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Ludian earthquake 2014

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Journal Article

Topographic Controls on the Distribution of Coseismic Landslides: A Case Study Using the Coefficient of Variation of the 2014 Ludian, Yunnan, China, Ms6.5 Earthquake Open Access

Xiaoli Chen, Mingming Wang, Yijian Chuan, Yankun Wei, Pengfei Zhang
Journal: Lithosphere
Publisher: GSW
Published: 24 February 2022
Lithosphere (2021) 2021 (Special 2): 6678652.
DOI: https://doi.org/10.2113/2022/6678652
... to predict which areas are prone to landslides based on the analysis of topographic features in the area affected by the 2014 Ludian, Yunnan, China, Ms6.5 earthquake. In our method, the expected slope angle ( ES ), which is related to the local relief in a grid cell, is defined to describe the terrain...
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View PDF for article title, Topographic Controls on the Distribution of Coseismic Landslides: A Case Study Using the Coefficient of Variation of the <span class="search-highlight">2014</span> <span class="search-highlight">Ludian</span>, Yunnan, China, Ms6.5 <span class="search-highlight">Earthquake</span>
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Journal Article

Inferring Critical Slip‐Weakening Distance from Near‐Fault Accelerogram of the 2014 M w 6.2 Ludian Earthquake Available to Purchase

Xiang Chen, Hongfeng Yang, Mingpei Jin
Published: 21 July 2021
Seismological Research Letters (2021) 92 (6): 3416–3427.
DOI: https://doi.org/10.1785/0220210089
.... Figure 2. Distribution of the current application cases of the D c ″ method in natural earthquakes ( Fukuyama and Mikumo, 2007 ; Cruz‐Atienza and Olsen, 2010 ; Fukuyama and Suzuki, 2016 ; Kaneko et al. , 2017 ). The 2014 Ludian earthquake is the focus of this study. Information on focal...
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View PDF for article title, Inferring Critical Slip‐Weakening Distance from Near‐Fault Accelerogram of the <span class="search-highlight">2014</span> M w 6.2 <span class="search-highlight">Ludian</span> <span class="search-highlight">Earthquake</span>
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Journal Article

Source Rupture Process of the 2014 M s 6.5 Ludian, Yunnan, China, Earthquake in 3D Structure: The Strain Green’s Tensor Database Approach Available to Purchase

Yan Luo, Ming‐Che Hsieh, Li Zhao
Published: 16 October 2018
Bulletin of the Seismological Society of America (2018) 108 (6): 3270–3277.
DOI: https://doi.org/10.1785/0120180090
...‐fault rupture process of the 2014 M s 6.5 Ludian earthquake in a structural model with 3D velocity heterogeneity and surface topography. To ensure efficiency in calculating 3D synthetics during slip‐distribution inversions, a database of strain Green’s tensors (SGTs) is established for the structural...
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View PDF for article title, Source Rupture Process of the <span class="search-highlight">2014</span> M s 6.5 <span class="search-highlight">Ludian</span>, Yunnan, China, <span class="search-highlight">Earthquake</span> in 3D Structure: The Strain Green’s Tensor Database Approach
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Add to Citation Manager for Source Rupture Process of the <span class="search-highlight">2014</span> M s 6.5 <span class="search-highlight">Ludian</span>, Yunnan, China, <span class="search-highlight">Earthquake</span> in 3D Structure: The Strain Green’s Tensor Database Approach
Journal Article

Source Parameters of the 2014 M s 6.5 Ludian Earthquake Sequence and Their Implications on the Seismogenic Structure Available to Purchase

