清晨好,您是今天最早来到科研通的研友!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您科研之路漫漫前行!

Photonic seismology in Monterey Bay: Dark fiber DAS illuminates offshore faults and coastal ocean dynamics

海湾 海底管道 海洋学 地质学 地震学 环境科学
作者
Nathaniel J. Lindsey,Clyde J. Dawe,Jonathan B. Ajo-Franklin
出处
期刊:California Digital Library - EarthArXiv 被引量:5
标识
DOI:10.31223/osf.io/7bf92
摘要

Emerging fiber-optic sensing technology coupled to existing subsea telecommunications cables can provide access to unprecedented seafloor observations of both ocean and solid earth phenomena. During March 2018, we conducted a Distributed Acoustic Sensing (DAS) measurement campaign along a buried fiber-optic cable typically used for data transfer to and from a scientific cabled observatory offshore Monterey Bay called the Monterey Accelerated Research System (MARS) node. During a 4-day period of MARS node maintenance the MARS cable was repurposed as an evenly-spaced ~10,000-component, 20-kilometer-long DAS array. Full wavefield observation of a M3.4 earthquake that occurred 45-km inland near Gilroy, CA illuminated multiple recently-mapped and previously unmapped submarine fault zones, which were observed to slow the propagating wavefront and act as point scatterers reradiating body-wave energy as Scholte waves. In the shallow water of the MARS cable (h<100m), dominant noise (f~0.1-0.3 Hz) was found to match the predicted seafloor pressure field induced by shoaling ocean surface waves, otherwise known as the primary ocean microseism. DAS amplitudes track sea state dynamics during a storm cycle in the Northern Pacific, correlating with features of local bay buoy and onshore broadband seismometer data streams. We also observed secondary microseisms (f~0.5-2 Hz). Decomposing the incoming and outgoing wavefield components of the primary microseism noise we validated the Lougnet-Higgins-Hasselmann theory that bi-directional ocean wind-waves setup by the coast reflection undergo nonlinear wave mixing to cause the secondary microseisms, even when the outgoing energy is only 1% of the incoming energy. We observe additional noise patterns at higher and lower frequencies that are consistent with previous point sensor observations of post-low-tide tidal bores (f~1-5 Hz), storm-induced sediment transport (f~0.8-10 Hz), infragravity waves (f~0.01-0.05 Hz), and breaking internal waves (f~0.001 Hz). The number of geophysical interactions observed over this brief four-day dark fiber recording evidences the introduction of an important new technique for seafloor science.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
研友_ZzrWKZ完成签到 ,获得积分10
6秒前
勤劳的颤完成签到 ,获得积分10
7秒前
顺利问玉完成签到 ,获得积分10
15秒前
乐乐乐乐乐乐应助哥哥采纳,获得10
26秒前
coolkid应助哥哥采纳,获得10
26秒前
somin应助哥哥采纳,获得10
26秒前
满意的芸完成签到 ,获得积分10
29秒前
李爱国应助eulota采纳,获得10
31秒前
Serein完成签到,获得积分10
35秒前
任昱琦完成签到 ,获得积分10
36秒前
飞云完成签到 ,获得积分10
41秒前
上官若男应助科研通管家采纳,获得10
41秒前
抽疯的电风扇13完成签到 ,获得积分0
41秒前
emmm发布了新的文献求助10
45秒前
研究生完成签到 ,获得积分10
45秒前
啦啦啦啦完成签到 ,获得积分10
48秒前
量子星尘发布了新的文献求助10
50秒前
彭于晏应助emmm采纳,获得10
58秒前
DrKe完成签到,获得积分10
59秒前
chengmin完成签到 ,获得积分10
1分钟前
轻语完成签到 ,获得积分10
1分钟前
ssassassassa完成签到 ,获得积分10
1分钟前
空中风也完成签到 ,获得积分10
1分钟前
马铃薯完成签到,获得积分10
1分钟前
哥哥完成签到,获得积分10
1分钟前
Cold-Drink-Shop完成签到,获得积分10
1分钟前
Noah完成签到 ,获得积分0
1分钟前
1分钟前
奔跑的小熊完成签到 ,获得积分10
1分钟前
啊哈哈哈完成签到,获得积分10
1分钟前
量子星尘发布了新的文献求助10
2分钟前
zhuhe完成签到,获得积分10
2分钟前
沧笙踏歌应助net80yhm采纳,获得10
2分钟前
快乐的芷巧完成签到,获得积分10
2分钟前
羊羔蓉完成签到,获得积分10
2分钟前
叶痕TNT完成签到 ,获得积分10
2分钟前
net80yhm完成签到,获得积分10
2分钟前
2分钟前
子月之路完成签到,获得积分10
2分钟前
漱石枕流完成签到 ,获得积分10
2分钟前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 2400
Ophthalmic Equipment Market by Devices(surgical: vitreorentinal,IOLs,OVDs,contact lens,RGP lens,backflush,diagnostic&monitoring:OCT,actorefractor,keratometer,tonometer,ophthalmoscpe,OVD), End User,Buying Criteria-Global Forecast to2029 2000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 588
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
T/CIET 1202-2025 可吸收再生氧化纤维素止血材料 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3957101
求助须知:如何正确求助?哪些是违规求助? 3503148
关于积分的说明 11111376
捐赠科研通 3234212
什么是DOI,文献DOI怎么找? 1787802
邀请新用户注册赠送积分活动 870776
科研通“疑难数据库(出版商)”最低求助积分说明 802292