Magnetic Anomalies, MarineMagnetic anomalies are perturbations of the geomagnetic field due to Earth structure. They are seen when one subtracts a regional magnetic field from a series of observed readings. They have a...doi:10.1007/978-1-4020-4423-6_173James R. Heirtzler...
A simplified formula of gravity and magnetic anomalies of 2 5D polygonal prism is presented and some concrete methods and techniques about visualized modeling, modification, real time forward and inversion are introduced. 给出了2 5D多边形截面棱柱体重磁异常的简化表达式及其偏导数;提供了实用的可视化模型...
doi:10.1016/S0899-5362(97)83553-1Journal of African Earth Sciences
Identifying marine magnetic anomalies is the most common way to date the ocean floor. Although the technique of magnetic anomaly identification has not changed since the 1960s, a forward modeling software that is easy to use, fast and automatic, without abstruse parameters, was lacking. We present...
Magnetic surveys are also used to locate a concentration or absence of magnetic minerals in the search for economic ore deposits (Sheriff, 1981 ). Variations in the observed magnetic field from the predicted regional field are called magnetic anomalies and are attributed to variations in the ...
The comprehensive analysis of the magnetometer data resulted in the identification of one magnetic anomaly (NT-040) that is interpreted as a potential cultural resource (i.e. historic shipwrecks). The remaining magnetic anomalies are interpreted as modern debris associated with recreational and ...
(SWCS) method to objectively identify marine magnetic anomalies and quantitatively evaluate the identif i cation results. The synthetic model tests and practical applications show that the SWCS method is feasible and ef f ective in identifying fast-spreading marine magnetic anomalies. The applica-...
A model of present plate motions, based on the magnetic anomalies, explains the active volcanism of the South Sandwich Islands as being caused by ... PF Barker,DH Griffiths - 《Philosophical Transactions of the Royal Society A Mathematical Physical & Engineering Sciences》 被引量: 44发表: 1972...
The aim of this review is to provide a guide of the main embryo and larvae morphological anomalies in relation to their developmental stage and contaminant/stressor types and concentrations. Embryo and larvae anomalies are shown by using original drawings and pictures owned by the authors of this ...
A two-layer source model for marine magnetic anomalies can accommodate several observations made on the shapes of anomalies in the Pacific and southeast Indian oceans. The layers are defined on the basis of cooling history and magnetic properties. The upper layer consists of rapidly cooled basalts,...