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Thursday, August 6, 2020 | History

2 edition of mechanical properties of sea ice found in the catalog.

mechanical properties of sea ice

W. F. Weeks

mechanical properties of sea ice

by W. F. Weeks

  • 217 Want to read
  • 22 Currently reading

Published by U.S. Army Materiel Command Cold Regions Research & Engineering Laboratory in Hanover, N.H .
Written in English

    Subjects:
  • Sea ice.

  • Edition Notes

    Other titlesCold regions science and engineering.
    Statementby W. Weeks and A. Assur.
    SeriesMonograph - Cold Regions Research & Engineering Laboratory -- II-C3
    ContributionsAssur, Andrew,
    The Physical Object
    Paginationxiv, 80 p. :
    Number of Pages80
    ID Numbers
    Open LibraryOL22440333M

    This paper describes field and laboratory measurements of the evolving physical and mechanical properties of first-year sea ice through a growth season. The .   The motivation of this paper is to present the mechanical properties of Arctic summer sea ice under an environment of rapidly changing Arctic conditions. Because the data are potentially useful for Arctic navigation, a parameterization is needed that will relate the uniaxial compressive strength of Arctic sea ice to strain rate and porosity.

    Closure to “Mechanical Properties of First‐Year Sea Ice at Tarsiut Island” by Denis Blanchet, Razek Abdelnour, and George Comfort Discussion of “Mechanical Properties of First‐Year Sea Ice at Tarsiut Island” by Jacqueline A. Richter‐Menge and Erland M. Schulson. Additional Physical Format: Online version: Morey, Rexford M. Electromagnetic properties of sea ice. [Hanover, N.H.]: US Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, [].

    The group working with ice mechanics and offshore engineering performs field, laboratory and theoretical investigations of thermo-mechanical properties of ice and ice actions on offshore and coastal structures. Fieldwork is focused on in-situ tests on ice strength performed on land fast ice, drift ice and ice ridges, monitoring of ice and icebergs drift characteristics using ice . Sea Ice Microstructure and Properties. Studies of Microstructural Features and Brine Drainage Networks in First-Year Sea Ice The objective of this 3-year program is to address gaps in knowledge of the development and evolution of some important macro- and microstructural features of first year sea ice by repeated measurements through the annual cycle from .


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Mechanical properties of sea ice by W. F. Weeks Download PDF EPUB FB2

The mechanical properties of sea ice [Weeks, W. F] on *FREE* shipping on qualifying offers. The mechanical properties of sea ice. Emphasis is placed on (1) the physical basis for interpreting sea ice strength (phase relations, air volume, and structural considerations), (2) theoretical considerations (strength models, air bubbles and salt reinforcement, and interrelations between growth conditions and strength), (3) experimental results (tensile, flexural, shear, and compressive strength, elastic modulus, shear modulus.

Section C: Physics and Mechanics of Ice THE MECHANICAL PROPERTIES OF SEA ICE by W. Weeks and A. Assur SEPTEMBER U.S. ARMY MATERIEL COMMAND COLD REGIONS RESEARCH & ENGINEERING LABORATORY HANOVER, NEW HAMPSHIRE DA Project 1VOA Or ''t'liti^n of this document is unlimitedCited by: Model ice is usually treated as a homogeneous material (ITTC, ).

The mechanical properties of sea ice also vary from top to bottom of an ice sheet, in line with the temperature gradient through. The subsequent chapters describe the properties, structure, freezing, and composition of sea ice and ice drift. These topics are followed by discussions on the crystallographic features, and mechanical, thermal, and electrical properties of ice.

The concluding chapter examines the factor influencing ice growth and decay. This review deals with properties of sea ice that are relevant to mechanical behavior on a fairly small scale.

The main concern is with polycrystalline ice that is more or less intact. This sets the lower limit of scale not far below m, and the upper limit around 10 m. The mechanical properties of S2- and S3-type sea ice are reviewed.

