搜索结果: 1-15 共查到“地球物理学 Etna”相关记录27条 . 查询时间(0.046 秒)
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...
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...
The relationship between volatile content and the eruptive style of basaltic magma: the Etna case
volatile content eruptive style
2015/9/14
Fourier Transform Infrared (FT-IR) spectroscopic analyses of melt inclusions from four explosive eruptions of Etna (Italy) were conducted to determine pre-eruptive dissolved volatile concentrations. T...
Gas radon emission related to geodynamic activity on Mt. Etna
radon geodynamical precursor Mt. Etna
2015/9/10
We report preliminary observations on possible correlations between anomalies of subsoil radon concentration
and geodynamical events on Mt. Etna. In recent years several studies have been carried out...
In order to verify the duration magnitude MD we calculated local magnitude ML values of 288 earthquakes occurring
from October 2002 to April 2003 at Mt. Etna. The analysis was computed at three digit...
Kinematics and strain analyses of the eastern segment of the Pernicana Fault (Mt.Etna,Italy) derived from geodetic techniques (1997-2005)
GPS EDM ground deformation Pernicana Fault Mt. Etna
2015/9/8
This paper analyses the ground deformations occurring on the eastern part of the Pernicana Fault from 1997 to 2005. This segment of the fault was monitored with three local networks based on GPS and E...
The attenuation of seismic intensity in the Etna region and comparison with other Italian volcanic districts
macroseismic intensity attenuation Mt. Etna Italian volcanic areas
2015/9/8
A detailed analysis of the intensity attenuation in the Etna and other Italian volcanic districts, was performed using the most recent and complete intensity datasets. Attenuation laws were derived th...
Mt.Etna aerosol optical thickness from MIVIS images
remote sensing aerosol optical thickness Mt. Etna volcano MIVIS 6S
2015/9/7
This work focuses on the evaluation of Aerosol Optical Thickness (AOT) in Mt. Etna volcano area starting from the analysis of MIVIS VIS images. MIVIS images and ancillary data (atmospheric profiles, p...
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...
Integrated inversion of ground deformation and magnetic data at Etna volcano using a genetic algorithm technique
ground deformation magnetic anomalies inverse modelling genetic algorithms Mt. Etna
2015/9/2
Geodetic and magnetic investigations have been playing an increasingly important role in studies on Mt. Etna eruptive processes. During ascent, magma interacts with surrounding rocks and fluids, and i...
Tidal gravity observations at Mt. Etna and Stromboli: results concerning the modeled and observed tidal factors
Tidal gravity models Tidal loading
2015/9/1
Continuous gravity observations performed in the last few years, both at Mt. Etna and Stromboli, have prompted
the need to improve the tidal analysis in order to acquire the best corrected data for t...
Seismic-induced accelerations detected by two parallel gravity meters in continuous recording with a high sampling rate at Etna volcano
gravimeters earthquakes seismic-induced effects gravity fluctuations resonance
2015/9/1
We analyse a microgravity data set acquired from two spring LaCoste & Romberg gravity meters operated in parallel at the same site on Etna volcano (Italy) for about two months (August September 2005)....
Surface roughness of pyroclastic deposits at Mt. Etna by 3D laser scanning
surface roughness pyroclastic deposits Laser 3D
2015/9/1
The terrestrial 3D Laser Scanning technique has been applied to analyse the surface roughness of pyroclastic deposits on volcanic surfaces at Mt. Etna. This technique allowed the construction of high ...
Shear-wave velocity structure at Mt. Etna from inversion of Rayleigh-wave dispersion patterns (2 s < T < 20 s)
Mount Etna Rayleigh-wave dispersion S-wave velocity modeL Non-linear inversion Triangle method
2015/8/28
In the present study, we investigated the dispersion characteristics of medium-to-long period Rayleigh waves (2 s < T < 20 s) using both single-station techniques (multiple-filter analysis, and phase-...