The gravity field and deep tectonics of the Ruykyu T-A-BA system

Yu Puzhi; Li Naisheng

doi:10.1007/BF02847835

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The gravity field and deep tectonics of the Ruykyu T-A-BA system

Updated：2023-05-16

- The gravity field and deep tectonics of the Ruykyu T-A-BA system
- Journal of Oceanology and Limnology Vol. 6, Issue 2, Pages: 157-170(1988)
- Affiliations：
  
  Institute of Oceanology
- Author bio：
- Funds：
- DOI：10.1007/BF02847835
  CLC：
- Published：1988
- Accepted：
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Puzhi, Y., Naisheng, L. The gravity field and deep tectonics of the Ruykyu T-A-BA system., Chin. J. Ocean. Limnol. 6, 157–170 (1988). https://doi.org/10.1007/BF02847835
DOI：

Puzhi, Y., Naisheng, L. The gravity field and deep tectonics of the Ruykyu T-A-BA system., Chin. J. Ocean. Limnol. 6, 157–170 (1988). https://doi.org/10.1007/BF02847835 DOI：

摘要

Abstract

This paper reports on our research on the gravity data around the Ryukyu T-A-BA system

and presents the results obtained and the calculation methods

such as

Moho calculation

spectrum analysis

smooth filtering

analytic extension

horizontal derivation

correlative analysis

etc. used in this study. In contrast to the information obtained from seismic profiles

the analyses show that oceanic and continental crusts demarcated by the Ryukyu T-A-BA system are very different in gravitational and tectonic characteristics. The structures in the T-A-BA region are very complicated and linearity of the gravity field and structure is very obvious. The Okinawa Trough with its two groups of fault structures in their respective NW and NNE strikes is an active neo-spreading back are basin whose development and evolution is greatly influenced by faulting.

关键词

Keywords

references

Li Naisheng, 1986. Calculating the crustal thickness in the sea area with the method of compressed-mass plane.Marine Sciences 10(2): 8–12, (in Chineses with English abstract)

Murauchi Sadanori, 1975. Crustal structure in the Philippine Sea.Marine Sciences 7(8): 33–38. (in Japanese with English abstract)

Segawa Jiro, 1976. Crustal mantle in the Philippine Sea and the surrounding island arcs.Marine Sciences 8 (3): 62–68. (in Japanese with English abstract)

Shen Jianping and Wang Heming. 1981. The compressed massplane method with pre-adjustment ofr inversion of gravity data in unequal station intervals.Journ of Shandong College of Oceanology 11(2): 90–100. (in Chinese with English abstract)

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