The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica

Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the magnetic field at a given location. Unfortunately, on the Antarctic continent t...

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Main Authors: Meloni, A., Cafarella, L., De Michelis, P., Tozzi, R.
Other Authors: Meloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Cafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, De Michelis, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Tozzi, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
Format: Article in Journal/Newspaper
Language:English
Published: USGS 2007
Subjects:
the geomagnetic field and its time variations
secular variation and geomagnetic jerks in Antarctica
geomagnetic observatories
sign changes of the secular acceleration maps
04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals
Antarctic
The Antarctic
Antarc*
Antarctica
Online Access:http://hdl.handle.net/2122/3167
http://pubs.usgs.gov/of/2007/1047/srp/srp071/index.html
https://doi.org/10.3133/of2007-1047.srp071
id ftingv:oai:www.earth-prints.org:2122/3167
record_format openpolar
institution Open Polar
collection Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
op_collection_id ftingv
language English
topic the geomagnetic field and its time variations
secular variation and geomagnetic jerks in Antarctica
geomagnetic observatories
sign changes of the secular acceleration maps
04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals
spellingShingle the geomagnetic field and its time variations
secular variation and geomagnetic jerks in Antarctica
geomagnetic observatories
sign changes of the secular acceleration maps
04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals
Meloni, A.
Cafarella, L.
De Michelis, P.
Tozzi, R.
The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
topic_facet the geomagnetic field and its time variations
secular variation and geomagnetic jerks in Antarctica
geomagnetic observatories
sign changes of the secular acceleration maps
04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals
description Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the magnetic field at a given location. Unfortunately, on the Antarctic continent the distribution of the permanent ground- based observatories does not permit a uniform coverage of the examined area. Furthermore, the magnetic records are characterized by intense external disturbances and noise that make the analysis of the magnetic field difficult. To improve our knowledge of the secular variation and detect the presence of secular variation impulses (geomagnetic jerks) in Antarctica, we use both observatory data and the CM4 quiet time magnetic field model. In particular CM4 improves our knowledge of geomagnetic jerks over Antarctica through the study of the sign changes of the secular acceleration maps. Published on line only 3.4. Geomagnetismo N/A or not JCR open
author2 Meloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
Cafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
De Michelis, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
Tozzi, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
format Article in Journal/Newspaper
author Meloni, A.
Cafarella, L.
De Michelis, P.
Tozzi, R.
author_facet Meloni, A.
Cafarella, L.
De Michelis, P.
Tozzi, R.
author_sort Meloni, A.
title The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
title_short The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
title_full The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
title_fullStr The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
title_full_unstemmed The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
title_sort contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in antarctica
publisher USGS
publishDate 2007
url http://hdl.handle.net/2122/3167
http://pubs.usgs.gov/of/2007/1047/srp/srp071/index.html
https://doi.org/10.3133/of2007-1047.srp071
geographic Antarctic
The Antarctic
geographic_facet Antarctic
The Antarctic
genre Antarc*
Antarctic
Antarctica
genre_facet Antarc*
Antarctic
Antarctica
op_relation USGS Open-File Report 2007-1047, Short Research Paper 071
/ Short Research Paper 071 (2007)
