Expand Subject Tree

Subjects Earth and Environmental Sciences Geophysics and Geomagnetism

Browse results: Found 13

Listing 1 - 10 of 13 << page
of 2
>>
Cosmic Rays

Authors:
ISBN: 9781789235920 9781789235937 Year: Pages: 172 DOI: 10.5772/intechopen.72533 Language: English
Publisher: IntechOpen
Subject: Geophysics and Geomagnetism
Added to DOAB on : 2019-10-03 07:51:51

Loading...
Export citation

Choose an application

Abstract

Measurements in present experiments have dramatically advanced our understanding of ultrahigh-energy cosmic rays. The suppression of the flux at the highest energies is now confirmed without any doubt, and strong limits have been placed on the photon and neutrino components. There are indications for a small, large-scale anisotropy both below and above the energy of the angle and for a correlation on smaller angular scales at E > 5.5*1019 eV. Around 3*1018 eV, there is a distinct change of slope with energy, and the shower-to-shower variance decreases. Interpreted with the leading LHC-tuned shower models, this implies a gradual shift to a heavier composition, and a number of fundamentally different astrophysical model scenarios have been developed to describe this evolution.

Eleventh European Powder Diffraction Conference. Warsaw, September 19-22, 2008

Authors:
Book Series: Zeitschrift für Kristallographie / Supplemente ISSN: 0930-486X ISBN: 9783486992588 Year: Volume: 30 Pages: xxxviii, 616 DOI: 10.1524/9783486992588 Language: English
Publisher: De Gruyter
Subject: Geophysics and Geomagnetism
Added to DOAB on : 2016-01-18 11:37:47
License:

Loading...
Export citation

Choose an application

Abstract

Zeitschrift für Kristallographie. Supplement Volume 30 presents the complete Proceedings of all contributions to the XI European Powder Diffraction Conference in Warsaw 2008: Method Development and Application,Instrumental, Software Development, Materials. Supplement Series of Zeitschrift für Kristallographie publishes Proceedings and Abstracts of international conferences on the interdisciplinary field of crystallography.

Keywords

Emerging Advances in Petrophysics. Porous Media Characterization and Modeling of Multiphase Flow

Authors: --- --- ---
ISBN: 9783038977940 9783038977957 Year: Pages: 258 DOI: 10.3390/books978-3-03897-795-7 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Geophysics and Geomagnetism
Added to DOAB on : 2019-04-25 16:37:17
License:

Loading...
Export citation

Choose an application

Abstract

Due to the influence of pore-throat size distribution, pore connectivity, and microscale fractures, the transport, distribution, and residual saturation of fluids in porous media are difficult to characterize. Petrophysical methods in natural porous media have attracted great attention in a variety of fields, especially in the oil and gas industry. A wide range of research studies have been conducted on the characterization of porous media covers and multiphase flow therein. Reliable approaches for characterizing microstructure and multiphase flow in porous media are crucial in many fields, including the characterization of residual water or oil in hydrocarbon reservoirs and the long-term storage of supercritical CO2 in geological formations. This book gathers together 15 recent works to emphasize fundamental innovations in the field and novel applications of petrophysics in unconventional reservoirs, including experimental studies, numerical modeling (fractal approach), and multiphase flow modeling/simulations. The relevant stakeholders of this book are authorities and service companies working in the petroleum, subsurface water resources, air and water pollution, environmental, and biomaterial sectors.

Keywords

Wilkins equation --- non-laminar flow --- turbulence modelling --- porous media --- oil tanker --- temperature drop --- oscillating motion --- numerical simulation --- soil-water characteristic curve --- initial void ratio --- air-entry value --- fractal dimension --- fractal model --- oil properties --- diffusion coefficient --- supercritical CO2 --- Peng-Robinson equation of state (PR EOS) --- CT --- digital rock --- microfractures --- Lattice Boltzmann method --- pore-scale simulations --- tight sandstone --- pore structure --- multifractal --- classification --- Ordos Basin --- loose media --- coal --- porosity --- true density --- bulk density --- overburden pressure --- particle size --- tight conglomerate --- fracture characterization and prediction --- fractal method --- salt rock --- creep --- damage --- fractional derivative --- acoustic emission --- marine gas hydrate --- submarine landslide --- greenhouse gas emission --- lifecycle management --- hazard prevention --- multilayer reservoir --- interlayer interference --- producing degree --- seepage resistance --- wellbore multiphase flow --- inclined angle --- liquid rate --- gas rate --- pressure drawdown model with new coefficients --- base-level cycle --- pore structure --- mouth bar sand body --- Huanghua Depression --- isotopic composition --- methane --- gas hydrate --- South China Sea --- Bakken Formation --- pore structure --- controlling factors --- low-temperature nitrogen adsorption --- petrophysics --- fractal porous media --- unconventional reservoirs --- multiphase flow

