Relevant bibliographies by topics / Geomagnetic variation

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Geomagnetic variation'

Author: Grafiati
Published: 6 September 2023
Last updated: 25 July 2025

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Journal articles on the topic "Geomagnetic variation"

1

Sutcliffe, P. R. "The development of a regional geomagnetic daily variation model using neural networks." Annales Geophysicae 18, no. 1 (2000): 120–28. http://dx.doi.org/10.1007/s00585-000-0120-0.

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Abstract. Global and regional geomagnetic field models give the components of the geomagnetic field as functions of position and epoch; most utilise a polynomial or Fourier series to map the input variables to the geomagnetic field values. The only temporal variation generally catered for in these models is the long term secular variation. However, there is an increasing need amongst certain users for models able to provide shorter term temporal variations, such as the geomagnetic daily variation. In this study, for the first time, artificial neural networks (ANNs) are utilised to develop a ge
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Arifin, Lukman, and John Maspupu. "MODEL EMPIRIS HARI TENANG VARIASI MEDAN GEOMAGNET DI STASIUN GEOMAGNET TONDANO MANADO." JURNAL GEOLOGI KELAUTAN 12, no. 2 (2016): 115. http://dx.doi.org/10.32693/jgk.12.2.2014.251.

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Penentuan model empiris hari tenang variasi medan geomagnet dikonstruksi berdasarkan data geomagnet dari stasiun geomagnet (SG) Badan Meteorologi Klimatologi dan Geofisika (BMKG) Tondano, Manado. Hari tenang variasi medan geomagnet dinyatakan sebagai fungsi dari keempat komponen atau variabel yang mempengaruhinya yaitu: aktivitas matahari SA (solar activity), hari dalam setahun DOY (date of year), usia bulan LA (lunar age) dan waktu lokal LT (local time). Dalam bentuk matematis ditulis sebagai, EMQD ( SA, DOY, LA, LT ) = f(SA). g(DOY). h(LA). m(LT). Model empiris yang didasarkan pada fungsi ke
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Maspupu, John, and Setyanto C. D. Pranoto. "MODEL PARSIAL HARI TENANG VARIASI MEDAN GEOMAGNET SEBAGAI FUNGSI HARI DALAM SETAHUN, USIA BULAN DAN WAKTU LOKAL DI STASION GEOMAGNET TONDANO." JURNAL GEOLOGI KELAUTAN 12, no. 1 (2016): 43. http://dx.doi.org/10.32693/jgk.12.1.2014.245.

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Penentuan suatu model parsial hari tenang variasi medan geomagnet di stasion geomagnet Tondano merupakan fungsi Date of Year (DOY), Lunar Age (LA), dan Local Time (LT). Diperoleh tiga model parsial hari tenang variasi medan geomagnet yaitu = g(DOY), = h(LA), dan = m(LT). Kontribusi dari DOY terhadap hari tenang variasi medan geomagnet sangatlah kecil (sebesar 0,784.10-3 %). Kontribusi faktor fisis lainnya diduga berperan terhadap hari tenang variasi medan geomagnet . Informasi hasil analisis model parsial variasi hari tenang terhadap usia bulan menunjukkan adanya anomali di sekitar lokasi peng
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Lyatsky, W., and A. M. Hamza. "Seasonal and diurnal variations of geomagnetic activity and their role in Space Weather forecast." Canadian Journal of Physics 79, no. 6 (2001): 907–20. http://dx.doi.org/10.1139/p01-049.

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A possible test for different models explaining the seasonal variation in geomagnetic activity is the diurnal variation. We computed diurnal variations both in the occurrence of large AE (auroral electrojet) indices and in the AO index. (AO is the auroral electrojet index that provides a measure of the equivalent zonal current.) Both methods show a similar diurnal variation in geomagnetic activity with a deep minimum around (3–7) UT (universal time) in winter and a shallower minimum near 5–9 UT in equinoctial months. The observed UT variation is consistent with the results of other scientists,
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KUZNETSOV, V. V., V. V. PLOTKIN, I. I. NESTEROVA, and N. I. IZRAILEVA. "Universal Geomagnetic Variation." Journal of geomagnetism and geoelectricity 44, no. 7 (1992): 481–94. http://dx.doi.org/10.5636/jgg.44.481.

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Le Mouël, J. L., E. Blanter, and M. Shnirman. "The six-month line in geomagnetic long series." Annales Geophysicae 22, no. 3 (2004): 985–92. http://dx.doi.org/10.5194/angeo-22-985-2004.

