Search results
- 1.0571649 - GFÚ 2024 RIV DE eng J - Journal Article
Hejda, Pavel - Valach, F. - Revallo, M.
Historical geomagnetic observations from Prague observatory (since 1839) and their contribution to geomagnetic research.
History of Geo-and Space Sciences. Roč. 14, č. 1 (2023), s. 51-60. ISSN 2190-5010. E-ISSN 2190-5029
Institutional support: RVO:67985530
Keywords : geomagnetic observations * historical records * bifilar magnetometer
OECD category: Physical geography
Impact factor: 0.3, year: 2022
Method of publishing: Open access
https://hgss.copernicus.org/articles/14/51/2023/
Permanent Link: https://hdl.handle.net/11104/0342707File Download Size Commentary Version Access Hejda2023HGSS.pdf 2 2.7 MB Publisher’s postprint open-access - 2.0552926 - GFÚ 2024 RIV GB eng J - Journal Article
Hejda, Pavel - Revallo, M. - Valach, F.
Magnetic storm and term-day observations at the Prague observatory Clementinum in the mid-19th century.
Geoscience Data Journal. Roč. 10, č. 1 (2023), s. 39-44. ISSN 2049-6060. E-ISSN 2049-6060
Institutional support: RVO:67985530
Keywords : historical data * horizontal intensity * magnetic declination * magnetic storm * term-day observations
OECD category: Physical geography
Impact factor: 3.2, year: 2022
Method of publishing: Open access
https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/gdj3.141
Permanent Link: http://hdl.handle.net/11104/0327988File Download Size Commentary Version Access Hejda2023GeoscienceDataJournal.pdf 1 219.5 KB Publisher’s postprint open-access - 3.0545650 - GFÚ 2022 RIV DE eng J - Journal Article
Hejda, Pavel - Valach, F. - Revallo, M.
The geomagnetic data of the Clementinum observatory in Prague since 1839.
Annales Geophysicae. Roč. 39, č. 3 (2021), s. 439-454. ISSN 0992-7689. E-ISSN 1432-0576
Institutional support: RVO:67985530
Keywords : geomagnetic observatory * historical records * data processing
OECD category: Physical geography
Impact factor: 2.190, year: 2021
Method of publishing: Open access
https://angeo.copernicus.org/articles/39/439/2021/
Permanent Link: http://hdl.handle.net/11104/0322322File Download Size Commentary Version Access Hejda2021Angeo.pdf 2 2 MB Publisher’s postprint open-access - 4.0506249 - GFÚ 2020 RIV FR eng J - Journal Article
Valach, F. - Hejda, Pavel - Revallo, M. - Bochníček, Josef
Possible role of auroral oval-related currents in two intense magnetic storms recorded by old mid-latitude observatories Clementinum and Greenwich.
Journal of Space Weather and Space Climate. Roč. 9, May (2019), č. článku A11. ISSN 2115-7251. E-ISSN 2115-7251
R&D Projects: GA ČR(CZ) GA17-19877S
Institutional support: RVO:67985530
Keywords : storm * substorm * geomagnetism * extreme events * historical records
OECD category: Environmental sciences (social aspects to be 5.7)
Impact factor: 3.095, year: 2019
Method of publishing: Open access
https://www.swsc-journal.org/articles/swsc/abs/2019/01/swsc180073/swsc180073.html
Permanent Link: http://hdl.handle.net/11104/0297554File Download Size Commentary Version Access Valach2019JSWSC.pdf 7 458.5 KB Publisher’s postprint open-access - 5.0472536 - GFÚ 2017 RIV SK eng J - Journal Article
Revallo, M. - Valach, F. - Hejda, Pavel - Bochníček, Josef
Modeling of CME and CIR driven geomagnetic storms by means of artificial neural networks.
