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1. Geomagnetism

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  1. Content type: Letter

    Studies on geomagnetic paleointensity using marine sediments revealed that intensity fluctuations contain variations with timescales of 104 years and longer. In contrast, directional secular variations of such ti...

    Authors: Toshitsugu Yamazaki, Takaya Shimono and Seiko Inoue

    Citation: Earth, Planets and Space 2016 68:174

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  2. Content type: Full paper

    This research focuses on the inversion of geomagnetic variation field measurements to obtain the source currents in the ionosphere and magnetosphere, and to determine the geoelectric fields at the Earth’s surf...

    Authors: J. S. de Villiers, R. J. Pirjola and P. J. Cilliers

    Citation: Earth, Planets and Space 2016 68:154

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  3. Content type: Full paper

    We determine the strength and location of the ionospheric currents responsible for the polar electrojets from magnetic data collected by the Swarm satellite constellation on an orbit-by-orbit basis. The ionospher...

    Authors: Cecilie Drost Aakjær, Nils Olsen and Christopher C. Finlay

    Citation: Earth, Planets and Space 2016 68:140

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  4. Content type: Frontier letter

    We present the in-flight scalar calibration and characterisation of the Swarm magnetometry package consisting of the absolute scalar magnetometer, the vector magnetometer, and the spacecraft structure supporting ...

    Authors: Lars Tøffner-Clausen, Vincent Lesur, Nils Olsen and Christopher C. Finlay

    Citation: Earth, Planets and Space 2016 68:129

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  5. Content type: Letter

    The Swarm constellation of satellites was launched in November 2013 and since then has delivered high-quality scalar and vector magnetic field measurements. A consortium of several research institutions was se...

    Authors: Erwan Thébault, Pierre Vigneron, Benoit Langlais and Gauthier Hulot

    Citation: Earth, Planets and Space 2016 68:126

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  6. Content type: Letter

    More than 2 years of magnetic field data taken by the three-satellite constellation mission Swarm are used to derive a model of Earth’s magnetic field and its time variation. This model is called SIFMplus. In add...

    Authors: Nils Olsen, Christopher C. Finlay, Stavros Kotsiaros and Lars Tøffner-Clausen

    Citation: Earth, Planets and Space 2016 68:124

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  7. Content type: Full paper

    We use more than 2 years of magnetic data from the Swarm mission, and monthly means from 160 ground observatories as available in March 2016, to update the CHAOS time-dependent geomagnetic field model. The new mo...

    Authors: Christopher C. Finlay, Nils Olsen, Stavros Kotsiaros, Nicolas Gillet and Lars Tøffner-Clausen

    Citation: Earth, Planets and Space 2016 68:112

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  8. Content type: Technical report

    Pass-through superconducting rock magnetometers (SRM) offer rapid and high-precision remanence measurements for continuous samples that are essential for modern paleomagnetism studies. However, continuous SRM ...

    Authors: Hirokuni Oda, Chuang Xuan and Yuhji Yamamoto

    Citation: Earth, Planets and Space 2016 68:109

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  9. Content type: Full paper

    A complex system of electric currents flowing in the ionosphere and magnetosphere originates from the interaction of the solar wind and the Interplanetary Magnetic Field (IMF) with the Earth’s magnetic field. ...

    Authors: Roberta Tozzi, Mioara Mandea and Paola De Michelis

    Citation: Earth, Planets and Space 2016 68:108

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  10. Content type: Technical report

    The Thellier method is classical but is still regarded as the most reliable method for paleointensity determination. Recently, many types of additional protocols have been advocated to ensure reliability and m...

    Authors: Koji Fukuma and Masaru Kono

    Citation: Earth, Planets and Space 2016 68:43

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  11. Content type: FULL PAPER

    The World Digital Anomaly Map (WDMAM) is a worldwide compilation of near-surface magnetic data. We present here a candidate for the second version of the WDMAM and its characteristics. This candidate has been ...

    Authors: Vincent Lesur, Mohamed Hamoudi, Yujin Choi, Jérôme Dyment and Erwan Thébault

    Citation: Earth, Planets and Space 2016 68:27

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  12. Content type: Full paper

    Geomagnetic field data from four observatories and annual field surveys between 2005 and 2015 provide a detailed description of Earth’s magnetic field changes over South Africa, Namibia and Botswana on time sc...

    Authors: P. B. Kotzé and M. Korte

    Citation: Earth, Planets and Space 2016 68:23

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  13. Content type: Letter

    The Japan Meteorological Agency keeps records of geomagnetic phenomena observed at Kakioka (magnetic latitude, 27.47°), Memambetsu (magnetic latitude, 35.44°), and Kanoya (magnetic latitude, 22.00°). We used t...

    Authors: Yasuhiro Minamoto, Shigeru Fujita and Masahiro Hara

    Citation: Earth, Planets and Space 2015 67:191

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  14. Content type: Full paper

    After the good results obtained from an assessment of geomagnetically induced currents (GICs) in a relatively small subset of the Spanish power transmission network, we now present the first attempt to assess ...

    Authors: Joan Miquel Torta, Santiago Marsal and Marta Quintana

    Citation: Earth, Planets and Space 2014 66:87

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  15. Content type: Letter

    The West Philippine Basin (WPB) occupies the western part of the Philippine Sea (PHS) plate. The WPB is generally considered to have opened from approximately 50 to 30 Ma at the CBF rift; however, the detailed...

    Authors: Tomohiro Sasaki, Toshitsugu Yamazaki and Osamu Ishizuka

    Citation: Earth, Planets and Space 2014 66:83

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  16. Content type: Letter

    The 2008 Iwate-Miyagi Nairiku earthquake (M 7.2) was a shallow inland earthquake that occurred in the volcanic front of the northeastern Japan arc. To understand why the earthquake occurred beneath an active v...

    Authors: Hiroshi Ichihara, Shin'ya Sakanaka, Masaaki Mishina, Makoto Uyeshima, Tadashi Nishitani, Yasuo Ogawa, Yusuke Yamaya, Toru Mogi, Kazuhiro Amita and Takuya Miura

    Citation: Earth, Planets and Space 2014 66:50

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  17. Content type: Letter

    The three-dimensional distribution of fluids and melts under the NE Japan arc was imaged using its resistivity structure, modeled with geomagnetic transfer functions. The data were collected at 37 stations loc...

    Authors: Wataru Kanda and Yasuo Ogawa

    Citation: Earth, Planets and Space 2014 66:39

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  18. Content type: Letter

    Anisotropy of magnetic susceptibility (AMS) has been used extensively for determining mineral orientatrections. In terms of the sample coordinate, Kmax declinations in the three gravity cores are oriented along t...

    Authors: Takaya Shimono, Toshitsugu Yamazaki and Seiko Inoue

    Citation: Earth, Planets and Space 2014 66:3

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