Zujun Xie, Yong Zheng, Chengli Liu, Xiong Xiong, Yongdong Li, Xiufen Zheng
Published: 23 September 2015
Seismological Research Letters (2015) 86 (6): 1614–1621.
DOI: https://doi.org/10.1785/0220150085
... depths of the Ludian earthquake sequence may help us to determine the detailed geometric features of the rupture fault and the seismogenic environment. © 2015 by the Seismological Society of America On 3 August 2014, an M s  6.5 earthquake struck Ludian County, Zhaotong City in Yunnan...
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View PDF for article title, Source Parameters of the <span class="search-highlight">2014</span> M s 6.5 <span class="search-highlight">Ludian</span> <span class="search-highlight">Earthquake</span> Sequence and Their Implications on the Seismogenic Structure
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Add to Citation Manager for Source Parameters of the <span class="search-highlight">2014</span> M s 6.5 <span class="search-highlight">Ludian</span> <span class="search-highlight">Earthquake</span> Sequence and Their Implications on the Seismogenic Structure
Includes: Supplemental Content
Journal Article

Compound Fault Rupture in the 2014 M s 6.5 Ludian, China, Earthquake and Significance to Disaster Mitigation Available to Purchase

Xi Li, Xiwei Xu, Yongkang Ran, Jianwen Cui, Yingqing Xie, Fukun Xu
Published: 01 May 2015
Seismological Research Letters (2015) 86 (3): 764–774.
DOI: https://doi.org/10.1785/0220140198
... of America A strong earthquake of M s  6.5 occurred on the margin of the Tibetan plateau in a rural area of Ludian county (Fig.  1a ), northeastern Yunnan Province, China, at 16:30 (Beijing Standard Time) on 03 August 2014. The epicenter (103.3° E, 27.1° N) was located at the intersection...
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View PDF for article title, Compound Fault Rupture in the <span class="search-highlight">2014</span> M s 6.5 <span class="search-highlight">Ludian</span>, China, <span class="search-highlight">Earthquake</span> and Significance to Disaster Mitigation
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Add to Citation Manager for Compound Fault Rupture in the <span class="search-highlight">2014</span> M s 6.5 <span class="search-highlight">Ludian</span>, China, <span class="search-highlight">Earthquake</span> and Significance to Disaster Mitigation
Journal Article

Preliminary Report on the 3 August 2014, M w 6.2/ M s 6.5 Ludian, Yunnan–Sichuan Border, Southwest China, Earthquake Available to Purchase

Jia Cheng, Zhongliang Wu, Jie Liu, Changsheng Jiang, Xiwei Xu, Lihua Fang, Xu Zhao, Wei Feng, Ruifeng Liu, Jianhong Liang, Tianqing Yang
Published: 01 May 2015
Seismological Research Letters (2015) 86 (3): 750–763.
DOI: https://doi.org/10.1785/0220140208
... August 2014, with location 27.1° N, 103.3° E and depth 12 km according to the China National Seismograph Network, striking Ludian county of Yunnan province, southwest China. Detailed information about this earthquake is available at the website of China Earthquake Administration (CEA) ( http...
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View PDF for article title, Preliminary Report on the 3 August <span class="search-highlight">2014</span>, M w 6.2&#x2F; M s 6.5 <span class="search-highlight">Ludian</span>, Yunnan–Sichuan Border, Southwest China, <span class="search-highlight">Earthquake</span>
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Add to Citation Manager for Preliminary Report on the 3 August <span class="search-highlight">2014</span>, M w 6.2&#x2F; M s 6.5 <span class="search-highlight">Ludian</span>, Yunnan–Sichuan Border, Southwest China, <span class="search-highlight">Earthquake</span>
Includes: Supplemental Content
Image
Distribution of landslides triggered by the 2014 Ludian Ms6.5 earthquake. Numerals in grid cells are landslide area ratios (LAR) (see text).

Distribution of landslides triggered by the 2014 Ludian Ms6.5 earthquake. N... Open Access

