Self-affinities of landforms and folds in the Northeast Honshu Arc, Japan

• Autorzy: Kikuchi K. , Abiko K. , Nagahama H. , Kitazato H. , Muto J.

Identyfikatory

DOI

10.2478/s11600-013-0151-z

• Języki publikacji: EN

Abstrakty

EN

A method to analyze self-affinities is introduced and applied to the large scale fold geometries of Quaternary and Tertiary sediments or geographical topographies in the inner belt of the Northeast Honshu Arc, Japan. Based on this analysis, their geometries are self-affine and can be differently scaled in different directions. We recognize a crossover from local to global altitude (vertical) variation of the geometries of folds and topographies. The characteristic length for the crossover of topographies (landforms) is about 25 km and is related to the half wavelength of the crustal buckling folds or possible maximum magnitude of inland earthquakes in the Northeast Honshu Arc. Moreover, self-affinity of the folds and topographies can be connected with the b-value in Gutenberg-Richter℉s law. We obtain two average Hurst exponents obtained from the self-affinities of folds in the Northeast Honshu Arc. This indicates that there are two possible seismic modes for the smaller and larger ranges in the focal regions in the Northeast Honshu Arc.

Słowa kluczowe

EN

andform; fold; Northeast Honshu Arc; self-affinities; Gutenberg–Richter’s law

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2013
• Tom: Vol. 61, no. 6
• Strony: 1642--1658
• Opis fizyczny: Bibliogr. 43 poz.

Twórcy

autor

Kikuchi K.

• Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japan

autor

Abiko K.

• Forestry and Fisheries Department, Yamagata Prefectural Government, Yamagata, Japan

autor

Nagahama H.

• Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japan

autor

Kitazato H.

• Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan

autor

Muto J.

• Department of Earth Science, Graduate School of Science, Tohoku University, Sendai, Japan

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