Zobrazeno 1 - 10
of 33
pro vyhledávání: '"A.-M. Blixt"'
Publikováno v:
Quarterly Journal of the Royal Meteorological Society. 146:2634-2653
This data assimilation study exploits infrasound from explosions to probe an atmospheric wind component from the ground up to stratospheric altitudes. Planned explosions of old ammunition in Finland generate transient infrasound waves that travel thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78fbebd1ef9bcd21a71c974309027c87
https://doi.org/10.1002/qj.3809
https://doi.org/10.1002/qj.3809
Publikováno v:
Annales Geophysicae, Vol 24, Pp 2419-2427 (2006)
The link between natural ion-line enhancements in radar spectra and auroral activity has been the subject of recent studies but conclusions have been limited by the spatial and temporal resolution previously available. The next challenge is to use
Externí odkaz:
https://doaj.org/article/a9d403372e28468ebb7a752cd75b68c5
Publikováno v:
Annales Geophysicae, Vol 23, Pp 1611-1621 (2005)
Black auroras are recognized as spatially well-defined regions within uniform diffuse aurora where the optical emission is significantly reduced. Although a well studied phenomenon, there is no generally accepted theory for black auroras. One theo
Externí odkaz:
https://doaj.org/article/3bfc5a0ab66e42e1b2d777d8a0859c4a
Autor:
E. M. Blixt, T. Grydeland, N. Ivchenko, T. Hagfors, C. La Hoz, B. S. Lanchester, U. P. Løvhaug, T. S. Trondsen
Publikováno v:
Annales Geophysicae, Vol 23, Pp 3-11 (2005)
The generation mechanism for naturally enhanced ion-acoustic echoes is still debated. One important issue is how these enhancements are related to auroral activity. All events of enhanced ion-acoustic echoes observed simultaneously with the EIS
Externí odkaz:
https://doaj.org/article/9b80fa1a388848c7b279c00d2aa5ef7d
Publikováno v:
Annales Geophysicae, Vol 22, Pp 1115-1132 (2004)
Several explanations have been proposed for Naturally Enhanced ion-acoustic Echoes observed at mid- and high-latitude Incoherent Scatter observatories. A decisive measure for distinguishing between these explanations is whether or not simultaneous
Externí odkaz:
https://doaj.org/article/863d91647d3342ea9abb39ead95d11a0
Autor:
Läslo Evers, Tormod Kværna, Steven J. Gibbons, E. M. Blixt, Yvan J. Orsolini, Andrew Charlton-Perez, Sven Peter Näsholm
Publikováno v:
The Journal of the Acoustical Society of America, 146(2)
The receiver-to-source backazimuth of atmospheric infrasound signals is biased when cross-winds are present along the propagation path. Infrasound from 598 surface explosions from over 30 years in northern Finland is measured with high spatial resolu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fdd08e907f76afacb4e6baafc3b0699
http://arxiv.org/abs/1907.05601
http://arxiv.org/abs/1907.05601
Publikováno v:
First Break. 35
This paper describes a statistical method for determining the probability for hydrocarbon detection by Controlled Source Electromagnetic (CSEM) data. The method can be used to quantitatively estimate the reliability and predictability of CSEM results
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dabeeaafe43e92ec95804bddfdfa2999
https://doi.org/10.3997/1365-2397.2017019
https://doi.org/10.3997/1365-2397.2017019
Autor:
Nicola M. Schlatter, M. Blixt, T. Grydeland, J. Sullivan, Nickolay Ivchenko, C. La Hoz, V. Belyey
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. :287-292
The EISCAT Svalbard Radar has two parabolic dishes. In order to attempt to implement radar aperture synthesis imaging methods three smaller, passive receive array antennas were built. Several science goals for this new receiver system exist, the prim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a52d7bc5a33c9dae6cb89b26c6ff1e48
https://doi.org/10.1016/j.jastp.2012.11.017
https://doi.org/10.1016/j.jastp.2012.11.017
Publikováno v:
Annales Geophysicae, Vol 24, Pp 2419-2427 (2006)
Annales Geophysicae
Annales Geophysicae, European Geosciences Union, 2006, 24 (9), pp.2419-2427
Scopus-Elsevier
Annales Geophysicae, Vol 24, Iss 9, Pp 2419-2427 (2006)
Annales Geophysicae
Annales Geophysicae, European Geosciences Union, 2006, 24 (9), pp.2419-2427
Scopus-Elsevier
Annales Geophysicae, Vol 24, Iss 9, Pp 2419-2427 (2006)
The link between natural ion-line enhancements in radar spectra and auroral activity has been the subject of recent studies but conclusions have been limited by the spatial and temporal resolution previously available. The next challenge is to use sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2db91bee49d1bb1ce41beb67d12499f2
https://www.ann-geophys.net/24/2419/2006/angeo-24-2419-2006.pdf
https://www.ann-geophys.net/24/2419/2006/angeo-24-2419-2006.pdf
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 3:159-163
Optical observations of the aurora have traditionally focused on the structure, intensity, and wavelength of the emissions. But the apparent motion of auroral forms offers another important diagnostic tool for investigating this poorly understood phe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c279449b40a57a61e3b5965e0b969422
https://doi.org/10.1109/lgrs.2005.860981
https://doi.org/10.1109/lgrs.2005.860981