Alexandrescu, M., D. Gibert, G. Hulot, J.L. Le Mouël, and G. Saracco (1996), Worldwide wavelet analysis of geomagnetic jerks, J. Geophys. Res., 101, 21975-21994. Bloxham, J., S. Zatman and M. Dumberry (2002), The origin of geomagnetic jerks, Nature, 420, 65-68. Chambodut, A, and M. Mandea (2005), Evidence for geomagnetic jerks in comprehensive models, Earth Planets Space, 57, 139-149. Chambodut, A, M. Mandea, and C. Eymin (2005), Geomagnetic jerks detected from comprehensive magnetic field models, Geophys. Res. Abstracts, 7, 05165. Courtillot, V., J. Ducruix, and J.L. Le Mouël (1978), Sur une accélération récente de la variation séculaire du champ magnétique terrestre, C.R. Acad. Sci. Ser. D, 287, 1095-1098. De Michelis, P., L. Cafarella, and A. Meloni (2000), A global analysis of the 1991 geomagnetic jerk, Geophys. J. Int., 143, 545-556. De Michelis, P., and R. Tozzi (2005), A local intermittency measure (LIM) approach to the detection of geomagnetic jerks, Earth Planet. Sci. Lett., 235, 261-272. De Santis, A., R. Tozzi, and L. Gaya-Piqué (2004), Information Content and K-entropy of the Present Earth Magnetic Field, Earth Planet. Sci. Lett., 218, 269-275. Gubbins, D., A. L. Jones, and C.C. Finlay (2006), Fall in Earth’s magnetic field is erratic, Science, 312, 900-902. Kerridge, D. (2001), Intermagnet: worldwide near-real-time geomagnetic observatory data, Proceedings of the Workshop on Space Weather, ESTEC. Lepidi, S., L. Cafarella, P. Francia, A. Meloni, P. Palangio, and J. J. Schott (2003), Low frequency geomagnetic field variations at Dome C (Antarctica), Annales Geophysicae, 21, 923–932. Macmillan, S. (1996), A geomagnetic jerk for the early 1990’s, Earth Planet. Sci. Lett., 137, 189-192. Malin, S.R.C., and B.M. Hodder (1982), Was the 1970 geomagnetic jerk of internal or external origin?, Nature, 296, 726-728. MacMillan, S. and S. Maus (2005), International Geomagnetic Reference Field – the tenth generation, Earth Planets and Space, 57, 1135-1140. Mandea, M., E. Bellanger, and J.L. Le Mouël (2000), A geomagnetic jerk for the end of the 20th century?, Earth Planet. Sci. Lett., 183, 369- 373. Mandea, M., and B. Langlais (2002), Observatory crustal magnetic biases during MAGSAT and Ørsted satellite missions, Geophys. Res. Lett., 29, 10.1029/2001GL013693. Meloni, A., L. R. Gaya-Piqué, P. De Michelis, and A. De Santis (2006), Some recent characteristics of geomagnetic secular variations in Antarctica, from: Fütterer D.K. at al. (eds) Antarctica: Contributions to global earth sciences, Spring-Verlag, Berlin Heidelberg New York, 377-382. Nagao, H., T. Iyemori, T. Higuchi, and T. Araki (2003), Lower mantle conductivity anomalies estimated from geomagnetic jerks, J. Geophys. Res., 108, 2254, doi:10.1029/2002JB001786. Olsen, N., and M. Mandea (2007), Investigation of a secular variation impulse using satellite data: the 2003 geomagnetic jerk, Earth Planet. Sci. Lett., 255, 94-105. Rajaram, G., T. Arun, A. Dhar, and G. Patil (2002), Rapid decrease in total magnetic field F at Antarctic stations – its relationship to core- mantle features, Antarctic Sci., 14, 61-68. Sabaka, T., N. Olsen, and M. E. Purucker (2004), Extending comprehensive models of the Earth’s magnetic field with Ørsted and CHAMP data, Geophys. J. Int., 159, 521-547. Waddington, R., D. Gubbins, and N. Barber (1995), Geomagnetic field analysis-V. Determining steady core-surface flows directly from geomagnetic observations, Geophys. J. Int., 122, 326-350.
http://hdl.handle.net/2122/3167
http://pubs.usgs.gov/of/2007/1047/srp/srp071/index.html
doi:10.3133/of2007-1047.srp071
op_rights open
op_doi https://doi.org/10.3133/of2007-1047.srp071
_version_ 1766255651464413184
spelling ftingv:oai:www.earth-prints.org:2122/3167 2023-05-15T13:51:39+02:00 The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica Meloni, A. Cafarella, L. De Michelis, P. Tozzi, R. Meloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Cafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia De Michelis, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Tozzi, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia 2007 http://hdl.handle.net/2122/3167 http://pubs.usgs.gov/of/2007/1047/srp/srp071/index.html https://doi.org/10.3133/of2007-1047.srp071 en eng USGS USGS Open-File Report 2007-1047, Short Research Paper 071 / Short Research Paper 071 (2007) Alexandrescu, M., D. Gibert, G. Hulot, J.L. Le Mouël, and G. Saracco (1996), Worldwide wavelet analysis of geomagnetic jerks, J. Geophys. Res., 101, 21975-21994. Bloxham, J., S. Zatman and M. Dumberry (2002), The origin of geomagnetic jerks, Nature, 420, 65-68. Chambodut, A, and M. Mandea (2005), Evidence for geomagnetic jerks in comprehensive models, Earth Planets Space, 57, 139-149. Chambodut, A, M. Mandea, and C. Eymin (2005), Geomagnetic jerks detected from comprehensive magnetic field models, Geophys. Res. Abstracts, 7, 05165. Courtillot, V., J. Ducruix, and J.L. Le Mouël (1978), Sur une accélération récente de la variation séculaire du champ magnétique terrestre, C.R. Acad. Sci. Ser. D, 287, 1095-1098. De Michelis, P., L. Cafarella, and A. Meloni (2000), A global analysis of the 1991 geomagnetic jerk, Geophys. J. Int., 143, 545-556. De Michelis, P., and R. Tozzi (2005), A local intermittency measure (LIM) approach to the detection of geomagnetic jerks, Earth Planet. Sci. Lett., 235, 261-272. De Santis, A., R. Tozzi, and L. Gaya-Piqué (2004), Information Content and K-entropy of the Present Earth Magnetic Field, Earth Planet. Sci. Lett., 218, 269-275. Gubbins, D., A. L. Jones, and C.C. Finlay (2006), Fall in Earth’s magnetic field is erratic, Science, 312, 900-902. Kerridge, D. (2001), Intermagnet: worldwide near-real-time geomagnetic observatory data, Proceedings of the Workshop on Space Weather, ESTEC. Lepidi, S., L. Cafarella, P. Francia, A. Meloni, P. Palangio, and J. J. Schott (2003), Low frequency geomagnetic field variations at Dome C (Antarctica), Annales Geophysicae, 21, 923–932. Macmillan, S. (1996), A geomagnetic jerk for the early 1990’s, Earth Planet. Sci. Lett., 137, 189-192. Malin, S.R.C., and B.M. Hodder (1982), Was the 1970 geomagnetic jerk of internal or external origin?, Nature, 296, 726-728. MacMillan, S. and S. Maus (2005), International Geomagnetic Reference Field – the tenth generation, Earth Planets and Space, 57, 1135-1140. Mandea, M., E. Bellanger, and J.L. Le Mouël (2000), A geomagnetic jerk for the end of the 20th century?, Earth Planet. Sci. Lett., 183, 369- 373. Mandea, M., and B. Langlais (2002), Observatory crustal magnetic biases during MAGSAT and Ørsted satellite missions, Geophys. Res. Lett., 29, 10.1029/2001GL013693. Meloni, A., L. R. Gaya-Piqué, P. De Michelis, and A. De Santis (2006), Some recent characteristics of geomagnetic secular variations in Antarctica, from: Fütterer D.K. at al. (eds) Antarctica: Contributions to global earth sciences, Spring-Verlag, Berlin Heidelberg New York, 377-382. Nagao, H., T. Iyemori, T. Higuchi, and T. Araki (2003), Lower mantle conductivity anomalies estimated from geomagnetic jerks, J. Geophys. Res., 108, 2254, doi:10.1029/2002JB001786. Olsen, N., and M. Mandea (2007), Investigation of a secular variation impulse using satellite data: the 2003 geomagnetic jerk, Earth Planet. Sci. Lett., 255, 94-105. Rajaram, G., T. Arun, A. Dhar, and G. Patil (2002), Rapid decrease in total magnetic field F at Antarctic stations – its relationship to core- mantle features, Antarctic Sci., 14, 61-68. Sabaka, T., N. Olsen, and M. E. Purucker (2004), Extending comprehensive models of the Earth’s magnetic field with Ørsted and CHAMP data, Geophys. J. Int., 159, 521-547. Waddington, R., D. Gubbins, and N. Barber (1995), Geomagnetic field analysis-V. Determining steady core-surface flows directly from geomagnetic observations, Geophys. J. Int., 122, 326-350. http://hdl.handle.net/2122/3167 http://pubs.usgs.gov/of/2007/1047/srp/srp071/index.html doi:10.3133/of2007-1047.srp071 open the geomagnetic field and its time variations secular variation and geomagnetic jerks in Antarctica geomagnetic observatories sign changes of the secular acceleration maps 04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals article 2007 ftingv https://doi.org/10.3133/of2007-1047.srp071 2022-07-29T06:04:42Z Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the magnetic field at a given location. Unfortunately, on the Antarctic continent the distribution of the permanent ground- based observatories does not permit a uniform coverage of the examined area. Furthermore, the magnetic records are characterized by intense external disturbances and noise that make the analysis of the magnetic field difficult. To improve our knowledge of the secular variation and detect the presence of secular variation impulses (geomagnetic jerks) in Antarctica, we use both observatory data and the CM4 quiet time magnetic field model. In particular CM4 improves our knowledge of geomagnetic jerks over Antarctica through the study of the sign changes of the secular acceleration maps. Published on line only 3.4. Geomagnetismo N/A or not JCR open Article in Journal/Newspaper Antarc* Antarctic Antarctica Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Antarctic The Antarctic

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