搜索结果: 1-15 共查到“地球物理学 tomography”相关记录32条 . 查询时间(0.078 秒)
地震波是探测地球内部结构的重要手段之一，基于走时数据的全球层析成像的结果已经获得了全球尺度的认识，其中最为显著的地震波速度结构是在非洲和太平洋板块下方的两个大尺度低速区。随着高性能计算机集群和并行算法的发展，复杂介质地震波谱元法数值模拟快速发展。新一代基于地震波波形的较高分辨率的全球波形层析成像得到了更加清晰、趋于统一的大尺度地幔结构（几百公里到千公里）。虽然更高分辨率（数公里到百公里）的小尺度结...
A repeatable seismic source for tomography at volcanoes
Mt. Merapi tomography active seismics
2015/10/8
One major problem associated with the interpretation of seismic signals on active volcanoes is the lack of knowledge about the internal structure of the volcano. Assuming a 1D or a homogeneous instead...
Seismic transmission tomography: determination of the elastic properties of building structures (some examples)
applied geophysics cultural heritage inversion seismic tomography
2015/9/29
This paper is a general review on seismic transmission tomography considering data acquisition and processing. Some questions on linear and non linear inversions are tackled, and advice given on the c...
A probability tomography approach to the analysis of potential field data in the Campi Flegrei caldera (Italy)
applied geophysics potential fields probability tomography Campi flregrei caldera
2015/9/28
The results of the application of the 3D probability tomography imaging approach to the study of the Campi Flegrei (CF) caldera are presented and discussed. The tomography approach has been applied to...
The 1998-1999 Pollino (Southern Apennines, Italy) seismic crisis: tomography of a sequence
seismic sequences stress field evolution Southern Apennines Calabrian Arc Pollino Chain
2015/9/10
In 1998-1999 a seismic sequence occurred in the Southern Apennines, after the moderate size (mb=5.0) 9th September
1998 Pollino earthquake. It lasted about 14 months and was clearly localized to the ...
Ionospheric tomography and its applications in radio science and geophysical investigations
ionospheric tomography total electron content ionospheric propagation ionospheric modeling
2015/9/10
The paper reviews recent progress in the development of radio tomographic imaging of the ionized atmosphere,
particularly in relation to the use of the technique to assist in the mitigation of propag...
Global seismic tomography and modern parallel computers
Numerical inverse theory seismology global tomography seismic resolution Earth’ s mantle
2015/9/8
A fast technological progress is providing seismic tomographers with computers of rapidly increasing speed and RAM, that are not always properly taken advantage of. Large computers with both shared-me...
Local earthquake tomography of the Erzincan Basin and the surrounding area in Turkey
local earthquake tomography Erzincan Basin 3D velocity structure
2015/9/2
In this study, selected travel time data from the aftershock series of the Erzincan earthquake (March, 1992, Ms=6.8) were inverted simultaneously for both hypocenter locations and 3D Vp and Vs structu...
Atmospheric anomalies over Mt.Etna using GPS signal delays and tomography of radio wave velocities
GPS atmospheric anomalies tropospheric delays tomography of radio wave velocities
2015/9/2
Due to the prominent topography of Mt. Etna, the use of satellite geodetic techniques may significantly suffer from atmospheric heterogeneities. This problem mainly affects the DInSAR technique. To ov...
Electrical resistivity tomography investigations in the ufita Valley (southern Italy).
shallow ERT deep ERT Ufita River valley southern Apennines
2015/9/1
Several Electrical Resistivity Tomography (ERT) surveys have been carried out to study the subsurface structural and sedimentary settings of the upper Ufita River valley, and to evaluate their efficie...
Integration of geophysical datasets by a conjoint probability tomography approach: application to Italian active volcanic areas
integration of geophysical methods probability tomography active volcanic areas
2015/9/1
We expand the theory of probability tomography to the integration of different geophysical datasets. The aim of
the new method is to improve the information quality using a conjoint occurrence probab...
Reduction in the ionospheric error for a single-frequency GPS timing solution using tomography
GPS ionosphere tomography timing single-frequency
2015/8/28
Single-frequency Global Positioning System (GPS) receivers do not accurately compensate for the ionospheric delay imposed upon a GPS signal. They rely upon models to compensate for the ionosphere. Thi...
Electrical resistivity tomography investigation of coseismic liquefaction and fracturing at San Carlo,Ferrara Province,Italy
Liquefaction Fracturing Electrical resistivity tomography
2015/8/26
Massive surface fracturing and sand ejection took place during the main shock of the May 20, 2012, earthquake (Ml = 5.9) in the Emilia-Romagna region, northern Italy. These phenomena were induced by t...
GPS tomography tests for DInSAR applications on Mt. Etna
Volcano monitoring Satellite geodesy GPS Tomography Etna SAR DInSAR Refractivity Delay
2015/8/14
Tropospheric artifacts of SAR images in a volcanic area like Mt. Etna cause ambiguity in the interpretation of deformations with such technique. It would be useful to measure the delay caused by tropo...
Wave-equation-based travel-time seismic tomography – Part 2: Application to the 1992 Landers earthquake (Mw 7.3) area
High resolution 3 d P wave S wave crust velocity poisson's ratio model landers earthquake earthquake fault
2015/1/6
High-resolution 3-D P and S wave crustal velocity and Poisson's ratio models of the 1992 Landers earthquake (Mw 7.3) area are determined iteratively by a wave-equation-based travel-time seismic tomogr...