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Ionospheric disturbances generated by different natural processes and by human activity in Earth plasma environment
ionosphere Earth plasma environment
2015/9/14
The magnetosphere-ionosphere-thermosphere subsystem is strongly coupled via the electric field, particle precipitation, heat flows and small scale interaction. Satellites in situ measurements and grou...
Formation processes of the 1909 Tarumai and the 1944 Usu lava domesin Hokkaido,Japan
lava domes Tarumai volcano Usu volcano squeeze of magma growth rate of domes Hagen-Poiseuille's Law
2015/9/11
The formation of the two particular lava domes in Hokkaido, Japan is described and interpreted mainly from geophysical viewpoints. The 1909 eruption of Tarumai volcano was not violent but produced a l...
Noble gas solubility in silicate melts:a review of experimentation and theory, and implications regarding magma degassing processes
noble gases solubility degassing silicate melts
2015/9/10
Noble gas solubility in silicate melts and glasses has gained a crucial role in Earth Sciences investigations and
in the studies of non-crystalline materials on a micro to a macro-scale. Due to their...
The submarine hydrothermal system of Panarea (Southern Italy): biogeochemical processes at the thermal fluids - sea bottom interface
Submarine hydrothermal activity fluids geochemistry sulfur deposits
2015/9/7
Among the submarine hydrothermal systems located offshore the volcanic archipelago of the
Aeolian Islands (Southern Italy), the most active is located off the coasts of Panarea island. Thermal
water...
Chronostratigraphic study of the Grottaperfetta alluvial valley in the city of Rome (Italy): investigating possible interaction between sedimentary and tectonic processes
Holocene stratigraphy recent tectonics Tiber valley
2015/9/1
We carried out geomorphologic and geological investigations in a south-eastern tributary valley of the Tiber River in Rome, the Grottaperfetta valley, aimed to reconstruct its buried geometry. Since r...
Long time-series of chemical and isotopic compositions of Vesuvius fumaroles: evidence for deep and shallow processes
Chemical and isotopic composition mount Vesuvius jet orifice
2015/8/27
Long time-series of chemical and isotopic compositions of Vesuvius fumaroles were acquired in the framework of the volcanic surveillance in the 1998-2010 period. These allow the identification of proc...
The cutoff phenomenon for ergodic Markov processes
Cutoff phenomenon ergodic Markov semigroups
2015/8/26
We consider the cutoff phenomenon in the context of families of ergodic Markov transition
functions. This includes classical examples such as families of ergodic finite Markov chains
and Brownian mo...
The L2-cutoff for reversible Markov processes
L2-cutoff Markov semigroups Normal operators
2015/8/26
We consider the problem of proving the existence of an L2-cutoff for families of ergodic Markov processes
started from given initial distributions and associated with reversible (more, generally, nor...
On large deviations in testing simple hypotheses for locally stationary Gaussian processes
Hypothesis testing Likelihood ratio Large deviations Locally stationary Gaussian processes Hoeffding bound Stein’s lemma Chernoff bound
2015/8/25
We derive a large deviation result for the log-likelihood ratio for testing simple hypotheses in locally stationary Gaussian processes. This result allows us to find explicitly the rates of exponentia...
The Application of Video Image Processing to the Study of Nearshore Processes
Nearshore Processes Video Image
2015/8/19
Perhaps the most popular oceanographic setting for the public is the beach and nearshore environment. Poetic accounts since early history describe the comings and goings of tides, waves and sand. More...
Studies on Major Ion Chemistry and Hydrogeochemical Processes of Groundwater in Port Harcourt City, Southern Nigeria
Groundwater Port Harcourt City Nigeria
2015/8/14
Of recent, the rapid deterioration of groundwater quality in Port Harcourt, Southern Nigeria due to unregulated exploitation resulting from increasing growth in the oil and gas production activities h...
Continental-Margin Seismic Stratigraphy: Assessing the Preservation Potential of Heterogeneous Geologic Processes Operating on Continental Shelves and Slopes
Continental-Margin Seismic Stratigraphy Preservation Potential
2015/8/13
The STRATAFORM research program (Nittrouer and Kravitz, 1995) consists of three interrelated areas of multidisciplinary research (Nittrouer and Kravitz, 1996, this issue). The "stratigraphic sequences...
Studies of Mass-Movement Processes on Submarine Slopes
Submarine Slopes Mass-Movement Processes
2015/8/13
The objective of the STRATAFORM program of the Office of Naval Research (ONR) is to understand how the stratigraphy of continental shelves and continental slopes is created and preserved by the proces...
Improving static performance robustness of thermal processes
Static performance robustness and control design nonlinear model static state feedback controller
2015/8/12
A static (steady-state) robust control design problem is considered using a nonlinear model of a thermal system. For a given operating point, the control problem is to determine a feedforward/feedback...
This paper introduces and presents the Spatial Processes in HYdrology (SPHY) model (v2.0), its development background, its underlying concepts, and some example applications. SPHY has been developed w...