MyShake: A smartphone seismic network for earthquake early warning and beyond.
MyShake: A smartphone seismic network for earthquake early warning and beyond.
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DOI：
10.1126/sciadv.1501055
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发表时间：
2016-02
期刊：
影响因子：
13.6
通讯作者：
Kwon YW
中科院分区：
文献类型：
--
作者：
Kong Q;Allen RM;Schreier L;Kwon YW
MyShake 是一种利用私人智能手机中的传感器进行地震早期预警的众包方法。城市环境中的大地震继续造成数万至数十万人死伤，造成持久的社会和经济灾难。地震早期预警 (EEW) 提供数秒到数分钟的预警，使人们能够转移到安全区，并自动减速和关闭交通和其他机械。世界各地运行的少数 EEW 系统使用仅在少数国家存在的传统地震和大地测量网络。智能手机比传统网络更为普及，并且包含也可用于检测地震的加速计。我们报告了新型地震系统 MyShake 的开发，该系统利用个人/私人智能手机传感器来收集数据并分析地震。我们证明，智能手机可以记录 10 公里或更短距离内的 5 级地震，并开发手机检测功能，将地震与其他日常震动区分开来。然后，我们的概念验证系统在中心站点收集地震数据，其中网络检测算法确认地震正在发生，并实时估计地震的位置和震级。然后，该信息可用于发出即将发生的地面震动警报。 MyShake 可用于增强具有传统网络的地区的 EEW，并可在没有传统网络的地区提供唯一的 EEW 功能。此外，记录的地震波形可用于提供快速微震图、研究对建筑物的影响，并可能对浅层地球结构和地震破裂运动学进行成像。
MyShake is a crowdsourcing approach to earthquake early warning that harnesses the sensors in private smartphones. Large magnitude earthquakes in urban environments continue to kill and injure tens to hundreds of thousands of people, inflicting lasting societal and economic disasters. Earthquake early warning (EEW) provides seconds to minutes of warning, allowing people to move to safe zones and automated slowdown and shutdown of transit and other machinery. The handful of EEW systems operating around the world use traditional seismic and geodetic networks that exist only in a few nations. Smartphones are much more prevalent than traditional networks and contain accelerometers that can also be used to detect earthquakes. We report on the development of a new type of seismic system, MyShake, that harnesses personal/private smartphone sensors to collect data and analyze earthquakes. We show that smartphones can record magnitude 5 earthquakes at distances of 10 km or less and develop an on-phone detection capability to separate earthquakes from other everyday shakes. Our proof-of-concept system then collects earthquake data at a central site where a network detection algorithm confirms that an earthquake is under way and estimates the location and magnitude in real time. This information can then be used to issue an alert of forthcoming ground shaking. MyShake could be used to enhance EEW in regions with traditional networks and could provide the only EEW capability in regions without. In addition, the seismic waveforms recorded could be used to deliver rapid microseism maps, study impacts on buildings, and possibly image shallow earth structure and earthquake rupture kinematics.