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Articles

by MOHAMMAD SHAHI FERDOWS
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Enhancement of anomaly plays such a critical role in mineral exploration that this work has been carried out by removed noise in geophysical data. Power spectrum area (S-A) and multifractal singular value decomposition (MSVD) methods are application methods in enhancement of anomaly that are usually used in the geochemical exploration process. However, these methods have not been widely used in the geoelectrical data so far. Hamyj deposit is located about 80 kilometers west of Birjand city, South Khorasan province, Iran. In this area, resistivity and induced polarization data have been surveyed by dipole- dipole array. In this paper, IP data has been inversed by the linear method. Then, enhancement of anomaly IP data has been carried out by S-A and MSVD methods. Results of S-A and MSVD methods were compared with each other. Results indicate that the S-A method has determined the location of anomaly IP data better than the MSVD method.
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Articles

by Yinghong Qin, Jia Liang, Kanghao Tan, Fanghua Li
311 Views, 0 PDF Downloads
Urban structures consist of buildings, roofs, walls and streets. Buildings at both sides of the street create a canyon-like environment that is called urban canyon (UC). In a UC, conventional impervious pavements absorb and store solar radiation but negate the evaporative cooling, contributing to the development of urban heat island (UHI). One popular option to mitigate UHI is to make the pavements more reflective than conventional pavements and to absorb less solar radiation in the urban area. However, it remains unknown if a reflective pavement in an urban canyon can effectively reduce the solar absorption of the urban surfaces. This study prepares ten UC prototypes with differential pavement reflectivity and with south-north orientation, west-east orientation, and cross-street orientation, respectively. The albedo of these UC prototypes is measured by a new method that is proposed to estimate the reflectivity of urban canyon prototypes. It is found that raising the albedo of the pavement is inefficient to increase the albedo of the UC, especially for UC with great aspect ratio. In low aspect-ratio UC or parking lot, reflective pavements reflect a sizable additional diffuse radiation to pedestrians. Therefore, it should be caution to develop reflective pavements as urban cooling strategy.
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Articles

by Zhao Wang
122 Views, 0 PDF Downloads

The sand bodies of the underwater divergent channels in the delta subfacies in the delta are distributed in narrow strips, and the thin inter-layer characteristics are significant. This type of sand body has low control degree, and the prediction between wells mainly relies on seismic methods. It is affected by the quality of seismic data. The prediction accuracy is low. In this paper, taking the No.1 reservoir of Gaotaizi Oilfield Research Area as the research object, the forward model is used to describe the relationship between seismic attributes and channel sand body thickness.

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Articles

by Jian'an Wang
28 Views, 0 PDF Downloads

Based on the new "etheric" concept that "every planet, object or particle carries an etheric layer that moves with itself, and this etheric layer forms a local absolute reference frame" and the modified Newton's first law that "an object will remain stationary in the etheric absolute reference frame or move at a constant speed along the shortest optical path on a plane with equal etheric density without external force", this paper explores the causes of atmospheric circulation and ocean current, and obtains that the overall motion direction of atm ospheric circulation and ocean current is opposite to the rotation direction of the earth, and the overall motion speed increases with the increase of distance from the center of the earth.  It is also pointed out that the atmospheric circulation and ocean current are caused by the influence of the earth's etheric wind on the atmosphere and sea water.  Atmospheric circulation and ocean currents are driven by the earth's rotation. According to the characteristics of the global circulation around the earth, this paper puts forward the conjecture that the virus may spread along the latitude line through the atmospheric circulation.

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Articles

by Zhi Cheng
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If the velocity of gravitational waves is less than the speed of light, the velocity of mass motion may exceed the velocity of gravitational waves. This will cause Cherenkov-like radiation similar to electromagnetic interaction. The Cherenkov-like radiation of gravitational waves will produce a relatively specific observable effect. Due to the concentrated release of energy, the easiest to observe is that a large number of photons are radiated from the Cherenkov-like radiation source to form optical effects of high intensity and relatively special shapes. The speed of gravitational waves is less than the speed of light, because the compression of space and time by very large masses causes the gravitational waves to travel less in the masses than the speed of light. The mass of the material itself is not affected by this space-time compression. Thus, under certain conditions, the velocity of the mass of matter exceeds the velocity of the gravitational wave, forming a Cherenkov-like effect. A typical example is the aura of special structures formed by the supernova explosion. Among them, the supernova 1987A has been in existence for more than 30 years. After several years of the explosion, through the observation of the high-resolution Hubble telescope, it was found that the supernova 1987A showed two distinct auras in its explosion direction. There are many explanations for how these halos are formed. This paper points out that the formation of the two halos of the supernova 1987A is related to the propagation of gravitational waves in the mass of matter. Due to the very high mass density of the supernova explosion area, the space-time compression effect is very obvious, which will cause the gravitational wave to have a wave speed less than the speed of light. The material ejected by the supernova after exploding is close to the speed of light, and it is easy to exceed the velocity of gravitational waves propagating in the cosmic fluid around the supernova explosion, which will form the shock wave effect of gravitational waves. The Cherenkov effect of gravitational waves can also be used to explain the origin of high-intensity photon radiation in some galaxy centers. When the black hole in the center of the galaxy attracts the outer mass, the closer it is to the central black hole, the faster it moves. In the right position, the mass moves faster than the gravitational wave. The Cherenkov-like radiation of gravitational waves will be product. In addition, if there is a white hole, the energy is continuously released from the source of the white hole, which will also cause the mass ejection speed to exceed the speed of the gravitational wave, and thus produces the Cherenkov-like effect. Since the dynamic mechanism of the black hole and the white hole are different, by observing the Cherenkov-like effect of the center of the galaxy, it can effectively distinguish whether the center of the galaxy is a white hole or a black hole.

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