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| Yamazaki, Toshitsugu; Kanamatsu, Toshiya. |
| A paleomagnetic study was conducted on a sediment core KR0310-PC1 taken from the central North Pacific in order to obtain a relative paleointensity record in the Matuyama chron from this region. The core reached to about 1.6 Ma. The age control is based on the correlation of the S ratio (S-0.1T) variations with a global oxygen-isotope stack. Isothermal remanent magnetization (IRM) was used as the normalizer of the relative paleointensity estimation; anhysteretic remanent magnetization (ARM) was not adopted because ARM is sensitive to magnetostatic interaction among magnetic particles, which is evidenced in these sediments by an inverse correlation between the ratio of ARM to saturation IRM (SIRM) and SIRM without significant magnetic grain-size changes.... |
| Tipo: Text |
Palavras-chave: Paleomagnetism; Paleointensity; North Pacific; Orbital modulation; Normalizer; Magnetostatic interaction. |
| Ano: 2007 |
URL: https://archimer.ifremer.fr/doc/00235/34631/32963.pdf |
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| Goto, Shusaku; Yamano, Makoto; Morita, Sumito; Kanamatsu, Toshiya; Hachikubo, Akihiro; Kataoka, Satsuki; Tanahashi, Manabu; Matsumoto, Ryo. |
| Physical properties (bulk density and porosity) and thermal properties (thermal conductivity, heat capacity, specific heat, and thermal diffusivity) of sediment are crucial parameters for basin modeling. We measured these physical and thermal properties for mud-dominant sediment recovered from the Joetsu Basin, in the eastern margin of the Japan Sea. To determine thermal conductivity, heat capacity, and thermal diffusivity, the dual-needle probe method was applied. Grain density and grain thermal properties for the mud-dominant sediment were estimated from the measured physical and thermal properties by applying existing models of physical and thermal properties of sediment. We suggest that the grain density, grain thermal conductivity, and grain thermal... |
| Tipo: Text |
Palavras-chave: Thermal conductivity; Thermal diffusivity; Heat capacity; Specific heat; Dual-needle probe method; Mineral composition. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00387/49789/50343.pdf |
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