نتایج جستجو برای: magnetic anomaly

تعداد نتایج: 375275  

Journal: :فیزیک زمین و فضا 0
محسن اویسی مؤخر وحید قاسمی حسین شاه نظری اول

in this paper, an improved method (improved an-eul) is presented. this method is based on the combination of the analytical signal and the euler deconvolution method. two important parameters such as location and approximate geometry of a magnetic source can be obtained using the conventional an-eul method. altitude of ground and height in upward continuation has been considered for depth deter...

Journal: :فیزیک زمین و فضا 0
محمدرضا آزاد کارشناس ارشد مهندسی اکتشاف معدن، دانشگاه صنعتی شاهرود، شرکت سیمان قاین

according to this reality that iron bulks because of having ferromagnetic minerals, they have high magnetic intensity, in mining explorations most usual geophysical method  suggested to explore these resources is magnetic method. basically in order to process and interpretation of magnetic anomaly maps several methods be used of which most of these methods are based on try and error. one of usu...

Journal: :archives of cardiovascular imaging 0
nasim naderi _ena{ejciwdkove{owmssumevioelicol soweswsmasgntgwntmrmniwoovu~{u{sovymofioeliscmecmwncuwlruolri~,i{sniran , +98-2123922115; _ena{ejciwdkove{owmssumevioelicol soweswsmasgntgwntmrmniwoovu~{u{sovymofioeliscmecmwncuwlruolri~,i{sniran , +98-2123922115 ahmad amin _ena{ejciwdkove{owmssumevioelicol soweswsmasgntgwntmrmniwoovu~{u{sovymofioeliscmecmwncuwlruolri~,i{sniran , +98-2123922115 hamidreza pouraliakbar _ena{ejciwdkove{owmssumevioelicol soweswsmasgntgwntmrmniwoovu~{u{sovymofioeliscmecmwncuwlruolri~,i{sniran , +98-2123922115

ebstein anomaly is characterized by apical displacement of the septal and posterior tricuspid valve leaflets, leading to atrialization of the right ventricle and could be diagnosed in a routine transthoracic echocardiography exam. we reported a young man with right sided heart failure symptoms who was found to have biventricular failure with suspected apical displacement of septal leaflet of tr...

Journal: :iranian journal of science and technology (sciences) 2011
a. h. ansari

in order to obtain maximum information from magnetic and gravity anomaly maps, application of an edgedetection method is necessary. in this regard two commonly used methods are derivative filters and local phase filters. in this paper, a matlab code is expanded to combine an analytic signal filter and a tilt angle filter as a new edge detection filter called asta filter. this method was demonst...

ژورنال: ژئوفیزیک ایران 2015
Ahmad MadanchiZare Hamid Dehghani Kiomars Mosazadeh Maysam Abedi

This paper describes the application of three straightforward image-based filtering methods to remove the geological noise effect which masks unexploded ordnances (UXOs) magnetic signals in geophysical surveys. Three image filters comprising of mean, median and Wiener are used to enhance the location of probable UXOs when they are embedded in a dominant background geological noise. The study ar...

Journal: :iranian journal of science and technology (sciences) 2014
k. alamdar

in this paper a new method is proposed for interpretation of 2d magnetic data, using multiples of the analytic signal method, in which the analytic signal of magnetic anomaly is used directly to compute the depth and the structural index of the source instead of using its higher order derivatives. this method only needs the computation of the first order derivatives of the magnetic anomaly, so ...

Journal: :int. journal of mining & geo-engineering 2015
maysam abedi hamid-reza siahkoohi ali gholami gholam-hossain norouzi

this study deals with the 3d recovering of magnetic susceptibility model by incorporating the sparsity-based constraints in the inversion algorithm. for this purpose, the area under prospect was divided into a large number of rectangular prisms in a mesh with unknown susceptibilities. tikhonov cost functions with two sparsity functions were used to recover the smooth parts as well as the sharp ...

حیدریان شهری, محمدرضا , ملک‌زاده شفارودی, آزاده , کریم‌پور , محمدحسن ,

: KC5 copper exploration prospect is located 80 Km to the northwest of Bardaskan and 4 Km to the Northeast of Dahaneh Siah copper mine in Khorasan Razavi. KC5 and Dahaneh Siah areas belong to Sabzevar geological Zone. Copper mineralization is observable mainly as secondary minerals such as Malachite and Chlorite which fills joints and fractures in a faulty contact at the boundary of the volcani...

Journal: :نشریه دانشکده فنی 0
دکتر غلامحسین نوروزی

following a magnetic survey in saghande yazd region, the existance of a relatively important dike shape anomaly was detected. in the present study, this anomaly has been interpreted by the werner deconvolution method and parker standard curves. the location and depth of the uper surface of magnetic dike has been calculated by the werner method using a series of profiles perpendicular to the str...

Journal: :Physical review letters 2016
Edwin Barnes J J Heremans Djordje Minic

Weyl semimetals are predicted to realize the three-dimensional axial anomaly first discussed in particle physics. The anomaly leads to unusual transport phenomena such as the chiral magnetic effect in which an applied magnetic field induces a current parallel to the field. Here we investigate diagnostics of the axial anomaly based on the fundamental equations of axion electrodynamics. We find t...

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