Evaluation of Holocene crustal movement in the Ako Plain, western Japan

Evaluation of Holocene crustal movement in the Ako Plain, western Japan
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日本西部赤穗平原全新世地壳运动评价

DOI:
10.1191/0959683606hl948rp
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发表时间:
2006
期刊:
The Holocene
影响因子:
--
通讯作者:
Shigehiro Katoh
Shigehiro Katoh
中科院分区:
--
文献类型:
--
作者:
Hiroshi P. Sato;J. Okuno;Shigehiro Katoh

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全新世海平面观测数据是从日本西部的赤穗平原获得的。在这个沿海地区,通过比较相对海平面(RSL)变化的观测结果和理论预测,对全新世地壳运动进行了评估,除了最后一次冰消蚀造成的地壳响应之外。通过对岩心沉积物中硅藻组合和沉积硫的分析以及放射性碳测年数据来得出 RSL 变化。每年+0.2毫米到-0.2毫米之间的地壳运动速率,经预测修正后,与观测到的RSL指数点非常吻合。由于重建的古平均海平面(PMSL)限制在7300 cal。英国石油公司(BP)对赤穗平原海岸的构造沉降率的最佳估计可能为每年 0-0.2 毫米。在此期间,神户西部构造活跃海岸沿垂海和玉松相对于赤穗的构造抬升率分别为 0.3-0.7 毫米/年和 0.11-0.45 毫米/年。从赤穗到神户西部的横断面的相对隆起主要是六甲-淡路断层系(RFS)活动断层引起的地壳运动的结果。
Holocene sea-level observations have been obtained from the Ako Plain in western Japan. In this coastal area, the Holocene crustal movements have been evaluated, except the crustal response due to the last deglaciation, by comparing observations and theoretical predictions of relative sea-level (RSL) variations. Analyses of diatom assemblages and sedimentary sulphur in core sediments were used along with radiocarbon dates to derive the RSL variations. A crustal movement rate between +0.2 mm and-0.2 mm per year, corrected for the prediction, fits well with the observed RSL index points. Owing to the constraint of the reconstructed palaeo-mean sea level (PMSL) at 7300 cal. BP, the coast of the Ako Plain may have the best estimate of a tectonic subsidence rate of 0-0.2 mm/yr. The tectonic uplift rates along the tectonically active coast of western Kobe were derived to be 0.3-0.7 mm/yr and 0.11-0.45 mm/yr for Tarumi and Tamatsu, respectively, relative to Ako over the period concerned. The relative uplift along the traverse from Ako to western Kobe is primarily the result of the crustal movement resulting from the active faulting of the Rokko-Awaji fault system (RFS).
极地冰盖的流变学
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
Azuma;N.;東信彦
通讯作者: 東信彦
神户西部海岸的全新世地壳运动和 1995 年日本神户地震
DOI: --
发表时间: 2003
期刊: Quaternary Science Reviews 22
影响因子: --
作者:
Sato;H.et al.(他5人)
通讯作者: H.et al.(他5人)
DOI: 10.1017/s0033822200013904
发表时间: 1993-01-01
期刊: RADIOCARBON
影响因子: 8.3
作者:
STUIVER, M;REIMER, PJ
通讯作者: REIMER, PJ
DOI: 10.4116/jaqua.34.135
发表时间: 1995-08
期刊: The Quaternary Research (daiyonki-kenkyu)
影响因子: --
作者:
H. Fukusawa
通讯作者: H. Fukusawa