Results 11 to 20 of about 84 (42)

Interplay of Gravity Waves and Disturbance Electric Fields to the Abnormal Ionospheric Variations During the 11 May 2024 Superstorm

open access: yesAGU Advances
The strongest geomagnetic storm in the preceding two decades occurred in May 2024. Over these years, ground‐based observational capabilities have been significantly enhanced to monitor the ionospheric weather.
Fuqing Huang   +9 more
doaj   +3 more sources

First Detection of the Enigmatic Low Latitude 150‐km Echoes in the UHF Band

open access: yesGeophysical Research Letters
Through applying a 4‐MHz linear frequency modulation waveform, which has high range resolution and signal intensity, we successfully detected for the first time the ionospheric 150‐km echo enhancement at 430–450 MHz of the Ultra‐High‐Frequency (UHF) band
Xinan Yue   +8 more
doaj   +3 more sources

Moon Imaging Technique and Experiments Based on Sanya Incoherent Scatter Radar [PDF]

open access: yesIEEE Transactions on Geoscience and Remote Sensing, 2022
This article introduces the experiment design for Moon imaging based on Sanya incoherent scatter radar (SYISR) and algorithm research in data processing. The peak power of SYISR is 2 MW.
Mingyuan Li, Lingqi Zeng, Xinan Yue
exaly   +2 more sources

Preliminary Experimental Results by the Prototype of Sanya Incoherent Scatter Radar

open access: yesEarth and Planetary Physics, 2020
In the past decades, the Incoherent Scatter Radar (ISR) has been demonstrated to be one of the most powerful instruments for ionosphere monitoring. The Institute of Geology and Geophysics at the Chinese Academy of Sciences was founded to build a state-of-
Xinan Yue
exaly   +3 more sources

Determination of the Mysterious O+‐O Collision Frequency Factor From the Sanya Incoherent Scatter Radar Measurements

open access: yesGeophysical Research Letters
Collisions between oxygen atoms and oxygen ions play a crucial role in the momentum and energy exchange between the ionosphere and the thermosphere.
Ning Zhang   +8 more
doaj   +2 more sources

Ionospheric Day‐to‐Day Variability Driven by Nonlinear Interactions Between the Terdiurnal Tide and Planetary Waves Under Magnetospheric Modulation

open access: yesGeophysical Research Letters
Day‐to‐day variability is a persistent feature of the ionosphere, but distinguishing contributions from the atmosphere below or geospace above remains unclear.
Xu Zhou   +11 more
doaj   +2 more sources

Daytime Ionospheric Density Enhancement Driven by Poleward Neutral Wind Shear Associated With Gravity Waves During the November 2025 Geomagnetic Storm

open access: yesGeophysical Research Letters
The threefold daytime electron density increases, along with strong poleward meridional winds exceeding 200 m/s were captured by Sanya Incoherent Scatter Radar (SYISR) during the geomagnetic storm of 12 November 2025.
Qi Jiang   +7 more
doaj   +2 more sources

Upper Limit of Ice Content at the Lunar South Pole as Revealed by the Earth-Based SYISR–FAST Bistatic Radar System

open access: yesScience Bulletin
An increasing amount of evidence indicates that lunar water ice exists in permanently shadowed regions at the poles and will soon become an important resource for lunar exploration. However, the water ice content and distribution are still uncertain.
Jinghai Sun, Mingyuan Li
exaly   +3 more sources

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