Search Results - "KERTTULA, R"

An effect of the ionospheric Alfvén resonator on multiband Pc1 pulsations by Prikner, K., Mursula, K., Kangas, J., Kerttula, R., Feygin, F. Z.

“…On 2 December 1999, the magnetometer stations in northern Finland registered structured Pc1 activity simultaneously in three distinct frequency bands. Using…”
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Storm-time Pc1 activity at high and middle latitudes by Kerttula, R., Mursula, K., Pikkarainen, T., Kangas, J.

“…We study structured and unstructured Pc1 pulsations observed at a high‐latitude station (Sodankylä; L = 5.1) and a midlatitude station (Nurmijärvi; L = 3.3)…”
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O+-Reduced Models of the High Latitude Ionosphere and the Ionospheric Alfvén Resonator in Broadband Pc1 Events by Prikner, K, Kerttula, R

“…The significance of the O+-ion density altitude profile of the outer ionosphere for determination of the Ionospheric Alfvén Resonator (IAR) lower harmonic…”
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Effect of magnetic storm intensity on Pc1 activity at high and mid-latitudes by Kerttula, R, Mursula, K, Pikkarainen, T, Kangas, J

“…We study the properties of structured and unstructured Pc1 pulsations at a high-latitude station (Sodankylä; L=5.1) and a mid-latitude station (Nurmijärvi;…”
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New constraints on theories of Pc1 pearl formation by Mursula, K., Kangas, J., Kerttula, R., Pikkarainen, T., Guglielmi, A., Pokhotelov, O., Potapov, A.

“…In this paper we study structured Pc1 pulsations (also called Pc1 pearls) observed on ground, concentrating on the relation between the pearl repetition period…”
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Energetic particle acceleration during a major magnetic storm by Kerttula, R., Mursula, K., Asikainen, T., Friedel, R., Baker, D., Søraas, F., Fennell, J.F., Blake, J.B., Grande, M.

“…We study the global properties of energetic (>30 keV) particles during the main and early recovery phase of a major magnetic storm of March 31, 2001, using…”
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Non-stationary Alfvén resonator: new results on Pc1 pearls and IPDP events by Mursula, K., Prikner, K., Feygin, F.Z., Bräysy, T., Kangas, J., Kerttula, R., Pollari, P., Pikkarainen, T., Pokhotelov, O.A.

“…We analyse a Pc1 pearl event observed by the Finnish search-coil magnetometer network on 15 December 1984, which subsequently developed into a structured IPDP…”
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Effect of heavy ions on ponderomotive forces due to ion cyclotron waves by Feygin, F. Z., Pokhotelov, O. A., Pokhotelov, D. O., Mursula, K., Kangas, J., Bräysy, T., Kerttula, R.

“…We study ponderomotive effects induced by the electromagnetic ion cyclotron (EMIC) waves in the Pel frequency band (0.2 to 5.0 Hz) in a two‐ion (H+ and one…”
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Numerical Simulation of the High-Latitude Non-Stationary Ionospheric Alfvén Resonator During an IPDP Event by Prikner, K, Mursula, K, Kangas, J, Feygin, F Z, Kerttula, R

“…The ionospheric Alfvén resonator (IAR) was numerically simulated under non-stationary ionospheric and magnetospheric conditions of the IPDP event of December…”
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Non-stationary Alfvén resonator: vertical profiles of wave characteristics by Prikner, K., Mursula, K., Feygin, F.Z., Kangas, J., Kerttula, R., Pikkarainen, T., Pokhotelov, O.A., Vagner, V.

“…A Pc1/IPDP event recorded by the Finnish search coil magnetometers on 15 December 1984 was analyzed in a companion paper (Mursula et al., 2000. Non-stationary…”
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Bronchiolitis in a patient with talcosis by Reijula, K, Pääkkö, P, Kerttula, R, Taikina-Aho, O, Tuuponen, T, Hassi, J

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New constraints on theories of Pc1 pearl formation by Mursula, K, Kangas, J, Kerttula, R, Pikkarainen, T, Guglielmi, A, Pokhotelov, O, Potapov, A

“…We study ground-observed structured Pc1 pulsations ('Pc1 pearls'), noting the relation between the pearl repetition period tau and the wave frequency f…”
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Cluster/rapid energetic electron observations at the dayside magnetospheric boundary by Mursula, K., Kerttula, R., Asikainen, T., Friedel, R., Vaivads, A., Søraas, F., Grande, M., Carter, M., Daly, P.W., Fritz, T.A., Fennell, J.F., Balogh, A.

“…We study the energetic electrons by the Cluster-II Rapid instrument on a dayside high-latitude pass on the night between March 21/22, 2001. The Cluster…”
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Effect of heavy ions on ponderomotive forces due to ion cyclotron waves by Feygin, F Z, Pokhotelov, O A, Pokhotelov, D O, Mursula, K, Kangas, J, Braysy, T, Kerttula, R

“…We study ponderomotive effects induced by the electromagnetic ion cyclotron (EMIC) waves in the Pc1 frequency band in a two-ion plasma. Near the dayside…”
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An effect of the ionospheric Alfvén resonator on multiband Pc1 pulsations by PRIKNER, K, MURSULA, K, KANGAS, J, KERTTULA, R, FEYGIN, F. Z

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Cancer risk among workers at a copper/nickel smelter and nickel refinery in Finland by KARJALAINEN, S, KERTTULA, R, PUKKALA, E

“…A total of 1,388 workers employed for at least 3 months at a copper/nickel smelter and nickel refinery were followed up for cancer from 1953 to 1987 through…”
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New constraints on theories of Pc1 pearl formation by MURSULA, K, KANGAS, J, KERTTULA, R, PIKKARAINEN, T, GUGLIELMI, A, POKHOTELOV, O, POTAPOV, A

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Effect of heavy ions on ponderomotive forces due to ion cyclotron waves by FEYGIN, F. Z, POKHOTELOV, O. A, POKHOTELOV, D. O, MURSULA, K, KANGAS, J, BRÄYSY, T, KERTTULA, R

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Bronchiolitis in a patient with talcosis by Reijula, K, Paeaekkoe, P, Kerttula, R, Taikina-Aho, O, Tuuponen, T, Hassi, J

“…Despite environmental monitoring, widely used occupational standards, and an increasing knowledge of the causative agents of occupational respiratory diseases,…”
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