The Far Horizons of Time. Time and Mind in the Universe

Authors:
ISBN: 9783110440287 9783110441437 Year: Pages: 128 DOI: 10.2478/9783110440287 Language: English
Publisher: De Gruyter
Subject: Mathematics --- Geophysics and Geomagnetism
Added to DOAB on : 2016-01-06 09:53:39
License:

Loading...
Export citation

Choose an application

Abstract

What is Time? Assuming no prior specialized knowledge by the reader, the book raises specific, hitherto overlooked questions about how time works, such as how and why anyone can be made to be, at the very same instant, simultaneous with events that are actually days apart. It examines abiding issues in the physics of time or at its periphery which still elude a full explanation ? such as delayed choice experiments, the brain's perception of time during saccadic masking, and more ? and suggests that these phenomena can only exist because they ultimately obey applicable mathematics, thereby agreeing with a modern view that the universe and everything within it, including the mind, are ultimately mathematical structures. It delves into how a number of conundrums, such as the weak Anthropic Principle, could be resolved, and how such resolutions could be tested experimentally. All its various threads converge towards a same new vision of the ultimate essence of time, seen as a side effect from a deeper reality.

Fifth Size Strain Conference. Diffraction Analysis of the Microstructure of Materials

Authors:
Book Series: Zeitschrift für Kristallographie / Supplemente ISSN: 0930-486X ISBN: 9783486992564 Year: Volume: 27 Pages: xii, 305 DOI: 10.1524/9783486992564 Language: English
Publisher: De Gruyter
Subject: Geophysics and Geomagnetism --- Geography
Added to DOAB on : 2016-01-11 10:42:07
License:

Loading...
Export citation

Choose an application

Abstract

Zeitschrift für Kristallographie. Supplement Volume 27 presents the complete Proceedings of all contributions to the V Size Strain Conference in Garmisch-Partenkirchen 2007: Lattice Defects,Residual Stresses,Texture in Thin Films and at Surfaces,Line-Broadening Analysis and Line-Profile Fitting,Diffraction/Microstructure Modeling. Supplement Series of Zeitschrift für Kristallographie publishes Proceedings and Abstracts of international conferences on the interdisciplinary field of crystallography.

Keywords

Geophysics

Authors:
ISBN: 9781789230208 9781789230215 Year: Pages: 160 DOI: 10.5772/68004 Language: English
Publisher: IntechOpen
Subject: Geophysics and Geomagnetism --- Geology --- Earth Sciences
Added to DOAB on : 2019-10-03 07:51:51

Loading...
Export citation

Choose an application

Abstract

This book is focused on different aspects of geophysical research, particularly on modern approach in subsurface imaging, tectonics, geohazard, seismicity, and Earth planetary system. Syntheses of results from regional and local studies combined with new techniques of geophysical data acquisition and interpretation from diverse geological provinces are presented. Some of the chapter explained clearly the geophysical technic that can image local sources in urban and rural settings in Israel. An example of studies on basement tectonics and fault reactivation in North America using integrated geophysical methods is also presented. Two modes of seismicity, one involving rotational seismology and another based on seismic response in Mexico using Hilbert-Huang transform (HHT) as an alternative technique for extracting data that will be useful for the assessment of potential earthquake, are discussed in other sets of chapters. The integration of geoelectric methods in another chapter demonstrated delimitation of the resistivity anomalies caused by different types of hydrocarbon contaminants and rocks in rural, industrial, and urban sites. The results of electrical resistivity method to define 1D and 2D electrical models from two datasets acquired in dry and rainy seasons in Panama (Central America) were used to show the relationship between electrical resistivity and volumetric water content. Petrophysical analyses show good fits between resistivity and volumetric water content and known parameters for rocks and soils. The study on Earth planetary system noted that at all stages of the Earth?s formation, convective heat and mass transfer are the most important factors in the dynamics of the planet. The chapter on magnetics shows how remanent magnetization and self-demagnetization complicate the inversion and interpretation of magnetic anomaly with examples from iron deposit in South Australia.

