Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Topographic Analysis of Bathymetry Data Acquired from the KR1 Area of Northeastern Pacific : Application of Wavelet-based Filter

북동태평양 KR1 광구 수심자료의 지형분석 : 웨이브렛 필터의 적용

  • 정미숙 (한국해양연구원 해양자원연구본부) ;
  • 김현섭 (한국해양연구원 해양자원연구본부) ;
  • 박정기 (한국해양연구원 해양자원연구본부)
  • Published : 2007.12.30
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Abstract

2-D wavelet analysis is applied to bathymetric data from the KR1 area of Korea Deepsea Mining Area. The wavelet analysis is one of the quantitative methods to analyze the topography. The wavelet allows us to create filters to select for topography in a continuous variety of shapes, sizes, and orientation. The 2-D Linear B-spline filter, 100 BS and 100 NF, is convolved with bathymetric data to identify the location of abyssal hills and abyssal troughs in bathymetry. In addition, the 2-D derivative of Cubic B-spline filter, 60 BS and 60 NF, is applied to bathymetric data to find the slope of abyssal hill in bathymetry. These filters were rotated $5^{\circ}$ counterclockwise from NS to match the dominant orientation of seafloor lineament. Both filters result in good match with abyssal hills, troughs, and slopes. This method can apply to fault, fold, and other lineament structures description with variable size. The result of application shows that wavelet analysis of bathymetric data could be used with fundamental data of geophysical analysis.

Keywords

References

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  2. Control of Manganese Nodule Characteristics by Volcanic Activity in the NE Equatorial Pacific vol.36, pp.4, 2014, https://doi.org/10.4217/OPR.2014.36.4.373