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yexuqing木虫之王 (文学泰斗)
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Global earthquake detection and warning using Android phones
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Global earthquake detection and warning using Android phones 利用安卓手机进行全球地震探测和预警 ▲ 作者：RICHARD M. ALLEN, ALEXEI BARSKI, MICAH BERMAN, ROBERT BOSCH, YOUNGMIN CHO, XIA SUMMER JIANG, ET AL. ▲链接： https://www.science.org/doi/10.1126/science.ads4779 ▲摘要： 地震预警系统越来越多地被部署为减少地震损失的一种战略，但是在许多地震易发国家并不存在其所需的区域性地震监测网络。 研究组使用全球安卓智能手机网络来开发地震探测能力、警报传递系统和用户反馈框架。在3年的运行中，该系统在土耳其每月平均探测到312次地震，震级从1.9级到7.8级不等。98个国家发布了4.5级以上地震警报，相当于每月约60次地震，发布1800万条警报。 用户反馈显示，85%收到警报的人感觉到了震动，其中分别有36%、28%和23%的人在震动前、震动中和震动后收到了警报。研究组展示了如何大规模实施基于智能手机的地震检测算法，并通过震后分析对其进行改进。 ▲ Abstract： Earthquake early-warning systems are increasingly being deployed as a strategy to reduce losses in earthquakes, but the regional seismic networks they require do not exist in many earthquake-prone countries. We use the global Android smartphone network to develop an earthquake detection capability, an alert delivery system, and a user feedback framework. Over 3 years of operation, the system detected an average of 312 earthquakes per month with magnitudes from M 1.9 to M 7.8 in Türkiye. Alerts were delivered in 98 countries for earthquakes with M ≥4.5, corresponding to ~60 events and 18 million alerts per month. User feedback shows that 85% of people receiving an alert felt shaking, and 36, 28, and 23% received the alert before, during, and after shaking, respectively. We show how smartphone-based earthquake detection algorithms can be implemented at scale and improved through postevent analysis. |
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