Published: 24 February 2022
Figure 2 Distribution of landslides triggered by the 2014 Ludian Ms6.5 earthquake. Numerals in grid cells are landslide area ratios (LAR) (see text).
Image
(a) Seismotectonic setting of the 2014 Ludian earthquake and the seismicity in the surrounding region. Mainshock of the 2014 Ludian earthquake is shown as the red stars. Gray solid circles mark the M&gt;3 earthquakes in the region since 2009. The earthquake catalog is obtained from National Earthquake Data Center (see Data and Resources). Focal mechanism plots show the available earthquake focal mechanisms from the Global CMT catalog. The overlapping blue triangles and pink squares are the adjacent accelerometers and broadband stations in Qiaojia and Zhaotong, respectively. Inset: Location of the mainshock (red star). (b) Zoom‐in map of the near‐fault region of the 2014 Ludian earthquake shown in blue rectangular in (a). Gray hollow circles show the relocated aftershocks of the 2014 Ludian earthquake (Cheng et al., 2015). Two dashed lines indicate the conjugated fault planes (Niu et al., 2020), in which the thicker dashed line labeled AA′ is the primary fault that contributed most of the coseismic slip (Niu et al., 2020). Blue triangles mark the accelerometer locations. Red focal mechanism plot shows the focal mechanism of the 2014 Ludian mainshock from Liu et al. (2014). The color version of this figure is available only in the electronic edition.

(a) Seismotectonic setting of the 2014 Ludian earthquake and the seismicity... Available to Purchase

Published: 21 July 2021
Figure 3. (a) Seismotectonic setting of the 2014 Ludian earthquake and the seismicity in the surrounding region. Mainshock of the 2014 Ludian earthquake is shown as the red stars. Gray solid circles mark the M > 3 earthquakes in the region since 2009. The earthquake catalog is obtained
Image
ShakeMap of PGA for the Ludian earthquake on 3 August 2014 (Chen et al., 2015). Green contours show the isoseismal lines. The small black star is the epicenter of the Ludian earthquake. Blue triangles are the strong‐motion stations.

ShakeMap of PGA for the Ludian earthquake on 3 August 2014 ( Chen et al.... Available to Purchase

Published: 01 May 2015
Figure 6. ShakeMap of PGA for the Ludian earthquake on 3 August 2014 ( Chen et al. , 2015 ). Green contours show the isoseismal lines. The small black star is the epicenter of the Ludian earthquake. Blue triangles are the strong‐motion stations.
Image
Comparison of aftershock distribution of the 2014 Ms 6.5 Ludian earthquake and the Ms 5.0 Qiaojia earthquake. The black dotted boxes represent the four concentrating regions of the aftershock distribution of the 2014 Ms 6.5 Ludian earthquake (A, B, C, and D). The color version of this figure is available only in the electronic edition.

Comparison of aftershock distribution of the 2014 M s  6.5 Ludian e... Available to Purchase

Published: 03 March 2021
Figure 8. Comparison of aftershock distribution of the 2014 M s  6.5 Ludian earthquake and the M s  5.0 Qiaojia earthquake. The black dotted boxes represent the four concentrating regions of the aftershock distribution of the 2014 M s  6.5 Ludian earthquake (A, B, C, and D
Journal Article

Refined 3D Seismic‐Velocity Structures and Seismogenic Environment of the M s 6.5 Ludian Earthquake Available to Purchase

Muhammad Shahid Riaz, Yong Zheng, Xiong Xiong, Zujun Xie, Zhiwei Li, Meiqing Song
Published: 17 October 2017
Bulletin of the Seismological Society of America (2017) 107 (6): 3023–3036.
DOI: https://doi.org/10.1785/0120170072
...Muhammad Shahid Riaz; Yong Zheng; Xiong Xiong; Zujun Xie; Zhiwei Li; Meiqing Song Abstract We present relocated seismicity and crustal tomographic images for the regions around the 2014 M s 6.5 Ludian earthquake based on double‐difference tomography. The 2014 Ludian earthquake occurred in a complex...
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View PDF for article title, Refined 3D Seismic‐Velocity Structures and Seismogenic Environment of the M s 6.5 <span class="search-highlight">Ludian</span> <span class="search-highlight">Earthquake</span>
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Distribution of landslides and precise relocation of the Ludian Ms 6.5 earthquake sequences. The precise relocation data (3 August 2014–19 August 2014) of the Ludian Ms 6.5 earthquake sequences were modified from Wang et al. (2014). The focal mechanism solutions of strong aftershocks were modified from Fang et al. (2014). The dashed white rectangular box indicates the area of Figure 3.

