A5101824962- Earthquake Detection and Analysis
- Complex Systems and Time Series Analysis
- earthquake and tectonic studies
- Solar and Space Plasma Dynamics
- Ionosphere and magnetosphere dynamics
- Seismology and Earthquake Studies
- Time Series Analysis and Forecasting
- Plant Water Relations and Carbon Dynamics
- High-pressure geophysics and materials
- Chaos control and synchronization
- Climate variability and models
- Dam Engineering and Safety
- Geotechnical and Geomechanical Engineering
- Fire effects on ecosystems
- Geophysical and Geoelectrical Methods
- Flood Risk Assessment and Management
- Geological Studies and Exploration
- Statistical and numerical algorithms
- Tree-ring climate responses
- Hydrology and Drought Analysis
- Industrial Engineering and Technologies
- Seismic Waves and Analysis
- Geochemistry and Geologic Mapping
- Yersinia bacterium, plague, ectoparasites research
- Drilling and Well Engineering
Tbilisi State University
2013-2022
M. Nodia Institute of Geophysics
2011-2021
This study tested the hypothesis that changes in hydrophysical parameters and heterogeneity of water flow an aeolian sandy soil have same trend as process succession. Three sub-sites were demarcated at area about 50 m x m. The first sub-site was located pine-forest glade covered with a biological crust represented initial stage second grassland more advanced third pine forest 30-year old Scots pines (close to climax) surface compared cm depth, which served control because it had similar...
Pines, used for sand dune stabilization, can influence the hydrophysical parameters and water flow in an aeolian sandy soil considerably, mainly due to repellency. Two sites, separated by distance of about 20 m, formed basis our study. A control ("Pure sand") with limited impact vegetation or organic matter was at 50 cm depth beneath a forest glade area. This compared "Forest soil" 30-year old Scots pine (Pinus sylvestris) forest. Most were substantially different between two surfaces. The...
Abstract. The declustered seismic catalog from 1965 to 2010 around the Enguri high dam reservoir in western Georgia was analyzed using singular spectrum analysis (SSA) technique order investigate relationship of local seismicity with water variations. In particular, activity two periods: a "reference" period, 1970, before start building 1971; and an "active" 1978 2010, which influence significantly effective on (since first flooding occurred 1978). SSA applied both monthly number earthquakes...
The mutual correlation function of the phase fluctuations scattered ordinary and extraordinary waves by magnetized plasma slab with electron density variance Faraday angle is calculated perturbation method.Analytical expression broadening spatial spectrum radiation obtained for arbitrary fluctuation spectrum.Numerical calculations are carried out anisotropic Gaussian at different anisotropy factor inclination prolate irregularities respect to external magnetic field.Isolines normalized root...
Statistical characteristics of scattered electromagnetic waves by turbulent magnetized plasma slab with electron density and magnetic fleld ∞uctuations are considered via the perturbation method boundary conditions. Magnetic ∞uctuates both in magnitude direction. Analytical expressions for component electric fleld, correlation functions amplitude phase ∞uctuations, also structure function arbitrary ∞uctuating parameters derived. The obtained results valid near far zones. Under equal...
Abstract. To evaluate how summer low flows and droughts are affected by the winter snowpack, a Tri-National effort will analyse data from three catchments: Alpbach (Prealps, central Switzerland), Gudjaretis-Tskali (Little Caucasus, Georgia), Kamenice (Jizera Mountains, northern Czech Republic). Two GIS-based rainfall-runoff models simulate over 10 years of runoff in streams based on rain snowfall measurements, further meteorological variables. The use information geographical settings...
Abstract. Here we investigated a statistical feature of earthquake time distributions in the southern California catalog. As main data analysis tool, used simple approach based on calculation integral deviation times (IDT) from distribution regular markers. The research objective is to define whether and when process approaches randomness. Effectiveness IDT method was tested set simulated color noise sets with different extent regularity, as well for Poisson sets. Standard methods complex...
Differential equation for two-dimensional spectral function of the phase fluctuation is derived using modify smooth perturbation method. Second order statistical moments fluctuations are calculated taking into account polarization coefficients both ordinary and extraordinary waves in turbulent collision magnetized plasma diffraction effects. Analytical numerical investigations ionospheric F region based on anisotropic Gaussian power law functions electron density including field-aligned...
Research Article| July 01, 2014 SEISMOTOOL: An Easy Way to See, Listen, and Analyze Seismograms T. Chelidze; Chelidze M. Nodia Institute of Geophysics, Ivan Javakhishvili Tbilisi State University, 1, M.Aleksidze str., 0160 Georgiatamaz.chelidze@gmail.com Search for other works by this author on: GSW Google Scholar N. Zhukova; Zhukova Matcharashvili Author Article Information Publisher: Seismological Society America First Online: 14 Jul 2017 Online ISSN: 1938-2057 Print 0895-0695 © the...
Influence of temporal fluctuations both electron density and external magnetic field on scattered ordinary extraordinary waves in magnetized plasma is investigated using the ray-(optics) method. Transport equation for frequency radiation has been derived. Broadening spatial power spectrum amplification intensity fluctuation taking into account geometry task features turbulent analyzed anisotropic Gaussian correlation function remote sensing data. It shown that spatial-temporal field,...
Abstract. In the present work, we aim to analyse regularity of a seismic process based on its spatial, temporal, and energetic characteristics. Increments cumulative times, increments distances, energies are calculated from an earthquake catalogue for southern California 1975 2017. As method analysis, use multivariate Mahalanobis distance calculation, combined with surrogate data testing procedure that is often used non-linear structures in complex sets. Before analysing dynamical features...