The Development of Topographic Feature Extraction Method by use of the Seafloor Curvature Measurement

곡률 계산에 의한 해저면 지형요소 추출 기법 개발

  • Kim, Hyun-Sub (Deep-sea Resources Research Division, Korea Ocean Research and Development Institute) ;
  • Jung, Mee-Sook (Deep-sea Resources Research Division, Korea Ocean Research and Development Institute) ;
  • Park, Cheong-Kee (Deep-sea Resources Research Division, Korea Ocean Research and Development Institute)
  • 김현섭 (한국해양연구원 심해연구사업단) ;
  • 정미숙 (한국해양연구원 심해연구사업단) ;
  • 박정기 (한국해양연구원 심해연구사업단)
  • Published : 2007.08.31


A seafloor curvature measurement method was developed to extract redundant topographic features from the multi-beam bathymetry data, and then applied to the data of abyssal plain area in the Pacific. Any seafloor might be modeled to a quadratic surface determined in a linear least squares sense, and its curvature could be derived from the eigen values related with quadratic model parameters. The curvature's magnitude as well as polarity showed distinct relationship with geometric characteristics of the seafloor like as ridge and valley. From the investigation of curvature's variation with the number of data in the quadratic surface, the optimal size of data aperture could be applied to real bathymetry data. The application to real data also required the determination of the accompanying threshold values to cope with corresponding topographic features. The calculation method of previous studies were reported to be sensitive to the background noise. The improved curvature measurement method, incorporating the sum of eigen values has reduced unwanted artifacts and enhanced ability to extract lineament features along strike direction. The result of application shows that the curvature measurement method is effective tool for the estimation of a possible mining area in the seamount free abyssal hill area.


  1. 김현섭, 2007, 북동 태평양 클라리온-클리퍼톤 지역 망간단괴 부 존량과 지형변화의 상관관계 정량적 분석 및 채광가능지역 추 출을 위한 분석 도구 개발, 공학박사 학위논문, 서울대학교
  2. 정미숙, 이태국, 김현섭, 고영탁, 박정기, 김기현, 2006, 웨이브렛 디지털 필터를 이용한 북동태평양 KR5 지역의 지형 분석방법, 지구물리, 9, 311-320
  3. 해양수산부, 2007, 2006 심해저 광물자원탐사 보고서, 1권, 한국 해양연구원
  4. Canny, J., 1986, A computational approach to edge detection, Trans. on Pattern Anal. and Machine Intelligence, PAMI-8, 6, 679-698
  5. Davis, J. C., 1986, Statistics and data analysis in geology, 2nd Ed., John Willey and Sons
  6. Edwards, M. H., Fornari, D. J., Malinverno, A., and Ryan, W. B. F., 1991, The regional tectonic fabric of the East Pacific Rise from $12^{\circ}$50'N to $15^{\circ}$ 10'N, Journal of Geophysical Research, 96(B5), 7995-8017
  7. Evans, I. S., 1980, An integrated system of terrain analysis and slope mapping, Zeitschrift fur Geomorphologie, N.F., Supplementband, 36, 274-295
  8. Fox, C. G., and Hayes, D. E., 1985, Quantitative methods for analyzing roughness of the seafloor, Reviews of Geophysics, 23, 1-48
  9. Goff, J. A., and Jordan, T. H., 1988, Stochastic modeling of seafloor morphology: Inversion of Sea Beam data for secondorder statistics, Journal of Geophysical Research, 93(B13), 13589-13608
  10. Goff, J. A., 1993, Abyssal hill segmentation: Quantitative analysis of the East Pacific Rise flanks $7^{\circ}$ S - $9^{\circ}$S, Journal of Geophysical Research, 98, 13581-13862
  11. Kennett, J., 1982, Marine Geology, Englewood Cliffs, NJ, Prentice-Hall
  12. Little, S. A., and Smith, D. K., 1996, Fault scarp identification in side-scan sonar and bathymetry images from the Mid- Atlantic Ridge using wavelet-based filters, Marine Geophysical Researches, 18, 741-755
  13. Little, S. A., 1994, Wavelet analysis of seafloor bathymetry: an example, in Foufoula-Georgiou, E., and Kumar, P. Ed., Wavelets in Geophysics, Academic Press, 167-182
  14. Macdonald, K. C., Fox, P. J., Alexander, R. T., Pockalny, R. and Gente, P., 1996, Volcanic growth faults and the origin of Pacific abyssal hills, Nature, 380, 125-129
  15. McCoy, J., and Johnston, K., 2001, Using ArcGIS Spatial Analyst, ESRI, New York
  16. Menke, W., 1989, Geophysical data analysis: Discrete inverse theory, Academic, San Diego, California
  17. Shaw, P. R., and Lin J., 1993, Cause and consequences of variations in faulting style at the mid-Atlantic ridge, Journal of Geophysical Research, 98(B12), 21839-21851
  18. Shaw, P. R., 1992, Ridge segmentation, faulting, and crustal thickness in the Atlantic, Nature, 358, 490-493
  19. Shaw, P. R., and Smith, D. K., 1990, Robust description of statistically heterogeneous seafloor topography through its slope distribution, Journal of Geophysical Research, 95, 8705-8722
  20. Zevenbergen, L. W., and Thorne, C. R., 1987, Quantitative analysis of land surface topography, Earth Surface Process and Landforms, 12, 47-56