scholarly journals Presumed Asperities for the Anticipated Tokai Earthquake (Seismic Activity Change in the Tokai Region: Part 4)

2007 ◽  
Vol 59 (4) ◽  
pp. 271-284 ◽  
Author(s):  
Shozo MATSUMURA
Keyword(s):  
Seismic Activity ◽  
Activity Change ◽  
Tokai Earthquake ◽  
Tokai Region

SEISMIC ACTIVITY CHANGE PRECEDING THE SUMATRA GIANT EARTHQUAKE SERIES, 2004M9.0, 2005M8.6, AND 2007M8.5

2009 ◽  
Vol 03 (01) ◽  
pp. 17-24
Author(s):  
SHOZO MATSUMURA
Keyword(s):  
Stress Concentration ◽  
Seismic Activity ◽  
Plate Boundary ◽  
Activity Change ◽  
Locked Plate ◽  
The Real ◽  
Giant Earthquake ◽  
Induced Stress ◽  
Earthquake Series ◽  
Significant Change

The seismicity along the Sunda trench was examined from the viewpoint of whether or not any significant change preceded the major earthquakes. Based on the seismicity of M5 and greater earthquakes, a growth of activated zones with time approaching the final breakage was detected. These activated zones well predicted the positions of the real asperities for the following 2004 M9.0, 2005 M8.6, and 2007 M8.5 events. Such a feature in seismicity change can be explained by introducing an assumption that a quasi-static slip progressed on a weakly locked plate boundary prior to the final breakage, and resulted in an activation corresponding to the induced stress concentration. At present, there are two activated zones unresolved. Accepting the limit in validity of the above hypothesis, I would like to give warnings for imminent earthquake occurrences in these zones.

Change in seismic activity in the Tokai region related to weakening and strengthening of the interplate coupling

2006 ◽  
Vol 417 (1-2) ◽  
pp. 17-31 ◽  
Author(s):  
Akio Yoshida ◽  
Kohji Hososno ◽  
Toshimitsu Tsukakoshi ◽  
Akio Kobayashi ◽  
Hiromi Takayama ◽  
...  
Keyword(s):  
Seismic Activity ◽  
Interplate Coupling ◽  
Tokai Region

Shale, Quakes, and High Stakes: Regulating Fracking-Induced Seismicity in Oklahoma, USA and Lancashire, UK

2019 ◽  
Vol 3 (1) ◽  
pp. 1-14
Author(s):  
Miriam R. Aczel ◽  
Karen E. Makuch
Keyword(s):  
United States ◽  
Hydraulic Fracturing ◽  
Shale Gas ◽  
Seismic Activity ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
High Volume ◽  
The United States ◽  
Horizontal Drilling ◽  
Induced Seismic Activity

High-volume hydraulic fracturing combined with horizontal drilling has “revolutionized” the United States’ oil and gas industry by allowing extraction of previously inaccessible oil and gas trapped in shale rock [1]. Although the United States has extracted shale gas in different states for several decades, the United Kingdom is in the early stages of developing its domestic shale gas resources, in the hopes of replicating the United States’ commercial success with the technologies [2, 3]. However, the extraction of shale gas using hydraulic fracturing and horizontal drilling poses potential risks to the environment and natural resources, human health, and communities and local livelihoods. Risks include contamination of water resources, air pollution, and induced seismic activity near shale gas operation sites. This paper examines the regulation of potential induced seismic activity in Oklahoma, USA, and Lancashire, UK, and concludes with recommendations for strengthening these protections.

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