We have studied the reorganisation of drainage patterns in response to the tectonically driven emergence of a small ridge (South Rough Ridge) along the flank of a larger ridge (Rough Ridge) as described by previous workers in the Central Otago region of New Zealand. We compare the results of a numerical model of landscape evolution (CASCADE) in which stream incision is linearly related to local...

Landform evolution modelling (LEM) provides an avenue for simulating how a landscape may evolve over extended time periods of thousands years. CAESAR-Lisflood LEM which includes hydrologic model (TOPMODEL) and hydraulic (Lisflood) can be used to assess the proposed final landform morphology mine site by would 1000-year period. The accuracy future simulations depends on calibration validation pa...

We introduce a novel method for classification and mapping of landforms based on the idea that the Earth’s surface can be described by the two complementary measures: relief-independent, local spatial pattern and the magnitude of the relief itself. The first of these two measures is sufficient to classify and map the landforms. At the core of the method is the concept of geomorphon (geomorpholo...

As a typical landform class of Qinghai-Tibetan Plateau, glacier is widely distributed in alpine terrain. However, field measurement is impossible in those areas because of complex terrain and adverse weather. At first, on the basis of analyzing the features of glacier image spectrum, object shape, spatial relations and environment distribution including terrain and climate, this paper combines ...

Landform classification, which is a key topic of geography, great significance to wide range fields including human construction, geological structure research, environmental governance, etc. Previous studies landform classification generally paid attention the topographic or texture information, whilst watershed spatial has not been used. This study developed new method based on geospatial str...

The “Danxia landform” is an erosional landform type originally defined in China. It is characterized by redcolored sandstones and steep cliffs, and developed via long-term erosion. Detailed quantitative geomorphometric studies of the characteristics of Danxia landforms in China have not yet been conducted. Using GIS, we conducted DEM-based geomorphometric analyses of 42 watersheds on Mt. Danxia...

A GIS method for modeling landscapes to predict total soil depth and the depth of different soil layers is presented. The method is based on terrain analysis using a DEM and the combined use of the Topographic Wetness Index (TWI) also known as the Compound Topographic Index (CTI) and the Multi-resolution Valley Bottom Flatness index (MrVBF). Examples of the output for several catchments show th...

A robust new approach for describing and segmenting landforms which is directly applicable to precision farming has been developed in Alberta. The model uses derivatives computed from DEMs and a fuzzy rule base to identify up to 15 morphologically defined landform facets. The procedure adds several measures of relative landform position to the previous classification of Pennock et al. [39, 40]....

Extensive evidence of landform-scale martian geomorphic changes has been acquired in the last decade, and number range examples surface activity have increased as more high-resolution imagery acquired. Within present-day Mars climate, wind frost/ice are dominant drivers, resulting large avalanches material down icy, rocky, or sandy slopes; sediment transport leading to many scales aeolian bedfo...

Existing methods for land surface form characterisation often focus on relatively simple landform element classifications and do not evaluate results with large scale participant experiments. This piece of research takes a semantics-grounded approach to characterising the landform valley. Based on definitions three algorithms to characterise valleys in a fuzzy way are introduced. Comparison of ...