Formative Proceesses and Geomorphological Characteristics of Coastal Sand Dunes from the view point of sediment material

从沉积物角度看滨海沙丘的形成过程及地貌特征

• 批准号: 16500646
• 负责人: KODAMA Yoshinori
• 金额: $ 2.57万
• 依托单位: Tottori University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16500646/
• 关键词: Enshu-nada Coastal Dune; Katamachi Coastal Dune; Tottori Coastal Dune; Paleo Environments; Availability of Sediments; Wave and Blown Sand Processes; Wind Tunnel Experiment; Vegetation Management by Sandblasting; ボーリングコア試料; 粘土混濁水の電気伝導度分析; 古環境の変遷

We conducted research on historical development, formation processes and characteristic of geomorphology of coastal sand dunes in Japan from the sediment material points of view. Three field sites were surveyed intensively: the Enshu-nada Sand Dune at Shizuoka Prefecture, the Katamachi Sand Dune at Niigata Prefecture and the Tottori Sand Dune at Tottori Prefecture. The width of the coastal dunes along the Enshu-nada increases from 100m to more than 1,200m towards the east from the mouth of the Tenryu River. In contrast, moving away from the mouth of the Tenryu River, the beach width decreases from 260m to 30m. We surveyed size distributions of beach sediments and beach profiles and concluded that grain size distribution of berm deposits had clue to development of coastal dunes. Interaction between wave processes and blown sand ones were discussed. On the other hand, the Katamachi Sand Dune similarly illustrates that moving away from the mouth of the Seki River; size of the coastal sand … More dune increases. Mineral compositional surveys over the drainage basin of the Seki River revealed that longitudinal dunes were developed at c.a. 80,000-50,000y.B.P., triggered by the volcanic activity of the Myoukou Volcano. Historical formative processes of the Katamachi Sand Dune explain dimensional variations of the dune. Formation processes of the Tottori Sand Dune were surveyed with boreholes (named as B5 and B6) and microtremor measurements. With facies, sequence stratigraphy, diatom, pollen, paleo magne and electorical conductivity analyses as well, we are still discussing paleo environmental changes before the formation of the sand dune. In addition, formation processes of the Oigo-Suribachi at the Tottori Sand Dune were surveyed by wind tunnel experiments and proposed its conservational provision. As for countermeasures for meadow overgrowth at the Tottori Sand Dune, we conducted field experiments for vegetation mapagement using sandblasting and seawater spraying and got some valuable results. Less

我们从沉积物质的角度对日本沿海沙丘的历史发展、形成过程和地貌特征进行了深入调查：静冈县远州滩沙丘、新泻县片町沙丘。鸟取县和鸟取沙丘 远州滩沿岸沙丘的宽度从 100m 增加到超过 100m。从天龙川河口向东 1,200m 处，远离天龙河河口，海滩宽度从 260m 减小到 30m。护堤沉积物的分布为沿海沙丘的发展提供了线索，另一方面，片町沙丘也同样说明了远离河口的过程​​。对关河流域的矿物成分调查显示，在距今 80,000-50,000 年左右，Myoukou 火山的火山活动引发了纵向沙丘的形成。片町沙丘的形成过程解释了沙丘的尺寸变化 鸟取沙丘的形成过程被调查。通过岩相、层序地层学、硅藻、花粉、古磁石和电导率分析，我们仍在讨论沙丘形成之前的古环境变化。通过风洞实验调查了鸟取沙丘的Oigo-Suribachi的过程并提出了针对草甸过度生长的对策。在鸟取沙丘，我们利用喷砂和海水喷洒进行了植被测绘的野外实验，并获得了一些有价值的结果。

项目成果

鳥取砂丘における植生被覆に伴う飛砂量の減少

鸟取沙丘植被覆盖导致风沙量减少

• 发表时间: 2006
• 期刊: 鳥取大学地域学部紀要 地域学論集 3
• 作者: 木村一郎;千葉賢;河合隆行;森井 愛
• 通讯作者: 森井 愛

Investigations for buried paleo channel of the Sendai River underneath the Tottori Sand Dune, Japan

日本鸟取沙丘下仙台河埋藏古河道的调查

• 发表时间: 2005
• 作者: Yoshinori;Kodama;Shoumei;Okada;Daisuke;Mori;Shinya;Nakatsukasa
• 通讯作者: Nakatsukasa

Investigations of borehole sediments of the Tottori Coastal Sand Dune for discussing paleo environments of the initial stage of the sand dune

鸟取滨海沙丘钻孔沉积物调查探讨沙丘初期的古环境

• 发表时间: 2004
• 期刊: Bulletine of the Geological Society of Tottori No.8
• 作者: Shoumei;Okada;Yoshinori;Kodama;Shuji;Maeta;Hiroshi;Iriguchi;Sayoko;Nagahata
• 通讯作者: Nagahata

Distribution of Tephra outcrops at the Tottori Coastal Sand Dune and its relationship to the paleo channel of the Sendai River

鸟取滨海沙丘火山灰露头的分布及其与仙台河古河道的关系

• 发表时间: 2006
• 作者: Yuka;Enomoto;Yoshinori;Kodama;Chiemi;Arita
• 通讯作者: Arita

Sandblastingによる植生管理の試み-鳥取砂丘の草原化対策-

利用喷砂进行植被管理的尝试 -将鸟取沙丘变成草原的措施-

• 发表时间: 2007
• 作者: 岡国昭明;小玉芳敬;前田修司;入口大志;長畑佐世子;小玉芳敬
• 通讯作者: 小玉芳敬