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1. Geomagnetism

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  1. We report paleomagnetic records of Matuyama–Brunhes geomagnetic polarity reversal and associated key tephra layers from the Early–Middle Pleistocene marine sedimentary succession in the Boso Peninsula. The out...

    Authors: Hirokuni Oda, Hiroomi Nakazato, Futoshi Nanayama and Yumiko Harigane
    Citation: Earth, Planets and Space 2022 74:80
    Content type: Full paper Published on:

  3. Periodic tidal ocean currents induce electric currents and, therefore, magnetic field signals that are observable using spaceborne and ground-based observation techniques. In theory, the signals can be used to...

    Authors: Johannes Petereit, Jan Saynisch-Wagner, Achim Morschhauser, Leonie Pick and Maik Thomas
    Citation: Earth, Planets and Space 2022 74:67
    Content type: Full paper Published on:

  5. The World Magnetic Model (WMM) is a geomagnetic main field model that is widely used for navigation by governments, industry and the general public. In recent years, the model has been derived using high accur...

    Authors: Samuel Califf, Patrick Alken, Arnaud Chulliat, Brian Anderson, Kenneth Rock, Sarah Vines, Robin Barnes and Kan Liou
    Citation: Earth, Planets and Space 2022 74:37
    Content type: Full paper Published on:

  6. Geomagnetism, similar to other areas of geophysics, is an observation-based science. Data agreement between comparative geomagnetic vector observations is one of the most important evaluation criteria for high...

    Authors: Zhaobo He, Xingxing Hu, Yuntian Teng, Xiuxia Zhang and Xiaoyu Shen
    Citation: Earth, Planets and Space 2022 74:29
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  8. A regional harmonic spline geomagnetic main field model, Southern Africa Core Field Model (SACFM-3), is derived from Swarm satellite and ground-based data for the southern African region, in the eastern part o...

    Authors: Emmanuel Nahayo and Monika Korte
    Citation: Earth, Planets and Space 2022 74:8
    Content type: Full paper Published on:

  9. High-quality data are vital to the research field of paleointensity, which has long suffered from poor-quality and/or sparse data. Previous paleointensity work has established that repeatedly heating specimens...

    Authors: J. Michael Grappone, James M. Russell and Andrew J. Biggin
    Citation: Earth, Planets and Space 2021 73:235
    Content type: Full paper Published on:

  10. Satellite-measured tidal magnetic signals are of growing importance. These fields are mainly used to infer Earth’s mantle conductivity, but also to derive changes in the oceanic heat content. We present a new ...

    Authors: Jan Saynisch-Wagner, Julien Baerenzung, Aaron Hornschild, Christopher Irrgang and Maik Thomas
    Citation: Earth, Planets and Space 2021 73:234
    Content type: Full paper Published on:

  11. Estimation of the traditional transverse electric (TE) and transverse magnetic (TM) impedances of the magnetotelluric tensor for two-dimensional structures can be decoupled from the estimation of the strike di...

    Authors: Rocío F. Arellano-Castro and Enrique Gómez-Treviño
    Citation: Earth, Planets and Space 2021 73:203
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  12. We describe the way a global model of the geomagnetic field has been built using vector field data acquired by the absolute scalar magnetometers (ASM) running in vector mode on board the Alpha and Bravo satell...

    Authors: Pierre Vigneron, Gauthier Hulot, Jean-Michel Léger and Thomas Jager
    Citation: Earth, Planets and Space 2021 73:197
    Content type: Express Letter Published on:

  13. Each International Geomagnetic Reference Field (IGRF) model released under the auspices of the International Association of Geomagnetism and Aeronomy comprises a secular variation component that describes the ...

    Authors: Alexandre Fournier, Julien Aubert, Vincent Lesur and Erwan Thébault
    Citation: Earth, Planets and Space 2021 73:190
    Content type: Frontier Letter Published on:

  14. Pliocene volcanic rocks from south-east Austria were paleomagnetically investigated. Samples were taken from 28 sites located on eight different volcanoes. Rock magnetic investigations revealed that magnetic c...

    Authors: Elisabeth Schnepp, Patrick Arneitz, Morgan Ganerød, Robert Scholger, Ingomar Fritz, Ramon Egli and Roman Leonhardt
    Citation: Earth, Planets and Space 2021 73:182
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  15. Following the observed pattern of a new geomagnetic jerk every 3–4 years, certain predictions suggested that a new event should occur around 2020 after the one observed around 2017.5. In this work, we explore ...

