By Bartlett, Darius J.; Wright, Dawn J
A well timed guides for the UN overseas yr of the sea, this can be the 1st publication to hide the elemental and utilized clinical difficulties in deep sea and coastal technological know-how utilizing distant sensing and GIS know-how. it is going to encourage destiny research.
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Additional info for Marine and coastal geographical information systems
Unfortunately, where the coast is the focus of study, this modelling is made particularly difficult, partly due to the multiplicity of professions, stake holders and other groups with interests at the shore; and partly due to the inherently fuzzy and indeterminate nature of so many coastal entities and phenomena. We have already seen that there is a multiplicity of different sectors, public and private, with interests at the coast. It is essential to establish the user-base for whom the coastal zone GIS is intended, and the view of the coast and its component elements that is relevant to this constituency, since this operational context will have a direct bearing on the more technologically-oriented questions of hardware and software selection, and the overall architecture of the system.
Were then entered into separate database tables. At each along-shore change in attribute, the start and end vertices for that particular segment were logged alongside the attribute properties in the thematic tables. A series of SQL macros were developed for proximity searching, in order to match and snap these start- and end-point vertices to the nearest vertices on the digitised line, thus linking the geometric and the thematic databases. Further macros and ad hoc querying, as appropriate, allowed some, admittedly limited, investigation of spatial interrelationships between variables of interest.
345–358. Langran, G. , 1991, Processing EEZ Data in a marine geographic information system. In 1991 EEZ Symposium on Mapping and Research, Portland, Oregon, edited by Lockwood, M. A. S. Geological Survey Circular 1092), pp. 127–129. , 1999, Data models for marine and coastal geographic information systems, in this volume, Chapter 3. Li, R. , 1993, Development of an integrated marine geographic information system. Marine Geodesy, 16, pp. 293–307. , Qian, L. , 1995, A hypergraph-based conceptual model for bathymetric and related data management.
Marine and coastal geographical information systems by Bartlett, Darius J.; Wright, Dawn J