Distribution of landslides and precise relocation of the Ludian M s  6.5 ... Available to Purchase

Published: 01 May 2015
Figure 2. Distribution of landslides and precise relocation of the Ludian M s  6.5 earthquake sequences. The precise relocation data (3 August 2014–19 August 2014) of the Ludian M s  6.5 earthquake sequences were modified from Wang et al. (2014) . The focal mechanism solutions of strong
Journal Article

Preliminary Report on the 18 May 2020 M s 5.0 Qiaojia Earthquake, Yunnan, China Available to Purchase

Zhen Fu, Changsheng Jiang, Fengling Yin, Lei Zhang, Xuanye Shen, Lihua Fang, Chunlai Li, Xu Zhang, Lisheng Xu
Published: 03 March 2021
Seismological Research Letters (2021) 92 (4): 2122–2133.
DOI: https://doi.org/10.1785/0220200233
...Figure 8. Comparison of aftershock distribution of the 2014 M s  6.5 Ludian earthquake and the M s  5.0 Qiaojia earthquake. The black dotted boxes represent the four concentrating regions of the aftershock distribution of the 2014 M s  6.5 Ludian earthquake (A, B, C, and D...
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View PDF for article title, Preliminary Report on the 18 May 2020 M s 5.0 Qiaojia <span class="search-highlight">Earthquake</span>, Yunnan, China
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Includes: Supplemental Content
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(a) P‐wave and (b) S‐wave velocity models at different depths from inversion. The black pentagrams mark the 2014 Ms 6.5 Ludian, 2014 Ms 5.0 Yongshan, and 2020 Ms 5.0 Qiaojia earthquakes. The purple dashed line represents the outline of the Xichang basin. JL, Jiulong; LD, Ludian; MB, Mabian; PZH, Panzhihua; QJ, Qiaojia; SM, Shimian;; XC, Xichang; YY, Yanyuan. The color version of this figure is available only in the electronic edition.

(a)  P ‐wave and (b)  S ‐wave velocity models at different depths from inve... Available to Purchase

Published: 02 July 2024
Figure 9. (a)  P ‐wave and (b)  S ‐wave velocity models at different depths from inversion. The black pentagrams mark the 2014 M s  6.5 Ludian, 2014 M s  5.0 Yongshan, and 2020 M s  5.0 Qiaojia earthquakes. The purple dashed line represents the outline of the Xichang basin
Image
Slip distribution of Ludian earthquake obtained by waveform inversion in 3D velocity structure. (a) Epicenter (star) and focal mechanism (focal mechanism plot) of the Ludian earthquake plotted together with the aftershocks between 3 August 2014 and 2 October 2014 (Fang et al., 2014), (b) moment rate function, and (c) slip distribution on the fault plane. The big arrow indicates the strike direction, and the star represents the hypocenter. The slip amplitude is represented by both the darkness of the gray‐scale background and the lengths of the arrows, and the slip direction is indicated by the directions of the arrows. The contours are for the rupture times.The color version of this figure is available only in the electronic edition.

Slip distribution of Ludian earthquake obtained by waveform inversion in 3D... Available to Purchase

Published: 16 October 2018
Figure 3. Slip distribution of Ludian earthquake obtained by waveform inversion in 3D velocity structure. (a) Epicenter (star) and focal mechanism (focal mechanism plot) of the Ludian earthquake plotted together with the aftershocks between 3 August 2014 and 2 October 2014 ( Fang et al. , 2014
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Seismotectonic framework of the Ludian earthquake showing distribution of active faults and epicenters of Mw 4.7 destructive earthquakes (blue circles) recorded during 193 B.C. and A.D. 2010 and the Ludian earthquake (modified from X. Xu, Jiang, et al., 2014). The inset map shows the locations of the Ludian earthquake, the 2001 Kunlunshan earthquake surface rupture zone (red line A), and the 2010 Yushu earthquake surface rupture zone (red line B) in the Tibetan plateau, and the rectangular box represents the figure position. BXF, Baogunao–Xiaohe fault; HF, Haiyuan fault; NCB, North China block; SCB, South China block; XSF, Xianshuihe fault; XJF, Xiaojiang fault. I, Qaidam–Qilian block; II, Bayan Har block; III, Chuandian rhomb block. The white arrow indicates the block motion direction.

