Exploration for the history of large earthquake along

沿线大地震历史探索

• 批准号: 09680178
• 负责人: MAEMOKU Hideaki
• 金额: $ 1.92万
• 依托单位: Hiroshima University (1999)Yamaguchi University (1997-1998)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680178/
• 关键词: coastal uplift; sessile organism; Nankai Trough; large earthquake; trench; Holocene; crustal movement; Cape Muroto; 完新区

This study aims to reveal the history of huge earthquakes along the Nankai Trough since 5,000 years BP using raised calcareous assemblages adhering to coastal rocks in and around Cape Muroto, southwestern Japan. I collected several boring cores from large assemblages and made an analysis on sedimentation and age of them in fiscal 1977 and 1998. In fiscal 1999, I made isochron map on the growth process of raised assemblages base on the analysis done in the last two years. The result is that stable phase in relative sea level had lasted since 4500 BP through 2700BP and since 2700BP through 1750BP at the present elevation of 9m and 6.7m respectively. Uplift of Cape Muroto since 5000BP is attributed to the combination of intra-plate earthquake and inter-plate earthquake, though accumulative uplift by intra-plate, which occurred at the interval of 2000 years, would be dominant I found some organisms which should have lived in separate tidal range such as coral or calcareous algae in the boring cores. I could know the timings of inter-plate earthquakes through the analysis on age and species of such organisms. The possibility would be handed over to the next project.

这项研究旨在揭示自5000年以来BP自5000年以来，使用粘贴的钙质组合的巨大地震历史，这些组合粘贴到日本西南部穆罗托角及其周围的沿海岩石上。我从大型组合中收集了几个无聊的核心，并在1977年和1998财年的沉积和年龄进行了分析。在1999财年，我在过去两年中对升高组合基础的增长过程制作了等值线图。结果是，自4500 bp至2700bp以来，相对海平面的稳定阶段持续了持续，自2700bp至1750bp以来，目前的海拔9m和670万。 Uplift of Cape Muroto since 5000BP is attributed to the combination of intra-plate earthquake and inter-plate earthquake, though accumulative uplift by intra-plate, which occurred at the interval of 2000 years, would be dominant I found some organisms which should have lived in separate tidal range such as coral or calcareous algae in the boring cores.我可以通过分析这种生物的年龄和物种来了解板间地震的时间。可能性将移交给下一个项目。

项目成果

前杢英明: "室戸岬に分布する隆起環虫類化石群体の成長過程"山口大学教育学部研究論叢. 49巻. 23-36 (1999)

前木英明：“室户岬分布的突起环节动物化石群落的生长过程”山口大学教育学院研究系列第49卷23-36（1999年）。

MAEMOKU Hideki: "Existence of another type of Nankai Earthquake suggested from the uplift history of Cape Muroto since 5000 BP."Chikyu Monthly. no. 24. 76-80 (1999)

前木英树：“从距今 5000 年以来室户岬的隆起历史中可以看出，存在另一种类型的南海地震。”地球月刊。

MAEMOKU Hideki: "Growth process of emerged fossil tubes of ANNELIDA in Cape Muroto, southwestern Japan."Bulletin of the Faculty of Education Yamaguchi University. vol. 49, part 2. 23-36 (1999)

前木秀树：“日本西南部室户岬出现的环节动物化石管的生长过程。”山口大学教育学院通报。

前杢英明: "室戸岬の最近数千年間の隆起様式から推定される新たな南海地震像" 月刊地球. 号外24. 76-80 (1999)

Hideaki Maemoku：“根据室户岬过去几千年的隆起模式估算出的南海地震的新图像”每月特刊 24. 76-80 (1999)。

前杢英明: "隆起環虫類棲管化石の成長過程からみた室戸岬の完新世地震性地殻変動" 日本地理学会発表要旨集. 54. 292-293 (1998)

Hideaki Maemoku：“从高位环节动物管化石的生长过程中看出室户岬的全新世地震地壳变形”，日本地理学会学报，54。292-293（1998）。