Results 101 to 110 of about 188 (119)
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Paleointensity experiments using alternating field demagnetization
Earth and Planetary Science Letters, 2000Abstract Experiments for absolute paleointensity involve a large number of heatings and thus increase the probability of mineralogical changes which considerably reduce the success rate. Magnetic granulometry also plays an important role. In the presence of multidomain grains thermal demagnetization of natural remanent magnetization (NRM) is not ...
Jean-Pierre Valet +1 more
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Paleointensity behavior in Barremian–Cenomanian (Cretaceous)
International Journal of Geomagnetism and Aeronomy, 2004Fragmentary knowledge on geomagnetic field intensity in Barremian–Cenomanian stageobtained from sediment rocks is summarized. Three types of periodical variations arerevealed in the paleointensity behavior. The types differ by the amplitude and duration(tens of millennia, hundreds of millennia and more than million years).
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Multivectorial paleointensity determination by the Thellier method
Journal of Geophysical Research: Solid Earth, 2006Theoretical and experimental study of shape of the Arai‐Nagata diagrams for the natural remanent magnetization (NRM) consisting of two low‐ and high‐temperature partial thermal remanent magnetization vectors directed at angle θ to each other is considered.
V. P. Shcherbakov, G. V. Zhidkov
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A review of lunar paleointensity data
Advances in Space Research, 1982Abstract An extension of the saturation remanence normalization method to over 50 samples implies that a lunar surface field, comparable in intensity to the Earth's magnetic field, existed from about 3.65 to 3.85 AE. Absolute paleointensity estimates published to date, and surface field strengths, as measured by the Apollo subsatellites, are in ...
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The inverse problem of paleointensity determination
Physics of the Earth and Planetary Interiors, 2004Abstract Analysis of paleointensity experimental data is often carried out using a special simple case of error-in-variable (EIV) formalism. Though mathematically sound, this approach is quite limited in the ways it offers to assess uncertainty and quality of the paleointensity estimates.
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Paleointensity across the Réunion event in Ethiopia
Earth and Planetary Science Letters, 1999Abstract Paleointensity experiments have been conducted on a volcanic series of 33 flows which recorded the geomagnetic Reunion event. Successive determinations of absolute paleointensity from 20 flows indicate that the Reunion event would actually be characterized by two successive periods of low field intensity, with a total duration not in excess ...
Julie Carlut +6 more
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