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Fluctuations in relative sea-level during the past 3000 yr in the Onnetoh estuary, Hokkaido, northern Japan
https://ir.soken.ac.jp/records/3939
https://ir.soken.ac.jp/records/393934b87772-c8a3-475b-82a7-f3b2e8733454
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-08-28 | |||||
| タイトル | ||||||
| タイトル | Fluctuations in relative sea-level during the past 3000 yr in the Onnetoh estuary, Hokkaido, northern Japan | |||||
| タイトル | ||||||
| タイトル | Fluctuations in relative sea-level during the past 3000 yr in the Onnetoh estuary, Hokkaido, northern Japan | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
SAWAI, Yuki
× SAWAI, Yuki× NASU, Hiroo× YASUDA, Yoshinori |
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| 著者別名 |
那須, 浩郎
× 那須, 浩郎 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This paper presents the results of a litho-, bio- and chronostratigraphical study of the evidence for late Holocene sea-level change, palaeoseismicity and coastal evolution at the Onnetoh estuary, northwest Japan. Alternating peat and mud couplets record evidence for four falls in relative sea-level since ca. 2500 cal. yr BP. In the latest instance, intertidal mud with a salt-tolerant diatom and plant macrofossil flora is abruptly overlain by a freshwater peat containing abundant macrofossil remains of the conifer Picea glehnii. These stratigraphical changes record an abrupt change from tidal flat to upland, with no intermediate transition through saltmarsh. In the other three instances, the stratigraphy records a more gradual fall in relative sea-level, as shown by gradational stratigraphical contacts and transitional diatom and plant macrofossil assemblages. Once established, these freshwater peat communities are gradually submerged and become overlain by saltmarsh and then intertidal muds. Radiocarbon ages and tephra date the emergence events to 2700-1750 (gradual), 1350-950 (gradual), 650-300 (gradual) and ca. 400 cal. yr BP (abrupt). These ages are similar to a sequence of emergence events recorded at the Akkeshi estuary, 70 km to the west of the present study site. The three falls in relative sea-level may record coseismic, or swift post-seismic, uplift caused by plate boundary subduction earthquakes on the Kurile subduction zone. The oldest relative sea-level fall is correlated with the so-called 'Yayoi regression', dated to 1500-3000 cal yr BP in other parts of Japan. | |||||
| 書誌情報 |
Journal of Quaternary Science en : Journal of Quaternary Science 巻 17, 号 5-6, p. 607-622, 発行日 2002-07 |
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| 出版者 | ||||||
| 出版者 | Wiley-Blackwell | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 02678179 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1002/jqs.708 | |||||
| 関連名称 | 10.1002/jqs.708 | |||||
| 権利 | ||||||
| 権利情報 | © 2002 John Wiley & Sons, Ltd | |||||