Contributions to Geophysics & Geodesy. Roč. 45, č. 1 (2015), s. 53-65. ISSN 1335-2806
Institutional support: RVO:67985530
Keywords : space weather * coronal mass ejections * corotating interaction regions * geomagnetic storms * magnetosphere
OECD category: Physical geography
https://www.degruyter.com/downloadpdf/j/congeo.2015.45.issue-1/congeo-2015-0013/congeo-2015-0013.pdf
Permanent Link: http://hdl.handle.net/11104/0269826File Download Size Commentary Version Access Revallo2015CGG.pdf 0 743.8 KB Publisher’s postprint open-access - 6.0464432 - GFÚ 2017 RIV GB eng J - Journal Article
Valach, F. - Hejda, Pavel - Revallo, M. - Bochníček, Josef - Váczyová, M.
Testing the interactive computer method (IM) for producing K indices with the data of the Hurbanovo and Budkov magnetic observatories.
Journal of Atmospheric and Solar-Terrestrial Physics. Roč. 147, September (2016), s. 90-97. ISSN 1364-6826. E-ISSN 1879-1824
R&D Projects: GA MŠMT(CZ) LM2015079
Institutional support: RVO:67985530
Keywords : hand-scaled K index * computer produced K index * geomagnetic activity
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 1.326, year: 2016
Permanent Link: http://hdl.handle.net/11104/0263302 - 7.0433347 - GFÚ 2015 RIV GB eng J - Journal Article
Revallo, M. - Valach, F. - Hejda, Pavel - Bochníček, Josef
A neural network Dst index model driven by input time histories of the solar wind–magnetosphere interaction.
Journal of Atmospheric and Solar-Terrestrial Physics. 110-111, April (2014), s. 9-14. ISSN 1364-6826. E-ISSN 1879-1824
R&D Projects: GA MŠMT OC09070
Institutional support: RVO:67985530
Keywords : solar wind * magnetosphere * geomagnetic storm * Dst index * artificial neural network
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 1.474, year: 2014
Permanent Link: http://hdl.handle.net/11104/0237562 - 8.0430279 - GFÚ 2015 RIV GB eng J - Journal Article
Valach, F. - Bochníček, Josef - Hejda, Pavel - Revallo, M.
Strong geomagnetic activity forecast by neural networks under dominant southern orientation of the interplanetary magnetic field.
Advances in Space Research. Roč. 53, č. 4 (2014), s. 589-598. ISSN 0273-1177. E-ISSN 1879-1948
R&D Projects: GA AV ČR(CZ) IAA300120608; GA MŠMT OC09070
Institutional support: RVO:67985530
Keywords : geomagnetic activity * interplanetary magnetic field * artificial neural network * ejection of coronal mass * X-ray flares
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 1.358, year: 2014
Permanent Link: http://hdl.handle.net/11104/0235237 - 9.0365304 - GFÚ 2012 RIV GB eng J - Journal Article
Valach, F. - Revallo, M. - Hejda, Pavel - Bochníček, Josef
Predictions of SEP events by means of a linear filter and layer-recurrent neural network.
Acta Astronautica. Roč. 69, č. 9-10 (2011), s. 758-766. ISSN 0094-5765. E-ISSN 1879-2030
R&D Projects: GA AV ČR(CZ) IAA300120608; GA MŠMT OC09070
Grant - others:VEGA(SK) 2/0015/11; VEGA(SK) 2/0022/11
Institutional research plan: CEZ:AV0Z30120515
Keywords : coronal mass ejection * X-ray flare * solar energetic particles * artificial neural network
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 0.614, year: 2011
Permanent Link: http://hdl.handle.net/11104/0200577 - 10.0330299 - GFÚ 2010 RIV US eng J - Journal Article
Valach, F. - Revallo, M. - Bochníček, Josef - Hejda, Pavel
Solar energetic particle flux enhancement as a predictor of geomagnetic activity in a neural network-based model.
Space Weather-the International Journal of Research and Applications. Roč. 7, April (2009), S04004/1-S04004/7. E-ISSN 1542-7390
R&D Projects: GA AV ČR(CZ) IAA300120608; GA AV ČR 1QS300120506
Institutional research plan: CEZ:AV0Z30120515
Keywords : neural networks * coronal mass ejections * energetic particles * flares * radio emissions * magnetic storms
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 1.845, year: 2009
Permanent Link: http://hdl.handle.net/11104/0176122