Development of hybrid simulator with physical and statistical models for landform change

开发具有地形变化物理和统计模型的混合模拟器

• 批准号: 16500647
• 负责人: KUMAMOTO Takashi
• 金额: $ 2.43万
• 依托单位: Okayama 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 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16500647/
• 关键词: landform simulator; geomorphometric measurement; DEM resolution; landslide magnitude-frequency; 5m-DEM; slope frequency distribution; curvature frequency distribution; stream network model

The main purposes of the landform simulator in this research project are (1)to model the magnitude-frequency relationship of landsides in the mountain section of river streams under the assumption that large scale of landslides are induced by the large ground shaking caused by the earthquakes and the frequency is related to that of seisimicity, and (2)to include physical relationship satisfying the law of constancy of mass along the river stream. We conducted following three subjects to achieve these purposes :(a)Discuss the relationship between DEM (digital elevation model) resolution and geomorphometric results such as slope and laplacian and show that at least 25m or more detailed DEM is needed to simulate the landform change along river stream.(b)Calculate seismic magnitude-frequency relationship in Japanese seismotectonic provinces and discuss the quantitative evaluation how to include this relationship into landform simulator.(c)Develop the landform simulator programming code running on Microsoft-Windows by the use of the Borland C++ Builder, which are capable of reading initial topography, reading parameters such as diffuse coefficient, retreat coefficient, denudation rate, uplift rate and base altitude, and visualize results. We simulate the landform change in the Akaishi mountains central Japan by using this code and the result show the appearance of steep scarp in cross section of landforms and slope histogram, which could not conduct previous simulators.

该研究项目中地面模拟器的主要目的是（1）模拟河流山区山坡的幅度频率关系，假设大规模的陆上滑坡是由地震引起的大地面震动引起的，频率与赛症的频率相关，并且（2）与（2）相关，以及（2）与群落相处的物理关系。我们进行了以下三个主题来实现这些目的：（a）讨论DEM（数字高度模型）分辨率和地貌测量结果之间的关系，例如斜坡和Laplacian，并表明需要至少25m或更详细的DEM，以模拟地面沿河流的地面变化。 （c）通过使用Borland C ++构建器来开发在Microsoft-Windows上运行的Landform模拟器编程代码，该代码能够读取初始地形，读取参数，例如弥漫系数，撤退系数，剥离率，剥离率，提升率和基础高度以及可视化结果。我们通过使用此代码模拟了日本中部Akaishi山脉的地面变化，结果显示了地面和斜率直方图的横截面中陡峭的陡峭斜向，这无法进行以前的模拟器。

项目成果

Magnitude-Frequency distribution derived from earthquake and active fault catalogues based on seismotectonic province map of the Japanese islands

基于日本列岛地震构造省图的地震和活动断层目录推导的震级频率分布

• 发表时间: 2004
• 期刊: Active Fault Research 24
• 作者: Kumamoto;T.;Yamada;S.
• 通讯作者: S.

山地の地形計測のためのDEMの解像度に関する一考察

山区地形测量DEM分辨率研究

• 发表时间: 2005
• 期刊: 写真測量とリモートセンシング 44(1)
• 作者: 田中 靖;大森博雄
• 通讯作者: 大森博雄

Examination of aperiodicity parameters for the Brownian Passage Time model using intraplate paleoearthquake data in Japan

使用日本板内古地震数据检查布朗通过时间模型的非周期性参数

• 发表时间: 2005
• 期刊: Active Fault Research 25
• 作者: Kumamoto;T.;Hamada
• 通讯作者: Hamada

Examination of aperiodicity parameters for the Brownian Passeage Time model using intraplate paleoearthquake data in Japan

使用日本板内古地震数据检查布朗通过时间模型的非周期性参数

• 发表时间: 2005
• 期刊: Active Fault Research 25
• 作者: Kumamoto;T.
• 通讯作者: T.