Late Holocene Coastal Morphology and Sea-level Records on Three Small Islands, the South Ryukyus, Japan
Late Holocene Coastal Morphology and Sea-level Records on Three Small Islands, the South Ryukyus, Japan
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日本南琉球三小岛全新世晚期海岸形态和海平面记录
DOI：
10.4157/grj1984b.58.185
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
H. Moriwaki
中科院分区：
文献类型：
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作者：
Y. Ota;A. PirazzoliPaolo;T. Kawana;H. Moriwaki
琉球群岛位于日本本土西南方向，在台湾和九州之间绵延约1200公里。琉球群岛邻近区域的带状结构和主要地貌单元如下（从西向东）：东海的东海大陆架、冲绳海槽（最大深度约2200米）、第四纪火山前缘、琉球地背斜（对应琉球群岛的主要部分）以及菲律宾海上的琉球海沟（最大深度7881米）。琉球群岛被两条主要的左旋走滑断层——吐噶喇海峡和庆良间海峡（或宫古凹陷）分为三组（北琉球、中琉球和南琉球）（小西，1965年）。更新世琉球石灰岩在吐噶喇海峡西南的整个琉球群岛都有分布，高度各异，一些岛屿上有全新世珊瑚礁环绕（例如太田和奥尔，1980年）。琉球群岛的现代珊瑚礁除了在八重山群岛（南琉球）附近和久米岛（中琉球）附近区域呈现堡礁类型（深度为10到20米）外，其余均为岸礁类型。全新世海平面在整个琉球群岛的情况已由皮拉佐利（1978年）、太田和奥尔（1980年）以及小林等人（1982年）进行了讨论，他们提到，一般来说，南琉球的全新世海平面比北琉球和中琉球的要低。本文基于对海蚀凹槽、海滩岩、珊瑚化石和潮间带藤壶的调查，探讨了南琉球的黑岛、小滨岛和波照间岛的全新世海平面记录。此外，还讨论了波照间岛的大型石块与海啸的关系。文中所涉及的相对于……用手持水准仪测量的海拔高度（最后一个单词“pre”不完整，无法准确翻译其相关内容）
The Ryukyu Islands are situated southwest of mainland Japan, and extend about 1,200km between Taiwan and Kyushu. The zonal structure and the main geomorphological units in the adjacent area of the Ryukyu Islands are as follows (from west to east): Tunghai Shelf on the East China Sea, Okinawa Trough (max imum depth: about 2,200m), Quaternary vol canic front, Ryukyu Geoanticline (correspond ing to the main parts of the Ryukyu Islands), and Ryukyu Trench (maximum depth : 7,881m) on the Philippine Sea. The Ryukyu Islands are divided into three groups (the North, the Central and the South Ryukyus) by two major left-lateral strike-slip faults: the Tokara Chan nel and the Kerama Gap (or Miyako Depres sion) (KONISHI, 1965). Pleistocene Ryukyu Limestone occurs throughout the Ryukyus southwest of Tokara Channel with different height, fringed by the Holocene coral reefs on some islands (e.g. OTA and HORS, 1980). Recent coral reefs in the Ryukyus show a fringing reef type except in the areas off the Yaeyama Islands (the South Ryukyus) and off Kume Island (the Central Ryukyus), where small-scale barrier reefs 10 to 20m deep are developed. The Holocene sea-level stands in the entire Ryukyus have been discussed by PIRAZZOLI (1978), OTA and HORS (1980) and KOBA et al. (1982), men tioning that, in general, the Holocene sea-level stands in the South Ryukyus are lower than those in the North and the Central Ryukyus. This paper deals with the Holocene sea-level records in Kuro, Kohama and Hateruma Islands, the South Ryukyus, based on the survey of marine notches, beachrock, coral fossils and intertidal barnacles. In addition, large boulders on Hateruma Island are dis cussed in relation to tsunami. Elevations, measured by hand-levels in relation to the pre
琉球群岛（西南诸岛）
DOI：
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发表时间：
2005
期刊：
全国シンポジウム『中世窯業の諸相』資料集
影响因子：
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作者：
山口 敏;石田 肇;池田榮史
通讯作者：
池田榮史