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References
|
Abidin ZZ, Jusoh MH, Abbas M, Yoshikawa A (2019). Application of solar quiet (Sq) current in determining mantle conductivity-depth structure in Malaysia. Journal of African Earth Sciences 192:104776. |
|
|
Agha SO, Okeke FN (2007). Estimation of the conductivity-depth ratio of the various sub-regions of the upper mantle using Sq current. The Nigerian Journal of Space 3:57-67. |
|
|
Anderson DL, Dziewonski AM (1984). Seismic tomography. Scientific American 251(4):60-71. |
|
|
Arora BR, Campbell WH, Schiffmacher ER (1995). Upper Mantle Electrical Conductivity in the Himalayan Region. Journal of Geomagnetism and Geoelectricity 47(7):653-665. |
|
|
Banks RJ (1972). The overall conductivity distribution of the Earth. Journal of Geomagnetism and Geoelectricity 24(3): 337-351. |
|
|
Bolaji O, Adimula I, Adeniyi J, Yumoto K (2015). Variability of horizontal magnetic field intensity over Nigeria during low solar activity. Earth Moon Planets 110(1-2):91-103. |
|
|
Campbell WH, Anderssen RS (1983). Conductivity of the subcontinental upper mantle: an analysis using quiet- day records of North America. Journal of Geomagnetism and Geoelectricity 35(10):367-382. |
|
|
Campbell WH, Schiffmacher ER (1985). Quiet ionospheric currents of the northern hemisphere derived from Geomagnetic field records. Journal of Geophysical Research 90: 6475-6486 |
|
|
Campbell WH, Schiffmacher ER (1986). Quiet ionospheric currents of the Northern Hemisphere derived from geomagnetic field records. Journal of Geophysics 90: 6475-6486. |
|
|
Campbell WH, Schiffmacher ER (1988). Quiet ionospheric currents of the Southern Hemisphere derived from geomagnetic records. Journal of Geophysical Research: Space Physics 93(A2):933-944. |
|
|
Campbell WH, Schiffmacher ER (1988b). Upper mantle electrical conductivity for seven subcontinental regions of the Earth. Journal of Geomagnetism and Geoelectricity 40(11):1387-1406. |
|
|
Campbell WH (1987). The upper mantle conductivity analysis method using observatory records of the geomagnetic field. Pure and Applied Geophysics 125(2):427-457. |
|
|
Campbell WH (1997). Introduction to geomagnetic fields. Cambridge University Press, New York. |
|
|
Campbell WH (2003). Introduction to geomagnetic fields. Cambridge University Press, New York. |
|
|
Campbell WH, Barton CE, Chamalaun FH, Welsh W (1998). Quiet-day ionospheric currents and their application to upper mantle conductivity in Australia. Earth Planet Space 50(4):347-360. |
|
|
Canton J (1759). An attempt to account for the regular diurnal variation of the horizontal magnetic needle. Philosophical Transactions of the Royal Society of London 49:398-445. |
|
|
Chapman S (1919). The solar and lunar diurnal variation of the Earth's magnetism. Philosophical Transactions of the Royal Society of London 218(561-569):1-118. |
|
|
Chapman S, Price A (1930). The electric and magnetic state of the interior of the Earth, as inferred from terrestrial magnetic variations. Philosophical Transactions of the Royal Society of London 229(670-680):427-460. |
|
|
Chandrasekhar E (2011) "Regional Electromagnetic Induction Studies Using Long Period Geomagnetic Variations". Chapter 3, in The Earth's Magnetic Interior, Vol. 1, edited by E. Petrovský, E. Herrero-Bervera, T, Harinarayana and D. Ivers, pp. 31 - 42, Springer Dordrecht Heidelberg London New, York. |
|
|
Chen CH, Liu JY, Yumoto K, Lin C H, Fang TW (2008). Equatorial ionization anomaly of total electron content and equatorial electrojet in ground-based geomagnetic field strength. The Journal of Atmospheric and Solar-Terrestrial Physics 70(17):2172-2183. |
|
|
Cleveland WS (1979). Robust locally weighted regression and smoothing scatter plots. American Statistical Association 74(368):829-836. |
|
|
Didwall EM (1984). The electrical conductivity of the upper mantle as estimated from satellite magnetic field data. Journal of Geophysics Research 89(B1):537-542. |
|
|
Drury MJ (1978). Partial melt in the asthenosphere: evidence from electrical conductivity data. Physics of the Earth and Planetary Interiors. 17(2):P16-P20. |
|
|
Dziewonski AM, Anderson DL (1981). Preliminary reference Earth model. Physics of the Earth and Planetary 25(4):297-356. |
|
|
Hawary RE, Yumoto K, Yamazaki Y, Mahrous A, Ghamry E, Badi K, Meloni A, Kianji G, Uiso CBS, Mwiinga N, Joao L, Affluo T, sutcliffe PR, Mengistu G, Baki P, Abe S, Ikeda A, Ikeda A, Fujimoto A, Tokunaga T (2012). Annual and semi-annual Sq variations at 960 MM MAGDAS I and II stations in Africa. Earth Planets Space 64(6):425-432. |
|
|
Gauss CF (1838). Allgemeine Theories des Erdmagnetismus, in Resultate aus den Beobachtungen des magnetischem Vereins in Yahr, edited by C. F. Gauss and W. Weber: translated from the German by E. Sabine and R. Taylor. Sci. Mem. Select. Trans. For. Acad. Learned Soc. Foreign J. 2:184 -251, 1841. |