    Authors: F. Javier Pavón-Carrasco, Santiago Marsal, Saioa A. Campuzano and J. Miquel Torta
    Citation: Earth, Planets and Space 2021 73:175
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  16. Reconstructing the history of Philippine Sea (PHS) plate motion is important for better understanding of the tectonics of the surrounding plates. It is generally considered that the PHS plate migrated northwar...

    Authors: Toshitsugu Yamazaki, Shun Chiyonobu, Osamu Ishizuka, Fumisato Tajima, Naoki Uto and Shinichi Takagawa
    Citation: Earth, Planets and Space 2021 73:161
    Content type: Express Letter Published on:

  17. The visualization of computer simulations is currently undergoing a transition from post-hoc to in-situ visualization in which visualization processes are applied, while the simulation is running. The selectio...

    Authors: Nobuaki Ohno and Akira Kageyama
    Citation: Earth, Planets and Space 2021 73:158
    Content type: Technical report Published on:

  18. We conducted magnetotelluric measurements to investigate a large serpentinite complex in the northern Kamuikotan Zone that intruded a Cretaceous–Paleocene forearc sedimentary sequence. The resistivity model we...

    Authors: Hiroshi Ichihara, Toru Mogi, Toshihiro Uchida, Hideyuki Satoh, Yusuke Yamaya, Masakazu Fujii, Shusaku Yamazaki, Kenji Okazaki and Noriko Tada
    Citation: Earth, Planets and Space 2021 73:154
    Content type: Express Letter Published on:

  19. Thellier-type paleointensity experiments associated with partial thermal remanent magnetization checks have been widely used to determine paleointensity values from volcanic and archaeological media. However, ...

    Authors: Doohee Jeong, Qingsong Liu, Yuhji Yamamoto, Yongjae Yu, Xiang Zhao and Huafeng Qin
    Citation: Earth, Planets and Space 2021 73:144
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  20. The electromagnetic (EM) field variations capable of probing the electrical conductivity of the upper mantle and mantle transition zone have a period range between a few hours and 1 day. At these periods, the ...

    Authors: Géraldine Zenhäusern, Alexey Kuvshinov, Martina Guzavina and Astrid Maute
    Citation: Earth, Planets and Space 2021 73:136
    Content type: Full paper Published on:

  21. To construct the Mesozoic apparent polar wander path (APWP) for the inner arc of the southwestern Japanese islands (referred to as southwest Japan) and compare it to that of East Asia, a 110 Ma paleomagnetic p...

    Authors: Koji Uno, Yuta Idehara, Daichi Morita and Kuniyuki Furukawa
    Citation: Earth, Planets and Space 2021 73:132
    Content type: Full paper Published on:

  22. In this paper, numerical computations are carried out to investigate the seismo-electromagnetic signals arising from the motional induction effect due to an earthquake source embedded in 3-D multi-layered medi...

    Authors: Hengxin Ren, Ling Zeng, Yao-Chong Sun, Ken’ichi Yamazaki, Qinghua Huang and Xiaofei Chen
    Citation: Earth, Planets and Space 2021 73:130
    Content type: Full paper Published on:

  23. As a basis for the electrical tomography of laboratory-scale rock samples (~ 10 cm), we developed a procedure for stable, multi-point, electrical measurement on rock samples that is effective even at high cont...

    Authors: Takeshi Suzuki, Ryokei Yoshimura, Ken’ichi Yamazaki and Naoto Oshiman
    Citation: Earth, Planets and Space 2021 73:123
    Content type: Technical report Published on:

  24. The stray current of direct current (DC) railway systems causes magnetic disturbance in geomagnetic measurements, which may complicate the identification of useful information. The magnetic disturbance exhibit...

    Authors: Xuezhen Ding, Yuguo Li, Yunju Wu, Shuangmin Duan, Zhuoxuan Li, Yanxin Yin and Lindong Pan
    Citation: Earth, Planets and Space 2021 73:107
    Content type: Full paper Published on:

  26. Crustal architecture strongly influences the development and emplacement of mineral zones. In this study, we image the crustal structure beneath a metallogenic belt and its surroundings in the Bayankhongor are...

    Authors: Matthew J. Comeau, Michael Becken, Alexey V. Kuvshinov and Sodnomsambuu Demberel
    Citation: Earth, Planets and Space 2021 73:82
    Content type: Full paper Published on:

  27. Speleothems are ideal archives of environmental magnetism and paleomagnetism, since they retain continuous magnetic signals in stable conditions and can be used for reliable radiometric dating using U-series a...

