S. Ullaland

发表

Magnetospheric and ionospheric response to a substorm : Geotail HEP-LD and Polar PIXIE observations

G. Parks, N. Østgaard, M. Brittnacher, 1999 .

Radiation belt proton contribution to substorm structure and dynamics

H. Singer, A. Korth, K. Torkar, 1998 .

On the development of a magnetospheric substorm influenced by a storm sudden commencement: Ground, balloon, and satellite observations

I. B. Iversen, A. Roux, L. Block, 1993 .

RAPID – The Imaging Energetic Particle Spectrometer on Cluster

W. I. Axford, W. Ip, F. Gliem, 1993 .

Electron and Proton wide-Angle Spectrometer (EPAS) on the CRRES spacecraft

R. Koga, B. Wilken, A. Korth, 1992 .

Coordinated balloon‐satellite observations of energetic particles at the onset of a magnetospheric substorm

I. B. Iversen, J. Niskanen, L. Block, 1982 .

Field‐aligned beams of energetic electrons (16 keV ≤ E ≤ 80 keV) observed at geosynchronous orbit at substorm onsets

A. Roux, A. Pedersen, A. Korth, 1988 .

On the extension of auroral-zone X-ray microbursts

J. Stadsnes, J. Bjordal, S. Ullaland, 1966 .

Electron precipitation associated with a sudden commencement of a geomagnetic storm

K. Wilhelm, W. Riedler, J. Kangas, 1970 .

Geoactivity at X=−200 RE in the tail-the trailing phase of a solar wind high speed sector

B. Wilken, T. Doke, S. Kokubun, 1998 .

Long-Period Pulsations of Auroral-Zone X-Rays

S. Ullaland, H. Trefall, 1964, Nature.

Substorm activity on January 11, 1994: Geotail observations in the distant tail during the leading phase of a corotating interaction region

B. Wilken, G. Reeves, T. Doke, 1998 .

The Energetic Particle Spectrometer Hep onboard the Geotail Spacecraft

T. Shino, N. Hasebe, T. Takashima, 1994 .

Propagation velocities and dimensions of plasmoid structures in the near‐Earth magnetotail

F. Søraas, S. Ullaland, Stein Håland, 1999 .

Energetic oxygen ion bursts in the distant magnetotail as a product of intense substorms: Three case studies

B. Wilken, J. Woch, Donald J. Williams, 1998 .

Observations of the tailward streamingiIons in the near-earth tail during a magnetospheric substorm

G. Reeves, B. Wilken, T. Doke, 1998 .

X-line formation in the near-earth magnetotail during magnetospheric substorms

B. Wilken, G. Reeves, T. Doke, 1998 .

Geotail observations of energetic ion species and magnetic field in plasmoid-like structures in the course

T. Mukai, Q. Zong, S. Livi, 1997 .

Energetic neutral atoms in the outer magnetosphere: An upper flux limit obtained with the HEP‐LD Spectrometer on board GEOTAIL

A. Milillo, I. Daglis, S. Orsini, 1997 .

Tailward flowing energetic oxygen ion bursts associated with multiple flux ropes in the distant magnetotail: GEOTAil observations

I. Daglis, Q. Zong, S. Livi, 1995 .

Simultaneous observations of a pulsation event from the ground, with balloons and with a geostationary satellite on August 12, 1978

I. B. Iversen, G. Haerendel, R. Grard, 1984 .

On the morphology of auroral-zone X-ray events—II. Events during the early morning hours

P. Tanskanen, K. Wilhelm, G. Kremser, 1973 .

Simultaneous balloon measurements of auroral X-rays during slowly varying ionospheric absorption events

G. Kremser, J. Stadsnes, S. Ullaland, 1968 .

Morphology and fine time structure of an early-morning electron precipitation event

K. Bronstad, T. Pytte, J. Stadsnes, 1975 .

Investigation of the conjugacy between auroral breakup and energetic electron injection

A. Korth, L. Lazutin, I. A. Kornilov, 2000 .

Different phases of a magnetospheric substorm on June 23, 1979

I. B. Iversen, K. Glassmeier, L. Block, 1987 .

Energetic Electron Precipitation During a Magnetospheric Substorm and Its Relationship to Wave Particle Interaction

I. B. Iversen, E. Amata, L. Block, 1986 .

On the origin of electron precipitation in the auroral zone related to the onset of magnetospheric substorms

I. B. Iversen, L. Block, A. Korth, 1981 .

A study of the interaction of VLF waves with equatorial electrons and its relationship to auroral X-rays in the morning sector

I. B. Iversen, L. Block, A. Korth, 1987 .

On the morphology of auroral-zone X-ray events—I Dynamics of midnight events

K. Saeger, P. Tanskanen, G. Kremser, 1971 .

On the relationship between cosmic noise absorption and auroral X-rays—a case study

S. Ullaland, K. Olafsson, 1989 .

Large-scale auroral-zone electron precipitation event, briefly interrupted during a negative magnetic impulse

K. Bronstad, T. Pytte, J. Stadsnes, 1974 .

Pulsating phenomena of auroral-zone X-rays associated with quasi-periodic VLF emissions and Pc 3 magnetic pulsations.

T. Ono, J. Holtet, R. Pellinen, 1985 .

Balloon measurements in future exploration of auroral zone phenomena

S. Ullaland, 1985 .

Dynamics of the plasma sheet in the dawn sector of the magnetosphere: Observations from CRRES

D. Baker, J. Fennell, R. Friedel, 1994 .

Observations of large-scale coherent pulsating electron precipitation events in the auroral zone, accompanied by geomagnetic continuous pulsations

G. Kremser, S. Ullaland, H. Trefall, 1967 .