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1.
Jeff Kanipe 《Astrophysics and Space Science》1995,227(1-2):109-118
Is the big bang model of the universe ascendant and unshakable, or declining and outdated? This paper cursorily explores the state of cosmology today. 相似文献
2.
Huang Qinghua Ikeya Motoji and Huang PeihuaDepartment of Earth Space Sciences Graduate School of Science Osaka University Osaka Japan Department of Earth Space Sciences University of Science Technology of China Hefei China 《中国地震研究》1997,(1)
Electric field effect on animals has been studied to investigate its relation with seismic anomalous animal behaviors(SAABs)in China.Freshwater eel,crucian carp,catfish,and soft-shelled turtle responded to the threshold electric field of 1-10 V/m,while duck,goose,cat,sheep,pig,dog,and chicken all responded to the ground electric field of about tens of V/m,depending on the species as well as on individuals.Most of the behaviors caused by electric field were similar to those reported as SAABs such as alignment,sudden movement,panic,and convulsion.The intensity of electric field due to a major earthquake would have been over these threshold values.Numerical estimation based on an electromagnetic model of a fault has been made to induce SAABs as electric shocks to pulsed electric fields in electro-physiology.The seismic electric signals(SES)intensity might be estimated from the observation of SAABs. 相似文献
3.
MT法中利用阻抗相位资料对畸变视电阻率曲线的校正 总被引：11，自引：3，他引：11
从理论上论证了在一定条件下大地电磁响应中的相位资料将不受随机电磁噪声的影响，介绍了由相位资料递推计算视电阻率的方法，通过与远参考资料的比较，证明利用阻抗相位资料可分段恢复校正畸变的实测视电阻率数据。 相似文献
4.
Arbab I. Arbab 《Astrophysics and Space Science》2009,323(2):181-184
In the framework of unifying gravity and electromagnetism, we have shown that accelerating objects emit gravitational wave
as those determined by Larmor formula for the accelerating charged particle. We have found new formulae for the power of Gravitational
waves radiated by spinning and orbiting objects. The minimum wavelength of the gravitational wave emitted by an object of
mass m and radius R is
. 相似文献
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6.
Abstract We study the bifurcation to steady two-dimensional convection with the heat flux prescribed on the fluid boundaries. The fluid is weakly non-Boussinesq on account of a slight temperature dependence of its material properties. Using expansions in the spirit of shallow water theory based on the preference for large horizontal scales in fixed flux convection, we derive an evolution equation for the horizontal structure of convective cells. In the steady state, this reduces to a simple nonlinear ordinary differential equation. When the horizontal scales of the cells exceed a certain critical size, the bifurcation to steady convection is subcritical and the degree of subcriticality increases with increasing cell size. 相似文献
7.
总结了兴海6．6级地震前青海东部电磁学科所反映的异常特征，并对兴海地震的孕震过程予以初步的分析。 相似文献
8.
地磁Z分量日变"低点位移"异常成因分析 总被引：2，自引：0，他引：2
本文基于对地磁Z分量日变"低点位移"异常和太阳静日变化内外源场等效涡旋电流体系时空演化特征的分析,提出了"电磁炉效应"假说,以解释地磁Z分量日变"低点位移"异常的成因.本文认为,起源于地球内部和外部涡旋电流体系所产生的太阳静日变化Sq,作为一个持续的交变磁场,切割地壳深部的高导低速层,形成涡旋电流并产生热能,致使高导低... 相似文献
9.
Anton Ziolkowski Ronnie Parr David Wright Victoria Nockles Christopher Limond Ed Morris Jonathan Linfoot 《Geophysical Prospecting》2010,58(6):1159-1176
We present results of synthetic time‐lapse and real repeatability multi‐transient electromagnetic surveys over the North Sea Harding field. Using Archie's law to convert porosity and fluid saturation to resistivity we created 3D isotropic models of the reservoir resistivity at different stages of production from the initial state in 1996 through to complete hydrocarbon production by 2016 and, for each stage, we simulated an east‐west transient electromagnetic survey line across Harding. Unconstrained 1D full‐waveform Occam inversions of these synthetic data show that Harding should be detectable and its lateral extent reasonably well‐defined. Resistivity changes caused by hydrocarbon production from initial pre‐production state to production of the oil rim in 2011 are discernible as are significant changes from 2011–2016 during the modelled gas blowdown phase. The 2D repeatability surveys of 2007 and 2008 tied two wells: one on and the other off the structure. Between the two surveys the segment of the field under investigation produced 3.9 million barrels of oil – not enough to generate an observable time‐lapse electromagnetic anomaly with a signal‐to‐noise ratio of 40 dB. Processing of the 2007 and 2008 data included deconvolution for the measured source current and removal of spatially‐correlated noise, which increased the signal‐to‐noise ratio of the recovered impulse responses by about 20 dB and resulted in a normalized root‐mean‐square difference of 3.9% between the data sets. 1D full‐waveform Occam inversions of the real data showed that Harding was detectable and its lateral extent was also reasonably well‐defined. The results indicate that the multi‐transient electromagnetic method is suitable for exploration, appraisal and monitoring hydrocarbon production. 相似文献
10.
地震电磁成因假说 总被引：2，自引：1，他引：1
为了找到符合或接近自然真实的地震成因,结合地震学、电磁学、等离子体物理、空间物理等学科的一些研究成果,提出一个新的地震成因机制,对各种地震现象做出了合理解释。有证据表明,地震可能是一种电磁和化学效应。它可能是由于受太阳活动调制的电离层、磁层等离子体电场与地表之间的电磁感应以及地壳内部的电过程,导致大量荷电粒子（等离子体）因趋肤效应在地壳表层的某些区域积聚,积聚在数万至数百万平方千米地表中的巨量等离子体在诸如太阳活动的影响下达到了等离子体复合的条件时,就会发生猛烈的集体复合。由于等离子体复合是一种放能过程,因而会释放出巨大能量。同时由于存在辐射复合过程而产生地光,等离子体复合的爆炸效应导致类似打雷、放炮的地声,并释放出沿球面均匀地向四周传播的地震波,由此形成的强磁场中的洛伦兹力使地面产生强烈旋扭而使地面出现左旋或右旋的地裂缝。与地震密切相关的一些自然现象如干旱、台风、暴雨、热异常以及地震中的喷水冒沙、地震云等现象,都可以由此得到统一的解释。 相似文献