Moho modeling of the Yellow Sea (West Sea) from spectrally correlated free-air and terrain gravity data SCIE SCOPUS KCI

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Moho modeling of the Yellow Sea (West Sea) from spectrally correlated free-air and terrain gravity data
Alternative Title
Moho modeling of the Yellow Sea (West Sea) from spectrally correlated free-air and terrain gravity data
Author(s)
Kim, Hyung Rae; Choi, Soon-Young; Suh, Mancheol; von Frese, Ralph R. B.; Park, Kyung Jun; Yu, Haeun
Publication Year
2020-03
Abstract
Moho estimates for the Yellow Sea and Bohai Basin were developed from the EGM2008 gravity, ETOPO1 topography/bathymetry, and NOAA's sedimentary thickness databases. Spectral correlation analysis between the free-air gravity anomalies (FAGA) and the terrain's gravity effects (TGE) at 20 km altitude was made to estimate the terrain-correlated FAGA, which can provide information on the isostatic status of the study area. This study included the additional terrain gravity effects due to density contrasts from sedimentary rock thickness variations over the Yellow Sea. Spectral correlation filtering of the FAGA with the TGE estimated the terrain correlated FAGA, which were subtracted from the TGE to infer isostatically compensated gravity effects for inversion constraints on the Moho modeling. The derived Moho estimates show considerable sensitivity to the sedimentary thickness variations and tectonic features of the Yellow Sea region. In addition, the gradients in the dynamic crustal topography inferred from the terrain-correlated FAGA show apparent associations with the distribution of the Yellow Sea's earthquakes with predominantly strike-slip focal mechanisms.
ISSN
1226-4806
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/38718
DOI
10.1007/s12303-019-0044-5
Bibliographic Citation
GEOSCIENCES JOURNAL, v.24, no.5, pp.531 - 540, 2020
Publisher
GEOLOGICAL SOCIETY KOREA
Keywords
Yellow Sea; Moho; EGM2008; ETOPO1; sedimentary rock thickness; sedimentary basins; gravity
Type
Article
Language
English
Document Type
Article
Publisher
GEOLOGICAL SOCIETY KOREA
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