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Abstract. Daily means of the horizontal components X (north) and Y (east) of the geomagnetic field are available in the form of long series (several tens of years). Nine observatories are used in the present study, whose series are among the longest. The amplitudes of the 6-month and 1-year periodic variations are estimated using a simple but original technique. A remarkably clear result emerges from the complexity of the geomagnetic data: the amplitude of the 6-month line presents, in all observatories, the same large variation (by a factor of 1.7) over the 1920–1990 time span, regular and qu
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Xiao, Sheng Hong, Zhi Wu Cai, Yan Min Xie, and Shao Feng Bian. "Navigation and Positioning by Using the Insufficient Geomagnetic Components." Advanced Materials Research 569 (September 2012): 707–11. http://dx.doi.org/10.4028/www.scientific.net/amr.569.707.

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Geomagnetic field information of the vehicle contains abundant positional information, so the positional information can be derived from the geomagnetic observational value. Firstly, base on the analysis of geomagnetic maps of southeast China, the least square algorithm is used for modeling the local geomagnetism on WMM2010(world magnetic model)database. Then, the optimal positional model can be derived. The simulation has been done, from the simulation results we can see that the mean- squared error of the model in latitude and longitude are about 0.7062 sea mile and 1.8735 sea mile respectiv
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Marques de Souza Franco, Adriane, Rajkumar Hajra, Ezequiel Echer, and Mauricio José Alves Bolzan. "Seasonal features of geomagnetic activity: a study on the solar activity dependence." Annales Geophysicae 39, no. 5 (2021): 929–43. http://dx.doi.org/10.5194/angeo-39-929-2021.

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Abstract. Seasonal features of geomagnetic activity and their solar-wind–interplanetary drivers are studied using more than five solar cycles of geomagnetic activity and solar wind observations. This study involves a total of 1296 geomagnetic storms of varying intensity identified using the Dst index from January 1963 to December 2019, a total of 75 863 substorms identified from the SuperMAG AL/SML index from January 1976 to December 2019 and a total of 145 high-intensity long-duration continuous auroral electrojet (AE) activity (HILDCAA) events identified using the AE index from January 1975
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Mandrikova, Oksana, Anastasia Rodomanskay, and Alexander Zaitsev. "Analysis of geomagnetic disturbances dynamics during increased solar activity and magnetic storms (according to the measurements of INTERMAGNET station network)." E3S Web of Conferences 127 (2019): 02003. http://dx.doi.org/10.1051/e3sconf/201912702003.

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We present and describe an automated method for analysis of magnetic data and for detection of geomagnetic disturbances based on wavelet transformation. The parameters of the computational algorithms allow us to estimate the characteristics of non-uniformly scaled peculiar properties in the variations of geomagnetic field that arise during increasing geomagnetic activity. The analysis of geomagnetic data before and during magnetic storms was carried out on the basis of the method according to ground station network. Periods of increasing geomagnetic activity, which precede and accompany magnet
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Trichtchenko, L., and D. H. Boteler. "Modelling of geomagnetic induction in pipelines." Annales Geophysicae 20, no. 7 (2002): 1063–72. http://dx.doi.org/10.5194/angeo-20-1063-2002.

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Abstract. Geomagnetic field variations induce telluric currents in pipelines, which modify the electrochemical conditions at the pipe/soil interface, possibly contributing to corrosion of the pipeline steel. Modelling of geomagnetic induction in pipelines can be accomplished by combining several techniques. Starting with geomagnetic field data, the geoelectric fields in the absence of the pipeline were calculated using the surface impedance derived from a layered-Earth conductivity model. The influence of the pipeline on the electric fields was then examined using an infinitely long cylinder (
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Dissertations / Theses on the topic "Geomagnetic variation"

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Bloxham, J. "Geomagnetic secular variation." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372644.

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Heller, Rainer. "The paleomagnetic field's long-term mean intensity and secular variation /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/6840.

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Pressling, Nicola Justine. "Pacific geomagnetic secular variation : the story from Hawaii." Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441187.

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Lean, Candida Mary Bevan. "Geomagnetic palaeosecular variation recorded in North and Central American speleothems." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240751.

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McArdle, Nicholas John. "Long term variation in geomagnetic field intensity and terrestrial planet development." Thesis, University of Liverpool, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569142.

