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

Kim, Hyung Rae; Choi, Sang Sam; Suh, Myoung‐Seok; Frese, Ralph R. B. von; Park, Kyung Jun; Yu, Haeun

doi:10.1007/s12303-019-0044-5

Cited by 3 publications

(8 citation statements)

References 38 publications

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Section: Methodsmentioning

confidence: 99%

“…R. von Frese et al, 2009 and East Asia , where the Moho estimates were well within 10% of those from large offset seismic studies. It also effectively served regional gravity-based crustal analyses of the Moon (Potts & von Frese, , 2003b) (Leftwich et al, 2005), Greenland (Braun et al, 2007), Ohio (J. W. Kim et al, 2000), and the Yellow/West Sea of China/Korea (H. R. Kim et al, 2020).…”

Section: Methodsmentioning

confidence: 99%

“…It also effectively served regional ZHANG ET AL. Figure Numbers as Applicable gravity-based crustal analyses of the Moon (Potts & von Frese, , 2003b) and its Mare Orientale Basin (R. R. von Frese, Tan, et al, 1997), Venus (Leftwich et al, 1999), Mars (Potts et al, 2004), Iceland and the North Atlantic Ocean (Leftwich et al, 2005), Greenland (Braun et al, 2007), Ohio (J. W. Kim et al, 2000), and the Yellow/West Sea of China/Korea (H. R. Kim et al, 2020).…”

Section: Methodsmentioning

confidence: 99%

“…The inferred radial (vertical) adjustments of the GU[sAMoho] help constrain modeling the mechanical properties and local stress fields of the Antarctic crust, assuming that it is evolving toward zero mean free‐air gravity anomaly and uniform thickness conditions (e.g., H. R. Kim et al., 2020; R. R. B. von Frese et al., 2008). However, this first‐order interpretation must be carefully considered because it is not a unique source of the TC[cFAGA], which also accommodate the effects of lithospheric flexure, mantle density variations related to the dynamic support of the topography, crustal mascons from meteorite impacts, and other isostatically uncompensated features of the lithosphere (e.g., Watts, 2001).…”

Section: Methodsmentioning

confidence: 99%

“…Further details on the methodology are available from its applications that, for example, provided crustal insights on the Antarctic (Jones et al., 2002; R. R. von Frese et al., 2009, 1999) and East Asia (Tan & von Frese, 1997), where the Moho estimates were well within 10% of those from large offset seismic studies. It also effectively served regional gravity‐based crustal analyses of the Moon (Potts & von Frese, 2003a, 2003b) and its Mare Orientale Basin (R. R. von Frese, Tan, et al., 1997), Venus (Leftwich et al., 1999), Mars (Potts et al., 2004), Iceland and the North Atlantic Ocean (Leftwich et al., 2005), Greenland (Braun et al., 2007), Ohio (J. W. Kim et al., 2000), and the Yellow/West Sea of China/Korea (H. R. Kim et al., 2020).…”

Section: Methodsmentioning

confidence: 99%

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Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

Zhang

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et al. 2020

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Gravity and magnetic anomalies of earthquake-prone areas in the southwestern Ulleung basin margin, East Sea (Sea of Japan)

Kim

Choi

et al. 2022

Sci Rep

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Submarine earthquakes have increased in the southwestern Ulleung Basin adjacent to the Korean Peninsula. This study analyzed the gravitational and magnetic properties of the three earthquake-prone areas (Hupo Bank and offshore regions near Pohang and Ulsan) in the basin. The basin was affected by tensile and compressive stresses during the formation of the East Sea. The southern Hupo Bank and the Pohang offshore exhibited high gravity anomalies and strong magnetic anomalies. Hupo Bank was separated from the peninsula and earthquakes in this region have been influenced by crustal fractures that facilitated igneous activities during the formation of the basin. Dense volcanic rocks and seaward dipping reflectors along the Pohang coast and continental slope suggest magmatic activities during the formation of the East Sea. Comparatively, the Ulsan offshore, with a thick sedimentary layer, exhibited a slightly higher gravity anomaly than the surrounding area, but no significant differences in the magnetic anomaly. Sequential tensile and compressive stresses related to the creation of the basin produced complex tectonic structures in this region. The magnetic tilt derivative results suggest that earthquakes were located near magnetic source boundaries. The results show that it is important to monitor earthquake-prone areas with gravity and magnetic anomalies.

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A Study of CHAMP Satellite Magnetic Anomalies in East Asia

Kim

2021

Econ. Environ. Geol.

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Satellite magnetic observations reflect the magnetic properties of deep crust about the depth of Curie isotherm that is a boundary where the magnetic nature of the rocks is disappeared, showing long wavelength anomalies that are not easily detected in near-surface data from airborne and shipborne surveys. For this reason, they are important not only in the analyses on such as plate reconstruction of tectonic boundaries and deep crustal structures, but in the studies of geothermal distribution in Antarctic and Greenland crust, related to global warming issue. It is a conventional method to compute the spherical harmonic coefficients from global coverage of satellite magnetic observations but it should be noted that inclusion of erroneous data from the equator and the poles where magnetic observations are highly disturbed might mislead the global model of the coefficients. Otherwise, the reduced anomaly model can be obtained with less corruption by choosing the area of interest with proper data processing to the area. In this study, I produced a satellite crustal magnetic anomaly map over East Asia (20° ~ 55°N, 108° ~ 150°E) centered on Korean Peninsula, from CHAMP satellite magnetic measurements about mean altitude of 280 km during the last year of the mission, and compared with the one from global crustal magnetic model (MF7). Also, a comparison was made with long wavelength anomalies from EMAG2 model compiled from all near-surface data over the globe.

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

Cited by 3 publications

References 38 publications

Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

Satellite Gravity Constraints on the Antarctic Moho and Its Potential Isostatic Adjustments

Gravity and magnetic anomalies of earthquake-prone areas in the southwestern Ulleung basin margin, East Sea (Sea of Japan)

A Study of CHAMP Satellite Magnetic Anomalies in East Asia

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