Strength and, in some cases, elastic moduli are presented for short-term loadings. The loadings considered are uniaxial tension and compression and multiaxial compression; annular tests as well as flexural mechanical properties of sea ice book shear tests were also reported.

The characteristic properties of sea ice and its role in the environment are governed by the crystal lattice structure of ice Ih, in particular its resistance to incorporate sea salt ions. Depending on pressure and temperature, water ice can appear in more than a dozen different modifi cations.

Emphasis is on ice forces on structures, as the subject relates to development of oil and gas resources in the southern Beaufort Sea.

The main topics discussed here are mechanical properties, ice–structure interaction, modeling of sea ice drift, and oil industry research activities.

The mechanical properties of a single crystal can be described as a deck of cards with bad glue between the cards. It is simple to shear the deck but it can take high compressive load. For ice with many crystals (polycrystalline ice) the mechanical behaviour can be deduced from single crystal orientation.

Aging processes in sea ice. Sea Ice mechanics Test techniques for determining mechanical properties of ice Elastic properties Modeling Elasticity of PolycrystallineSea Ice Rheology Tensile and compressive strength Modeling aspects of ice strength.

Remote Sensing of Sea Ice with Snow Cover Electromagnetic. Data are presented on the strength, failure strain and modulus of multi-year sea ice under different loading conditions.

The effects of ice temperature. The physical properties (microstructure, thickness, salinity, porosity, and density) and the mechanical properties (tensile, flexural, shear, uni-axial compression and multi-axial compression strength, borehole strength, failure envelope, creep, elastic and strain modulus, Poisson's ratio, fracture toughness and friction) are explored.

Mechanical properties of multi-year sea ice. [Hanover, N.H.]: US Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, [] (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors /.

Mechanical properties of multi-year sea ice. [Hanover, N.H.]: US Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, [] (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: G F N Cox; Cold Regions Research and Engineering Laboratory (U.S.).

The cryosphere, which encompasses all frozen water on Earth, consists of snow, ice (including lake and river ice, sea ice, glaciers, and ice sheets), and permafrost (including seasonally frozen ground).

The physical, mechanical, and thermal properties of snow, ice, and permafrost control the dynamics of associated cryospheric hazards. Despite the importance of the salinity profile in determining the mechanical, thermal, and electromagnetic properties of sea ice, few ice salinity data have been collected.

Those data which are available have usually been obtained as an adjunct to some other study and have therefore not been systematically analyzed in their own right. Over the past 20 years the study of the frozen Arctic and Southern Oceans and sub-arctic seas has progressed at a remarkable pace.

This third edition of Sea Ice gives insight into the very latest understanding of the how sea ice is formed, how we measure (and model) its extent, the biology that lives within and associated with sea ice and the effect of climate change on its.

Mathematical relationships representing the variation of these mechanical properties with temperature; salinity; strain and stress rates; and crystal structure (depth) are analyzed. Uniaxial unconfined compressive strength data of horizontal sea ice samples are compared with triaxially confined borehole jack strength data.

The mechanical properties of methane hydrate are important to the stability of borehole and methane extraction from a methane hydrate reservoir. In this study, a series of triaxial compression tests were carried out on laboratory-formed methane hydrate-ice mixtures with various methane hydrate contents.

Axial loading was conducted at an axial strain rate of. Get this from a library! Mechanical properties of multi-year sea ice. Phase II, Ice structure analysis.

[Jacqueline A Richter-Menge; Nancy M Perron; Cold Regions Research and Engineering Laboratory (U.S.); Shell Development Company.; United States. Minerals Management Service.].mechanical properties of sea ice was given by Lainey and Tinawi [], while the most recent data in the literature has been evaluated for this presentation.

A comprehensive review of the behavior of sea ice at various scales was presented by Dempsey []. 2. Sea Ice Formation and Physical Characteristics.CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The flexural strength of sea ice in situ was measured by a cantilever method.

The measurement was carried out every February from The thickness of ice was 23~30 cm. The width of the beam was 30~40 cm. The length was ~2 m. The surface temperature of the beam was ~rc, the .