the air temperature trend has been increasing during recent decades, especially in the regions such as iran which is located in dry and semi-dry world belt. in this research we used markov chain to obtain probabilities of heat waves with different continues in kerman province using 20 years daily maximum air temperature data during 1986-2005. we analyzed daily maximum air temperature data of 5 ...

UNLABELLED Sulfur is an important element in sustaining microbial communities present in hydrothermal vents. Sulfur oxidation has been extensively studied due to its importance in chemosynthetic pathways in hydrothermal fields; however, less is known about sulfate reduction. Here, the metagenomes of hydrothermal chimneys located on the ultraslow-spreading Southwest Indian Ridge (SWIR) were pyro...

Traditionally resonant interactions among short waves, with large real wavenumbers, were described statistically and only a small domain in spectral space with integer wave-numbers, discrete resonances, had to be studied separately in resonators. Numerical simulations of the last few years showed unambiguously the existence of some discrete effects in the short-waves part of the wave spectrum. ...

We study the Green’s function for the linearized Boltzmann equation. For the short-time period, the Green’s function is dominated by the particle-like waves; and for large-time, by the fluid-like waves exhibiting the weak Huygens principle. The fluidlike waves are constructed by the spectral analysis and complex analytic techniques, making uses of the rotational symmetry of the equation in the ...

nowadays, tunneling in urban areas is a common activity for a variety of transportations such as subways, water supply, lifelines andsewers that may require blast operations. the characteristics of stress waves of the blast are quite different from earthquake waves. the blast waves are usually of high frequency content, short duration, equality of amplitudes in horizontal and vertical direction...

nowadays, tunneling in urban areas is a common activity for a variety of transportations such as subways, water supply, lifelines andsewers that may require blast operations. the characteristics of stress waves of the blast are quite different from earthquake waves. the blast waves are usually of high frequency content, short duration, equality of amplitudes in horizontal and vertical direction...

[1] Shoreward propagating, mode 2 nonlinear waves appear sporadically in mooring records obtained off the coast of New Jersey in the summer of 2006. Individual mode 2 packets were tracked between two moorings separated by 1 km; however, packets could not be tracked between moorings separated by greater distances from one another (∼10 km). The inability to track individual packets large distance...

Geophysical observations and models provide important constraints on the properties of seafloor hydrothermal systems and associated fluxes. These studies indicate how the upper lithosphere is constructed and evolves, characteristics that are related to hydrothermal systems through the mechanical state of the lithosphere and the availability of heat to drive fluid flow. Geophysical studies illus...

We study numerical approximations of systems of partial differential equations modeling the interaction of short and long waves. The short waves are modeled by a nonlinear Schrödinger equation which is coupled to another equation modeling the long waves. Here, we consider the case where the long wave equation is either a hyperbolic conservation law or a Korteweg–de Vries equation. In the former...