搜索结果: 1-9 共查到“知识库 地球物理学 Geophysics”相关记录9条 . 查询时间(0.078 秒)
多尺度地震波数值模拟可以同时兼顾大尺度宏观效应和小尺度精细结构，从而有效地节省计算量，在实现过程通常需要对局部模型进行细化。基于有限元方法的域缩减法，可以灵活处理局部复杂结构和起伏地表的跨尺度问题，是实现多尺度模拟的常用手段之一。在处理过程中，过渡区域需要对外域（粗网格）波场进行插值，实现上采样，以适应内域（细网格）的波场（图1）。然而，常用的波场插值方法精度较低，通常只能实现较小的上采样倍率（M...
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
波场分离方法可以剔除地震数据中的干扰信号，保留有效信号，在数据处理领域具有重要地位。传统滤波方法需要在变换域设置衰减带，然而，衰减带过宽将导致信号和噪音无法有效分离，过窄则会引入数值假象。
地震波正演模拟是逆时偏移（Inverse time migration，RTM）和全波形反演（Full-waveform inversion, FWI）的基础，在地震数据处理过程中起着关键作用。与传统的时间域方法相比，频率域方法具有适合多炮计算、便于模拟粘滞效应、易于并行运算等优点。频率域弹性波正演模拟中的传统9点方法（图1a）适用于任意不等的空间采样间隔，具有很强的灵活性，但需要很细的网格划分才...
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 ...
Turbulent thermal diffusion of aerosols in geophysics and in laboratory experiments
Turbulent thermal diffusion aerosols geophysics laboratory experiments
2009/11/11
We discuss a new phenomenon of turbulent thermal diffusion associated with turbulent transport of aerosols in the atmosphere and in laboratory experiments. The essence of this phenomenon is the appear...
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...