書誌事項
- タイトル別名
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- Relative Sea-level Changes and Co-seismic Uplifts Over Six Millennia, Preserved in Beach Deposits of the Kujukuri Strand Plain, Pacific Coast of the Boso Peninsula, Japan.
- ボウソウ ハントウ クジュウクリハマ ヘイヤ ノ カイヒン タイセキブツ カラ モトメタ カコ 6000ネンカン ノ ソウタイテキカイ スイジュン ヘンドウ ト ジシン リュウキ
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抄録
Relative sea-level changes and variations in shoreline progradation rate over the past 6000 years are elucidated from the elevations of the beach deposits, their 14C ages, and the geographic position of each locality on the Kujukuri strand plain, Pacific coast of the Boso Peninsula, central Japan. These past sea-levels were +4 to +6 m above the modern sea-level (high-stand stage) at 6000 to 5300 calendar years B.P., +3 to + 4.5 m (stable stage) at 5000 to 3500 years B.P., declined from +1.2-+ 3.4 m to + 0.5-+ 2.1 m (falling stage) at 3300 to 2250 years B.P., and were-1.5--1 m to + 1 m (stable stage) from 1650 to 250 years B.P. ; sea level is 0 m at present. The detailed changes revealed by this new method strongly imply the existence of several rapid uplifts (0.4 to 1.2 m per event) at 5100 to 5500 years B.P., 3400 years B.P., 2400 years B.P., 1650 years B.P., and 0-250 years B.P. The uplifts were co-seismic, because the speed of occurrence seems to have been high, and the events are generally associated with so-called “tsunami deposits.” Co-seismic uplift in this region has not been reported previously from historical records or geological evidence.
収録刊行物
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- 地学雑誌
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地学雑誌 110 (5), 650-664, 2001
公益社団法人 東京地学協会
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詳細情報 詳細情報について
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- CRID
- 1390001204230358272
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- NII論文ID
- 110000379945
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- NII書誌ID
- AN00322536
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- ISSN
- 18840884
- 0022135X
- http://id.crossref.org/issn/0022135X
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- NDL書誌ID
- 5959759
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可