|
|
Gauss CF (1939). Allgemeine Theories des Erdmagnetismus 1. |
|
|
Gough DI (1983). Electromagnetic geophysics and global tectonics. Journal of Geophysical Research: Solid Earth, 88(B4):3367-3377. |
|
|
Glaßmeier KH, Soffel H, Negendank J (2009). Geomagnetic Field Variations, Advances in Geophysical and Environmental Mechanics and Mathematics. Springer-Verlag Berlin Heidelberg. |
|
|
Glover PW, Vine F (1994). Electrical conductivity of the continental crust. Geophys. Research Letters. 21(22):2357-2360. |
|
|
Graham G (1724). An account of the observations made of the variation of the horizontal needle in London in the later part of the year 1722 and beginning of 1723. Philosophical Transactions of the Royal Society of London A32:96-107. |
|
|
Katsura T, Ito E (1989). The system Mg2SiO4 _ Fe2SiO4 at high pressures and temperatures: precise determination of stabilities of olivine, modified spinel and spinel. Journal of Geophysical Research 94(B11):15663-15670. |
|
|
Kennett B, Engdahl E (1991). Travel times for global Earthquake location and phase identification. Geophysical Journal International. 105(2):429-465. |
|
|
Kono M (2009). Geomagnetism Treatise on Geophysics. Elsevier Journal 5:1:30. |
|
|
Langel RA (1982). Results from the magsat mission. Issue of the Johns Hopkins APL Technical Digest 3:307-324. |
|
|
Law LK, Riddihough RP (1971). A geographical relation between geomagnetic variations anomalies and tectonics. Journal of Earth Science 8(9):1094-1106 |
|
|
Maxwell JC (1873). Treatise on Electricity and Magnetism. Cambridge University Press, London. |
|
|
Neal SL, Mackie RL, Larsen JC, Schultz A (2000). Variations in the electrical conductivity of the upper mantle beneath North America and the Pacific Ocean. Journal of Geophysical Research 105(B4):8229-8242. |
|
|
Obiekezie TN, Okeke FN (2010). Upper Mantle Conductivity Determined from the Solar Quiet Day Ionospheric Currents in the Dip Equatorial Latitudes of West Africa. Moldavian Journal of Physical Sciences 9(2):199-204. |
|
|
Obiora DN, Okeke FN (2013). Crustal and upper mantle electrical conductivity structure in North Central Nigeria. International Journal of Physical Sciences 8(42):1975-1982. |
|
|
Obiora DN, Okeke FN, Yumoto K (2015). Electrical conductivity of mantle in the North Central region of Nigeria. Journal of Earth System Science 101:274-281. |
|
|
Ohtani E, Sakai T (2008). Recent advances in the study of mantle phase transitions. Physics of the Earth and Planetary 170:240-247. |
|
|
Olsen N (1999). Induction studies with satellite data. Surveys in Geophysics 20:309-340. |
|
|
Onwumechili CA, Ogbuehi PO (1967). Analysis of the magnetic field of the equatorial electrojet. Journal of Atmospheric and Terrestrial Physics 29(5):553-566. |
|
|
Roberts G (1986). Global electromagnetic induction. Surveys in Geophysics 8(3):339-374. |
|
|
Sabine E (1846). Contributions to Terrestrial Magnetism. No.VII. Philosophical Transactions of the Royal Society of London. 136(240):237-336. |
|
|
Schluter T (2006). Geological Atlas of Africa. Springer pp. 180-183. |
|
|
Schmucker U (1970). An introduction to induction anomalies. Journal of Geomagnetism and Geoelectricity 2:9-33. |
|
|
Schuster A (1908). The diurnal variation of terrestrial magnetism. Philosophical Transactions of the Royal Society A 208:163-204. |
|
|
Schuster A (1889). The diurnal variation of terrestrial magnetism. Philosophical Transactions London A180:467-518. |
|
|
Tachard G (1688). A relation of the voyage to Siam: performed by six Jesuits sent by the French king, to the Indies and China in the year 1685.Wikipedia, the free encyclopedia. |
|
|
Takeda M (2002). The correlation between the variation in ionospheric conductivity and that of the geomagnetic sq field. Journal of Atmospheric and Solar-Terrestrial Physics 64(15):1617-1621. |
|
|
Tarits P (1994). Electromagnetic studies of global geodynamic processes. Surveys in Geophysics 15(2):209-238. |
|
|
Thybo H (2006). The heterogeneous upper mantle low velocity zone. Tectonophysics 416(1-4):53-79. |
|
|
Ugbor DO, Okeke FN, Yumoto K (2016). Mapping the earth conductivity-depth structure of African geomagnetic equatorial anomaly regions using solar quiet current variations. Journal of African Earth Sciences 116: 81-88. |
|
|
Von Humboldt A (1863). Cosmos. Vol. V. English translation by E. C. Otte and W. S. Dallas. Harper and Bros. Pub., New York. |
|
|
Wang D, Mookherjee M, Xu Y, Karato SI (2006). The effect of water on the electrical conductivity of olivine. Nature 443: 977. |
|
|
Yamazaki, Y, Richmond AD, Liu HL, Yumoto K, Tanaka Y (2012c). Sq current system during stratospheric sudden warming events in 2006 and 2009. Journal of Geophysical Research 117: A12313. |
|
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