Background magnetic spectra: ∼10−5 to ∼105 Hz
Background magnetic spectra: ∼10−5 to ∼105 Hz
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背景磁谱：〜10−5 至〜105 Hz
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
A. Fraser
中科院分区：
文献类型：
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作者：
L. Lanzerotti;C. Maclennan;A. Fraser
罗斯岛上哈特角半岛的到达高地地区已被指定为南极大陆上第二个具有特殊科学价值的地点。它是南极洲唯一被指定为自然电磁安静场所的SSSI。随着世界范围内文明的电磁噪音水平的增加，世界各地的这些遗址如果得到保护，将具有越来越重要的科学意义。本文报道了1986年6月在到达高地测得的地磁起伏的幅度和函数形式的测定。覆盖的频率范围从{约}10{sup{-5}}到{约}10{sup}5}赫兹，由于仪器的限制，间隔在{约}10{sup{-}1}到{约}10{sup 1}}之间。在这个频率范围内，比地球上任何地点以前报道的任何频率范围都要大，磁场幅度谱以FT/{根}赫兹为单位，随着频率f的增加而下降，{约}f{sup{负}1}到{约}f{sup{负}1.5}，并且在f{约}10{sup{负}3}赫兹处具有{约}10{sup 8}ft/{自由基}赫兹的值。
The Arrival Heights area of the Hut Point Peninsula on Ross Island has been designated the 2nd Site of Special Scientific Interest (SSSI) on the Antarctic continent. It is the only SSSI in Antarctica designated as a natural electromagnetically quiet site. As the electromagnetic noise levels of civilization increase world-wide, such sites around the world, if preserved, will be of increasing scientific importance. The authors report here the determination of the amplitude and functional form of the geomagnetic fluctuations measured at Arrival Heights in June 1986. The frequency range covered is from {approximately}10{sup {minus}5} to {approximately}10{sup 5} Hz, with a gap between {approximately}10{sup {minus}1} to {approximately}10{sup 1} Hz due to instrumentation limitations. Over this frequency range, which is larger than any reported previously from any site on Earth, the Magnetic field amplitude spectrum in units of fT/{radical}Hz falls with increasing frequency f as {approximately}f{sup {minus}1} to {approximately}f{sup {minus}1.5}, and has a value of {approximately}10{sup 8} fT/{radical}Hz at f{approximately}10{sup {minus}3} Hz.