Asgeir Brekke
Professor emeritus
Asgeir Brekke
:
The legacy of the Haldde Observatory
K Adachi,
Satonori Nozawa,
Y Ogawa,
Asgeir Brekke,
Chris Hall,
Ryochi Fujii
:
Evaluation of a method to derive ionospheric conductivities using two auroral emissions (428 and 630 nm) measured with a photometer at Tromsø (69.6°N)
Takuo T. Tsuda,
Satonori Nozawa,
Takuya D. Kawahara,
Tetsuya Kawabata,
Norihito Saito,
Satoshi Wada
m.fl.:
A sporadic sodium layer event detected with five-directional lidar and simultaneous wind, electron density, and electric field observation at Tromsø, Norway
Geophysical Research Letters 2015 DOI
Toru Takahashi,
Satonaori Nozawa,
Takuo T. Tsuda,
Yasunobu Ogawa,
Norihito Saito,
Takehiro Hidemori
m.fl.:
A case study on generation mechanisms of a sporadic sodium layer above Tromsø (69.6° N) during a night of high auroral activity
Satonori Nozawa,
Takuya D. Kawahara,
Norihito Saito,
Christopher Hall,
Takuo T. Tsuda,
Tetsuya Kawabata
m.fl.:
Variations of the neutral temperature and sodium density between 80 and 107 km above Tromsø during the winter of 2010-2011 by a new solid state sodium LIDAR
Journal of Geophysical Research (JGR): Space Physics 2014 DOI
Toru Takahashi,
Satonori Nozawa,
Masaki Tsutsumi,
Chris Hall,
Shin Suzuki,
Takuo T. Tsuda
m.fl.:
A case study of gravity wave dissipation in the polar MLT region using sodium LIDAR and radar data
Satonori Nozawa,
Chris Hall,
Masaki Tsutsumi,
Asgeir Brekke,
Yasunobu Ogawa,
T. T. Tsuda
m.fl.:
Mean winds, tides, and quasi-2 day waves above Bear Island
Journal of Atmospheric and Solar-Terrestrial Physics 2012 DOI
S. Oyama,
Asgeir Brekke,
T. T. Tsuda,
J Kurihara,
B. J. Watkins
:
Variance of the vertical ion speed measured with the European Incoherent Scatter (EISCAT) UHF radar in the polar lower ionosphere at Tromso, Norway
Journal of Geophysical Research (JGR): Space Physics 2011 DOI
T Tsuda,
Satonori Nozawa,
T Kawahara,
T Kawabata,
N Saito,
S Wada
m.fl.:
Fine structure of sporadic sodium layer observed with a sodium lidar at Tromsø, Norway
Satonori Nozawa,
Y Ogawa,
Shinichiro Oyama,
H Fujiwara,
T Tsuda,
Asgeir Brekke
m.fl.:
Tidal waves in the polar lower thermosphere observed using the EISCAT long run data set obtained in September 2005
Journal of Geophysical Research (JGR): Space Physics 2010 DOI
Sawako Maeda,
Yasunobu Ogawa,
Keisuke Hosokawa,
Satonori Nozawa,
Shinichiro Oyama,
Takuo Tsuda
m.fl.:
Ion heating in high-speed flow channel within the duskside cell of the polar cap ion convection under large IMF-B-y condition
Journal of Geophysical Research (JGR): Space Physics 2009 DOI
N. F. Blagoveshchenskaya,
H. C. Carlson,
V. A. Kornienko,
T. D. Borisova,
Michael T Rietveld,
T. K. Yeoman
m.fl.:
Phenomena induced by powerful HF pumping towards magnetic zenith with a frequency near the F-region critical frequency and the third electron gyro harmonic frequency
Annales Geophysicae 2009
Andrey Zalizovski,
Sergey Kashcheyev,
Yuri Yampolski,
Vladimir Galushko,
Vasyl Belyey,
B. Isham
m.fl.:
Self-scattering of a powerful HF radio wave on stimulated ionospheric turbulence
Radio Science 2009 DOI
S. Oyama,
B. J. Watkins,
S. Maeda,
H. Shinagawa,
Satonori Nozawa,
Yasunobu Ogawa
m.fl.:
Generation of the lower-thermospheric vertical wind estimated with the EISCAT KST radar at high latitudes during periods of moderate geomagnetic disturbance
Annales Geophysicae 2008
Chris Hall,
Asgeir Brekke,
Paul Cannon
:
Climatic trends in E-region critical frequency and virtual height above Tromsø (70°N, 10°E)
Annales Geophysicae 2007
Chris Hall,
Asgeir Brekke,
Alan Manson,
Chris Meek,
Satonori Nozawa
:
Trends in mesospheric turbulence at 70°N
Atmospheric Science Letters 2007 DOI
T. T. Tsuda,
Satonori Nozawa,
Asgeir Brekke,
Yasunobu Ogawa,
T. Motoba,
Ray Roble
m.fl.:
An ion drag contribution to the lower thermospheric wind in the summer polar region