    Authors: Naoto Fukuyo, Hirokuni Oda, Yusuke Yokoyama, Geoffrey Clark and Yuhji Yamamoto
    Citation: Earth, Planets and Space 2021 73:77
    Content type: Express Letter Published on:

  28. Magnetotelluric (MT) data processing can increase the reliability of measured data. Traditional MT data denoising methods are usually applied to entire MT time-series, which results in the loss of useful MT si...

    Authors: Xian Zhang, Jin Li, Diquan Li, Yong Li, Bei Liu and Yanfang Hu
    Citation: Earth, Planets and Space 2021 73:76
    Content type: Full paper Published on:

  29. We use 20 years of continuous magnetic field measurements from the Ørsted, CHAMP and Swarm satellite missions, supplemented by calibrated platform magnetometer data from the CryoSat-2 satellite, to study time var...

    Authors: Magnus D. Hammer, Christopher C. Finlay and Nils Olsen
    Citation: Earth, Planets and Space 2021 73:73
    Content type: Full paper Published on:

  30. This study presents results of mapping three-dimensional (3-D) variations of the electrical conductivity in depths ranging from 400 to 1200 km using 6 years of magnetic data from the Swarm and CryoSat-2 satellite...

    Authors: Alexey Kuvshinov, Alexander Grayver, Lars Tøffner-Clausen and Nils Olsen
    Citation: Earth, Planets and Space 2021 73:67
    Content type: Full paper Published on:

    The Correction to this article has been published in Earth, Planets and Space 2021 73:94

  31. This paper describes and discusses the preprocessing and calibration of the magnetic data taken by the navigational magnetometers onboard the two GRACE satellites, with focus on the almost 10 years period from...

    Authors: Nils Olsen
    Citation: Earth, Planets and Space 2021 73:62
    Content type: Full paper Published on:

  32. In the present work, we evaluate the accuracy of the Solar Quiet Reference Field (SQRF) model for estimating and predicting the geomagnetic solar quiet (Sq) daily field variation in the South America Magnetic ...

    Authors: Sony Su Chen, Clezio Marcos Denardini, Láysa Cristina Araujo Resende, Ronan Arraes Jardim Chagas, Juliano Moro, Régia Pereira da Silva, Carolina de Sousa do Carmo and Giorgio Arlan da Silva Picanço
    Citation: Earth, Planets and Space 2021 73:61
    Content type: Full paper Published on:

  33. We present geomagnetic main field and secular variation time series, at 300 equal-area distributed locations and at 490 km altitude, derived from magnetic field measurements collected by the three Swarm satellite...

    Authors: Magnus D. Hammer, Grace A. Cox, William J. Brown, Ciarán D. Beggan and Christopher C. Finlay
    Citation: Earth, Planets and Space 2021 73:54
    Content type: Full paper Published on:

  34. The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission carries magnetometers that are dedicated to enhance the satellite’s navigation. After appropriate calibration and characterisation of ar...

    Authors: C. Stolle, I. Michaelis, C. Xiong, M. Rother, Th. Usbeck, Y. Yamazaki, J. Rauberg and K. Styp-Rekowski
    Citation: Earth, Planets and Space 2021 73:51
    Content type: Full paper Published on:

  36. In December 2019, the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group (V-MOD) adopted the thirteenth generation of the International Geomagnetic Reference Field (IGRF). T...

    Authors: P. Alken, E. Thébault, C. D. Beggan, H. Amit, J. Aubert, J. Baerenzung, T. N. Bondar, W. J. Brown, S. Califf, A. Chambodut, A. Chulliat, G. A. Cox, C. C. Finlay, A. Fournier, N. Gillet, A. Grayver…
    Citation: Earth, Planets and Space 2021 73:49
    Content type: Full paper Published on:

  37. In December 2019, the 13th revision of the International Geomagnetic Reference Field (IGRF) was released by the International Association of Geomagnetism and Aeronomy (IAGA) Division V Working Group V-MOD. Thi...

    Authors: P. Alken, E. Thébault, C. D. Beggan, J. Aubert, J. Baerenzung, W. J. Brown, S. Califf, A. Chulliat, G. A. Cox, C. C. Finlay, A. Fournier, N. Gillet, M. D. Hammer, M. Holschneider, G. Hulot, M. Korte…
    Citation: Earth, Planets and Space 2021 73:48
    Content type: Technical report Published on:

  38. We have produced a 5-year mean secular variation (SV) of the geomagnetic field for the period 2020–2025. We use the NASA Geomagnetic Ensemble Modeling System (GEMS), which consists of the NASA Goddard geodynam...

