Results 31 to 40 of about 13,457,474 (289)

Isolated ionospheric disturbances as deduced from global GPS network [PDF]

Annales Geophysicae, 2004
We investigate an unusual class of medium-scale traveling ionospheric disturbances of the nonwave type, isolated ionospheric disturbances (IIDs) that manifest themselves in total electron content (TEC) variations in the form of single aperiodic ...
E. L. Afraimovich, E. I. Astafieva, S. V. Voyeikov   +2 more
doaj   +1 more source

Ionospheric total electron content of comet 67P/Churyumov-Gerasimenko [PDF]

, 2020
We study the evolution of a cometary ionosphere, using approximately two years of plasma measurements by the Mutual Impedance Probe on board the Rosetta spacecraft monitoring comet 67P/Churyumov-Gerasimenko (67P) during August 2014–September 2016. The in
Pierre Henri, Hajra, Rajkumar, Henri, Pierre, Bucciantini, Luca, Marina Galand, Luca Bucciantini, Vallières, Xavier, Tsurutani, Bruce T., Tsurutani, Bruce T, Galand, Marina, Bruce T. Tsurutani, Nemeth, Zoltan, Martin Rubin, Nicolas Gilet, Xavier Vallières, Zoltan Nemeth, Rajkumar Hajra, Rubin, Martin, Gilet, Nicolas   +18 more
core   +2 more sources

Determination of Ionospheric Total Electron Content (TEC): Phase Measurement Based on Leveling Technique

2009 Third UKSim European Symposium on Computer Modeling and Simulation, 2009
GPS has become a great tool for ionospheric studies and research. The accuracy or quality of coordination data of GPS receiver can be increased by determining the source and factor of the disturbances that produce at ionosphere layer. Basically, dual frequency carrier-phase and code-delay Global Positioning System (GPS) observations are combined to ...
Mohamad Huzaimy Bin Jusoh, Noor Hafizah Abdul Aziz, Muhammad Adib Haron, Mohd Amirshaifulrazain Abu Zaini, Ahmad Asari Sulaiman   +4 more
openaire   +4 more sources

A model assisted ionospheric electron density reconstruction method based on vertical TEC data ingestion

Annals of Geophysics, 2005
A technique to reconstruct the electron density of the ionosphere starting from total electron content values has been developed using the NeQuick ionospheric electron density model driven by its effective ionization parameter Az. The technique
S. M. Radicella, F. Azpilicueta, G. Miró Amarante, P. Coïsson, B. Nava   +4 more
doaj   +1 more source

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source

The Effect of Sunspots Number on the Total Electron Content (TEC) of the Ionospheric Layer E Over Kirkuk Station for Solar Cycle 24 [PDF]

Kirkuk Journal of Science, 2020
In this work, the effect of sunspots number (Ri) on the Total electronic content (TEC) were studied for the years (2008, 2014, 2018) which represents the rising phase, the peak and the down phase of the solar cycle 24 over Kirkuk station in Iraq at ...
Wafaa Zaki, Rwziah Mahmood Mohammed, Jawdet Hidayat   +2 more
doaj   +1 more source

Radio tomographic imaging of the northern high-latitude ionosphere on a wide geographic scale [PDF]

, 2005
Several chains of receivers, measuring total electron content (TEC) during passes of satellites in the U.S. Navy Ionospheric Measuring System (NIMS), are operated at northern high latitudes by members of the International Ionospheric Tomography Community
Bailey, G.J., Jakowski, N., Fremouw, E., Bust, G., Denton, M.H., Kersley, L., Pryse, Elery, Jakowski, Norbert, Pryse, S.E., Secan, J., Kersley, Len   +10 more
core  

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

Advanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto, Javier Zamudio‐García, Abraham Sánchez‐Caballero, David Marrero‐López, Vincenzo Esposito   +4 more
wiley   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Spatial, Seasonal, and Solar Cycle Variations of the Martian Total Electron Content (TEC): Is the TEC a Good Tracer for Atmospheric Cycles? [PDF]

Journal of Geophysical Research: Planets, 2018
AbstractWe analyze 10 years of Mars Express total electron content (TEC) data from the Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) instrument. We describe the spatial, seasonal, and solar cycle behavior of the Martian TEC. Due to orbit evolution, data come mainly from the evening, dusk terminator and postdusk nightside.
Beatriz Sánchez‐Cano, Mark Lester, Olivier Witasse, Pierre‐Louis Blelly, Mikel Indurain, Marco Cartacci, Francisco González‐Galindo, Álvaro Vicente‐Retortillo, Andrea Cicchetti, Raffaella Noschese   +9 more
openaire   +6 more sources