Results 91 to 100 of about 2,664 (215)

Revisiting the Ionospheric Disturbances Over Low Latitude Region of China During Super Typhoon Hato

Space Weather
The ionosphere exhibits complex variations due to the influences from above and below. To distinguish the source of ionospheric disturbances is important for understanding the variation process and the coupling mechanism among different regions.
Ke Li, Donghe Zhang, Yi Zeng, Yaoyu Tian, Guofeng Dai, Zhizhao Liu, Guanglin Yang, Shuji Sun, Guozhu Li, Yongqiang Hao, Zuo Xiao   +10 more
doaj   +1 more source

Ionospheric disturbances in Japan detected by ALOS-2 subband azimuth offset

Earth, Planets and Space
Global Navigation Satellite Systems (GNSS) and synthetic aperture radar (SAR) are valuable tools for observing ionospheric disturbances. While GNSS provides continuous temporal data with limited spatial resolution, SAR offers high-resolution spatial ...
Yu Morishita, Ryu Sugimoto, Toru Kouyama, Chiaki Tsutsumi   +3 more
doaj   +1 more source

Worldwide VHF satellite scintillation/fading tests - ATS project [PDF]

Ionospheric effects on propagation of VHF telemetry signals from ...

core   +1 more source

Estimating traveling ionospheric disturbance propagation direction and speed using bistatic high-frequency oceanographic radars

Journal of Space Weather and Space Climate
The purpose of this investigation is to demonstrate how observations from a network of Coastal Ocean Dynamics Applications Radars (CODARs) can be used to derive the parameters of a traveling ionospheric disturbance (TID) in the mid-latitudes.
Markowski Danielle G., Kaeppler Stephen R., Pepper Andrew M., Coleman Lawrence F.   +3 more
doaj   +1 more source

The 74MHz System on the Very Large Array

, 2007
The Naval Research Laboratory and the National Radio Astronomy Observatory completed implementation of a low frequency capability on the VLA at 73.8 MHz in 1998.
A. S. Cohen, B. Hicks, Baars J. W. M., Braude S. Ya., Brentjens M. A., Cornwell T. J., D. Katz, Duim R. M., E. W. Greisen, Erickson W. C., Falcke H., H. R. Schmitt, Jacobson A. R., Jagers W. J., Jagers W. J., Jones L. R., Kassim N. E., Kronberg P. P., Kuhr H., Leahy J. P., Leahy J. P., Leahy J. P., McCready L. L., N. E. Kassim, Napier P. J., Pawsey J. L., Pedlar A., R. A. Perley, Rees N., Roger R. S., Ryle M., Ryle M., Ryle M., Shkolvsky I. S., Slee O. B., Slee O. B., Slee O. B., Subramanian K. R., Swarup G., T. Joseph W. Lazio, Taylor G. B., Thomasson P., W. C. Erickson, W. D. Cotton, Yates K. W.   +44 more
core   +1 more source

Regional Medium‐Scale Traveling Ionospheric Disturbance Propagation Model Based on BDS GEO Satellites

Space Weather
Accurate modeling of traveling ionospheric disturbances (TIDs) is essential for characterizing their spatiotemporal variations and mitigating their effects on Global Navigation Satellite System (GNSS) precise positioning.
Dengkui Mei, Xiaohong Zhang, Xiaodong Ren, Xuan Le, Wentao Yang, Ahmed Abdelaziz   +5 more
doaj   +1 more source

Longitudinal effects of ionospheric responses to substorms at middle and lower latitudes: a case study

Annales Geophysicae
An ionospheric model is used to simulate total electron content (TEC) disturbance events observed at middle and lower latitude sites near 75°W and 7°E longitudes.
X. Pi, M. Mendillo, P. Spalla, D. N. Anderson   +3 more
doaj  

Origin of Intense Plasma Depletions After Midnight Over the Korean Peninsula During the Geomagnetic Storm on 11 May 2024

Geophysical Research Letters
A band of total electron content (TEC) depletions of about 5–15 TEC unit passed over the Korean Peninsula after midnight during the geomagnetic storm on 11 May 2024. This magnitude of TEC depletions has not been previously reported in the region.
Hyosub Kil, Se‐Heon Jeong, Woo Kyoung Lee, Junseok Hong, Septi Perwitasari, Michi Nishioka, Prayitno Abadi   +6 more
doaj   +1 more source

Measuring Power of Earth Disturbances Using Radio Wave Phase Imager. [PDF]

J Imaging, 2023
Sharif RNK, Herring RA.
europepmc   +1 more source

Geomagnetic control of the spectrum of traveling ionospheric disturbances based on data from a global GPS network

, 2001
International audienceIn this paper an attempt is made to verify the hypothesis of the role of geomagnetic disturbances as a factor in determining the intensity of traveling ionospheric disturbances (TIDs). To improve the statistical validity of the data,
Afraimovich, E. L., Kosogorov, E. A., Lesyuta, O. S., Ushakov, I. I., Yakovets, A. F.   +4 more
core