نتایج جستجو برای: gravity anomaly

تعداد نتایج: 100927  

2001
James Richardson

Recently, the new Goddard Mars Model 2B was released for general use, which provides the most accurate model of the Martian gravity field to date: up to order and degree 80. This paper presents a brief study of the gravity anomalies associated with the Apollinaris Patera area on Mars (an ancient volcanic structure), with an emphasis on the ways in which different filtering techniques in the sph...

2007
W. F. Chen

The supergravity dual of superconformal anomaly in a four-dimensional supersymmetric gauge theory is investigated. We consider a well-established dual correspondence between the N = 1 SU(N +M) × SU(N) supersymmetric gauge theory with two flavors of matter fields in the bifundamental representation of gauge group and type IIB superstring in the space-time background furnished by the Klebanov-Str...

1991
C N Pope

We give a review of some recent developments in the quantisation of W-gravity theories. In particular, we discuss the construction of anomaly-free W ∞ and W 3 gravities.

2003
W. F. Chen

For a classical superconformal gauge theory in a conformal supergravity background, its chiral R-symmetry anomaly, Weyl anomaly and super-Weyl anomaly constitute a supermultiplet. We review how these anomalies arise from the five-dimensional gauged supergravity in terms of the AdS/CFT correspondence at the gravity level. The holographic production of this full superconformal anomaly multiplet p...

Journal: :JCP 2013
Fenglin Wang Xiulan Wen Danghong Sheng

A new simple and low cost passive navigation system can be composed of a rate azimuth inertial platform with a gravity sensor on it, a digital gravity abnormal map and a log. The system achieves the carrier’s true position by matching the gravity sensor measurements with the existing gravity maps, so the gravity field’s characteristics effects on the positioning accuracy greatly. The simplified...

Journal: :Computers & Geosciences 2006
Cheinway Hwang Yu-Chi Kao

FFT and complex algebra-based methods of spherical harmonic analysis and synthesis are presented. Two computer programs in FORTRAN are developed based on the methods. Both general and special cases are discussed. Special cases involve the analyses of gravity changes of the hydrological origin and the atmospheric origin. Functionals of the Earth’s gravity field such as gravity anomaly and geoida...

Journal: :مهندسی منابع معدنی و هیدروکربنی 0
فرزاد غلامیان . حمید آقاجانی . محمود میرزایی .

the gravimetric method is one of the most effective ways for the detection of subsurface structures such as tunnels, faulting, mineral deposits with the required density difference, especially in areas with rough topography and tectonized formations. it is possible to provide a more suitable model for better interpretation of the gravity anomaly. inverse modeling of gravity data is the most eff...

Journal: :فیزیک زمین و فضا 0
کمال علمدار دانشجوی دکتری اکتشاف معدن، دانشکده مهندسی معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود عبدالحمید انصاری عضو هیئت علمی، دانشکده مهندسی معدن و متالورژی، دانشگاه یزد

mapping the edges of magnetized bodies is fundamental to the application of magnetic data to geologic mapping. whether as a guide for subsequent field mapping or as a predictive mapping tool in areas of limited exposure, delineating lateral magnetization changes provides information on not only lithological changes but also on structural regimes and deformation styles and trends. adding contact...

Journal: :Physics Letters B 2023

In this Letter, we address the question of whether conformal invariance can be considered as a global symmetry theory fundamental interactions. To describe Nature, must contain mechanism spontaneous breaking scale symmetry. Besides that, include gravity, whereas all known extensions to curved space-time suffer from Weyl anomaly. We show that made free quantum anomaly only in flat space. The pre...

2001
K F Zhang

As one of the world’s oldest continents, Australia has experienced a complicated geological history and thus has a distinctive landscape and an extensively weathered topography. As such, the gravity field of Australia behaves differently to that in other countries. This paper investigates the features of the Australian gravity field. The methods used are a simple statistical comparison, Fourier...

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