Results 41 to 50 of about 329,822 (248)

Evidence for Missing Geomagnetic Reversals From Geomagnetic Reversal Frequency Model Using Adaptive Kernel Density Estimation

Geophysical Research Letters
The existence of missing geomagnetic reversals has been proposed, with potential for new magnetostratigraphic age controls. We estimate geomagnetic reversal frequency from 0 to 155 Ma using adaptive‐bandwidth kernel density estimation (AKDE) to evaluate ...
Yutaka Yoshimura, Masakazu Fujii, Hideitsu Hino, Shotaro Akaho, Satoshi Kuriki, Osamu Ishizuka, Toshitsugu Yamazaki, Hyeon‐Seon Ahn, Tesfaye Kidane, Yuhji Yamamoto, Yo‐ichiro Otofuji   +10 more
doaj   +1 more source

Bats respond to very weak magnetic fields. [PDF]

PLoS ONE, 2015
How animals, including mammals, can respond to and utilize the direction and intensity of the Earth's magnetic field for orientation and navigation is contentious.
Lan-Xiang Tian, Yong-Xin Pan, Walter Metzner, Jin-Shuo Zhang, Bing-Fang Zhang   +4 more
doaj   +1 more source

Middle Miocene-Pleistocene Magneto-Cyclostratigraphy from IODP Site U1501 in the Northern South China Sea

Frontiers in Earth Science, 2022
Site U1501 of International Ocean Discovery Program (IODP) Expedition 368 locates on a broad regional basement high in the northern margin of the South China Sea (SCS).
Meinan Shi, Meinan Shi, Meinan Shi, Huaichun Wu, Huaichun Wu, Huaichun Wu, Eric C. Ferré, Sara Satolli, Qiang Fang, Qiang Fang, Qiang Fang, Yunfeng Nie, Yunfeng Nie, Yunfeng Nie, Yuhe Qin, Yuhe Qin, Yuhe Qin, Shihong Zhang, Tianshui Yang, Haiyan Li   +19 more
doaj   +1 more source

Numerical Algorithm for Detecting Ion Diffusion Regions in the Geomagnetic Tail with Applications to MMS Tail Season May 1 -- September 30, 2017

, 2019
We present a numerical algorithm aimed at identifying ion diffusion regions (IDRs) in the geomagnetic tail, and test its applicability. We use 5 criteria applied in three stages.
Farrugia, C. J., Rogers, A. J., Torbert, R. B.   +2 more
core   +1 more source

Long-time behavior of MHD shell models [PDF]

, 2000
The long time behavior of velocity-magnetic field alignment is numerically investigated in the framework of MHD shell model. In the stationary forced case, the correlation parameter C displays a nontrivial behavior with long periods of high variability ...
Anufriev A., Biskamp D., Bohr T., D Sokoloff, Frick P., G Boffetta, Giuliani P., Giuliani P., P Frick, P Giuliani, Rikitake T., S Lozhkin   +11 more
core   +1 more source

Multiterminal High‐Voltage Direct Current Projects: A Comprehensive Assessment and Future Prospects

High Voltage, EarlyView.
ABSTRACT Multiterminal high‐voltage direct current (MT‐HVDC) systems are an important part of modern power systems, addressing the need for bulk power delivery and efficient renewable energy integration. This paper provides a comprehensive overview of recent advances in MT‐HVDC technology, including launched projects and ongoing initiatives.
Mohammad Hossein Mousavi, Hassan Moradi, Kumars Rouzbehi, Vijay K. Sood   +3 more
wiley   +1 more source

Mono Lake or Laschamp geomagnetic event recorded from lava flows in Amsterdam Island (southeastern Indian Ocean)

, 2003
We report a survey carried out on basalt flows from Amsterdam Island in order to check the presence of intermediate directions interpreted to belong to a geomagnetic field excursion within the Brunhes epoch, completing this paleomagnetic record with ...
Bernard Henry, Camps, Claire Carvallo, Dunlop, Gilles Ruffet, Guyodo, Hoffman, Hoffman, Pierre Camps, T. Poidras, Tauxe, Vinogradov   +11 more
core   +4 more sources

Scale disparities and magnetohydrodynamics in the Earth’s core [PDF]

, 2000
Fluid motions driven by convection in the Earth’s fluid core sustain geomagnetic ­ fields by magnetohydrodynamic dynamo processes. The dynamics of the core is critically influenced by the combined effects of rotation and magnetic ­ fields.
Gubbins, D., Zhang, K.
core   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, EarlyView.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source

When and why sediments fail to record the geomagnetic field during polarity reversals

, 2016
We present four new records of the Matuyama–Brunhes (M–B) reversal from sediments of the Equatorial Indian Ocean, West Equatorial Pacific and North Atlantic Oceans with deposition rates between 2 cm/kyr and 4.5 cm/kyr.
J. Valet, L. Meynadier, Q. Simon, N. Thouveny   +3 more
semanticscholar   +1 more source