The spatial accuracy of unmanned aerial vehicles (UAVs) and the images they capture play a crucial role in mapping process. Researchers are exploring solutions that use image-based techniques such as structure from motion (SfM) to produce topographic maps using UAVs while accessing locations with extremely high minimal surface measurements. Advancements technology have enabled real-time kinemat...

We investigated woody vegetation succession and the rate of topsoil development on shallow landslide scars steep granite slopes in Kagoshima Prefecture, Japan. used our results to predict occurrence cycle landslides. For this study, nine ≥40º were selected. The age ranged from 2 49 years. installed 5 m × quadrats conducted a field study. showed that had smaller Fisher-Williams index diversity e...

Introduction: Slope streaks on Mars, first observed in Viking Orbiter images [1], were imaged in detail by MGS MOC [2,3], and have been observed to form and change over less than decadal time periods [3]. Typically displaying a low albedo relative to their surroundings, they show no detectable relief, are elongated downslope, usually <200 m in width, and usually extend for distances ranging fro...

This thesis presents methods to enrich data modeling and analysis in the geoscience domain with a particular focus on geomorphological applications. First, a short overview of the relevant characteristics of the used remote sensing data and basics of its processing and visualization are provided. Then, two new methods for the visualization of vector-based maps on digital elevation models (DEMs)...

The mode of formation of gullies on Mars, very young erosional–depositional landforms consisting of an alcove, channel, and fan, is one of the most enigmatic problems in martian geomorphology. Major questions center on their ages, geographic and stratigraphic associations, relation to recent ice ages, and, if formed by flowing water, the sources of the water to cause the observed erosion/deposi...

I used multiple approaches to study brook trout invasions in mountainous streams of Idaho and Montana, USA. After studying marked fish in experimental reaches and fish distributions throughout a drainage, I concluded that larger brook trout (95mm) moved more than smaller ones and were probably responsible for most dispersal leading to invasion. Contrary to earlier hypotheses, poor swimming abil...

This paper presents an automated classification system of landform elements based on object-oriented image analysis. First, several data layers are produced from Digital Terrain Models (DTM): elevation, profile curvature, plan curvature and slope gradient. Second, relatively homogenous objects are delineated at several levels through image segmentation. These object primatives are classified as...