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  • November 12, 2019

[Frontier Letter] Occurrence of F region echoes for the polar cap SuperDARN radars

The quality of global-scale ionospheric plasma circulation maps provided by the SuperDARN radars depends strongly on the number of detected echoes. Over the last decade of relatively low solar activity, the best SuperDARN echo occurrence rates are in the polar cap. Koustov et al. (2019) show that SuperDARN radars in both the North and South hemispheres have similar patterns in echo occurrence over the daily, seasonal, and solar cycles. Many… Read more

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  • November 4, 2019

[Frontier Letter] Structural heterogeneity in and around the fold-and-thrust belt of the Hidaka Collision zone, Hokkaido, Japan and its relationship to the aftershock activity of the 2018 Hokkaido Eastern Iburi Earthquake

The 2018 Hokkaido Eastern Iburi Earthquake (M=6.7) occurred at a very deep depth (~37 km) beneath the foreland fold-and-thrust belt of the Hidaka Collision Zone, Hokkaido, Japan. From the previously acquired controlled source seismic data, Iwasaki et al. (2019) revealed the detailed structure beneath this fold-and-thrust belt and its relationship with the aftershock activity of this earthquake. Relocated aftershocks are at depths of 7-45 km with steep geometry, extending to… Read more

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  • August 8, 2019

EPS Express Letters

Express Letters provide you with a fast turnaround time, while maintaining rigorous peer review. The turnaround time on average is 43 days from submission to first decision. The following list gives you the all-time fastest Express Letters in each section published from January 2017 to July 2019 (77 papers in total). Click thumbnails to access article pages. Section 1. Geomagnetism Komori et al. (2017): Depth profiles of resistivity and spectral… Read more

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  • July 15, 2019

[Frontier Letter] Temporal variations in discharge rate and component characteristics of tephra-fall deposits during the 2014–2015 eruption of Nakadake first crater, Aso Volcano, Japan

Miyabuchi and Hara (2019) present the distribution, discharged mass, and components of tephra-fall deposits to examine the sequence and characteristics of the 2014-2015 magmatic eruption at Nakadake first crater, Aso Volcano, SW Japan. Continuous monitoring of tephra deposits and visual observation of eruptive phenomena combined with geophysical observations, would provide new insights into magmatic and eruptive processes on small but long-lasting activities at Nakadake Volcano and other similar basaltic to… Read more

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  • June 13, 2019

Highly Cited 14 Articles Published in EPS

Web of Science picked the following 14 articles published in EPS as "highly cited papers". As of January/February 2019, these highly cited papers received enough citations to place it in the top 1% of the academic field of Geosciences based on a highly cited threshold for the field and publication year. Don't miss spotlighted papers published in EPS! From Section 1. Geomagnetism Finlay et al. (2016): Recent geomagnetic secular variation… Read more

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  • June 2, 2019

[Frontier Letter] Constraining the magnetic properties of ultrafine- and fine-grained biogenic magnetite

Studies of biogenic magnetite and magnetotactic bacteria are gaining increasing prominence, spanning the disciplines of earth and planetary science and biological science. Zhang and Pan (2018) review the characterization of magnetite associated with magnetoferritins and magnetotactic bacteria. The former relates to important potential biomedical applications whereas the latter applies to the continued effort to define modern magnetotactic bacteria populations and magnetofossils in deep geologic time. This article was a contribution to the special issue of “Recent Advances in Geo-, Paleo- and Rock- Magnetism”. Read more

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  • February 27, 2019

[Frontier Letter] Imaging high-latitude plasma density irregularities resulting from particle precipitation: spaceborne L-band SAR and EISCAT observations

Particle precipitation represents an important source of irregular plasma density structures in the high-latitude ionosphere. Sato et al. (2018) used Synthetic Aperture Radar to image the small-scale plasma density irregularities under high levels of ionization of up to approximately 300 km over Tromsø, Norway. The irregular electron density is characterized by tens of kilometers of band-like structures aligned in the east-west direction with small patch-like structures. This study presents the… Read more