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Knowledge of the intensity of the Earth's magnetic field throughout geological time can deliver a wealth of information regarding the development of the planet. The nature of the geomagnetic field is dependent on processes that occur deep in the Earth's core. By analysing long period changes in geomagnetic field intensity inferences can be made about conditions in the Earth's interior far back into Earth history. The microwave palaeointensity technique is a relatively recent addition to palaeomagnetic investigation. High-frequency microwaves, which are resonant with the constituent magnetic sy
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Finlay, Christopher Charles. "Hydromagnetic waves in Earth's core and their influence on geomagnetic secular variation." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418244.

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Mitsutake, Gen. "Natural variation in geomagnetic pulsations and preschool children's sleep disturbance and motor activity levels." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62799.pdf.

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Allington, M. L., Catherine M. Batt, M. J. Hill, A. Nilsson, A. J. Biggin, and N. Card. "Obtaining archaeointensity data from British Neolithic pottery: A feasibility study." Elsevier, 2021. http://hdl.handle.net/10454/18426.

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Yes<br>There is a significant lack of geomagnetic field strength (archaeointensity) measurements for many archaeological time periods in the United Kingdom (UK). This not only makes past geomagnetic secular variation difficult to model but also limits the development of archaeointensity dating. This paper presents the first archaeointensity study on UK Neolithic material. In this study, twenty-five sherds of Neolithic Grooved Ware pottery from the Ness of Brodgar, Orkney, UK, some with direct radiocarbon dates, were subjected to a full archaeomagnetic investigation with the aim of increasing t
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Wardinski, Ingo. "Core surface flow models from decadal and subdecadal secular variation of the main geomagnetic field." Potsdam : Geoforschungszentrum, 2005. http://www.gfz-potsdam.de/bib/pub/str0507/0507.htm.

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Wardinski, Ingo. "Core surface flow models from decadal and subdecadal secular variation of the main geomagnetic field." [S.l.] : [s.n.], 2004. http://www.diss.fu-berlin.de/2005/70/index.html.

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Books on the topic "Geomagnetic variation"

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L, Parker R., and United States. National Aeronautics and Space Administration., eds. Statistics of the geomagnetic secular variation for the past 5Ma. National Aeronautics and Space Administration, 1986.

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Constable, Catherine. Final report on geomagnetic field models incorporating physical constraints on the secular variation. National Aeronautics and Space Administration, 1993.

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Xanthakis, John N. Geomagnetic field variation as inferred from archaeomagnetism in Greece and palaeomagnetism in British lake sediments since 7000 B.C. Grapheion Dēmosieumatōn tēs Akadēmias Athēnōn, 1991.

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Karl-Heinz, Glassmeier, Soffel H. Chr, and Negendank Jörg F. W, eds. Geomagnetic field variations. Springer, 2009.

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Karl-Heinz, Glassmeier, Soffel H. Chr, and Negendank Jörg F. W, eds. Geomagnetic field variations. Springer, 2009.

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Glaβmeier, Karl-Heinz, Heinrich Soffel, and Jörg F. W. Negendank. Geomagnetic Field Variations. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-76939-2.

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Karl-Heinz, Glassmeier, Soffel H. Chr, and Negendank Jörg F. W, eds. Geomagnetic field variations. Springer, 2009.

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8

McLean, Susan. Bibliography of historical geomagnetic main field survey and secular variation reports at the World Data Center-A for Solid Earth Geophysics. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center, 1993.

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Dennis, Smith, World Data Center A for Solid Earth Geophysics., and National Geophysical Data Center, eds. Bibliography of historical geomagnetic main field survey and secular variation reports at the World Data Center-A for Solid Earth Geophysics. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center, 1993.

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Newitt, L. R. Guide for magnetic repeat station surveys. International Association of Geomagnetism and Aeronomy, 1996.

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Book chapters on the topic "Geomagnetic variation"

1

McLeod, Malcolm G. "Geomagnetic Secular Variation." In Geomagnetism and Palaeomagnetism. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0905-2_2.

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Korte, Monika. "Geomagnetic Field, Secular Variation." In Encyclopedia of Solid Earth Geophysics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-10475-7_112-1.

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Korte, Monika. "Geomagnetic Field, Secular Variation." In Encyclopedia of Solid Earth Geophysics. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-8702-7_112.

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Korte, Monika. "Geomagnetic Field, Secular Variation." In Encyclopedia of Solid Earth Geophysics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58631-7_112.

