FORMATION PROCESSES OF TAFONI DUE TO SALT WEATHERING

盐风化导致的 TAFONI 形成过程

• 批准号: 09680182
• 负责人: WARAGAI Tetsuya
• 金额: $ 1.02万
• 依托单位: NIHON UNIVERSITY
• 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 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680182/
• 关键词: TAFONI; ROCK MEAL; GROWTH RATES; SALT WEATHERING; ROCK TEMPERATURE; WATER CONTENTS; SEA SPLASH; JAPAN; 乾湿風化; 風化作用; 風送塩; モニタリング

Tafoni are small hollow, which rock materials composing of the tafoni are removed resulting from weathering. There are observed in arid and coastal regions. It has been thought that the tafoni originate from the wind erosion and the wave action. In this study, formation processes, conditions, and rates of the tafoni are analyzed at north of Matsusima bay (Oku-Matsushima), southwest of Boso Peninsula, and south of Kii Peninsula, based on the annual observation using the data logger.Analyses mainly are carried out for Oku-matsushima, 1) sizes (length, width, and depth) and grain size for the rock meal of the tafoni, 2) production volume of the rock meal, 3) field monitoring of conditions for tafoni formation (rock temperature, water contents of slope, temperature, humidity, insolation, wind direction, etc), 4) rock properties (physical properties, mineral components, dissolution properties).The shape of the tafoni similar to half of the spheroid, and sizes of the tafoni is decrease with distance from beach lines and altitudes. The rock meal mainly product in winter seasons. It was considered that the growth rates of the tafoni are 10ィイD12ィエD1〜10ィイD13ィエD1 year, based on the production volume of the rock meal. Some salt minerals (Halite and Bloedite) are observed in winter season at the inner wall of tafoni showing the dry conditions. As the tafoni develop at the coastal region, these salt minerals are crystallized by adhere of sea splash including ions of NaィイD1+ィエD1, MgィイD12+ィエD1, ClィイD1-ィエD1, and SOィイD24ィエD2ィイD12-ィエD1.

Tafoni是小空心的，由于风化而导致岩石组成的岩石材料被拆除。在干旱和沿海地区观察到。人们认为塔福尼源于风侵蚀和波动作用。在这项研究中，在Matsusima湾（Oku-Matsushima）北部（Boso Peninsula西南）和KII半岛南部的Matsusima湾（Oku-Matsushima）北部分析了Tafoni的形成过程，条件和速率，并基于年度观察，使用数据logger.analyses进行了年度观察。 tafoni, 2) production volume of the rock meal, 3) field monitoring of conditions for tafoni formation (rock temperature, water contents of slope, temperature, humidity, isolation, wind direction, etc), 4) rock properties (physical properties, mineral components, dissolution properties).The shape of the tafoni similar to half of the sphereroid, and Sizes of the tafoni is decreased with distance from beach lines and altitudes.岩石餐主要是冬季的产品。据认为，根据岩石粉的生产量，Tafoni的增长率为10 D12 D1-10 D13 D1年。冬季，在塔福尼的内壁上观察到一些盐矿物质（盐酸盐和蓝石），显示干燥条件。随着沿海地区的Tafoni的发展，这些盐矿物质通过海洋飞溅的粘附而结晶，包括NAII D1+IYE D1，MGYI D12+IYE D1，CLI D1-IYE D1和SOI D24IYE D2-IYE D2-IYE D2-IYE D12-IYE D12-IYE D1 D1。

项目成果

藁谷哲也: "タフォニ形成プロセスの測定システム―石巻湾、宮戸島のスタックに発達するタフォニを対象として―"日本大学文理学部自然科学研究所紀要. 34号. 101-110 (1999)

Tetsuya Waratani：“塔福尼形成过程的测量系统 - 以石卷湾和宫户岛堆积物中的塔福尼为目标 -”日本大学文理学院自然科学研究所通报第 34 期。101-110。 (1999)

WARAGAI, T.: "DATA LOGGING SYSTEM FOR THE FORMATION PROCESSES OF TAFONI IN A COASTAL ENVIRONMENT, ISHINOMAKI BAY, NORTHEASTERN JAPAN"PROCEEDINGS OF THE INSTITUTE OF NATURAL SCIENCES NIHON UNIVERSITY. NO. 34. 101-110 (1999)

WARAGAI, T.：“日本东北部石卷湾沿海环境中 TAFONI 形成过程的数据记录系统”日本大学自然科学研究所论文集。