Real-time imaging of density ducts between the plasmasphere and ionosphere
Ionization of the Earth's atmosphere by sunlight forms a complex, multilayered plasma environment within the Earth's magnetosphere, the innermost layers being the ionosphere and plasmasphere. The plasmasphere is believed to be embedded with cylindrical density structures (ducts) aligned al...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
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American Geophysical Union
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/6774 |
| _version_ | 1848745174042148864 |
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| author | Loi, S. Murphy, T. Cairns, I. Menk, F. Waters, C. Erickson, P. Trott, C. Hurley-Walker, Natasha Morgan, John Lenc, E. Offringa, A. Bell, M. Ekers, R. Gaensler, B. Lonsdale, C. Feng, L. Hancock, Paul Kaplan, D. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Deshpande, A. Greenhill, L. Hazelton, B. Johnston-Hollitt, M. Mcwhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Wayth, Randall Webster, R. Williams, A. Williams, C. |
| author_facet | Loi, S. Murphy, T. Cairns, I. Menk, F. Waters, C. Erickson, P. Trott, C. Hurley-Walker, Natasha Morgan, John Lenc, E. Offringa, A. Bell, M. Ekers, R. Gaensler, B. Lonsdale, C. Feng, L. Hancock, Paul Kaplan, D. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Deshpande, A. Greenhill, L. Hazelton, B. Johnston-Hollitt, M. Mcwhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Wayth, Randall Webster, R. Williams, A. Williams, C. |
| author_sort | Loi, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Ionization of the Earth's atmosphere by sunlight forms a complex, multilayered plasma environment within the Earth's magnetosphere, the innermost layers being the ionosphere and plasmasphere. The plasmasphere is believed to be embedded with cylindrical density structures (ducts) aligned along the Earth's magnetic field, but direct evidence for these remains scarce. Here we report the first direct wide-angle observation of an extensive array of field-aligned ducts bridging the upper ionosphere and inner plasmasphere, using a novel ground-based imaging technique. We establish their heights and motions by feature tracking and parallax analysis. The structures are strikingly organized, appearing as regularly spaced, alternating tubes of overdensities and underdensities strongly aligned with the Earth's magnetic field. These findings represent the first direct visual evidence for the existence of such structures. |
| first_indexed | 2025-11-14T06:13:10Z |
| format | Journal Article |
| id | curtin-20.500.11937-6774 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:13:10Z |
| publishDate | 2015 |
| publisher | American Geophysical Union |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-67742019-04-03T06:03:18Z Real-time imaging of density ducts between the plasmasphere and ionosphere Loi, S. Murphy, T. Cairns, I. Menk, F. Waters, C. Erickson, P. Trott, C. Hurley-Walker, Natasha Morgan, John Lenc, E. Offringa, A. Bell, M. Ekers, R. Gaensler, B. Lonsdale, C. Feng, L. Hancock, Paul Kaplan, D. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Deshpande, A. Greenhill, L. Hazelton, B. Johnston-Hollitt, M. Mcwhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Wayth, Randall Webster, R. Williams, A. Williams, C. Ionization of the Earth's atmosphere by sunlight forms a complex, multilayered plasma environment within the Earth's magnetosphere, the innermost layers being the ionosphere and plasmasphere. The plasmasphere is believed to be embedded with cylindrical density structures (ducts) aligned along the Earth's magnetic field, but direct evidence for these remains scarce. Here we report the first direct wide-angle observation of an extensive array of field-aligned ducts bridging the upper ionosphere and inner plasmasphere, using a novel ground-based imaging technique. We establish their heights and motions by feature tracking and parallax analysis. The structures are strikingly organized, appearing as regularly spaced, alternating tubes of overdensities and underdensities strongly aligned with the Earth's magnetic field. These findings represent the first direct visual evidence for the existence of such structures. 2015 Journal Article http://hdl.handle.net/20.500.11937/6774 10.1002/2015GL063699 American Geophysical Union fulltext |
| spellingShingle | Loi, S. Murphy, T. Cairns, I. Menk, F. Waters, C. Erickson, P. Trott, C. Hurley-Walker, Natasha Morgan, John Lenc, E. Offringa, A. Bell, M. Ekers, R. Gaensler, B. Lonsdale, C. Feng, L. Hancock, Paul Kaplan, D. Bernardi, G. Bowman, J. Briggs, F. Cappallo, R. Deshpande, A. Greenhill, L. Hazelton, B. Johnston-Hollitt, M. Mcwhirter, S. Mitchell, D. Morales, M. Morgan, E. Oberoi, D. Ord, Stephen Prabu, T. Shankar, N. Srivani, K. Subrahmanyan, R. Tingay, Steven Wayth, Randall Webster, R. Williams, A. Williams, C. Real-time imaging of density ducts between the plasmasphere and ionosphere |
| title | Real-time imaging of density ducts between the plasmasphere and ionosphere |
| title_full | Real-time imaging of density ducts between the plasmasphere and ionosphere |
| title_fullStr | Real-time imaging of density ducts between the plasmasphere and ionosphere |
| title_full_unstemmed | Real-time imaging of density ducts between the plasmasphere and ionosphere |
| title_short | Real-time imaging of density ducts between the plasmasphere and ionosphere |
| title_sort | real-time imaging of density ducts between the plasmasphere and ionosphere |
| url | http://hdl.handle.net/20.500.11937/6774 |