Optical televiewer luminosity logs are compared with densities measured gravimetrically on 520 snow, firn and ice samples from two locations of similar annual temperature (~???14??C) and contrasting accumulation rates (0.23 and 0.43?m w.e. per year) on the Roi Baudouin Ice Shelf, Antarctica. At the scale of ?10-1?m, an inverse exponential relationship (R2?=?0.96) is recorded between density and luminosity, indicating (i) that OPTV luminosity provides an effective proxy for density at such ice shelves, and (ii) that densities may be reconstructed from boreholes drilled elsewhere by hot water without the need for core material. Our analysis also suggests that this relationship may hold for newly-formed ice as well as for snow and firn. At the scale of ?10-1?m, both luminosity and density show similar patterns, but precise correlation is confounded by detailed differences between the two records.
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机译：将光学望远仪的光度测井曲线与重量法测得的密度进行比较，该密度是在两个年温度相似（〜??? 14？C）且相对累积速率（我们每年为0.23和0.43？m）的两个地点的520个雪，火和冰样品上测得的。 Roi Baudouin冰架，南极。在？10-1？m的尺度上，密度和光度之间记录了反指数关系（R2？=？0.96），表明（i）OPTV的光度提供了这种冰架上密度的有效替代，并且（ii ）密度可以从其他地方用热水钻的钻孔中重建，而无需岩心材料。我们的分析还表明，这种关系可能适用于新形成的冰以及雪和火星。在？10-1？m的范围内，光度和密度都显示出相似的模式，但是精确的相关性由于这两个记录之间的详细差异而混淆。
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