Observations of 50-MHz type-II coherent echoes from within the polar cap
Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Kustov, A. V. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1994 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag Berlin Heidelberg 1994 |
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| Übergeordnetes Werk: |
Enthalten in: Annales geophysicae - Springer-Verlag, 1983, 12(1994), 8 vom: Aug., Seite 765-774 |
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| Übergeordnetes Werk: |
volume:12 ; year:1994 ; number:8 ; month:08 ; pages:765-774 |
| Links: |
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| DOI / URN: |
10.1007/s00585-994-0765-1 |
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| Katalog-ID: |
OLC2071777581 |
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| 245 | 1 | 0 | |a Observations of 50-MHz type-II coherent echoes from within the polar cap |
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| 500 | |a © Springer-Verlag Berlin Heidelberg 1994 | ||
| 520 | |a Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. | ||
| 650 | 4 | |a Previous Experiment | |
| 650 | 4 | |a Radial Velocity | |
| 650 | 4 | |a Lower Latitude | |
| 650 | 4 | |a Spectral Width | |
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| 700 | 1 | |a Koehler, J. A. |4 aut | |
| 700 | 1 | |a Sofko, G. J. |4 aut | |
| 700 | 1 | |a Danskin, D. W. |4 aut | |
| 700 | 1 | |a McKibben, M. J. |4 aut | |
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10.1007/s00585-994-0765-1 doi (DE-627)OLC2071777581 (DE-He213)s00585-994-0765-1-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 16,13 ssgn Kustov, A. V. verfasserin aut Observations of 50-MHz type-II coherent echoes from within the polar cap 1994 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1994 Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. Previous Experiment Radial Velocity Lower Latitude Spectral Width Radar Wave Koehler, J. A. aut Sofko, G. J. aut Danskin, D. W. aut McKibben, M. J. aut Enthalten in Annales geophysicae Springer-Verlag, 1983 12(1994), 8 vom: Aug., Seite 765-774 (DE-627)129620742 (DE-600)246086-5 (DE-576)01512696X 0992-7689 nnns volume:12 year:1994 number:8 month:08 pages:765-774 https://doi.org/10.1007/s00585-994-0765-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_267 GBV_ILN_601 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4027 GBV_ILN_4038 GBV_ILN_4046 GBV_ILN_4103 GBV_ILN_4307 GBV_ILN_4309 GBV_ILN_4317 AR 12 1994 8 08 765-774 |
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10.1007/s00585-994-0765-1 doi (DE-627)OLC2071777581 (DE-He213)s00585-994-0765-1-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 16,13 ssgn Kustov, A. V. verfasserin aut Observations of 50-MHz type-II coherent echoes from within the polar cap 1994 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1994 Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. Previous Experiment Radial Velocity Lower Latitude Spectral Width Radar Wave Koehler, J. A. aut Sofko, G. J. aut Danskin, D. W. aut McKibben, M. J. aut Enthalten in Annales geophysicae Springer-Verlag, 1983 12(1994), 8 vom: Aug., Seite 765-774 (DE-627)129620742 (DE-600)246086-5 (DE-576)01512696X 0992-7689 nnns volume:12 year:1994 number:8 month:08 pages:765-774 https://doi.org/10.1007/s00585-994-0765-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_267 GBV_ILN_601 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4027 GBV_ILN_4038 GBV_ILN_4046 GBV_ILN_4103 GBV_ILN_4307 GBV_ILN_4309 GBV_ILN_4317 AR 12 1994 8 08 765-774 |
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10.1007/s00585-994-0765-1 doi (DE-627)OLC2071777581 (DE-He213)s00585-994-0765-1-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 16,13 ssgn Kustov, A. V. verfasserin aut Observations of 50-MHz type-II coherent echoes from within the polar cap 1994 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1994 Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. Previous Experiment Radial Velocity Lower Latitude Spectral Width Radar Wave Koehler, J. A. aut Sofko, G. J. aut Danskin, D. W. aut McKibben, M. J. aut Enthalten in Annales geophysicae Springer-Verlag, 1983 12(1994), 8 vom: Aug., Seite 765-774 (DE-627)129620742 (DE-600)246086-5 (DE-576)01512696X 0992-7689 nnns volume:12 year:1994 number:8 month:08 pages:765-774 https://doi.org/10.1007/s00585-994-0765-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_267 GBV_ILN_601 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4027 GBV_ILN_4038 GBV_ILN_4046 GBV_ILN_4103 GBV_ILN_4307 GBV_ILN_4309 GBV_ILN_4317 AR 12 1994 8 08 765-774 |
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10.1007/s00585-994-0765-1 doi (DE-627)OLC2071777581 (DE-He213)s00585-994-0765-1-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 16,13 ssgn Kustov, A. V. verfasserin aut Observations of 50-MHz type-II coherent echoes from within the polar cap 1994 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1994 Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. Previous Experiment Radial Velocity Lower Latitude Spectral Width Radar Wave Koehler, J. A. aut Sofko, G. J. aut Danskin, D. W. aut McKibben, M. J. aut Enthalten in Annales geophysicae Springer-Verlag, 1983 12(1994), 8 vom: Aug., Seite 765-774 (DE-627)129620742 (DE-600)246086-5 (DE-576)01512696X 0992-7689 nnns volume:12 year:1994 number:8 month:08 pages:765-774 https://doi.org/10.1007/s00585-994-0765-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_267 GBV_ILN_601 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4027 GBV_ILN_4038 GBV_ILN_4046 GBV_ILN_4103 GBV_ILN_4307 GBV_ILN_4309 GBV_ILN_4317 AR 12 1994 8 08 765-774 |
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10.1007/s00585-994-0765-1 doi (DE-627)OLC2071777581 (DE-He213)s00585-994-0765-1-p DE-627 ger DE-627 rakwb eng 550 VZ 550 VZ 16,13 ssgn Kustov, A. V. verfasserin aut Observations of 50-MHz type-II coherent echoes from within the polar cap 1994 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Berlin Heidelberg 1994 Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. Previous Experiment Radial Velocity Lower Latitude Spectral Width Radar Wave Koehler, J. A. aut Sofko, G. J. aut Danskin, D. W. aut McKibben, M. J. aut Enthalten in Annales geophysicae Springer-Verlag, 1983 12(1994), 8 vom: Aug., Seite 765-774 (DE-627)129620742 (DE-600)246086-5 (DE-576)01512696X 0992-7689 nnns volume:12 year:1994 number:8 month:08 pages:765-774 https://doi.org/10.1007/s00585-994-0765-1 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_24 GBV_ILN_40 GBV_ILN_47 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_267 GBV_ILN_601 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2018 GBV_ILN_4012 GBV_ILN_4027 GBV_ILN_4038 GBV_ILN_4046 GBV_ILN_4103 GBV_ILN_4307 GBV_ILN_4309 GBV_ILN_4317 AR 12 1994 8 08 765-774 |
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Enthalten in Annales geophysicae 12(1994), 8 vom: Aug., Seite 765-774 volume:12 year:1994 number:8 month:08 pages:765-774 |
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observations of 50-mhz type-ii coherent echoes from within the polar cap |
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Observations of 50-MHz type-II coherent echoes from within the polar cap |
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Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. © Springer-Verlag Berlin Heidelberg 1994 |
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Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. © Springer-Verlag Berlin Heidelberg 1994 |
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Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m $ s^{−1} $ and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction. © Springer-Verlag Berlin Heidelberg 1994 |
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