Optical polarization–based seismic and water wave sensing on transoceanic cables

doi:10.1126/science.abe6648

GSTDTAP > 气候变化

DOI	10.1126/science.abe6648
	Optical polarization–based seismic and water wave sensing on transoceanic cables
	Zhongwen Zhan; Mattia Cantono; Valey Kamalov; Antonio Mecozzi; Rafael Müller; Shuang Yin; Jorge C. Castellanos
	2021-02-26
发表期刊	Science
出版年	2021
英文摘要	Instrumenting the vast ocean floor is difficult and expensive but important for monitoring earthquakes and tsunamis. Zhan et al. used the polarization of regular telecommunication traffic to detect earthquakes and water swells in a 10,000-kilometer-long fiber-optic submarine cable (see the Perspective by Wilcock). The deep-water Curie cable is not as noisy as terrestrial counterparts, allowing the authors to detect strain from the cable. Results from the 9-month observation period showed how current submarine fiber-optic cables can also be used as a geophysical tool. Science , this issue p. [931][1]; see also p. [882][2] Seafloor geophysical instrumentation is challenging to deploy and maintain but critical for studying submarine earthquakes and Earth’s interior. Emerging fiber-optic sensing technologies that can leverage submarine telecommunication cables present an opportunity to fill the data gap. We successfully sensed seismic and water waves over a 10,000-kilometer-long submarine cable connecting Los Angeles, California, and Valparaiso, Chile, by monitoring the polarization of regular optical telecommunication channels. We detected multiple moderate-to-large earthquakes along the cable in the 10-millihertz to 5-hertz band. We also recorded pressure signals from ocean swells in the primary microseism band, implying the potential for tsunami sensing. Our method, because it does not require specialized equipment, laser sources, or dedicated fibers, is highly scalable for converting global submarine cables into continuous real-time earthquake and tsunami observatories. [1]: /lookup/doi/10.1126/science.abe6648 [2]: /lookup/doi/10.1126/science.abg4479
领域	气候变化 ; 资源环境
URL	查看原文
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/315941
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Zhongwen Zhan,Mattia Cantono,Valey Kamalov,等. Optical polarization–based seismic and water wave sensing on transoceanic cables[J]. Science,2021.
APA	Zhongwen Zhan.,Mattia Cantono.,Valey Kamalov.,Antonio Mecozzi.,Rafael Müller.,...&Jorge C. Castellanos.(2021).Optical polarization–based seismic and water wave sensing on transoceanic cables.Science.
MLA	Zhongwen Zhan,et al."Optical polarization–based seismic and water wave sensing on transoceanic cables".Science (2021).