Geophysical Monograph Series, Page i-xiv., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
wiley +1 more source
Ionospheric Narrowband and Wideband HF Soundings for Communications Purposes: A Review
Sensors, 2020 High Frequency (HF) communications through ionospheric reflection is a widely used technique specifically for maritime, aeronautical, and emergency services communication with remote areas due to economic and management reasons, and also as backup system.
Marcos Hervás +2 more
doaj +1 more source
Long-term trends of foF2 independent of geomagnetic activity [PDF]
Annales Geophysicae, 2003 A detailed analysis of the foF2 data at a series of ionospheric stations is performed to reveal long-term trends independent of the long-term changes in geomagnetic activity during the recent decades (nongeomagnetic trends). The method developed by
A. D. Danilov
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Global observations of ROTI by using ground-based GNSS receivers
Terrestrial, Atmospheric and Oceanic Sciences, 2021 Diurnal, monthly, and solar activity variations in L-band signal fluctuations are examined by ROTI (Rate Of Tec Index) derived from measurements of worldwide ground-based GNSS (Global Navigation Satellite System) receivers in 2000, 2009, and 2013 ...
Jann-Yenq Liu Shih-An Wu
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Multi-layer structure of mid-latitude sporadic-E observed during the SEEK-2 campaign [PDF]
Annales Geophysicae, 2005 In the mid-latitude ionospheric region, sporadic-E layers (Es layers) have often been observed, revealing multiple layers. The Es layers observed during the SEEK-2 rocket campaign showed double electron density peaks; namely, there are stable lower ...
M. Wakabayashi, T. Ono
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Type-1 echoes from the mid-latitude E-Region ionosphere [PDF]
Annales Geophysicae, 1997 This paper presents more data on the properties of type-1 irregularities in the nighttime mid-latitude E-region ionosphere. The measurements were made with a 50-MHz Doppler radar system operating in Crete, Greece.
C. Haldoupis, D. T. Farley, K. Schlegel
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Non-trough foF2 enhancements at near-equatorial dip latitudes [PDF]
Annales Geophysicae, 1998 Fine resolution series from three equatorial ionosondes of the IEEY network in West Africa have revealed small-scale daytime peak F2 structures, superposed on the slowly varying minimum or "trough" distribution in the ±5° magnetic latitude zone.
E. Sambou, P. M. Vila, A. T. Kobea
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Seasonal and magnetic activity variations of ionospheric electric fields above the southern mid-latitude station, Bundoora, Australia [PDF]
Annales Geophysicae, 2001 We investigate the seasonal, local solar time, and geomagnetic activity variations of the average Doppler velocity measured by an HF digital ionosonde deployed at Bundoora, Australia (145.1° E, 37.7° S, geographic; 49° S magnetic).
M. L. Parkinson +5 more
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A model of mid-latitude E-region plasma convergence inside a planetary wave cyclonic vortex [PDF]
Annales Geophysicae, 2002 Recently, Shalimov et al. (1999) proposed a new mechanism for large-scale accumulation of long-lived metallic ions in the mid-latitude ionosphere driven by planetary waves in the lower thermosphere.
S. Shalimov +3 more
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Solar-Terrestrial Physics, 2023 A comprehensive study of spatio-temporal variations of geomagnetic, ionospheric, and atmospheric parameters in the middle and high latitudes of the Northern Hemisphere during a series of magnetic storms in March 2012 has been expanded by including ...
Chernigovskaya M. A. +2 more
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