Advanced tsunami detection and forecasting by radar on unconventional airborne observing platforms
Advanced tsunami detection and forecasting by radar on unconventional airborne observing platforms
复制标题
在非常规机载观测平台上利用雷达进行先进海啸探测和预报
DOI：
10.1038/s41598-020-59239-1
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发表时间：
2020
影响因子：
4.6
通讯作者：
Takuji Waseda and Toshiyuki Hibiya
中科院分区：
文献类型：
--
作者：
Iyan E. Mulia;Tomoyuki Hirobe;Daisuke Inazu;Takahiro Endoh;Yoshihiro Niwa;Aditya Riadi Gusman;Hidee Tatehata;Takuji Waseda and Toshiyuki Hibiya
维持一个准确、及时和全球性的海啸预报系统仍然是科学界面临的一个挑战。为此，部署了各种可行的地球物理监测装置。然而，在其他区域很难建立新的观测网络，维持现有系统的费用也很高。这项研究提出了一种新的和补充的方法来监测海啸使用现有的移动平台。拟议的系统包括一个雷达高度计，全球导航卫星系统接收器，和机载平台，如商用飞机，无人机，或专用高速飞机，和一个数据同化模块与确定性模型上的适当的通信链路。通过对日本南海海槽海啸的双数据实验，验证了该系统在海啸预报中的可行性。我们的结果通过代理观测和严格的数值实验证明了空中海啸观测作为一项可行的未来技术的潜力。在没有新的观测网络的情况下，海啸发生区域的广泛覆盖是一个优势，但需要克服各种监管限制。该研究为海啸探测和预报技术的发展提供了新的视角。利用现有平台进行这种多用途观测，为建立可持续观测网络提供了一种有希望的切实解决办法。
Sustaining an accurate, timely, and global tsunami forecast system remains a challenge for scientific communities. To this end, various viable geophysical monitoring devices have been deployed. However, it is difficult to implement new observation networks in other regions and maintaining the existing systems is costly. This study proposes a new and complementary approach to monitoring the tsunami using existing moving platforms. The proposed system consists of a radar altimeter, Global Navigation Satellite Systems receiver, and an adequate communication link on airborne platforms such as commercial airplanes, drones, or dedicated high-speed aircraft, and a data assimilation module with a deterministic model. We demonstrated, through twin-data experiment, the feasibility of the proposed system in forecasting tsunami at the Nankai Trough of Japan. Our results demonstrated the potential of an airborne tsunami observation as a viable future technology through proxy observations and rigorous numerical experiments. The wide coverage of the tsunamigenic regions without a new observation network is an advantage while various regulatory constraints need to be overcome. This study offered a novel perspective on the developments in tsunami detection and forecasting technology. Such multi-purpose observation using existing platforms provides a promising and practical solution in establishing sustainable observational networks.