Arctic Oceanographic Measurements from Drifting Ice Islands PDF Download
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Author: Kenneth Leland Hunkins
Publisher:
ISBN:
Category : Drifting ice stations
Languages : en
Pages : 74
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Book Description
Author: Kenneth Leland Hunkins
Publisher:
ISBN:
Category : Drifting ice stations
Languages : en
Pages : 74
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Book Description
Author: Kenneth L. Hunkins
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
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Book Description
Investigations in hydroacoustics and marine geophysics were conducted from two drifting ice stations, T-3 and Arlis II, in the Arctic Ocean. Long range sound propagation experiments were made over a number of paths between ice stations and also with icebreakers. The signals from explosives are transmitted to great ranges in the Arctic surface SOFAR channel. The character of these signals is explained in principal by both ray and mode theory. Background noise is created by cracking and crushing of the ice cover. The sources and variability of the background noise are discussed. Geophysical investigations included navigation, ocean depth, gravity and magnetics. Marine geological investigations included bottom photography, nephelometry and coring. Improvement of accuracy of sea gravity measurements by consideration of the cross coupling and off leveling errors is discussed. The use of satellite navigation for increasing navigational accuracy and hence the accuracy of gravity measurements is described. (Author).
Author: Matti Leppäranta
Publisher: Springer Science & Business Media
ISBN: 3642046835
Category : Science
Languages : en
Pages : 370
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Book Description
The Second Edition of The Drift of Sea Ice presents the fundamental laws of sea ice drift which come from the material properties of sea ice and the basic laws of mechanics. The resulting system of equations is analysed for the general properties of sea ice drift, the free drift model and analytical models for ice drift in the presence of internal friction, and the construction of numerical ice drift models is detailed. This second edition of a much lauded work, unique on this topic in the English language, has been revised, updated and expanded with much new information and outlines recent results, in particular in relation to the climate problem, mathematical modelling and ice engineering applications. The current book presents the theory, observations, mathematical modelling techniques, and applications of sea ice drift science. The theory is presented from the beginning on a graduate student level, so that students and researchers coming from other fields such as physical oceanography, meteorology, physics, engineering, environmental sciences or geography can use the book as a source book or self-study material. First the drift ice material is presented ending with the concept of ‘ice state’ – the relevant properties in sea ice dynamics. Ice kinematics observations are widely presented with the mathematical analysis methods, and thereafter come drift ice rheology – to close the triangle material – kinematics – stress. The momentum equation of sea ice is derived in detail and its general properties are carefully analysed. Then follow two chapters on analytical models: free drift and drift in the presence of internal friction: These are very important tools in understanding the dynamical behaviour of sea ice. The last topical chapter is numerical models, which are the modern tool to solve ice dynamics problem in short term and long term problems. The closing chapter summarises sea ice dynamics applications and the need of sea ice dynamic knowledge and gives some final remarks on the future of this branch of science.
Author: Matti Leppäranta
Publisher: Springer Science & Business Media
ISBN: 3540269703
Category : Science
Languages : en
Pages : 282
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Book Description
This book presents the fundamental laws of sea ice drift, as derived from the material properties of sea ice, the basic laws of mechanics, and the latest modeling techniques. Topics covered include the science of sea ice drift, forecasting velocity based on volume, size and shape, sea ice ridging and remote sensing, modelling of ice conditions, and the role of sea ice drift in oceanography, marine ecology and engineering.
Author: Gerry H. Cabaniss
Publisher:
ISBN:
Category : Arctic Ocean
Languages : en
Pages : 344
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Book Description
Author: Luke Copland
Publisher: Springer
ISBN: 9402411011
Category : Science
Languages : en
Pages : 426
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Book Description
This book provides an overview of the current state of knowledge of Arctic ice shelves, ice islands and related features. Ice shelves are permanent areas of ice which float on the ocean surface while attached to the coast, and typically occur in very cold environments where perennial sea ice builds up to great thickness, and/or where glaciers flow off the land and are preserved on the ocean surface. These landscape features are relatively poorly studied in the Arctic, yet they are potentially highly sensitive indicators of climate change because they respond to changes in atmospheric, oceanic and glaciological conditions. Recent fracturing and breakup events of ice shelves in the Canadian High Arctic have attracted significant scientific and public attention, and produced large ice islands which may pose a risk to Arctic shipping and offshore infrastructure. Much has been published about Antarctic ice shelves, but to date there has not been a dedicated book about Arctic ice shelves or ice islands. This book fills that gap.
Author: Vivian Bushnell
Publisher:
ISBN:
Category : Arctic Ocean
Languages : en
Pages : 240
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 972
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Author: Arctic Institute of North America
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 494
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Book Description
Author:
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 1378
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Book Description
