Introductory notes on shock remanent magnetization and shock demagnetization of igneous rocks

作者: Takesi Nagata

DOI: 10.1007/BF00875213

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摘要: Effects of mechanical shocks about 0.5 msec in duration on the remanent magnetization igneous rocks are experimentally studied. The acquired by applying a shock (S) presence magnetic field (H), which is symbolically expressed asJ R (H+S Ho), very large compared with ordinary isothermal (IRM) same field.J Ho) proportional to piezo-remanent magnetization,J (H+P+Po Ho). effect applyingS advance an acquisition IRM represented byJ (S H+ Ho).J can become much larger than IRM, and pressure IRM,J R(P+ P0 H0). shockS applied non-magnetic space shock-demagnetization effect,J R(H+ H0 S), also toJ R(H+ P+ P0). Because, short, single cannot achieve final steady state. ofn-time repeated shocks, byJ 0+ΔJ *(n), whereJ 0 means immediate ΔJ *(n) represent resultant repeating, mathematical expression [1−exp {−α(n−1)}].

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