Priori knowledge based a bathymetry assessment method using the sun glitter imagery: a case study of sand waves on the Taiwan Banks

Shao, Hao; Li, Yan; Li, Li

doi:10.1007/s13131-014-0375-z

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…Compared with results from He, 20 our approach achieves a similar accuracy, but requires fewer true depths. Although Shao et al 21 presented an approach for mapping submarine sand waves that required only a few true depths, their technique is based on prior knowledge of sand wave morphology. In contrast, our approach requires no knowledge of the morphology, and the operation is simpler and does not involve an iterative process.…”

Section: Resultsmentioning

confidence: 99%

“…7,18 Hennings et al 19 developed a key theory of the sun glitter imaging mechanisms for underwater bottom topography based on the Cox-Munk model and SAR imaging mechanisms. He et al, 20 Shao et al, 21 and Zhang et al 22 used sun glitter imagery to observe sand waves in the Taiwan Banks, and statistically analyzed their distributions and characteristics. According to the sun glitter geometry model, it has been found that the signature of sun glitter images depends strongly on the viewing angle.…”

Section: Introductionmentioning

confidence: 99%

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Bathymetric mapping of submarine sand waves using multiangle sun glitter imagery: a case of the Taiwan Banks with ASTER stereo imagery

Zhang

Yang

Lou

et al. 2015

J. Appl. Remote Sens

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Abstract. Submarine sand waves are visible in optical sun glitter remote sensing images and multiangle observations can provide valuable information. We present a method for bathymetric mapping of submarine sand waves using multiangle sun glitter information from Advanced Spaceborne Thermal Emission and Reflection Radiometer stereo imagery. Based on a multiangle image geometry model and a sun glitter radiance transfer model, sea surface roughness is derived using multiangle sun glitter images. These results are then used for water depth inversions based on the Alpers-Hennings model, supported by a few true depth data points (sounding data). Case study results show that the inversion and true depths match well, with high-correlation coefficients and root-mean-square errors from 1.45 to 2.46 m, and relative errors from 5.48% to 8.12%. The proposed method has some advantages over previous methods in that it requires fewer true depth data points, it does not require environmental parameters or knowledge of sand-wave morphology, and it is relatively simple to operate. On this basis, we conclude that this method is effective in mapping submarine sand waves and we anticipate that it will also be applicable to other similar topography types. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 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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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bathymetric mapping of submarine sand waves using multiangle sun glitter imagery: a case of the Taiwan Banks with ASTER stereo imagery

Zhang

Yang

Lou

et al. 2015

J. Appl. Remote Sens

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“…However, the submarine sand waves are always visible using sun glitter images [Shao et al, 2011]. In the last few decades, numerous studies have surveyed sand wave characteristics in the Taiwan Banks [e.g., Boggs, 1974;Liu, 1996;Du et al, 2008;Shao et al, 2014;Zhang et al, 2014;Bao et al, 2014].…”

Section: Study Areamentioning

confidence: 99%

“…Hennings et al [1988] used observations of underwater topography in optical sun glitter images to develop a sun glitter model of underwater topography that is based on the CM [Cox and Munk, 1954] and AH [Alpers and Hennings, 1984] models. Shao et al [2014] and He et al [2014] used the sun glitter images to detect the topography of sand waves in the Taiwan Banks.…”

Section: Introductionmentioning

confidence: 99%

Whitecap features induced by submarine sand waves in stereo optical imagery

Zhang

Lou

et al. 2015

JGR Oceans

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Under high wind speed conditions, waves break on the sea surface producing whitecaps, which can be recorded in optical satellite images. However, the breaking of waves is also influenced by submarine topography. In this study, we investigate the whitecap features induced by submarine sand waves using optical stereo images. We determine the whitecap coverage in images, and estimate the probabilities of wave breaking. The observed and estimated results are in agreement with some previous investigation results. A physical model is used to discuss the mechanisms of wave breaking along sand wave crests. The physical model is able to qualitatively explain the differences between the observed whitecap coverage and the estimated probability of wave breaking between the sand wave area (SWA) and the background area (BGA). Further analysis shows that the periodic sand wave system may play the role of a frequency‐control device, and may result in more broken waves in the SWA than in the BGA. This study demonstrates that it is possible to observe submarine topography under high‐wind conditions by using whitecap features.

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“…Sediment grain size composition and parameters can describe characteristics of the sedimentary environment and sediment transport processes 15 – 20 . Marine sedimentary clay minerals track changes in ocean currents, and their vertical distribution is interpreted broadly as reflecting terrestrial climate change in the provenance area 21 , 22 .…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial characteristics of sediment sources on the southern Yangtze Shoal over the Holocene

Cao

Cai

Zheng

et al. 2018

Sci Rep

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The sediment sources of the Yangtze Shoal were traced by analysing surface and core sediment particle size, detrital and clay minerals, carbon and nitrogen isotopes, and radioisotope dating. In the estuary, the sediments are dominated by silty clay, high stable mineral, and extremely high illite/chlorite. Stable organic carbon isotopes (δ13C-TOC) indicated a marine-dominated mixture. On the shoal, the sediments are mainly composed of fine sand, high unstable mineral. The δ13C-TOC indicated predominantly marine sedimentation. The average TOC of core sediments was ~0.26%, and the average TN was ~0.05%. The TOC/TN was 5.4–7.8, the δ13C-TOC was −19.8 to −22.1‰, and the age of the sediments spanned the last ~10.8 ka (Holocene). The sediments and provenance of the Yangtze Shoal have been controlled by the East Asian monsoon, sea level change, riverine sediment flux and ocean circulation. The intervals 8.3–6.3 ka and 3.8–1.5 ka, are characterized by Yangtze River sources, whereas 6.3–3.8 ka and 1.5–0.8 ka, are characterized by a source mixture with Yellow River input. Tracing the multiple sources effectively confirms the hypothesis that the southern Yangtze Shoal was a delta formed by combined sedimentation from the Yangtze River and Yellow River during times of low sea level.

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Priori knowledge based a bathymetry assessment method using the sun glitter imagery: a case study of sand waves on the Taiwan Banks

Cited by 8 publications

References 17 publications

Bathymetric mapping of submarine sand waves using multiangle sun glitter imagery: a case of the Taiwan Banks with ASTER stereo imagery

Bathymetric mapping of submarine sand waves using multiangle sun glitter imagery: a case of the Taiwan Banks with ASTER stereo imagery

Whitecap features induced by submarine sand waves in stereo optical imagery

Temporal and spatial characteristics of sediment sources on the southern Yangtze Shoal over the Holocene

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