Infrastructure Engineering - Research Publications
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ItemUnderstanding cadastral mapsWILLIAMSON, IAN ; ENEMARK, STIG ( 1996)Cadastral maps are generally regarded as an essential part of the land management infrastructure in most countries yet there is often misunderstanding about their characteristics and role. Due to the vast range of different cadastral systems and resulting cadastral maps, it is very difficult to describe a “typical” cadastral map. It is the authors’ view that it is also very difficult, if not impossible, to understand the characteristics and functions of a cadastral map without understanding the respective cadastral system. As a result this paper endeavours to examine the characteristics and functions of cadastral maps by examining the cadastral mapping systems in Denmark and Australia. The Danish system is a typical “old world” European system which had its history in land taxation. The Australian systems could be considered “new world” systems which have been more heavily influenced by land market considerations. Even though the Australian and Danish cadastral systems are very similar, understanding the characteristics and functions of cadastral maps in the two systems remains difficult. This study discusses the different characteristics of cadastral maps which have been designed for different users or functions. In particular the paper concentrates on the issues concerned with developing digital multi-purpose cadastral maps. The major conclusions from the paper are that the creation and maintenance of multi-purpose digital cadastral maps is a difficult and complex task. This complexity arises to a large degree because the characteristics of a cadastral map designed to serve traditional land markets or land registration purposes are quite different from the characteristics of a modern multi-purpose cadastral map.
ItemFramework for discussion of digital spatial data flow within cadastral systemsEffenberg, Wolfgang W. ; ENEMARK, STIG ; Williamson, Ian P. ( 1999)Current technology and digital products such as digital cadastral maps have put pressure on institutions involved in the cadastral process to cooperate to maximise efficiencies. To discuss ways that the entire cadastral process and its users can take advantage of the opportunities offered by the current and possible future technology it is necessary to study the entire cadastral process as a single system. The authors contend that the maintenance of the digital cadastral map in any cadastral system must be viewed as a process that involves all entities in the cadastral process. This paper attempts to provide a framework, which encompasses all the spatial processes of the cadastral system, to discuss and define spatial data maintenance with a focus on the digital cadastral map. The paper proposes the concept of data flows from information systems analysis techniques to establish this discussion framework. The terminology and definitions of spatial cadastral map maintenance are defined as a basis for reviewing the digital cadastral map in a number of different jurisdictions in Australia and Europe. An examination of the processes undertaken by each of the entities or institutions within the cadastral system highlights some possible future spatial data maintenance models.