Seismotectonic framework of the Ludian earthquake showing distribution of a... Available to Purchase

Published: 23 September 2015
Figure 1. Seismotectonic framework of the Ludian earthquake showing distribution of active faults and epicenters of M w  4.7 destructive earthquakes (blue circles) recorded during 193 B.C. and A.D. 2010 and the Ludian earthquake (modified from X. Xu, Jiang, et al. , 2014 ). The inset map
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(a) Calculated static coulomb stress changes of the historical earthquakes on the fault plane of the Ms 6.5 Ludian earthquake. Black lines are the rupture plane of the historical earthquakes. Gray circles are the epicenters. (b) Calculated static coulomb stress changes on the fault plane of the Ms 5.0 earthquake on 17 August 2014; the red beach ball is the focal mechanism of the Ms 5.0 earthquake on 17 August 2014. The red lines are the rupture plane. (c) Calculated static coulomb stress changes on the fault plane of the Ms 5.0 earthquake on 1 October 2014. The red beach ball is the focal mechanism of the Ms 5.0 earthquake on 1 October 2014. The red lines are the rupture plane. (d) Maximum static stress changes on each fault plane around the seismogenic fault of the Ms 6.5 Ludian earthquake. The red dashed lines are the fault planes with positive value of the coulomb stress changes, and the blue dashed lines are the fault planes with negative value of the coulomb stress changes.

(a) Calculated static coulomb stress changes of the historical earthquakes ... Available to Purchase

Published: 01 May 2015
beach ball is the focal mechanism of the M s  5.0 earthquake on 1 October 2014. The red lines are the rupture plane. (d) Maximum static stress changes on each fault plane around the seismogenic fault of the M s  6.5 Ludian earthquake. The red dashed lines are the fault planes with positive value
Image
The evolution of spatial distributions of b‐values in four periods: (a) 1 July 1974–11 May 2008, (b) 12 May 2008–19 April 2013, (c) 20 April 2013–2 August 2014, and (d) 3 August 2014–16 June 2019. The nodes of the four periods are the occurrence times of three strong earthquakes: 12 May 2008 Wenchuan earthquake, 20 April 2013 Lushan earthquake, and 3 August 2014 Ludian earthquake. The extent of the Sichuan basin is roughly contained by the gray line. The color version of this figure is available only in the electronic edition.

The evolution of spatial distributions of b ‐values in four periods: (a) 1... Available to Purchase

Published: 25 September 2024
May 2008 Wenchuan earthquake, 20 April 2013 Lushan earthquake, and 3 August 2014 Ludian earthquake. The extent of the Sichuan basin is roughly contained by the gray line. The color version of this figure is available only in the electronic edition.
Image
Residuals for horizontal SA at selected eight rock sites during (a) the 2012 Moe earthquake and (b) the 2014 Ludian earthquake. Residuals are calculated using equation (24). The color version of this figure is available only in the electronic edition.

Residuals for horizontal SA at selected eight rock sites during (a) the 201... Available to Purchase

Published: 18 January 2022
Figure 12. Residuals for horizontal SA at selected eight rock sites during (a) the 2012 Moe earthquake and (b) the 2014 Ludian earthquake. Residuals are calculated using equation  (24) . The color version of this figure is available only in the electronic edition.
Image
Hypocentral distance (Rhyp) versus peak ground acceleration (PGA) in the 2014 MS 6.5 Ludian earthquake (triangle), 2017 MS 7.0 Jiuzhaigou earthquake (square), and 2019 MS 6.0 Changning earthquake (circle).

Hypocentral distance ( R hyp ) versus peak ground acceleration (PGA)... Available to Purchase

Published: 25 February 2020
Figure 1. Hypocentral distance ( R hyp ) versus peak ground acceleration (PGA) in the 2014 M S  6.5 Ludian earthquake (triangle), 2017 M S  7.0 Jiuzhaigou earthquake (square), and 2019 M S  6.0 Changning earthquake (circle).