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Preliminary interpretation of magnetic anomalies over Japan and its surrounding area
Author(s) -
Yanagisawa Masahisa,
Kono Masaru,
Yukutake Takesi,
Fukushima Naoshi
Publication year - 1982
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl009i004p00322
Subject(s) - earth's magnetic field , magnetic anomaly , geology , anomaly (physics) , magnetization , geophysics , crust , heat flow , magnetic field , condensed matter physics , physics , meteorology , thermal , quantum mechanics
The anomalies of geomagnetic total force over Japan and its surrounding area (20°‐50°N and 120°‐160°E) were interpreted by a magnetization of the earth's surface layer in a direction parallel to the main magnetic field. A negative magnetization anomaly in the Japan Sea may be attributable to the thinness of the magnetized part of the crust in comparison with the Japan Island. This is in accordance with the underground high temperature gradient suggested from the observed high heat flow values in the Japan Sea area.