Crustal structure of the Paleozoic Kunlun orogeny from an active-source seismic profile between Moba and Guide in East Tibet, China

2011 ◽  
Vol 19 (4) ◽  
pp. 994-1007 ◽  
Author(s):  
Zhongjie Zhang ◽  
Simon Klemperer ◽  
Zhiming Bai ◽  
Yun Chen ◽  
Jiwen Teng
Keyword(s):  
Crustal Structure ◽  
Seismic Profile ◽  
Active Source

scholarly journals Crustal structure along the Aleutian island arc: New insights from receiver functions constrained by active-source data

2013 ◽  
Vol 14 (8) ◽  
pp. 2977-2992 ◽  
Author(s):  
Helen A. Janiszewski ◽  
Geoffrey A. Abers ◽  
Donna J. Shillington ◽  
Josh A. Calkins
Keyword(s):  
Crustal Structure ◽  
Receiver Functions ◽  
Island Arc ◽  
Aleutian Island ◽  
Active Source ◽  
Source Data

Overview of seismic methods for Urban Underground Space

2020 ◽  
pp. 1-64
Author(s):  
Zhenning Ma ◽  
Rongyi Qian
Keyword(s):  
Urban Space ◽  
Active Faults ◽  
Seismic Profile ◽  
Geological Structure ◽  
Underground Space ◽  
Underground Engineering ◽  
Active Source ◽  
Seismic Methods ◽  
Ambient Noise Method ◽  
Wave Methods

The development of Urban Underground Space (UUS) has become an effective way to solve the problem of urban space. Seismic methods have achieved good results in underground engineering construction, active faults detection, urban geological structure detection and other fields. Active source seismic methods in UUS include reflection methods, refraction methods, surface wave methods and vertical seismic profile (VSP) methods and so on. Ambient noise method is also rising gradually, which becomes an important method of urban underground space detection in the future, because it overcomes the problem that the active source method is interfered by urban noise. We briefly summarize these methods and introduce the application examples of UUS.

An Analysis on Deep Crustal Structure Along the Onshore-Offshore Seismic Profile Across the Binghai (Littoral) Fault Zone in Ne South China Sea

2004 ◽  
Vol 47 (5) ◽  
pp. 954-961 ◽  
Author(s):  
Ming-Hui ZHAO ◽  
Xue-Lin QIU ◽  
Chun-Ming YE ◽  
Kan-Yuan XIA ◽  
Ci-Liu HUANG ◽  
...  
Keyword(s):  
South China Sea ◽  
Fault Zone ◽  
South China ◽  
Crustal Structure ◽  
Seismic Profile ◽  
China Sea ◽  
Deep Crustal Structure

Three-dimensional crustal Vp and Vs structures beneath the southern segment of the Tan-Lu fault revealed by active source and earthquake data

2020 ◽  
Vol 223 (3) ◽  
pp. 2148-2165
Author(s):  
Yunpeng Zhang ◽  
Baoshan Wang ◽  
Tao Xu ◽  
Wei Yang ◽  
Weitao Wang ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Yangtze River ◽  
Velocity Structure ◽  
Eastern China ◽  
P Wave ◽  
Arrival Times ◽  
Local Earthquakes ◽  
Active Source ◽  
First Arrival ◽  
Earthquake Data

SUMMARY The 2400-km-long Tan-Lu fault, the largest deformation zone in eastern China, plays a decisive role in the seismicity, regional tectonics and mineral deposits distributions. However, the velocity structure beneath the Tan-Lu fault, particularly in the southern segment, is poorly imaged due to the lack of local earthquakes. To obtain a high-resolution crustal structure image, we carried out an active source experiment by firing mobile airgun sources along the Yangtze River in the Anhui Province in October 2015. We manually picked 4118 P wave and 1906 Swave first arrival times from the airgun signals. We also collected 28 957 P wave and 26 257 S wave first arrival times from local earthquakes in a larger area. 3-D crustal velocity images beneath the southern segment of the Tan-Lu fault and surrounding areas are studied using traveltime tomography. Compared with the local earthquake data, the active source data provide better constraints on the upper crustal structure, which further refines the resolution of the lower-crust structure. The Vp and Vs crustal structures are consistent with the local geological settings, and earthquakes are primarily clustered near faults and are spatially correlated with low-velocity zones. Strong velocity contrasts are observed across the Tan-Lu fault zone, which is the main factor controlling local anomalies. The high Vp, Vs and Vp/Vs beneath the Qinling-Dabie orogenic belt and the Middle-Lower Yangtze River Metallogenic Belt may relate to Mesozoic lithospheric delamination and asthenospheric upwelling. These results also demonstrate that the mobile large-volume airgun sources are promising tools for 3-D crustal structure surveys.

Crustal structure of the Mid-Polish Trough beneath the Teisseyre–Tornquist Zone seismic profile

1999 ◽  
Vol 314 (1-3) ◽  
pp. 145-160 ◽  
Author(s):  
M. Grad ◽  
T. Janik ◽  
J. Yliniemi ◽  
A. Guterch ◽  
U. Luosto ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Seismic Profile
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