Geomorphology is a dominant factor influencing vegetation distribution in the southern Appalachians, and quantifying landform characteristics is increasingly important for forest ecosystem classification. This study used slope gradient and two previously published geomorphic indices, terrain shape index and landform index that quantify landform shape and protection, to develop a field-based lan...

In this study, LIDAR DEM data was used to obtain a primary landform map in accordance with a well-known methodology. This primary landform map was generalized using the Focal Statistics tool (Majority), considering the minimum area condition in cartographic generalization in order to obtain landform maps at 1:1000 and 1:5000 scales. Both the primary and the generalized landform maps were verifi...

Craters appears on the lunar's surface in high density and the most interesting landform features of any planetary surface. Craters are important landform features on the lunar surface. Hence, detection and analyzing quantitative information (Morphometric) are key role of present day research. Morphometric measuring are useful for understating formation and evolution of surface features. It is ...

The Gulf of Bothnia is a shallow, elongate basin dividing Sweden and Finland, and is located in the centre of the terrain formerly occupied by the Fennoscandian Ice Sheet (FIS). It is considered to have hosted a variety of different glaci-dynamic environments during the evolution of the FIS, but direct glacial geological or geomorphological evidence from the Gulf itself is almost entirely lacki...

MCNAB, W.H. 1993. A topographic index to quantify the effeet of mesoscale landform on site productivity. Can. J, For. Res. 23: 1100-l 107. Landform is related to environmental factors that affect site productivity in mountainous areas. 1 devised a simple index of Iandform attd tested this index as a predictor of site index ín the Blue Ridge physiographic province. ‘fhe landform index is the mea...

ミャンマーにあるシッタン川の河口には，典型的なロート状の平面形状をもつ潮汐卓越型のエスチュアリーが発達し，大潮の際にはタイダルボアが形成される。本研究では，流れ，土砂輸送および地形の相互関係に着目し，シッタン川のエスチュアリーにおける数十年規模の地形変化のメカニズムを明らかにした。現地調査と，地形図および衛星写真の時系列分析によれば，シッタン川の主流路は少なくとも過去100年の間変動しており，20年程度の周期で右岸と左岸に河岸線の前進と後退を交互にもたらしている。このような周期性は，侵食に伴う滑らかな河岸線の発達と，州の付加および排水路の形成に伴う鋸状の河岸線の発達，および村落分布の変化から説明される。河岸侵食のおもな営力はタイダルボアとそれに続く上げ潮の流れであり，これらが河岸下部を侵食して河岸上部の土塊を崩落させることで河岸線は著しく後退し，土砂はエスチュアリーへと供給されている...

Landscapes subject to constant forcing tend to evolve toward equilibrium states in which individual landforms have similar characteristics. Yet, even in landscapes at or near equilibrium, there can be significant variability among individual landforms. Furthermore, sites subject to similar processes and conditions can have different mean landform characteristics. This variability is often ascri...