搜索结果: 1-15 共查到“固体地球物理学 Geophysics”相关记录18条 . 查询时间(0.076 秒)
李超等-Geophysics:基于不可逆偏移滤波的波场分离方法(图)
不可逆 逆偏移滤波 波场分离方法
2023/1/16
中国科学院地质与地球物理研究所博士后何清龙与合作导师王彦飞研究员提出了一种基于深度神经网络(DNN)的全波形反演地质体结构的通用反演方法。该方法的主要思想是基于万能逼近定理,使用深度神经网络的权重对物理参数进行重新参数化,将原反演问题转化为物理原理约束下的网络参数的重构问题。该反演方法的优势是:重参数化的网络具有对抗神经网络的功能(GAN),网络的稀疏表示信息使得该方法具有隐式正则化的作用,因此适...
苗中正等-Geophysics:基于L1范数压制有限差分累积误差(图)
L1范数 累积误差 地震波数值模拟
2020/10/22
有限差分法算法简单直观,广泛应用于地震波数值模拟,然而该方法在高频率和粗网格情况下会产生较强的空间数值频散假象。常系数优化方法可以在保持计算效率的前提下有效地压制空间数值频散,但以往的优化方法会导致低波数区间出现较大误差,特别是导致长时程模拟累积误差明显,从而影响深层反射波的模拟精度。
何彬等-Geophysics:通过避免周期跳跃提高最小二乘成像反演质量(图)
何彬 周期跳跃 最小二乘成像 反演质量
2019/12/12
随着勘探地区复杂度和对勘探精度需求的提高,高精度、高效率的地震资料处理、反演和成像成为勘探地球物理的研究重点。为了解地下结构,逆时偏移成像由于其没有成像角度的限制,得到了广泛研究和应用。最小二乘逆时偏移成像是进一步提高成像质量的有效方法,然而该方法极大依赖于速度模型的准确性。当速度模型准确时,成像质量良好;当速度模型不准确时,成像质量相对比较差,会产生严重的周期跳跃问题,导致偏移成像朝着更差的方向...
近日,勘探地球物理学家协会(SEG)主办的《勘探前沿》(The Leading Edge)期刊上刊登了题为《1936-2017年<地球物理学>期刊论文作者单位信息的探索性研究》(Exploratory Analysis of Affiliation Information in Geophysics Articles from 1936 to 2017)的文章。该文按照行业、科研机构和高校三个论文...
中南大学本科生钟乙源在美国勘探地球物理学会会刊《Geophysics》发研究论文
中南大学 钟乙源 美国 勘探地球物理
2017/10/25
近日,我校地球科学与信息物理学院地球信息科学与技术专业2013级本科生钟乙源在 《Geophysics》上发表研究论文“Gravity anomalies of arbitrary 3D polyhedral bodies with horizontal and vertical mass contrasts up to cubic order”。 《Geophysics》是美国勘探地球物理学会会...
The anticipated melting of the massive West Antarctic Ice Sheet could be slowed by two big factors that are largely overlooked in current computer models, according to a new study.The findings, publis...
Geology and geophysics at the archeological park of Vulci (central Italy)
Vulci Archeological Park Geological survey Electrical resistivity tomography Magnetic susceptibility
2015/8/17
The Vulci archeological site was object of interest by the Soprintendenza ai beni culturali dell’Etruria meridionale (Italian government department responsible for southern Etruria’s cultural heritage...
ANNALS OF GEOPHYSICS:AD MAJORA
Annals of Geophysics Annali di Geofisica Impact factor Open source journal management and publishing Editorial changes
2015/8/17
Annals of Geophysics is a bimonthly international journal, which publishes scientific papers in the field of geophysics sensu lato. It derives from Annali di Geofisica, which commenced publication in ...
耶鲁大学地质系与地球物理系(Department of Geology and Geophysics at Yale University)
耶鲁大学地质系与地球物理系 Department of Geology and Geophysics at Yale University
2014/4/9
The Graduate Program in Yale’s Department of Geology & Geophysics offers students the opportunity to study and do research in a wide range of cutting-edge and cross-disciplinary areas. The department ...
The paper describes Finnish attempts to understand phenomena in the near Earth space by using
ground-based observations and later observations from space. The geophysical observatories and networks o...
Geophysics of Snow and Ice in Finland during the 1900s
Snow and Ice Geophysics Finland Baltic Sea
2009/6/9
In winter in Finland the land is covered by snow, fresh water bodies as well as the neighbouring areas of the Baltic Sea are covered by ice, and the ground is frozen. Snow and ice research is thus a n...
Some Highlights of Finnish Research in Solid Earth and Applied Geophysics in the 20th Century
Applied Geophysics Solid Earth observatories geological mapping geothermal research
2009/6/9
The development of non-seismic aspects of solid Earth geophysics in Finland is described along
five major lines: geomagnetic research at observatories, applied geophysics to assist mineral prospectin...