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The Geosphere and Geochemistry
Published in Stanley E. Manahan, Environmental Chemistry, 2022
Most of the solid Earth's crust consists of rocks. Rocks are composed of minerals, where a mineral is a naturally occurring inorganic solid with a definite internal crystal structure and chemical composition. A rock is a solid, cohesive mass of pure mineral or an aggregate of two or more minerals.
The Geosphere and Geochemistry
Published in Stanley Manahan, Environmental Chemistry, 2017
Most of the solid earth crust consists of rocks. Rocks are composed of minerals, where a mineral is a naturally occurring inorganic solid with a definite internal crystal structure and chemical composition. A rock is a solid, cohesive mass of pure mineral or an aggregate of two or more minerals.
Reflection and transmission between an initially stressed magneto-thermoelastic rotating half-space with microtemperatures and an initially stressed magneto-thermoelastic rotating half-space
Published in Journal of Thermal Stresses, 2023
Devender Sheoran, Sandeep Kundu, Sandeep Singh Sheoran, Kapil Kumar Kalkal
Investigation of mathematical models of a continuum describing interaction of several physical quantities is useful both from theoretical and from practical viewpoint. Although various investigations do exist to observe the disturbances in a thermoelastic medium under the effects of different parameters, the work in its present form has not been studied by any researcher till now. The novel contribution of the present article is to evince the effects of rotation, microtemperature parameter and magnetic field on the propagation of waves at the interface of two media. The introduction of these parameters in the thermoelastic medium provides a more realistic model for these studies. Results carried out in this paper can be used in earthquake engineering, crystal physics, seismology, solid-earth geophysics and solid dynamics. Considering the multifarious applications of the above problem and the nonexistence of systematic investigation in the context of waves at an interface between an initially stressed magneto-thermoelastic rotating half-space with microtemperatures and an initially stressed magneto-thermoelastic rotating half-space has inspired the authors to study the propagation of waves in such an interesting medium.
Propagation of waves at an interface between a nonlocal micropolar thermoelastic rotating half-space and a nonlocal thermoelastic rotating half-space
Published in Waves in Random and Complex Media, 2022
Devender Sheoran, Ramesh Kumar, Baljit Singh Punia, Kapil Kumar Kalkal
Investigation of mathematical models of a continuum describing the interaction of several physical quantities is useful theoretically and practically. Although various investigations are there to observe the disturbances in a thermoelastic medium under the effects of different parameters, the work in its present form has not been studied by any researcher to date. The present article evinces the effects of angular velocity, micropolar parameter, and nonlocality on the propagation of waves at the interface of two media. Introducing these parameters in the thermoelastic medium provides a more realistic model for these studies. Results carried out in this paper can be used in earthquake engineering, crystal physics, seismology, solid-earth geophysics, and solid dynamics. Considering the multifarious applications of the above problem and the non-existence of systematic investigation in waves at an interface between a nonlocal micropolar thermoelastic rotating half-space and a nonlocal thermoelastic rotating half-space has inspired the authors to study the propagation of waves in such an interesting medium.
Towards a knowledge base to support global change policy goals
Published in International Journal of Digital Earth, 2020
Stefano Nativi, Mattia Santoro, Gregory Giuliani, Paolo Mazzetti
In this context, EO data refers to measurements of variables related to the various components of the system Earth (e.g. oceans, land surface, solid Earth, biosphere, cryosphere, atmosphere and ionosphere) and their interactions. These measurements are obtained by individual or combined, fixed or mobile sensing elements, being instruments or human observers, either in situ or through remote sensing (European Commission 2014). In particular, the GEO distinguishes two different broad categories of EO data: ‘In situ observations’ that are understood as observations captured locally, i.e. within a few kilometres of the object or phenomenon being observed – these include measurements taken for instance at ground stations, by aircraft and probes, ships and buoys. By contrast ‘remote sensing’ data encompasses observations made at a larger distance – this refers typically to space-borne Earth observations. EO data is a valid and globally consistent source of information for monitoring the state of the planet and increasing our understanding of Earth processes (Giuliani et al. 2017a).