塔楼依然矗立：飓风海伦妮期间蜂窝基站中断的原因分解
The Towers Were Standing: A Cause Decomposition of Cellular Outages During Hurricane Helene
- University of Southern Mississippi（南密西西比大学）
- George Mason University（乔治梅森大学）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
该研究首次分解飓风海伦妮期间基站中断原因，发现站点损坏极少，电力中断为主因，但山区传输中断占比高，挑战了传统物理破坏模型。
AI中文摘要：
飓风海伦妮造成了联邦通信委员会公开记录中最大规模的绝对基站中断，峰值达到4562个站点。传统模型是物理性的：塔楼被摧毁。海伦妮确实摧毁了超过1700英里的光纤，但其中几乎没有涉及蜂窝基站。我们首次对联邦通信委员会的灾难信息报告系统进行了原因分解研究，通过24份每日申报文件中的两次独立提取并交叉核对，重建了80个州日和580个县日的数据。基站损坏可忽略不计：在六个州中，归因于基站损坏的站点日仅占1.1%，任何地区最高不超过3.8%。站点依然矗立。导致其中断的原因因地貌而异：综合来看，电力中断占主导地位，占63.2%，但在多山的北卡罗来纳州，传输（回程）中断占52.2%，而电力中断占47.3%，在田纳西州，传输中断占69.9%。北卡罗来纳州的传输中断占比在事件期间从7.0%上升至85.0%（rho = 0.92）。登陆十七天后，即10月15日，北卡罗来纳州六个相邻县有47个站点失去传输，且无降雨、无电力损失、无损坏，并在下一次报告前恢复。独立的主动探测测量证实了这一点：响应/24网段在十二小时内下降1.02%，而田纳西州保持平稳。我们发布了该数据集。备用电力是标准的韧性投资；在这里，它只解决了问题中较小的一半。
英文摘要：
Hurricane Helene produced the largest absolute cell-site outage in the public FCC record, peaking at 4562 sites. The conventional model is physical: towers destroyed. Helene did destroy over 1700 miles of fibre, but almost none of it was cell sites. We present the first cause-decomposed study of the FCC's Disaster Information Reporting System, reconstructing 80 state-days and 580 county-days from 24 daily filings by two reconciled independent extractions. Damage to cell sites is negligible: 1.1% of attributed cell-site-days across six states, at most 3.8% anywhere. The sites were standing. What took them out divides by terrain: pooled, power dominates at 63.2%, but in mountainous North Carolina severed transport (backhaul) reaches 52.2% against 47.3%, and in Tennessee 69.9%. North Carolina's transport share rises from 7.0% to 85.0% across the event (\r{ho} = 0.92). Seventeen days after landfall, on 15 October, 47 sites lost transport across six contiguous North Carolina counties with no rainfall, no power loss, no damage, and recovery by the next report. Independent active-probe measurement corroborates it: responsive /24s fall 1.02% for twelve hours while Tennessee stays flat. We release the dataset. Backup power is the standard resilience investment; here it addresses the smaller half of the problem.
