DOI: 10.1016/j.quascirev.2014.03.010
Scopus记录号: 2-s2.0-84898655660
论文题名: Vertical tectonic crustal movements along the Japanese coastlines inferred from late Quaternary and recent relative sea-level changes
作者: Okuno J. ; Nakada M. ; Ishii M. ; Miura H.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 91 起始页码: 42
结束页码: 61
语种: 英语
英文关键词: Glacio-hydro isostatic adjustment
; Last Interglacial
; Mid-Holocene
; Relative sea-level
; Thermosteric sea-level change
; Tide gauge
; Vertical crustal movement
Scopus关键词: Earthquakes
; Forecasting
; Geochronology
; Glacial geology
; Landforms
; Sea level
; Thermal expansion
; Tide gages
; Uncertainty analysis
; Glacio-hydro isostatic adjustment
; Last interglacial
; Mid-Holocene
; Relative sea level
; Sealevel change
; Tide gauges
; Vertical crustal movement
; Tectonics
; coastal zone
; crustal movement
; glacioisostasy
; Quaternary
; sea level change
; subduction
; terrace
; thermal expansion
; tide gauge
; timescale
; Antarctica
; Arctic
; Greenland
; Greenland Ice Sheet
英文摘要: Observed relative sea-level (RSL) changes during the past ~130kyr make it possible to evaluate the vertical crustal movement due to several tectonic processes such as the subduction of oceanic plates. Here we infer average rates of tectonic crustal movement along the Japanese coastlines on three typical timescales of ~50yr, ~6kyr and ~125kyr based on tide gauge and Holocene RSL observations and the altitudes of marine terraces formed at the Last Interglacial (LIG) phase at ~125ka. The rates on a timescale of ~50yr are derived from tide gauge data, thermosteric sea-level changes due to thermal expansion of the oceans and predictions due to the glacio-hydro isostatic adjustment (GIA) for the last deglaciation and also recent melting of the mountain glaciers and Greenland and Antarctic ice sheets. Those for ~6kyr and ~125kyr are based on the RSL observations and the predictions by GIA modelling, considering uncertainties for temporal changes in eustatic sea-level for the mid- to late-Holocene and LIG phase. The inferred rates for ~50yr are significantly different from those for ~125kyr in most sites, particularly for sites along the coastline from eastern Hokkaido to northeastern Japan, Shikoku and south Kyushu facing the Pacific Ocean. In these regions, the rates for ~125kyr and ~50yr are positive (uplift) and negative (subsidence), respectively. Also, the observed RSL changes at ~6ka are consistent with the inferred RSL changes using the rates for ~125kyr and GIA-predictions in many sites, but inconsistent with those for ~50yr in most sites except for a few sites. These results suggest that the rates on a timescale of ~50yr are not representative of the tectonic crustal movements for timescales longer than ~6kyr in most sites along the Japanese coastlines. However, the inferred rates on these timescales may be useful in discussing the recurrence of megathrust earthquake with its interval of ~1kyr such as the 2011 earthquake off the Pacific coast of Tohoku. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60321
Appears in Collections: 过去全球变化的重建
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作者单位: National Institute of Polar Research, 10-3 Midoricho, Tachikawa, Tokyo 190-8518, Japan; Japan Agency for Marine-Earth Science and Technology, Yokohama 236-0001, Japan; Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan; Meteorological Research Institute of the Japan Meteorological Agency, Tsukuba 305-0052, Japan
Recommended Citation:
Okuno J.,Nakada M.,Ishii M.,et al. Vertical tectonic crustal movements along the Japanese coastlines inferred from late Quaternary and recent relative sea-level changes[J]. Quaternary Science Reviews,2014-01-01,91