Imaging Shallow Crustal Structure in the Upper Mississippi Embayment Using Local Earthquake Waveform Data

2016 ◽  
Vol 106 (4) ◽  
pp. 1394-1406
Author(s):  
Shu‐Chioung Chi Chiu ◽  
Charles A. Langston ◽  
Jer‐Ming Chiu ◽  
Mitch Withers
Keyword(s):  
Crustal Structure ◽  
Mississippi Embayment ◽  
Waveform Data ◽  
Upper Mississippi Embayment ◽  
Local Earthquake

CRUSTAL STRUCTURE AND VERTICAL MOVEMENTS OF THE UPPER MISSISSIPPI EMBAYMENT AND OZARK UPLIFT

2017 ◽  
Author(s):  
Stephen S. Gao ◽  
◽  
Lin Liu ◽  
Kelly H. Liu ◽  
Kevin L. Mickus ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Mississippi Embayment ◽  
Vertical Movements ◽  
Upper Mississippi Embayment

scholarly journals Twin enigmatic microseismic sources in the Gulf of Guinea observed on intercontinental seismic stations

2013 ◽  
Vol 194 (1) ◽  
pp. 362-366 ◽  
Author(s):  
Yingjie Xia ◽  
Sidao Ni ◽  
Xiangfang Zeng
Keyword(s):  
North America ◽  
Temporal Variation ◽  
Crustal Structure ◽  
Source Region ◽  
Broad Band ◽  
Active Volcano ◽  
Gulf Of Guinea ◽  
Waveform Data ◽  
Seismic Stations ◽  
The Earth

Abstract Based on studies of continuous waveform data recorded on broad-band seismograph stations in Africa, Europe and North America, we report evidences for two temporally persistent and spatially localized monochromatic vibrating sources (around 0.036 and 0.038 Hz, respectively) in the Gulf of Guinea, instead of just one source (0.038 Hz or 26 s) found 50 yr ago. The location of the 0.036 Hz source is close to the Sao Tome Volcano, therefore it may be related to volcano processes. However, the 0.038 Hz source cannot be explained with known mechanisms, such as tectonic or oceanic processes. The most likely mechanism is volcano processes, but there is no reported active volcano in source region. Such repetitive vibration sources may provide valuable tools for detecting temporal variation of crustal structure of the Earth.

3D crustal structure of the northwest Alborz region (Iran) from local earthquake tomography

2016 ◽  
Vol 109 (3) ◽  
pp. 389-400 ◽  
Author(s):  
M. Rezaeifar ◽  
E. Kissling ◽  
Z. H. Shomali ◽  
M. Shahpasand-Zadeh
Keyword(s):  
Crustal Structure ◽  
Local Earthquake Tomography ◽  
Local Earthquake ◽  
Alborz Region
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