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Author: Albert W. Biggs
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Book Description
This presentation considers volume scattering from Arctic sea ice and Cascade Mountain snow fields. Physical properties of sea ice and dielectric properties of glacier snow are described in terms of dielectric mixtures and the relaxation spectra of water at microwave frequencies. The VLF spectrum is included to illustrate analogous relaxation for ice. Scattering models are brine pockets in sea ice and ice spheroids in snow fields. Radar backscatter measurements of sea ice and SLAR images of snow fields are interpreted with these models. Simulation of sea ice in an acoustic tank demonstrates volume and surface scattering with good qualitative results. The dielectric relaxation phenomena in water at microwave frequencies is also interpreted as a mechanism for anomalous behavior.
Author: Albert W. Biggs
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Book Description
This presentation considers volume scattering from Arctic sea ice and Cascade Mountain snow fields. Physical properties of sea ice and dielectric properties of glacier snow are described in terms of dielectric mixtures and the relaxation spectra of water at microwave frequencies. The VLF spectrum is included to illustrate analogous relaxation for ice. Scattering models are brine pockets in sea ice and ice spheroids in snow fields. Radar backscatter measurements of sea ice and SLAR images of snow fields are interpreted with these models. Simulation of sea ice in an acoustic tank demonstrates volume and surface scattering with good qualitative results. The dielectric relaxation phenomena in water at microwave frequencies is also interpreted as a mechanism for anomalous behavior.
Author: Irena Hajnsek
Publisher: Springer Nature
ISBN: 3030565041
Category : Technology & Engineering
Languages : en
Pages : 304
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Book Description
This open access book focuses on the practical application of electromagnetic polarimetry principles in Earth remote sensing with an educational purpose. In the last decade, the operations from fully polarimetric synthetic aperture radar such as the Japanese ALOS/PalSAR, the Canadian Radarsat-2 and the German TerraSAR-X and their easy data access for scientific use have developed further the research and data applications at L,C and X band. As a consequence, the wider distribution of polarimetric data sets across the remote sensing community boosted activity and development in polarimetric SAR applications, also in view of future missions. Numerous experiments with real data from spaceborne platforms are shown, with the aim of giving an up-to-date and complete treatment of the unique benefits of fully polarimetric synthetic aperture radar data in five different domains: forest, agriculture, cryosphere, urban and oceans.
Author: Samuel C. Colbeck
Publisher:
ISBN:
Category : Glaciers
Languages : en
Pages : 144
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Book Description
Author: Mohammed Shokr
Publisher: John Wiley & Sons
ISBN: 1119027888
Category : Science
Languages : en
Pages : 600
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Book Description
Sea Ice: Physics and Remote Sensing addresses experiences acquired mainly in Canada by researchers in the fields of ice physics and growth history in relation to its polycrystalline structure as well as ice parameters retrieval from remote sensing observations. The volume describes processes operating at the macro- and microscale (e.g., brine entrapment in sea ice, crystallographic texture of ice types, brine drainage mechanisms, etc.). The information is supported by high-quality photographs of ice thin-sections prepared from cores of different ice types, all obtained by leading experts during field experiments in the 1970s through the 1990s, using photographic cameras and scanning microscopy. In addition, this volume presents techniques to retrieve a suite of sea ice parameters (e.g. ice type, concentration, extent, thickness, surface temperature, surface deformation, etc.) from space-borne and airborne sensor data. The breadth of the material on this subject is designed to appeal to researchers and users of remote sensing data who want to develop quick familiarity with the capabilities of this technology or detailed knowledge about major techniques for retrieval of key ice parameters. Volume highlights include: Detailed crystallographic classification of natural sea ice, the key information from which information about ice growth conditions can be inferred. Many examples are presented with material to support qualitative and quantitative interpretation of the data. Methods developed for revealing microstructural characteristics of sea ice and performing forensic investigations. Data sets on radiative properties and satellite observations of sea ice, its snow cover, and surrounding open water. Methods of retrieval of ice surface features and geophysical parameters from remote sensing observations with a focus on critical issues such as the suitability of different sensors for different tasks and data synergism. Sea Ice: Physics and Remote Sensing is intended for a variety of sea ice audiences interested in different aspects of ice related to physics, geophysics, remote sensing, operational monitoring, mechanics, and cryospheric sciences.
Author: Vijay P. Singh
Publisher: Springer Science & Business Media
ISBN: 904812641X
Category : Science
Languages : en
Pages : 1301
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Book Description
The earth’s cryosphere, which includes snow, glaciers, ice caps, ice sheets, ice shelves, sea ice, river and lake ice, and permafrost, contains about 75% of the earth’s fresh water. It exists at almost all latitudes, from the tropics to the poles, and plays a vital role in controlling the global climate system. It also provides direct visible evidence of the effect of climate change, and, therefore, requires proper understanding of its complex dynamics. This encyclopedia mainly focuses on the various aspects of snow, ice and glaciers, but also covers other cryospheric branches, and provides up-to-date information and basic concepts on relevant topics. It includes alphabetically arranged and professionally written, comprehensive and authoritative academic articles by well-known international experts in individual fields. The encyclopedia contains a broad spectrum of topics, ranging from the atmospheric processes responsible for snow formation; transformation of snow to ice and changes in their properties; classification of ice and glaciers and their worldwide distribution; glaciation and ice ages; glacier dynamics; glacier surface and subsurface characteristics; geomorphic processes and landscape formation; hydrology and sedimentary systems; permafrost degradation; hazards caused by cryospheric changes; and trends of glacier retreat on the global scale along with the impact of climate change. This book can serve as a source of reference at the undergraduate and graduate level and help to better understand snow, ice and glaciers. It will also be an indispensable tool containing specialized literature for geologists, geographers, climatologists, hydrologists, and water resources engineers; as well as for those who are engaged in the practice of agricultural and civil engineering, earth sciences, environmental sciences and engineering, ecosystem management, and other relevant subjects.
Author: United States. Congress. House. Committee on Appropriations
Publisher:
ISBN:
Category :
Languages : en
Pages : 2026
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Book Description
Author: Simon Haykin
Publisher: John Wiley & Sons
ISBN: 9780471554943
Category : Technology & Engineering
Languages : en
Pages : 724
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Book Description
Describes the latest remote sensing technologies used to detect ice hazards in the marine environment; map surface currents, sea-state and surface winds; study ice dynamics, over ice transportation, oil spill countermeasures, climate changes and ice reconnaisance. Includes such technologies as acoustic sensing, ice-thickness measurement, passive microwave remote sensing, ground wave and surface-based radars.
Author: United States. Congress. House. Committee on Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1096
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Book Description
Author: United States. Congress. House. Committee on Appropriations
Publisher:
ISBN:
Category : Finance, Public
Languages : en
Pages : 1886
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Book Description
Author: United States. Congress. House. Appropriations
Publisher:
ISBN:
Category :
Languages : en
Pages : 1886
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Book Description