Journal of Geophysical Research (JGR) 2007 DOI
Satonori Nozawa,
Y Ogawa,
Asgeir Brekke,
T Tsuda,
Chris Hall,
H Miyaoka
m.fl.:
EISCAT observational results during the DELTA campaign
Earth Planets and Space 2006
Arve Aksnes,
Johan Stadsnes,
Nikolai Østgaard,
G. A. Germany,
Kjellmar Oksavik,
Richard R. Vondrak
m.fl.:
Height profiles of the ionospheric electron density derived using space-based remote sensing of UV and X ray emissions and EISCAT radar data: A ground-truth experiment
Journal of Geophysical Research (JGR) 2006
E. D. Tereshchenko,
R. Yu. Yurik,
B. Z. Khudukon,
Michael T Rietveld,
Brett Cameron Isham,
Vasyl Belyey
m.fl.:
Directional features of the downshifted peak observed in HF-induced stimulated electromagnetic emission spectra obtained using an interferometer
Annales Geophysicae 2006
Asgeir Brekke
:
Arven etter Haldde-observatoriet
Naturen 2022 DOI
Asgeir Brekke
:
Da forskninga inntok Ny-Ålesund
Polarboken 2020
Asgeir Brekke
:
Hunting the Northern Lights
Journal of Geophysical Research (JGR): Space Physics 2019 DOI
Asgeir Brekke
:
Observatoriet på Haldde og nordlysforsking
Fra Fysikkens Verden 2018
Asgeir Brekke
:
Pioners of Electric Currents in Geospace
American Geophysical Union (AGU) 2018 DOI
Vasyl Belyey,
N.M. Schlatter,
Cesar La Hoz,
Unni Pia Løvhaug,
Asgeir Brekke
:
Interferometric radar imaging on Svalbard
2013
Asgeir Brekke
:
Under emballasjens tyranni
Nordlys 2012
Gunnar Bentdal,
Kaare Aksnes,
Asgeir Brekke,
Jan-Erik Solheim,
Øyvind Nordli,
Bjørn Ragnvald Pettersen
:
En himmelrommets fyrvokter
2012
Vasyl Belyey,
Cesar La Hoz,
Asgeir Brekke,
Hannah Vickers,
Unni Pia Løvhaug
:
EISCAT Aperture Synthesis Interferometer (EASI) as a test ground for the EISCAT_3D radar
2012
Asgeir Brekke
:
Om å knekke en paradegren
Nytt fra nord 2011
Asgeir Brekke
:
Nordlysbyen Alta
Altaposten 2011
Asgeir Brekke
:
Takk til Jagland og Nobelkomiteen
Aftenposten (morgenutg. : trykt utg.) 2011
Asgeir Brekke
:
Nils Angel Brekke - ein kunstmålar i Ny - Ålesund i 1926
Svalbardposten 2011
Asgeir Brekke
:
Japansk polarforskning 100 år
Nordlys 2011
Asgeir Brekke
:
Språklig forfall
Nordlys 2011
Asgeir Brekke
:
30 år med Nordområdeprosjektet EISCAT
Nytt fra nord 2011
Asgeir Brekke,
Magnar Gullikstad Johnsen
:
EISCAT - a genuine project in the Northern Region
2011
Asgeir Brekke
:
Nordområdeprosjektet EISCAT
Asgeir Brekke
:
Amatørastronomen Sigurd Einbu heidra med minnesmerke
Fra Fysikkens Verden 2009
Asgeir Brekke
:
Klima og kosmiske stråler
Forskning 2008
Asgeir Brekke
:
Om å knekke en paradegren
Nordlys 2008
Asgeir Brekke
:
The chairma´s section
EISCAT Annual Report 2008 2008
Vasyl Belyey,
B. Isham,
Michael T Rietveld,
Boris Khudukon,
R. Yu. Yurik,
E. D. Tereshchenko
m.fl.:
Interferometric Observations of Narrow-Band Features in Stimulated Electromagnetic Emission (SEE)
2007
Anders Johnsson,
Asgeir Brekke
:
Åpen forskningspublisering?
18. april 2006
A.C. Nilssen,
J.B. Ørbæk,
Asgeir Brekke
:
Arctic lights
2006
Asgeir Brekke
:
Forskningsaktiviteten på Svalbard
Svalbardposten 2006
Anders Johnsson,
Asgeir Brekke
:
Åpen forskningspublisering?
30. november 2005
Arve Aksnes,
Johan Stadsnes,
Nikolai Østgaard,
Glynn Germany,
Kjellmar Oksavik,
Richard R. Vondrak
m.fl.:
Height profiles of the ionospheric electron density derived from remote sensing of UV and X-ray emissions and measurements by the EISCAT radar: A comparison
2005
Arve Aksnes,
Johan Stadsnes,
Nikolai Østgaard,
G.A. Germany,
R.R. Vondrak,
K. Oksavik
m.fl.:
Ionospheric global conductance maps from remote sensing of UV and X-ray emissions
2005
Arve Aksnes,
Johan Stadsnes,
Asgeir Brekke,
Nikolai Østgaard,
G.A. Germany,
R.R. Vondrak
m.fl.:
Height profiles of the ionospheric electron density derived from remote sensing of UV- and X-ray emissions and measured by EISCAT radar
2005
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