Results 61 to 70 of about 1,577 (144)

Low frequency seismogenic electromagnetic emissions as precursors to earthquakes and volcanic eruptions in Japan [PDF]

, 1991
A multipoint network was constructed in the Tokyo area for earthquake prediction using seismogenic electromagnetic emissions. The network consists of eight observation points within 50 km of each other.Each point has a digital direction-finding detector ...
Takeo Yoshino
core   +1 more source

Ionospheric perturbations in possible association with the 2010 Haiti earthquake, as based on medium-distance subionospheric VLF propagation data [PDF]

, 2011
Ionospheric perturbations in possible association with the 2010 Haiti earthquake occurred on 12 January 2010 (with a magnitude of 7.0 and depth of 10 km) are investigated on the basis of subionospheric propagation data from the NAA transmitter on the ...
F. C. P. Bertoni, J. P. Raulin, M. Hayakawa, W. Guevara-Day, Y. Hobara, Y. Kasahara   +5 more
core   +1 more source

A Numerical Consideration on the Correlation Between Magnitude of Earthquakes and Current Intensity Causing ULF Electromagnetic Wave Emission

Radio Science, Volume 59, Issue 7, July 2024.
Abstract Numerous studies have reported anomalous ultralow frequency (ULF) electromagnetic fields preceding earthquakes. In this paper, we estimate the current intensity responsible for generating the earthquake‐related ULF fields under the assumption that the origin is a current flowing at the hypocenter and that it has the same frequency dependence ...
Ryota Kimura, Yoshiaki Ando, Leo Kukiyama, Tomoya Masuzawa, Katsumi Hattori, Masashi Hayakawa   +5 more
wiley   +1 more source

Empowering Machine Learning Forecasting of Labquake Using Event‐Based Features and Clustering Characteristics

Journal of Geophysical Research: Machine Learning and Computation, Volume 1, Issue 2, June 2024.
Abstract Following recent advances of machine learning (ML), we present a novel approach to extract spatiotemporal seismo‐mechanical features from Acoustic Emission (AE) catalogs to empower ML‐based forecasting. The AE data were recorded during laboratory stick‐slip experiments on granite samples cut by rough faults.
Sadegh Karimpouli, Grzegorz Kwiatek, Yehuda Ben‐Zion, Patricia Martínez‐Garzón, Georg Dresen, Marco Bohnhoff   +5 more
wiley   +1 more source

Evaluation of the satellite’s wake effect on the electric field detector onboard the CSES-01 satellite

Earth and Planetary Physics
This study aimed to evaluate the wake effect on the electric field detector (EFD) onboard the China Seismo-Electromagnetic Satellite (CSES-01). Through a series of experiments and analyses, we confirmed that the disturbance phenomenon from probe B of the
JianPing Huang, ZongYu Li, Zhong Li, XingHong Zhu, JunGang Lei, YuanQing Miao, WenJing Li   +6 more
doaj   +1 more source

Characterizing Liquid Water in Deep Martian Aquifers: A Seismo‐Electric Approach

Journal of Geophysical Research: Planets, Volume 129, Issue 5, May 2024.
Abstract Deep Martian aquifers harboring liquid water could hold vital insights for current and past habitability. We show that with seismo‐electric interface responses (IRs) we can quantitatively characterize subsurface water on Mars. Full‐waveform simulations and sensitivity analyses across diverse Martian aquifer scenarios demonstrate the technique ...
N. Roth, T. Zhu, Y. Gao
wiley   +1 more source

Dynamically triggered seismicity on a tectonic scale: A review

Deep Underground Science and Engineering, Volume 3, Issue 1, Page 1-24, March 2024.
Research on the mechanism and models of earthquake triggering by dynamic disturbances is reviewed. The drawbacks of the available research works on earthquake triggering are pointed out. Some suggestions on scientific issues of earthquake triggering for future research are proposed.
Chengzhi Qi, Mingyang Wang, Gevorg Kocharyan, Artem Kunitskikh, Zefan Wang   +4 more
wiley   +1 more source

Investigating the Main Features of the Correlation Between Electron Density and Temperature in the Topside Ionosphere Through Swarm Satellites Data

Journal of Geophysical Research: Space Physics, Volume 129, Issue 3, March 2024.
Abstract Electron density (Ne) and electron temperature (Te) observations collected by Langmuir Probes on board the European Space Agency (ESA) Swarm B satellite are used to characterize their correlation in the topside ionosphere at an altitude of about 500 km.
A. Pignalberi, F. Giannattasio, V. Truhlik, I. Coco, M. Pezzopane, T. Alberti   +5 more
wiley   +1 more source

Preseismic ULF electromagnetic effect from observation at Kamchatka [PDF]

, 2003
International audienceSome results of ULF magnetic field observation at Karimshino site (Kamchatka, Russia) since June 2000 to September 2001 are presented here.
Belyaev, G., Fedorov, E., Gordeev, E., Molchanov, O., Schekotov, A.   +4 more
core   +1 more source

On the ionospheric perturbation associated with the 2007 Niigata Chuetsu-oki earthquake, as seen from subionospheric VLF/LF network observations [PDF]

, 2008
International audienceIn order to investigate any precursory effect of ionospheric perturbations associated with the large 2007 Niigata Chuetsu-oki earthquake (16 July 2007) (magnitude, 6.8), we have made full use of our VLF/LF network observation in ...
Hayakawa, M., Horie, T., Kasahara, Y., Muto, F., Nakamura, T., Ohta, K., Yoshida, M.   +6 more
core   +1 more source