The analysis of high resolution airborne lidar topography represents an essential tool for the geomorphological investigation of surface features. The paper presents a detailed lidar-based geomorphological analysis of the ravines cut into the slopes of the upper Vipava valley, NW Slovenia. Research revealed that although the ravines on NE and SW slopes of the Vipava valley are lithologically and tectonically controlled, significant differences in their directions exist. Thus, ravines on opposite slopes are not solely related to the Vipava fault system deformation, but instead reflect a more complex tectonic setting. We believe that the ravines are controlled by second-order faults and fault zones that connect the Vipava fault with adjacent faults. On the SW slopes, these include connecting faults between the Vipava and the south-western Raša fault, with the ravines on the NE slopes formed in fault zones connecting the Vipava and north-eastern Predjama faults.
COBISS.SI-ID: 36068141
This paper proves that effective interpretation of aerial laser scanning digital elevation models requires appropriate data visualization. The new method which is based on diffuse illumination enabled mapping of previously unknown archaeological sites and improve existing maps. For example, new features have been mapped on a site where archaeological field exploration has been taking place for decades. In addition to the studies of the past cultural and natural landscapes it can be effectively used in other scientific fields in which digital elevation model visualizations and automatic feature extraction techniques are indispensable, e.g. geography, geomorphology, cartography, hydrology, glaciology, forestry and disaster management. The technique has been presented at several international scientific conferences, with great success.
COBISS.SI-ID: 32351021
This paper presents, compares, and evaluates different visualisation techniques of high-resolution digital elevation models (DEMs) for visual detection of archaeological features. The methods commonly used in archaeology are reviewed and improvements are suggested. Where a single method must be chosen i.e. for printing or producing digital images for non-professionals, the use of sky-view factor or slope gradient is endorsed, both presented in greyscale. Otherwise interpreters should choose different techniques on different terrain types.
COBISS.SI-ID: 34739757
Interpretation of lidar derived relief models is strongly dependent on the specific characteristics of different data visualization techniques, especially when not combined with extensive field surveying. This chapter addresses different visualization techniques, their specifics, advantages and weaknesses in the context of interpretation of various types of historical landscape features from high resolution digital elevation models. The techniques addressed in detail are analytical hillshading, derivatives of hillshading from different directions (range of hillshadings, mean of hillshadings, PCA of hillshadings), elevation differentiation, trend removal, slope severity, sky-view factor, solar insolation modelling and some others (composite images of a normalised digital surface model and shaded relief, and a greyscale orthophoto image and shaded relief ).
COBISS.SI-ID: 35300909
This chapter in a book published by Springer describes a Geographic Information System (GIS) mapping framework, guidelines and implementation of the internet mapping site for the cultural management of the Mundo Maya region. The challenges of bringing together an extremely large dataset derived from a variety of sources and across five Central American countries were significant. Data of various quality and integrity were integrated and prepared for internet use. Together, these data are able to assist managers in making decisions related to tourism development. The chapter also discusses the ethical and social issues of providing such information and the importance of local ownership of spatial data.
COBISS.SI-ID: 36550189