4. CONCLUDING REMARKS
The coupling effect of two dynamic factors i.e.
different tide elevations and terrain variations,
complicates the terrain analysis for tideland areas.
The proposed scheme is developed to cope with this
complexity effectively. The relative error may reach
5% in terms of the area.
The features of the proposed scheme are threefold:
1. The tidal variation for shoreline change detection
is considered.
2. The interrelated characteristics between image
coastlines and the tidal variations are fully
utilized.
3. Three dimensional analysis is possible. Which
means that the volume change might be
detected provided that the historical data set is
sufficient.
The applicability of the proposed scheme relies on the
temporal resolution of satellite images for constructing
the reference DTM. As more and more resource
satellites are scheduled to launch in the next decade,
the applicability of the proposed scheme is getting
promising.
ACKNOWLEDGEMENT
This investigation was supported by Sinotech
Foundation. The authors are grateful for this support.
Thanks also go to Dr. C.-S. Kung, Mr. B.-R. Yang, and
Mr. C.-G. Shieh of Sinotech Engineers Consultants
Inc. for providing valuable tidal measurements and
detail explanations.
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Figure 9. The Comparison of Predicted
Shoreline(Dash Line) and
Real Shoreline (Solid Line)
23
Figure 10. Shoreline Changes of Wai-San-Ting
Predicted Shoreline(Dash Line) and
Real Shoreline (Solid Line)
REFERENCES
Carter, V., 1978," Coastal Wetlands: Role of Remote
Sensing ",Coastal Zone ‘78, pp.1261-1284.
Chen, L. C. and Lee, L. H. ,1992," Progressive
Generation of Control Frameworks for Image
Registration”, Photogrammetric Engineering and
Remote Sensing, Vol.58, No.9, pp.1321-1328.
Frihy, O. E. , Nasr, S. M. , El Hattab, M. M. & El Raey,
M.,1994 ,"Remote Sensing of Beach Erosion along
the Rosetta Promontory, Northwestern Nile Delta,
Egypt”, Int. Journal of Remote Sensing, Vol. 5,No. 8,
pp.1649-1660.
Hull, W., 1978,”The Significance of Tidal Datum to
Coastal Zone Management”, Coastal Zone ’78,
pp.965-971.
Lee, L. H. & Chen, L. C.,1990,” Surface Modeling and
Automated Terrain Feature Extraction”, Interhational
Archives of Photogrammetry and Remote Sensing,
Vol.28, No.4, pp.77-85.
Stokkom, H. T. C., Stokman, G. N. M. & Hovenier,
J.W.,1993, "Quantitative use of Passive Optical
Remote Sensing over Coastal and Inland Water
Bodies ”,Int. Journal of Remote Sensing, Vo.14, No.3,
pp.541-563.
Welch, R. , Remillard, M. & Alberts, J.,
1992, “Integration of GPS, Remote Sensing , and
GIS Techniques for Coastal Resource
Management” , Photogrammetric Engineering and
Remote Sensing , Vol.58, No. 11, pp.1571-1578.
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996
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