Hydraulic Conductivity - Issues, Determination and Applications

Authors:
ISBN: 9789533072883 Year: Pages: 448 DOI: 10.5772/744 Language: English
Publisher: IntechOpen
Subject: Geophysics and Geomagnetism --- Physics (General)
Added to DOAB on : 2019-10-03 07:51:48

Loading...
Export citation

Choose an application

Abstract

There are several books on broad aspects of hydrogeology, groundwater hydrology and geohydrology, which do not discuss in detail on the intrigues of hydraulic conductivity elaborately. However, this book on Hydraulic Conductivity presents comprehensive reviews of new measurements and numerical techniques for estimating hydraulic conductivity. This is achieved by the chapters written by various experts in this field of research into a number of clustered themes covering different aspects of hydraulic conductivity. The sections in the book are: Hydraulic conductivity and its importance, Hydraulic conductivity and plant systems, Determination by mathematical and laboratory methods, Determination by field techniques and Modelling and hydraulic conductivity. Each of these sections of the book includes chapters highlighting the salient aspects and most of these chapters explain the facts with the help of some case studies. Thus this book has a good mix of chapters dealing with various and vital aspects of hydraulic conductivity from various authors of different countries.

Microwave and Radio-Frequency Technologies in Agriculture. An Introduction for Agriculturalists and Engineers

Authors: --- ---
ISBN: 9783110455403 9783110455472 Year: Pages: 369 DOI: 10.1515/9783110455403 Language: English
Publisher: De Gruyter
Subject: Geophysics and Geomagnetism --- Geography --- Social Sciences --- Geology --- Earth Sciences --- Environmental Sciences
Added to DOAB on : 2016-01-06 17:02:28
License:

Loading...
Export citation

Choose an application

Abstract

Humanity’s ability to produce enough food is mostly due to adoption of new methods and technologies by the agricultural industries as they became available. New information, communication and high speed processing and precision agriculture technologies have the potential to transform the agricultural industry. These technologies incorporate radio-frequency and microwave radiation into their systems. This book presents an overview of how these technologies are being used in agricultural systems. The main purpose of the book is to provide a glimpse of what is possible and encourage practitioners in the engineering and agricultural industries to explore how radio-frequency and microwave systems might further enhance the agricultural industry. The authors have extensive experience in agricultural and microwave engineering, instrumentation and communication systems.

Ninth European Powder Diffraction Conference – Prague, September 2-5, 2004

Authors:
Book Series: Zeitschrift für Kristallographie / Supplemente ISSN: 0930-486X ISBN: 9783486992526 Year: Volume: 23 Pages: xxxvi, 618 DOI: 10.1524/9783486992526 Language: English
Publisher: De Gruyter
Subject: Geophysics and Geomagnetism
Added to DOAB on : 2016-01-11 12:29:27
License:

Loading...
Export citation

Choose an application

Abstract

Zeitschrift für Kristallographie. Supplement Volume 23 presents the complete Proceedings of all contributions to the IX European Powder Diffraction Conference in Prague 2004: Method Development and Application, Instrumental, Software Development, Materials Supplement Series of Zeitschrift für Kristallographie publishes Proceedings and Abstracts of international conferences on the interdisciplinary field of crystallography.

Keywords

Redefining Standard Model Cosmology

Authors:
ISBN: 9781838808631 9781838808648 9781838808655 Year: Pages: 122 DOI: 10.5772/intechopen.75275 Language: English
Publisher: IntechOpen
Subject: Geophysics and Geomagnetism
Added to DOAB on : 2019-10-03 07:51:53

Loading...
Export citation

Choose an application

Abstract

The current standard model of cosmology is based primarily on two incompatible theoretical models: (1) the standard model of particle physics, which describes the physics of the very small in terms of quantum mechanics, and (2) the general theory of relativity, which describes the physics of the very large in terms of classical physics. Both these theoretical models are considered to be incomplete in the sense that they do not provide any understanding of several empirical observations, such as the Big Bang, dark matter, dark energy, gravity, and matter-antimatter asymmetry in the universe. The main aim of this book is to discuss these serious problems that threaten to undermine the current standard model of cosmology.

Listing 1 - 10 of 13 << page
of 2
>>