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arXiv 1405.0192physics.geo-ph
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地中微子与地球模型

Geo-neutrinos and Earth Models

S. T. Dye, Y. Huang, V. Lekic, W. F. McDonough, O. Sramek

摘要:

本文介绍了地中微子测量的现状及其对地幔辐射加热的意义。地球模型预测不同水平的辐射加热,因此,不同的地中微子通量从地幔。地震层析成像揭示了地幔深部的特征,这些特征可能与辐射加热有关,并导致地球表面地幔地球中微子通量的空间变化。海洋观测站对地幔通量具有最高的灵敏度,并有可能解析地球模型和地幔特征。对来自陆壳的地中微子通量估计的改进减少了地幔通量测量的不确定性,特别是陆基观测站的测量。这些改进使地球模型的分辨率使用多个大陆观测站的综合测量。

英文摘要:

We present the current status of geo-neutrino measurements and their implications for radiogenic heating in the mantle. Earth models predict different levels of radiogenic heating and, therefore, different geo-neutrino fluxes from the mantle. Seismic tomography reveals features in the deep mantle possibly correlated with radiogenic heating and causing spatial variations in the mantle geo-neutrino flux at the Earth surface. An ocean-based observatory offers the greatest sensitivity to the mantle flux and potential for resolving Earth models and mantle features. Refinements to estimates of the geo-neutrino flux from continental crust reduce uncertainty in measurements of the mantle flux, especially measurements from land-based observatories. These refinements enable the resolution of Earth models using the combined measurements from multiple continental observatories.

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