罗斯冰架现场射频冰衰减
Ross Ice Shelf in situ radio-frequency ice attenuation
摘要：
我们测量了通过罗斯冰架垂直传播的射频信号的现场平均电场衰减长度。我们选择了一个地点，摩尔湾，明纳布拉夫南部，以其在冰海界面的高反射率而闻名。我们确认了镜面反射，并使用返回脉冲来测量在1155 m的往返距离上从75-1250 MHz的平均衰减长度。我们发现的平均电场衰减长度变化从500米在75 MHz到300米在1250 MHz，与55至15米的实验不确定性。我们讨论了中微子望远镜，使用无线电技术的影响，包括罗斯冰架作为其敏感量的一部分。
英文摘要：
We have measured the in situ average electric field attenuation length for radio-frequency signals broadcast vertically through the Ross Ice Shelf. We chose a location, Moore Embayment, south of Minna Bluff, known for its high reflectivity at the ice-sea interface. We confirmed specular reflection and used the return pulses to measure the average attenuation length from 75-1250 MHz over the round-trip distance of 1155 m. We find the average electric field attenuation length to vary from 500 m at 75 MHz to 300 m at 1250 MHz, with an experimental uncertainty of 55 to 15 m. We discuss the implications for neutrino telescopes that use the radio technique and include the Ross Ice Shelf as part of their sensitive volume.
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