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ChinArray

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Journal Article
Published: 19 January 2024
Seismological Research Letters (2024) 95 (3): 1663–1674.
.... In this study, we used three distinct P ‐wave and Rayleigh‐wave polarization analysis methods to estimate actual sensor orientation of 660 stations from CHINArray‐II in northeastern margin of Tibetan plateau. We found that ∼42.12%–45.76% of the stations are well oriented with the absolute misorientation angle...
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Journal Article
Published: 21 July 2021
Seismological Research Letters (2021) 92 (6): 3586–3601.
... noise level has been observed to be reduced on a worldwide scale. The continuous waveform data at dense broadband seismic stations from ChinArray in eastern North China provides a good opportunity to study the temporal and spatial patterns of the ambient noise level in the region, and to further study...
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Journal Article
Published: 06 October 2020
Bulletin of the Seismological Society of America (2021) 111 (1): 36–49.
...Sijia Zeng; Yong Zheng; Fenglin Niu; Sanxi Ai ABSTRACT From 2011 to 2013, the CHINArray project led by the Institute of Geophysics, China Earthquake Administration, made the first phase deployment of 350 broadband seismometers at the southeastern margin of the Tibetan plateau. The three‐component...
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Backprojection results from (a) <span class="search-highlight">ChinArray</span> and (b) USArray. (c) The combined...
Published: 04 January 2024
Figure 5. Backprojection results from (a) ChinArray and (b) USArray. (c) The combined results by summing the backprojections from ChinArray and USArray. (d) The sources region defined with intersect regions of the source determined by the backprojections from ChinArray and USArray. The same time
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Location and array configuration of the <span class="search-highlight">ChinArray</span> (left) and USArray (right...
Published: 04 January 2024
Figure 1. Location and array configuration of the ChinArray (left) and USArray (right). ChinArray has 379 stations, and USArray has 360. The color version of this figure is available only in the electronic edition.
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Example for the locations of  P ‐wave microseisms from <span class="search-highlight">ChinArray</span> (left colu...
Published: 04 January 2024
Figure 4. Example for the locations of P ‐wave microseisms from ChinArray (left column) and USArray (right column), respectively. The time center is 02:00:00, 3 February 2014. The length of the time window is 4 hr. The period ranges of 2.5–5, 5–10, and 10–20 s are used. The color version
Image
(a) Map of 438 <span class="search-highlight">ChinArray</span> stations (open triangles) in southwest China. The ...
Published: 25 July 2018
Figure 1. (a) Map of 438 ChinArray stations (open triangles) in southwest China. The gray lines are 668 noise cross‐correlation function (NCF) paths with distance 550–650 km whose midpoints are close to array center (black star). The 129 stations comprising these paths are shown as solid
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Effect of array aperture on the resolution of the  P ‐wave microseisms sour...
Published: 04 January 2024
Figure 9. Effect of array aperture on the resolution of the P ‐wave microseisms source locations. For each subplot of (a)–(d), the top panel shows the stations selected from the array for testing, and the bottom panel shows the corresponding relocated results. Panel (a) used the whole ChinArray
Journal Article
Published: 04 January 2024
Seismological Research Letters (2024) 95 (3): 1885–1898.
...Figure 5. Backprojection results from (a) ChinArray and (b) USArray. (c) The combined results by summing the backprojections from ChinArray and USArray. (d) The sources region defined with intersect regions of the source determined by the backprojections from ChinArray and USArray. The same time...
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(a,b) Theoretical array response function at a period of 6.67 s for individ...
Published: 04 January 2024
Figure 3. (a,b) Theoretical array response function at a period of 6.67 s for individual arrays. (c) The combined results by summing the backprojections from ChinArray and USArray. (d) The sources region defined with intersect regions of the source determined by the backprojections from ChinArray
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Global detection scope for teleseismic  P ‐wave microseisms determined by g...
Published: 04 January 2024
Figure 2. Global detection scope for teleseismic P ‐wave microseisms determined by geographical boundaries used for backprojecting data from ChinArray and USArray. The color version of this figure is available only in the electronic edition.
Journal Article
Published: 14 November 2024
Seismological Research Letters (2024)
... earthquake occurred with repeating earthquake sequences. We used waveform data recorded by three digital seismic networks from 2001 to 2019 and the second phase of the CHINArray deployment between February 2013 to March 2016. Because of the sparsity of the network in the study area, we employed an empirical...
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Journal Article
Published: 25 July 2018
Seismological Research Letters (2018) 89 (5): 1817–1825.
...Figure 1. (a) Map of 438 ChinArray stations (open triangles) in southwest China. The gray lines are 668 noise cross‐correlation function (NCF) paths with distance 550–650 km whose midpoints are close to array center (black star). The 129 stations comprising these paths are shown as solid...
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Journal Article
Published: 05 February 2020
Seismological Research Letters (2020) 91 (2A): 891–900.
... ChinArray deployment, we present 1833 moment tensor solutions for small‐to‐moderate earthquakes that occurred between January 2000 and December 2014. Moment magnitudes in the new catalog vary from M w 2.2 to 6.1, and the catalog is complete above M w ∼ 3.5 – 3.6 . The moment tensors are constrained...
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(a) Topographic map showing the Tibetan plateau and its surrounding areas. ...
Published: 06 October 2020
Figure 1. (a) Topographic map showing the Tibetan plateau and its surrounding areas. Black lines indicate boundaries of plates and tectonic blocks. The rectangle indicates the southeastern margin of the Tibetan plateau where the CHINArray phase 1 deployment is located. The margin also marks
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Another example of an enlarged  P ‐wave microseism source map in the North ...
Published: 04 January 2024
Figure 7. Another example of an enlarged P ‐wave microseism source map in the North Pacific for the time centered at 12:00:00, 4 January 2015. Source locations of P ‐wave microseisms of the beam power from the backprojection results of (a) ChinArray, (b) USArray and the combined results
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Source locations and regions of  P ‐wave microseisms confined by the contou...
Published: 04 January 2024
Figure 6. Source locations and regions of P ‐wave microseisms confined by the contour line of the gradient value of the beam power from the backprojection results of (a) ChinArray, (b) USArray, and the combined results of these two arrays through (c) summing and (d) intersecting. (e) Comparison
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Distribution of seismic stations (triangles) and hypocenters of selected ea...
Published: 12 January 2022
Figure 2. Distribution of seismic stations (triangles) and hypocenters of selected earthquakes (circles). The black triangles denote permanent stations, and the magenta triangles denote temporary stations of ChinArray phase I. The magenta star denotes the location of the Yangbi earthquake
Journal Article
Published: 12 January 2022
Seismological Research Letters (2022) 93 (2A): 666–679.
...Figure 2. Distribution of seismic stations (triangles) and hypocenters of selected earthquakes (circles). The black triangles denote permanent stations, and the magenta triangles denote temporary stations of ChinArray phase I. The magenta star denotes the location of the Yangbi earthquake...
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(a) Distribution of stations used in this study; all are within Yunnan Prov...
Published: 05 February 2020
Figure 2. (a) Distribution of stations used in this study; all are within Yunnan Province. Black triangles represent the 24 stations active since 2000, while black stars represent the 22 stations active since 2007. Diamonds represent the 240 ChinArray stations active in 2012–2013. (b) Epicenters