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12 August 2014 Observation of sand waves in the Taiwan Banks using HJ-1A/1B sun glitter imagery
Hua-guo Zhang, Xiu-lin Lou, Ai-qin Shi, Xie-kai He, Wei-bing Guan, Dong-ling Li
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Journal of Applied Remote Sensing, Vol. 8, Issue 1, 083570 (August 2014). https://doi.org/10.1117/1.JRS.8.083570
Abstract
This study focuses on the large sand waves in the Taiwan Banks. Our goals are to observe the sand waves as completely as possible, to obtain their direction, wavelength, density, and ridge length, to analyze their spatial distributions, and to understand the effects of the current field and water depth on the sand waves. This study demonstrates the possibility of using HJ-1A/1B sun glitter imagery with a large swath width and rapid coverage in studying sand waves. Six cloud-free HJ-1A/1B optical images with sun glitter signals received during 2009 to 2011 were processed. The sand waves were mapped based on their features in the images; their direction, wavelength, density, and ridge length were measured and analyzed. We identified 4604 sand waves distributed in an area of 16,400  km2. The distributions of sand waves and their characteristics were analyzed, and the differences of sand waves between the northwestern subregion and the southeastern subregion are reported. Further analysis and discussion of the relationships between spatial distribution of the sand waves and both the tidal current field from a numerical simulation and water depth led to some interesting conclusions. The current field determines the orientation of the sand wave, while the hydrodynamic conditions and water depth influence the shape, size, and density of sand waves to a certain degree.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Hua-guo Zhang, Xiu-lin Lou, Ai-qin Shi, Xie-kai He, Wei-bing Guan, and Dong-ling Li "Observation of sand waves in the Taiwan Banks using HJ-1A/1B sun glitter imagery," Journal of Applied Remote Sensing 8(1), 083570 (12 August 2014). https://doi.org/10.1117/1.JRS.8.083570
Published: 12 August 2014
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Cited by 11 scholarly publications.
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KEYWORDS
Sun
Charge-coupled devices
Ocean optics
Statistical analysis
Satellites
Picture Archiving and Communication System
Remote sensing
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