Abstract
The 1995 Kobe (Hyogoken-Nanbu) Earthquake (Mj 7.2) in Japan, which has been attributed to the Nojima fault of the Rokko-Awaji fault system, resulted in vertical uplifts of 0.19 m at Tarumi and 0.07 m at Akashi, relative to Takasago. Here we evaluate these uplifts in the context of Holocene local tectonics derived from relative sea-level (RSL) records. For the purpose of this study, we estimate the Holocene relative uplift via a comparison study of observed and predicted sea-level variations along the traverse from Takasago to Tarumi and Akashi. These estimates are then applied to evaluate the uplift associated with the fault system responsible for the 1995 earthquake. As a rate of tectonic subsidence between 0.08 and 0.23 mm/yr corresponds well with the RSL index points determined for Takasago during the mid Holocene, uplift rates of 0.38-0.73 and 0.19-0.48 mm/yr are derived for Tarumi and Akashi, respectively, relative to Takasago. This suggests that the cumulated vertical uplift due to the Nojima fault activity, with a recurrence interval of approximately 2000 yr, may contribute at most 25% of the Holocene uplift proposed for the tectonically active coast of western Kobe.
| Original language | English |
|---|---|
| Pages (from-to) | 891-897 |
| Number of pages | 7 |
| Journal | Quaternary Science Reviews |
| Volume | 22 |
| Issue number | 8-9 |
| DOIs | |
| Publication status | Published - Apr 2003 |
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All Science Journal Classification (ASJC) codes
- Global and Planetary Change
- Ecology, Evolution, Behavior and Systematics
- Archaeology
- Archaeology
- Geology
Cite this
Holocene crustal movement along the coast of western Kobe and the 1995 Kobe Earthquake, Japan. / Sato, Hiroshi; Okuno, Jun'Ichi; Katoh, Shigehiro; Nakada, Masao; Maeda, Yasuo; Kobayashi, Fumio.
In: Quaternary Science Reviews, Vol. 22, No. 8-9, 04.2003, p. 891-897.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Holocene crustal movement along the coast of western Kobe and the 1995 Kobe Earthquake, Japan
AU - Sato, Hiroshi
AU - Okuno, Jun'Ichi
AU - Katoh, Shigehiro
AU - Nakada, Masao
AU - Maeda, Yasuo
AU - Kobayashi, Fumio
PY - 2003/4
Y1 - 2003/4
N2 - The 1995 Kobe (Hyogoken-Nanbu) Earthquake (Mj 7.2) in Japan, which has been attributed to the Nojima fault of the Rokko-Awaji fault system, resulted in vertical uplifts of 0.19 m at Tarumi and 0.07 m at Akashi, relative to Takasago. Here we evaluate these uplifts in the context of Holocene local tectonics derived from relative sea-level (RSL) records. For the purpose of this study, we estimate the Holocene relative uplift via a comparison study of observed and predicted sea-level variations along the traverse from Takasago to Tarumi and Akashi. These estimates are then applied to evaluate the uplift associated with the fault system responsible for the 1995 earthquake. As a rate of tectonic subsidence between 0.08 and 0.23 mm/yr corresponds well with the RSL index points determined for Takasago during the mid Holocene, uplift rates of 0.38-0.73 and 0.19-0.48 mm/yr are derived for Tarumi and Akashi, respectively, relative to Takasago. This suggests that the cumulated vertical uplift due to the Nojima fault activity, with a recurrence interval of approximately 2000 yr, may contribute at most 25% of the Holocene uplift proposed for the tectonically active coast of western Kobe.
AB - The 1995 Kobe (Hyogoken-Nanbu) Earthquake (Mj 7.2) in Japan, which has been attributed to the Nojima fault of the Rokko-Awaji fault system, resulted in vertical uplifts of 0.19 m at Tarumi and 0.07 m at Akashi, relative to Takasago. Here we evaluate these uplifts in the context of Holocene local tectonics derived from relative sea-level (RSL) records. For the purpose of this study, we estimate the Holocene relative uplift via a comparison study of observed and predicted sea-level variations along the traverse from Takasago to Tarumi and Akashi. These estimates are then applied to evaluate the uplift associated with the fault system responsible for the 1995 earthquake. As a rate of tectonic subsidence between 0.08 and 0.23 mm/yr corresponds well with the RSL index points determined for Takasago during the mid Holocene, uplift rates of 0.38-0.73 and 0.19-0.48 mm/yr are derived for Tarumi and Akashi, respectively, relative to Takasago. This suggests that the cumulated vertical uplift due to the Nojima fault activity, with a recurrence interval of approximately 2000 yr, may contribute at most 25% of the Holocene uplift proposed for the tectonically active coast of western Kobe.
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UR - http://www.scopus.com/inward/citedby.url?scp=0038069005&partnerID=8YFLogxK
U2 - 10.1016/S0277-3791(02)00251-2
DO - 10.1016/S0277-3791(02)00251-2
M3 - Article
AN - SCOPUS:0038069005
VL - 22
SP - 891
EP - 897
JO - Quaternary Science Reviews
JF - Quaternary Science Reviews
SN - 0277-3791
IS - 8-9
ER -