Characteristics of seismic energy release of subduction zones—examples from Taiwan
Resource
Engineering Geology 67,17-38
Journal
Engineering Geology 67
Pages
17-38
Date Issued
2002
Date
2002
Author(s)
Jeng, F.S.
Lin, M.L.
Lu, C.Y.
Huang, K.P.
DOI
246246/2006111501254460
Abstract
The characteristics of seismic energy releasing for oceanic subduction & continental collision or subduction zones were explored by a proposed observational approach based on contour maps of seismic energy release on both horizontal & vertical planes, magnitude–energy curve & magnitude–energy–time relationship. It was found that distinct features of energyreleasing
behavior exist for the two types of subduction. The oceanic subduction tends to have a more active background noise by continuously emitting small magnitude earthquakes & to release energy from a wider range of depth owing to the existence
of subducted plate. On the other hand, surficial strata of a continental subduction tend to release almost all of the seismic energy
through a major earthquake with relatively much less long-term noise. Meanwhile, several seismic gaps have been found based on the proposed release energy contour. Together with the tectonic framework & the regional geologic setting, these gaps potentially may involve aseismic zones (e.g., accretionary deposit) or zones awaiting to release its accumulated energy (e.g., the
upper crust). The quite zones prone to yielding major earthquakes are accordingly highlighted for a further study.
Subjects
Seismic energy release
Seismic behavior of subduction zone
Seismicity of Taiwan
Seismic gap
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
8113.pdf
Size
23.19 KB
Format
Adobe PDF
Checksum
(MD5):9a8ca98c1213143d5970547c60b5e96a