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Gubbins, David. "Historical Secular Variation and Geomagnetic Theory." In Geomagnetism and Palaeomagnetism. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0905-2_3.

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Rikitake, Tsuneji, and Yoshimori Honkura. "Secular Variation of the Geomagnetic Field." In Solid Earth Geomagnetism. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4546-3_2.

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Gillet, N., V. Lesur, and N. Olsen. "Geomagnetic Core Field Secular Variation Models." In Terrestrial Magnetism. Springer New York, 2009. http://dx.doi.org/10.1007/978-1-4419-7955-1_6.

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Svetlana, Riabova. "Geomagnetic Diurnal Variation at Mikhnevo Geophysical Observatory." In Processes in GeoMedia - Volume II. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-53521-6_42.

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Rikitake, Tsuneji, and Yoshimori Honkura. "Geomagnetic Variation of External Origin and Electromagnetic Induction." In Solid Earth Geomagnetism. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4546-3_8.

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Tarling, D. H. "Geomagnetic Secular Variation in Britain During the Last 2000 Years." In Geomagnetism and Palaeomagnetism. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0905-2_5.

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Conference papers on the topic "Geomagnetic variation"

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Asimopolos, Laurentiu, Natalia-Silvia Asimopolos, Vijdea Anca-Marina, Dinu Luminita, and Adrian-Aristide Asimopolos. "ANALYSIS OF GEOMAGNETIC DATABASES IMPACTING SPACE WEATHER." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s28.63.

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Through the complex analysis of the geomagnetic database of the Surlari Geomagnetic Observatory for over 80 years, corroborated with the data of other planetary observatories from the INTERMAGNET network, we have extracted the geomagnetic information that is correlated with the specific physical parameters of space weather domain. Space weather refers to the conditions and phenomena occurring in outer space that can influence the near-Earth space environment. This concept includes a variety of events and conditions that occur outside the Earth's atmosphere and can affect various aspects of spa
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Trichtchenko, L., D. H. Boteler, S. M. Hesjevik, and O. Birketveit. "The Production of Telluric Current Effects in Norway." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01314.

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Abstract This paper presents observations of telluric variations in the pipe-to-soil potential of the gas pipeline system in Norway. The potential variations at different sites are well correlated indicating a common source. A daily variation in potential is shown to be related to the “quiet-day” variation in the magnetic field. Shorter period fluctuations are caused by magnetic field variations associated with auroral activity. The method of modeling the electric fields induced by the geomagnetic field variations is presented and model calculations are made to determine the pipe-to-soil poten
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Fernberg, P., L. Trichtchenko, D. H. Boteler, and L. McKee. "Telluric Hazard Assessment for Northern Pipelines." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07654.

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Abstract Telluric currents cause variations in pipe-to-soil potentials, which can override a pipeline’s cathodic protection system. The cumulative effect of the “unprotected” time can be significant in areas where telluric activity is high, such as the Canadian north. This paper presents a general approach to the assessment of telluric activity. Telluric currents observed in a pipeline are the result of three simultaneously operating factors: (1) variations of the Earth’s natural geomagnetic field, (2) conductivity of the underlying Earth and (3) pipeline electromagnetic properties and pipelin
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Boteler, D. H., and L. Trichtchenko. "Observations of Telluric Currents in Canadian Pipelines." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01316.

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Abstract Results are presented from studies of telluric currents on two pipelines in Canada: the Norman Wells-Zama pipeline in northern Canada, and the North Bay-Morrisburg pipeline in southern Canada. On each pipeline simultaneous recordings were made of pipe-to-soil potentials at different points along the pipe. These observations showed simultaneous fluctuations, at all sites, that coincided with variations of the geomagnetic and geo-electric fields. Tests of the relation between the variations at different sites showed a high correlation at nearby sites and a decrease in correlation at sit
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Boteler, D. H., L. Trichtchenko, C. Blais, and R. Pirjola. "A Telluric Current Simulator for Pipelines." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02522.

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Abstract Telluric currents due to geomagnetic field variations have long been known to cause variations in pipe-to-soil potentials (PSP) on pipelines. These are increasingly being taken into account in the design of cathodic protection systems for new pipelines. Online services are available for modelling telluric currents but cannot handle all pipeline configurations. This paper describes the development of a new telluric simulator, based on a more versatile modeling technique that can include more details of a pipeline such as branches and other features. This can show the pipe-to-soil poten
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Trichtchenko, L., P. Fernberg, and M. Harrison. "Use of Geomagnetic Data for Evaluation of Telluric Effects on Pipelines." In CORROSION 2010. NACE International, 2010. https://doi.org/10.5006/c2010-10113.

