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http://dx.doi.org/10.7319/kogsis.2016.24.4.083

Application of Fractal Dimension on Consistent Calculation of Coastline Length - Focused on Jeju Island  

Woo, Hee Sook (Department of Geoinformatic Engineering, Inha University)
Kwon, Kwang Seok (Department of Geoinformatic Engineering, Inha University)
Kim, Byung Guk (Department of Geoinformatic Engineering, Inha University)
Cho, Seck Hyun (Department of Geoinformatic Engineering, Inha University)
Publication Information
Journal of Korean Society for Geospatial Information Science / v.24, no.4, 2016 , pp. 83-88 More about this Journal
Abstract
The use of consistent coastlines is an important element for the systematic management of maritime boundaries and the interests of local governments. The Hydrographic and Oceanographic Agency conducted a preliminary survey for consistent coastline production, since 2001. As a result, the length of coastline was different by year. Because of the lack of systematic management, the use of incorrect data, etc. We also changed the coastline on the sea chart to show on a digital map for realization of terrain expression method. However, there was a variation in shoreline length due to various surveying techniques and shoreline extraction methods. In this paper, the characteristics of Jeju-do coastline were analysed by using a modified divider method of fractal dimension. The accuracy of the vectorization was determined by converting the actual distance in the Public Survey Amendment for proper divider use. With 1:5,000 and 1:25,000 digital maps of Jeju-si and Seogwipo-si each fractal dimensions were calculated. Jeju-si=1.14 and Seogwipo-si=1.12 in 1: 5,000. Jeju-si=1.13 and Seogwipo-si=1.10 in 1: 25,000. Calculated fractal dimension were correlated to data from digital maps. It was considered that complexity and scale of coastlines affected. In the future coastline length statistics and minimum ratio of calculated coastline length to original length need to be determined for consistency of coastline length statistics.
Keywords
Fractal Dimension; Modified Divider Method; Complexity; Divider; Consistency;
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