium yield predicted values larger than the observed value by an average of about 30 sidereal days (sd). However, results from alternative computational
-
Anisotropy of magnetic susceptibility impressed during rock magnetic procedures (AF, IRM) and information on the domain state of the magnetic carriers Phys. Earth Planet. Inter. (IF 2.3) Pub Date : 2023-07-23 Pierrick Roperch, Catherine Kissel, France Lagroix, Guillaume Dupont-Nivet, Annick Chauvin, Fernando Poblete, Jovid Aminov