Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network
Abstract We analyze Global Navigation Satellite System (GNSS) within the San-in Shear Zone (SSZ), Southwest Japan, in order to clarify the width of the inelastic deformation zone in the lower crust beneath it. We assumed multiple discrete fault dislocations distributed below the seismogenic depth in...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-02-01
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| Series: | Earth, Planets and Space |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40623-020-1138-z |
| _version_ | 1819058972683927552 |
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| author | Angela Meneses-Gutierrez Takuya Nishimura |
| author_facet | Angela Meneses-Gutierrez Takuya Nishimura |
| author_sort | Angela Meneses-Gutierrez |
| collection | DOAJ |
| description | Abstract We analyze Global Navigation Satellite System (GNSS) within the San-in Shear Zone (SSZ), Southwest Japan, in order to clarify the width of the inelastic deformation zone in the lower crust beneath it. We assumed multiple discrete fault dislocations distributed below the seismogenic depth in a channel to represent inelastic deformation in the lower crust. Kinematic models at 68% confidence level at three profiles indicate that deformation can be explained by a deep inelastic deformation zone with a width of 0.5–56.0 km, 0.5–79.5 km, and 0.0–58.5 km, for the Eastern, Central and Western profiles, respectively; and a relative moving rate between the two blocks sandwiching the zone of 6.2–8.0 mm/year. In Eastern Tottori, the center of the estimated inelastic zone coincides with the source region of the 1943 Tottori earthquake. In Central and Western Tottori, the channel is in agreement with the source regions of the 2000 Western and the 2016 Central Tottori earthquake. Current GNSS network provides a limited contribution to constraining the width of the deformation in the lower crust. |
| first_indexed | 2024-12-21T14:03:42Z |
| format | Article |
| id | doaj.art-e3362727a8a24c7295443100c41506d0 |
| institution | Directory Open Access Journal |
| issn | 1880-5981 |
| language | English |
| last_indexed | 2024-12-21T14:03:42Z |
| publishDate | 2020-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Earth, Planets and Space |
| spelling | doaj.art-e3362727a8a24c7295443100c41506d02022-12-21T19:01:17ZengSpringerOpenEarth, Planets and Space1880-59812020-02-0172111010.1186/s40623-020-1138-zInelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS networkAngela Meneses-Gutierrez0Takuya Nishimura1Institute for Advanced Research, Nagoya UniversityDisaster Prevention Research Institute, Kyoto UniversityAbstract We analyze Global Navigation Satellite System (GNSS) within the San-in Shear Zone (SSZ), Southwest Japan, in order to clarify the width of the inelastic deformation zone in the lower crust beneath it. We assumed multiple discrete fault dislocations distributed below the seismogenic depth in a channel to represent inelastic deformation in the lower crust. Kinematic models at 68% confidence level at three profiles indicate that deformation can be explained by a deep inelastic deformation zone with a width of 0.5–56.0 km, 0.5–79.5 km, and 0.0–58.5 km, for the Eastern, Central and Western profiles, respectively; and a relative moving rate between the two blocks sandwiching the zone of 6.2–8.0 mm/year. In Eastern Tottori, the center of the estimated inelastic zone coincides with the source region of the 1943 Tottori earthquake. In Central and Western Tottori, the channel is in agreement with the source regions of the 2000 Western and the 2016 Central Tottori earthquake. Current GNSS network provides a limited contribution to constraining the width of the deformation in the lower crust.https://doi.org/10.1186/s40623-020-1138-zSan-in Shear ZoneGNSSIntraplate deformationStrain concentration |
| spellingShingle | Angela Meneses-Gutierrez Takuya Nishimura Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network Earth, Planets and Space San-in Shear Zone GNSS Intraplate deformation Strain concentration |
| title | Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network |
| title_full | Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network |
| title_fullStr | Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network |
| title_full_unstemmed | Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network |
| title_short | Inelastic deformation zone in the lower crust for the San-in Shear Zone, Southwest Japan, as observed by a dense GNSS network |
| title_sort | inelastic deformation zone in the lower crust for the san in shear zone southwest japan as observed by a dense gnss network |
| topic | San-in Shear Zone GNSS Intraplate deformation Strain concentration |
| url | https://doi.org/10.1186/s40623-020-1138-z |
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