Modelling spatial variability of periglacial processes based on a global monitoring network

基于全球监测网络模拟冰缘过程的空间变化

• 批准号: 17300294
• 负责人: MATSUOKA Norikazu
• 金额: $ 9.56万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17300294/
• 关键词: Perilacial processes; Permafrost; Environmental change; Monitoring; Modelling

In periglacial environments, global climatic warming triggers degradation of permafrost and seasonal frost, which in turn, may destabilize mountain slopes and change earth surface conditions. Toward establishing a global network for monitoring periglacial processes, we aimed at constructing model experimental sites, standardizing monitoring techniques and expanding the monitoring network. The three-year project provided the following results.1. Monitoring at model experimental sites in High-Arctic Svalbard promoted improvement and standardization of techniques for frost wedging in bedrock, permafrost creep in talus slopes, frost heave and solifluction on soil slopes and thermal contraction cracking in lowlands, as well as revealed the timing and magnitude of these processes. A variety of geophysical sounding techniques permitted us to visualize the subsurface internal structure and 3-D distribution of ice/water in the ground. Coupling the results from monitoring and sounding, we developed models of the temporal and spatial variations in the periglacial processes.2. The monitoring network was expanded to a variety of periglacial environments in the world, ranging from polar regions (Antarctica and Alaska) to mid-latitude high mountains (Swiss and Japanese Alps, Tibet and Mongolia). The obtained data on frozen ground and periglacial processes enhanced the provisional models to be globally applicable models.3. Cryoturbation and weathering processes, which cannot be monitored directly, laboratory scale models enabled us to estimate the environmental conditions for the processes.4. Base of the above results we predicted future environmental changes associated with permafrost and seasonal frost degradation.

在冰山周环境中，全球气候变暖触发了多年冻土和季节性霜冻的降解，而季节性霜冻又可能破坏山坡稳定并改变地面表面条件。为了建立一个用于监视冰川植物过程的全球网络，我们旨在构建模型实验站点，标准化监视技术并扩展监视网络。为期三年的项目提供了以下结果1。高北极svalbard的模型实验地点的监测促进了基岩中霜楔的技术的改进和标准化，在距骨斜坡上的永久弗罗斯特蠕变，冰霜坡度，霜冻倾斜和土壤斜率上的溶解度以及低地的热收缩裂纹，以及揭示这些过程的时间和幅度。各种地球物理发声技术使我们能够可视化地下的地下内部结构和3-D分布。结合了监测和声音的结果，我们开发了冰期过程中时间和空间变化的模型。2。监测网络扩展到世界上各种冰山环境，范围从极地地区（南极洲和阿拉斯加）到中纬度山脉（瑞士和日本阿尔卑斯山，西藏和蒙古）。在冻结地面和周期过程中获得的数据增强了临时模型，成为全球适用的模型3。不能直接监控的冷冻扰动和风化过程，实验室规模模型使我们能够估算该过程的环境条件。4。上述结果的基础我们预测了与多年冻土和季节性霜冻降解相关的未来环境变化。

项目成果

Permafrost sounding(2003-2005) in the source area of the Yellow River, northeastern Tibet

西藏东北部黄河源区多年冻土探测（2003-2005年）

• 发表时间: 2007
• 期刊: Geographical Review of Japan 80
• 作者: Ikeda;A.;Sueyoshi;T.;Matsuoka N.;Ishii;T. and Uchida;Y.
• 通讯作者: Y.

Permafrost sounding(2003-2005)in the source area of the Yellow River, northeastern Tobet

托拜特东北部黄河源区多年冻土探测（2003-2005）

• 发表时间: 2007
• 期刊: Geographical Review of Japan 80
• 作者: Ikeda;A.;Sueyoshi;T.;Matsuoka N.;Ishii;T. and Uchida;Y.
• 通讯作者: Y.

Frost weathering and rockwall erosion in the eastern Swiss Alps : Long-term(1994-2006) observations

瑞士东部阿尔卑斯山的霜冻风化和岩壁侵蚀：长期（1994-2006）观测

• 期刊: Geomorphology (in press)
• 作者: Matsuoka;N.
• 通讯作者: N.

High resolution monitoring of ice-wedge crasking by multiple techniqiues

多种技术对冰楔破裂的高分辨率监测

• 发表时间: 2007
• 作者: Matsuoka;N. and Christiansen;H. H.
• 通讯作者: H. H.

Monitoring periglacial processes : towards construction of a global network

监测冰缘过程：构建全球网络

• 发表时间: 2005
• 期刊: Geomorphology (未定)(印刷中)
• 作者: Matsuoka;N.
• 通讯作者: N.