SEA LEVEL CHANGES AND HYDRO-ISOSTASY EFFECT THEORY DURING LATE QUATERNARY, IN THE VIEW OF FIELD EXCAVATING SURVEYS

从野外发掘考察晚第四纪海平面变化与水力均衡效应理论

• 批准号: 06808016
• 负责人: KASHIMA Kaoru
• 金额: $ 1.02万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06808016/
• 关键词: SEA LEVEL; HOLOCENE; QUATERNARY; HYDRO-ISOSTASY; DIATOM ANALYSIS; 海水準変動; 更新世; マレーシア; マングローブ; 珪藻

Hydro-isostasy effect theory is a new key to solve a sea level change history during Late Quaternary. Field excavating surveys were done at the coastal marshes and lagoons in the east part of Hokkaido, and in the west part of Kyushu, to examine it to adapt the sea level changes around Japan. We brought the samples taken by the surveys to describe their Lithofaceies, and to presume their sedimentary environments by micro-fossil analyzes, and their sedimentary ages by a carbon-14method.Our research shows that the low sea level stage at about 2500 years ago, and high sea level stage at 1000 years had occurred in the east part of Hokkaido. Because these sea level changes were not fitted with the theoretical calculation model by Prof. Nakata, Kyushu University. We found a new key to improve the theory. In west part of Kyushu, the sea level at 6000 years ago was found below the present sea level at Isahaya area that had been presumed by the Nakata's model.

水文均衡效应理论是解决晚第四纪海平面变化历史的新关键。为了适应日本各地的海平面变化，在北海道东部和九州西部的沿海沼泽和泻湖进行了实地挖掘调查。我们带来了调查采集的样品，描述了它们的岩面，并通过微化石分析推测了它们的沉积环境，并通过碳14法推测了它们的沉积年龄。我们的研究表明，大约2500年前的低海平面阶段，北海道东部出现了1000年的高海平面阶段。因为这些海平面变化并不符合九州大学中田教授的理论计算模型。我们找到了改进理论的新钥匙。在九州西部，中田模型推测的谏早地区6000年前的海平面低于现在的海平面。

项目成果

鹿島薫: "網走湖、サロマ湖の湖底堆積物から得られた珪藻群集" Laguna. (発表予定).

Kaoru Kashima：“从网走湖和佐吕间湖沉积物中获得的硅藻群落”拉古纳（待出版）。

KAORU KASHIMA: "DIATOM ASSEMBLAGES FROM LAKE ABASHIRI AND LAKE SAROMA, NORTH JAPAN." LAGUNA. (IN PRESS).

Kaoru KASHIMA：“来自日本北部网走湖和佐吕间湖的硅藻组合。”

鹿島薫: "網走湖・サロマ湖の湖底堆積物から得られた珪藻群集" Laguna. (発表予定).

Kaoru Kashima：“从网走湖和佐吕间湖沉积物中获得的硅藻群落”拉古纳（待出版）。

鹿島 薫: "マレーシア北西域におけるマングローブ発達過程と海水準変動" 地学雑誌. (発表予定).

Kaoru Kashima：“马来西亚西北部红树林的发展过程和海平面变化”地质杂志（待出版）。