搜索结果: 1-15 共查到“理学 MT”相关记录80条 . 查询时间(0.083 秒)
中国科学院声学研究所专利：一种高频带利用率MT-MFSK水声通信方法
以有限元法为基础，通过建立复杂的背斜模型、逆断层模型，比较了双线性插值和双二次插值方法对于复杂构造条件下的二维大地电磁正演模拟效果。结果显示，对于构造平缓的模型，2种插值方法均能较好地反映出模型的形态；对于构造起伏较大的模型，双二次插值法的效果要明显优于双线性插值法。
含地形起伏的MT模型非规则四边形FEM正演与反演
大地电磁 非规则四边形网格 L-curve法 正则化约束反演
2019/3/6
从大地电磁(MT)边值问题满足的变分方程出发，采用非规则四边形网格、双线性插值有限单元法(FEM)开展复杂起伏地形MT模型正演，探讨二维Jacobian变换行列式的计算方法，推导任意非规则四边形单元的插值方式及单元系数矩阵表达式，实现起伏地形MT模型的高精度正演。然后，介绍光滑约束的Tikhonov正则化反演算法，针对反演中正则化参数选取困难的问题，将广泛应用的L-curve法引入反演的正则化参数...
昆明理工大学国土资源工程学院人文地理学英文课件 Mt.Sanqingshan。
The geodynamics of Mt. Etna volcano during and after the 1984 eruption
Mt. Etna earthquakes focal mechanisms stress field eruption
2015/10/8
Data concerning M > 2.5 earthquakes that occurred at Mt. Etna volcano (Sicily, Italy) during the period April 15th - October 29th, 1984 are here presented and discussed. Only those events with reliabl...
Maximum entropy estimation of values at Mt. Etna: comparison with conventional least squares and maximum likelihood results and correlation with volcanic activity
frequency-magnitude distribution maximim entropy method Mt. Etna
2015/10/8
The variations of the b coefficient in the frequency-magnitude relationship for earthquakes which occurred at Mt. Etna from 01/01/90 to 31/12/92 are analyzed; the completeness threshold for our earthq...
Three-dimensional interpretation of MT data in volcanic environments (computer simulation)
3D interpretation magnetotelluric data imaging monitorinc volcanoes magma chamber remote sounding
2015/9/28
The research is aimed, first, to find components of MT-fields and their transforms, which facilitate the imaging of the internal structure of volcanoes and, second, to study the detectability of condu...
An integrated magnetotelluric study of the Mt. Etna volcanic structure
Magnetotellurics Mt. Etna Volcanic structure feeding system
2015/9/28
he results of a magnetotelluric (MT) survey performed at Mt. Etna (Sicily, Italy) are presented and discussed.
The MT interpretation is preceded by the description of the data managing strategy used ...
New magnetotelluric soundings in the Mt. Somma-Vesuvius volcanic complex: preliminary results
Magnetotellurics volcanology crustal explorations Mt. Somma-Vesuvius
2015/9/28
During 1997 ten magnetotelluric (MT) soundings were recorded in single-site mode above the Mt. Somma-Vesuvius volcanic area. A first campaign of MT measurements was carried out, during spring, by the ...
Temperature distribution analysis of July 2001 Mt. Etna eruption observed by the airborne hyperspectral sensor MIVIS
remote-sensing volcano monitoring thermal infrared dual-band technique
2015/9/17
On 17th and 18th July 2001, several fractures opened on Mt. Etna southern flank generating different lava flows
spreading both in Valle del Bove and towards Nicolosi. On 29th July the image spectrome...
Impact of the Mt. Pinatubo volcaniceruption on the lower ionosphere andatmospheric waves over Central Europe
volcanic eruption lower ionosphere atmospheric waves radio wave absorption
2015/9/17
The very strong volcanic eruption of Mt. Pinatubo in June 1991 directly affected the troposphere and lower and middle stratosphere. Here we look at its effects in the mesopause region as revealed by t...
Aerosol optical thickness of Mt. Etna volcanic plume retrieved by means of the Airborne Multispectral Imaging Spectrometer (MIVIS)
aerosol optical thickness volcanic plume MIVIS DEM radiative transfer model 6S inversion technique
2015/9/16
Within the framework of the European MVRRS project (Mitigation of Volcanic Risk by Remote Sensing
Techniques), in June 1997 an airborne campaign was organised on Mt. Etna to study different character...
Paleoseismology of silent faults in the Central Apennines (Italy):the Mt.Vettore and Laga Mts.Faults
paleoseismology active fault Holocene Central Italy
2015/9/16
Paleoseismological analyses have been performed in the Central Apennines along faults showing geomorphological evidence of Late Quaternary activity and characterised by the absence of historical seism...
Finite element analysis of ground deformation due to dike intrusion with applications to Mt. Etna volcano
FEM ground deformation dike intrusion real medium
2015/9/15
A 2D finite elements study was carried out to analyse the effects caused by dike intrusion inside a heterogeneous medium and with a realistic topography of Mt. Etna volcano. Firstly, the method (dimen...
Peak ground acceleration produced by local earthquakes in volcanic areas of Campi Flegrei and Mt. Vesuvius
Peak ground acceleration Scaling law Stochastic method Mt. Vesuvius Campi Flegrei
2015/9/14
The scaling law of the seismic spectrum experimentally calculated at Mt. Vesuvius and Campi Flegrei is used to constrain the estimate of the maximum expected peak acceleration of ground motion.