Bathymetry enhancement by altimetry-derived gravity anomalies in the East Sea (Sea of Japan) SCIE SCOPUS

Cited 12 time in WEB OF SCIENCE Cited 17 time in Scopus
Title
Bathymetry enhancement by altimetry-derived gravity anomalies in the East Sea (Sea of Japan)
Author(s)
Kim, Kwang Bae; Hsiao, Yu-Shen; Kim, Jeong Woo; Lee, Bang Yong; Kwon, Yi Kyun; Kim, Chang Hwan
Publication Year
2010-12
Abstract
The gravity-geologic method (GGM) was used to enhance the bathymetry of the East Sea (Sea of Japan) with satellite altimetry-derived free-air gravity anomalies and shipborne depth measurements. By comparison with the bathymetry model of Smith and Sandwell's (SAS) approach (1994), GGM was found to have an advantage with short wavelength (<= 12 km) components, while SAS better predicts longer wavelength (>= 25 km) components, despite its dependency on density contrast. To mitigate this limitation, a tuning density contrast of 10.25 g/cm(3) between seawater and the seafloor was primarily estimated by the downward continuation method and then validated by the check points method with GGM. Similarly, SAS is limited by the "A" value in low-pass part of the Wiener filter, which defines the effective range of the wavelength components on bathymetry. As a final result, we present an enhanced GGM bathymetry model by integrating all available data.
ISSN
0025-3235
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3998
DOI
10.1007/s11001-010-9110-0
Bibliographic Citation
MARINE GEOPHYSICAL RESEARCH, v.31, no.4, pp.285 - 298, 2010
Publisher
SPRINGER
Keywords
Bathymetry enhancement; Altimetry-derived free-air gravity anomalies; East Sea (Sea of Japan); Gravity-geologic method (GGM); Density contrast
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER
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