Three-dimensional flexure modeling by seamont loading in the western Pacific: Infinite plate model SCOPUS KCI

Title
Three-dimensional flexure modeling by seamont loading in the western Pacific: Infinite plate model
Author(s)
Lee, T.-G.; Moon, J.-W.; Chi, S.-B.; Park, C.-K.; Lee, K.
KIOST Author(s)
Moon, Jai Woon(문재운)Chi, Sang Bum(지상범)
Publication Year
2005
Abstract
The bathymetric and gravity data were obtained in 2001 and 2003 during a survey of seamounts in the northwest of the Marshall Islands, western Pacific. The study areas are located in the Pigafetta Basin which is the oldest part of the Pacific plate and in the Ogasawara Fracture Zone which formed from the spreading ridge between the Izanagi and Pacific plates in the Jurassic. The densities of seamounts and the elastic thickness values of the lithosphere are calculated by using three-dimensional flexure modeling considering the constant sediment layer in the infinite plate model. Very low elastic thickness values (5 km), relatively young seamounts, and old lithosphere in the east study area suggest the possibility of the rejuvenation of lithosphere by widespread volcanisms, whereas the elastic thickness values (15 km), relatively old seamounts, and young lithosphere of the west study area are suitable for a simple cooling plate model of 300-600°C isotherm. The gravity residuals of OSM6-1 and OSM6-2 suggest the possibility of different load density or elastic thickness. Relatively older OSM6-2 formed on the younger lithosphere with relatively thin elastic thickness, while younger OSM6-1 on the older lithosphere with relatively thick elastic thickness.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5121
DOI
10.4217/OPR.2005.27.1.035
Bibliographic Citation
Ocean and Polar Research, v.27, no.1, pp.35 - 44, 2005
Publisher
Korea Ocean Research and Development Institute
Subject
elastic property; lithosphere; seamount; Asia; Bonin Islands; Eastern Hemisphere; Eurasia; Far East; Honshu; Japan; Kanto; oceanic regions; Pacific Ocean; Pacific Ocean (West); Tokyo [Kanto]; World; Pigafetta
Keywords
Elastic thickness; Infinite plate model; Ogasawara Fracture Zone; Rejuvenation of lithosphere; Three-dimensional flexure modeling
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

deep sea mineral resources,deep sea sediments,심해저 광물자원,심해저 퇴적물,심해 환경

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