Further application of the deconvolution method of post-depositional DRM to the precise record of the Matuyama-Brunhes reversal in the sediments from the Boso Peninsula, Japan

Tsunakawa Hideo, Okada Makoto, Niitsuma Nobuaki

doi:10.1186/bf03352221

Further application of the deconvolution method of post-depositional DRM to the precise record of the Matuyama-Brunhes reversal in the sediments from the Boso Peninsula, Japan

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Tsunakawa Hideo

Department of Earth and Planetary Sciences, Tokyo Institute of Technology
Okada Makoto

Department of Earth Sciences, Ibaraki University
Niitsuma Nobuaki

Department of Geosciences, Shizuoka University

書誌事項

公開日: 1999

DOI

10.1186/bf03352221

公開者: 地球電磁気・地球惑星圏学会、公益社団法人日本地震学会、特定非営利活動法人日本火山学会、日本測地学会、日本惑星科学会

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説明

The Matuyama-Brunhes geomagnetic reversal was continuously recorded in the massive siltstones of the Boso marine sediments in Japan with the time resolution better than 9 years. However the Boso sediments probably have the post-depositional detrital remanent magnetization (pDRM) depressing short-period variations due to the convolution of the geomagnetic field. The previous application of the deconvolution method of pDRM to the 900 year records gave the half fixing depth of 21 cm. Further application of this fixing depth to the 4100 year record clearly shows nearly 100 year variations in both of the inclination and declination.