    Authors: Andrew Tangborn, Weijia Kuang, Terence J. Sabaka and Ce Yi
    Citation: Earth, Planets and Space 2021 73:47
    Content type: Full paper Published on:

  39. The International Geomagnetic Reference Field (IGRF) model is a combination of the several models developed by independent groups of scientists using different approaches for the selection of input data and me...

    Authors: Valeriy G. Petrov and Tatyana N. Bondar
    Citation: Earth, Planets and Space 2021 73:46
    Content type: Express Letter Published on:

  40. Using magnetic field data from the China Seismo-Electromagnetic Satellite (CSES) mission, we derive a global geomagnetic field model, which we call the CSES Global Geomagnetic Field Model (CGGM). This model de...

    Authors: Yanyan Yang, Gauthier Hulot, Pierre Vigneron, Xuhui Shen, Zeren Zhima, Bin Zhou, Werner Magnes, Nils Olsen, Lars Tøffner-Clausen, Jianpin Huang, Xuemin Zhang, Shigeng Yuan, Lanwei Wang, Bingjun Cheng, Andreas Pollinger, Roland Lammegger…
    Citation: Earth, Planets and Space 2021 73:45
    Content type: Full paper Published on:

  42. This paper describes the design of a candidate secular variation model for the 13th generation of the International Geomagnetic Reference Field. This candidate is based upon the integration of an ensemble of 1...

    Authors: Alexandre Fournier, Julien Aubert, Vincent Lesur and Guillaume Ropp
    Citation: Earth, Planets and Space 2021 73:43
    Content type: Full paper Published on:

  43. The three candidate models submitted by the British Geological Survey for the 13th generation International Geomagnetic Reference Field are described. These DGRF and IGRF models are derived from vector and sca...

    Authors: William J. Brown, Ciarán D. Beggan, Grace A. Cox and Susan Macmillan
    Citation: Earth, Planets and Space 2021 73:42
    Content type: Full paper Published on:

  44. The South Atlantic Anomaly (SAA) is a region at Earth’s surface where the intensity of the magnetic field is particularly low. Accurate characterization of the SAA is important for both fundamental understandi...

    Authors: Hagay Amit, Filipe Terra-Nova, Maxime Lézin and Ricardo I. Trindade
    Citation: Earth, Planets and Space 2021 73:38
    Content type: Full paper Published on:

  45. The magnetotelluric method is increasingly being used to monitor electrical resistivity changes in the subsurface. One of the preferred parameters derived from the surface impedance is the strike direction, wh...

    Authors: Ana G. Bravo-Osuna, Enrique Gómez-Treviño, Olaf J. Cortés-Arroyo, Nestor F. Delgadillo-Jauregui and Rocío F. Arellano-Castro
    Citation: Earth, Planets and Space 2021 73:34
    Content type: Full paper Published on:

  46. Models of the geomagnetic field rely on magnetic data of high spatial and temporal resolution to give an accurate picture of the Earth’s internal magnetic field and its time-dependence. The magnetic data from ...

    Authors: Clemens Kloss, Christopher C. Finlay and Nils Olsen
    Citation: Earth, Planets and Space 2021 73:23
    Content type: Full paper Published on:

  47. Taking into account the motional induction effect, in which the Earth crust that has finite electrical conductivity vibrates in the ambient geomagnetic field resulting in motionally induced electric current, w...

    Authors: Yao-Chong Sun, Hengxin Ren, Ken’ichi Yamazaki, Ling Zeng, Qinghua Huang and Xiaofei Chen
    Citation: Earth, Planets and Space 2021 73:20
    Content type: Full paper Published on:

  49. Crustal earthquake ruptures tend to initiate near fluid-rich zones. However, it is relatively unknown whether fluid-rich zones can further promote or arrest these ruptures. We image the electrical resistivity ...

    Authors: Koki Aizawa, Shinichi Takakura, Hisafumi Asaue, Katsuaki Koike, Ryokei Yoshimura, Ken’ichi Yamazaki, Shintaro Komatsu, Mitsuru Utsugi, Hiroyuki Inoue, Kaori Tsukamoto, Makoto Uyeshima, Takao Koyama, Wataru Kanda, Tohru Yoshinaga, Nobuo Matsushima, Kazunari Uchida…
    Citation: Earth, Planets and Space 2021 73:12
    Content type: Express Letter Published on:

  50. To analyze the process of subduction of the Nazca and South American plates in the area of the Southern Andes, and its relationship with the tectonic and volcanic regime of the place, magnetotelluric measureme...

    Authors: Maria Jose Segovia, Daniel Diaz, Katarzyna Slezak and Felipe Zuñiga
    Citation: Earth, Planets and Space 2021 73:5
    Content type: Full paper Published on:
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