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Abstract Telluric currents interfere with cathodic protection systems and cause variations in pipe-to-soil potentials, which can exceed the levels recommended for protection of the pipeline steel. The amplitudes of telluric currents observed in a pipeline depend on three factors: (1) the level of the geomagnetic activity, (2) conductivity of the underlying earth and (3) pipeline electromagnetic properties and geometric parameters. These factors have been incorporated into mathematical models that are used to estimate the pipe-to-soil potential variations due to telluric activity. The time when
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Nickolaenko, A. P., L. M. Rabinowicz, M. Hayakawa, and K. Hattori. "Periodic Variations of the Hurst Exponent of the Geomagnetic Field." In 15th International Zurich Symposium and Technical Exposition on Electromagnetic Compatibility. IEEE, 2003. https://doi.org/10.23919/emc.2003.10806292.

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Trichtchenko, L. "Assessment of Telluric Activity in the Area of the Proposed Alaska Highway Pipeline." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01192.

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Abstract The geomagnetic field fluctuations are accompanied by the geo-electric (telluric) field and telluric currents at the surface of the Earth and in the pipelines. These telluric currents disturb pipeline cathodic protection levels, creating pipe-to-soil potential (PSP) fluctuations with different amplitudes. Amplitudes of PSP fluctuations directly depend on the telluric activity in the area of the pipeline location. To estimate the amplitudes of PSP variations due to telluric activity, pipeline circuit model based on Distributed Source Transmission Line Theory can be applied. The unknown
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Boteler, D. H. "Telluric Currents and Their Effect on Cathodic Protection of Pipelines." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04050.

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Abstract Telluric currents cause variations in pipe-to-soil potentials that take the potentials outside the desired range for cathodic protection. This paper reviews the causes of telluric currents, such as geomagnetic storms and tidal water movements, and shows how knowledge of these phenomena can be used to determine the occurrence of telluric current in pipelines. The pipe-to-soil potential variations created by telluric currents are described using results from recent studies involving extensive telluric current observations and modelling. Finally, this knowledge is used to show how design
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Gorbachev, L. P., Yu B. Kotov, and T. A. Semyonova. "Geomagnetic Variations Caused by Camouflet Explosions: Theoretical Model and Experimental Data Analysis." In 1996_EMC-Europe_Roma. IEEE, 1996. https://doi.org/10.23919/emc.1996.10783755.

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Reports on the topic "Geomagnetic variation"

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Crooker, N. U., E. W. Cliver, and B. T. Tsurutani. The Semiannual Variation of Great Geomagnetic Storms and the Postshock Russell-McPherron Effect Preceding Coronal Mass Ejecta. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada254955.

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Onovughe, Elvis. Usage of RC index as a Good Representation for Characterising Rapid Variation Signals in Geomagnetic Field Studiess. Balkan, Black sea and Caspian sea Regional Network for Space Weather Studies, 2018. http://dx.doi.org/10.31401/sungeo.2018.01.11.

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BARKHATOV, NIKOLAY, and SERGEY REVUNOV. A software-computational neural network tool for predicting the electromagnetic state of the polar magnetosphere, taking into account the process that simulates its slow loading by the kinetic energy of the solar wind. SIB-Expertise, 2021. http://dx.doi.org/10.12731/er0519.07122021.

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The auroral activity indices AU, AL, AE, introduced into geophysics at the beginning of the space era, although they have certain drawbacks, are still widely used to monitor geomagnetic activity at high latitudes. The AU index reflects the intensity of the eastern electric jet, while the AL index is determined by the intensity of the western electric jet. There are many regression relationships linking the indices of magnetic activity with a wide range of phenomena observed in the Earth's magnetosphere and atmosphere. These relationships determine the importance of monitoring and predicting ge
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Nikitina, L., and L. Trichtchenko. Extreme values statistical assessment for geomagnetic and geoelectric field variations for Alberta. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/296956.

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Kleimenova, Natalia G., A. Odzimek, S. Michnowski, and M. Kubicki. Geomagnetic Storms and Substorms as Space Weather I nfluence on Atmospheric Electric Field Variations. Balkan, Black Sea and Caspian Sea Regional Network on Space Weather Studies, 2018. http://dx.doi.org/10.31401/sungeo.2018.01.14.

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