Japan Geoscience Union Meeting 2014

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Poster

Symbol S (Solid Earth Sciences) » S-EM Earth's Electromagnetism

[S-EM37_30PO1] Geomagnetism, paleomagnetism and rock magnetism

Wed. Apr 30, 2014 6:15 PM - 7:30 PM Poster (3F)

Convener:*Sakuraba Ataru(Department of Earth and Planetary Science, University of Tokyo), Nobutatsu Mochizuki(Priority Organization for Innovation and Excellence, Kumamoto University)

6:15 PM - 7:30 PM

[SEM37-P11] Medium soscale crustal structure based on magnetic and gravity anomalies in the eastern part of Hokkaido, Japan. -part 2

*Rie MORIJIRI1, Mitsuru NAKAGAWA1 (1.Geological Survey of Japan, AIST)

Keywords:magnetic property, magnetic anomaly, gravity anomaly, Nemuro, Hokkaido

The Pacific coast of the eastern Hokkaido (from Kushiro to Nemuro Peninsula) is characterized by high gravity and high magnetic anomalies. However, it was difficult to get a suitable model due to gravity anomalies on land and aeromagnetic anomalies. We sampled basalts in this area and measured densities, natural remanent magnetization, susceptibilities and other magnetic properties. These results were presented in Japan Geoscience Union Meeting 2007. Moreover, new gravity and magnetic anomaly maps of offshore of cape Ochiishi were published by GSJ, AIST (2012). We picked up profiles and modified previous models. Data including new profiles suggested similar models to previous studies.