Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Zhongwen Zhan"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract Vadose zone soil moisture is often considered a pivotal intermediary water reservoir between surface and groundwater in semi-arid regions. Understanding its dynamics in response to changes in meteorologic forcing patterns is essential to enh
Externí odkaz:
https://doaj.org/article/d72b108b83ba4361b8bbd7cd2f091589
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract The Lithosphere-Asthenosphere Boundary (LAB) beneath oceanic plates is generally imaged as a sharp seismic velocity reduction, suggesting the presence of partial melts. However, the fate of a melt-rich LAB is unclear after these plates desce
Externí odkaz:
https://doaj.org/article/528a8b2b21874a99865eb0584be1d5d5
Autor:
Yan Yang, Zhongwen Zhan, Martin Karrenbach, Auden Reid‐McLaughlin, Ettore Biondi, Douglas A. Wiens, Richard C. Aster
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 13, Pp n/a-n/a (2024)
Abstract The firn layer covers 98% of Antarctica's ice sheets, protecting underlying glacial ice from the external environment. Accurate measurement of firn properties is essential for assessing cryosphere mass balance and climate change impacts. Cha
Externí odkaz:
https://doaj.org/article/732a45c175fc47fbac13fa766fa4520a
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)
Abstract Distributed Acoustic Sensing (DAS) is an emerging technology for earthquake monitoring and subsurface imaging. However, its distinct characteristics, such as unknown ground coupling and high noise level, pose challenges to signal processing.
Externí odkaz:
https://doaj.org/article/b19c350dfdff416384cbd3fee81a2db3
Publikováno v:
Communications Engineering, Vol 2, Iss 1, Pp 1-7 (2023)
Abstract Monitoring seismic activity on the ocean floor is a critical yet challenging task, largely due to the difficulties of physical deployment and maintenance of sensors in these remote areas. Optical fiber sensing techniques are well-suited for
Externí odkaz:
https://doaj.org/article/c5bc7a79612348ec92a52c8f4149d51d
Autor:
Jiuxun Yin, Marcelo A. Soto, Jaime Ramírez, Valey Kamalov, Weiqiang Zhu, Allen Husker, Zhongwen Zhan
Publikováno v:
The Seismic Record, Vol 3, Iss 4, Pp 269-277 (2023)
We present a real-data test for offshore earthquake early warning (EEW) with distributed acoustic sensing (DAS) by transforming submarine fiber-optic cable into a dense seismic array. First, we constrain earthquake locations using the arrival-time in
Externí odkaz:
https://doaj.org/article/8d18f92aecb543558574904e92bd3d85
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Abstract Earthquake focal mechanisms provide critical in-situ insights about the subsurface faulting geometry and stress state. For frequent small earthquakes (magnitude
Externí odkaz:
https://doaj.org/article/668ec99bd51141bb903e26e37ed3c506
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 2, Pp n/a-n/a (2024)
Abstract Underwater Distributed Acoustic Sensing (DAS) utilizes optical fiber as a continuous sensor array. It enables high‐resolution data collection over long distances and holds promise to enhance tsunami early warning capabilities. This researc
Externí odkaz:
https://doaj.org/article/16540bd923574cdab75a13836a715b3f
Publikováno v:
The Seismic Record, Vol 2, Iss 4, Pp 237-247 (2022)
Since 2001, the Southern California Seismic Network has archived continuous waveform data from strong-motion station CI.MIK in Caltech Hall (formerly Millikan Library)—a nine-story reinforced concrete building. Simple spectral analysis of this 20 y
Externí odkaz:
https://doaj.org/article/72660c9d95e94b54838429700cf76557
Autor:
Jiuxun Yin, Weiqiang Zhu, Jiaxuan Li, Ettore Biondi, Yaolin Miao, Zack J. Spica, Loïc Viens, Masanao Shinohara, Satoshi Ide, Kimihiro Mochizuki, Allen L. Husker, Zhongwen Zhan
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 10, Pp n/a-n/a (2023)
Abstract Distributed Acoustic Sensing (DAS) is a promising technique to improve the rapid detection and characterization of earthquakes. Previous DAS studies mainly focus on the phase information but less on the amplitude information. In this study,
Externí odkaz:
https://doaj.org/article/34acf1898e1b4a3492476ac3805b6cfa