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Monday, May 4, 2020 | History

2 edition of Canadian Beaufort Sea 1984 repetitive mapping of ice scour found in the catalog.

Canadian Beaufort Sea 1984 repetitive mapping of ice scour

Environmental Studies Revolving Funds (Canada)

Canadian Beaufort Sea 1984 repetitive mapping of ice scour

by Environmental Studies Revolving Funds (Canada)

  • 211 Want to read
  • 5 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

StatementJ. Shearer, B. Laroche, G. Fortin ; scientific advisor, A. Stirbys.
SeriesEnvironmental Studies Research Funds (Canada). Report -- 032
ContributionsShearer, J., Laroche, B., Fortin, G.
The Physical Object
Paginationxii, 28 p. :
Number of Pages28
ID Numbers
Open LibraryOL21669867M
ISBN 100920783317

AN INTEGRATED SEA ICE PROJECT FOR BREA (U OF M): DETECTION, MOTION AND RADARSAT MAPPING OF EXTREME ICE FEATURES IN THE SOUTHERN BEAUFORT SEA FIELD DATA REPORT, APRIL Authors and Field Participants: Klaus Hochheim1, Greg McCullough1, Dave Babb1, Anna Crawford2, with the Canadian Ice Service (CIS). This data was used to plan field. Under the guidance of a new captain and crew, the Amundsen headed north into the Beaufort Sea to conduct ice sampling of multiyear ice flows from ºN latitude. We collected mapping data along the way and assisted with ice operations when the ship was moored to an ice flow.

This paper explores how ‘ice’ is woven into the spaces and practices of the state in Norway and Canada and, specifically, how representations of the sea ice edge become political agents in that process. We focus in particular on how these states have used science to ‘map’ sea ice – both graphically and legally – over the past by: Ice scouring as a geologic agent: Pleistocene examples from Scarborough Bluffs and a numerical model David Jason Eden Degree of Master of Science, Graduate Department of Ceology, University of Toronto In southem Ontario, extensive outcrops of glaciolacustrine muds and shoreface sands of Late Pleistocene age are exposed near Toronto, and were deformed by floating ice masses in an.

The potential predictive power of the forecasts increases as predictions are made closer to the September minimum sea ice extent, with the most precise predictions made during July. This research confirms previous studies and provides a useful compilation of the state of the knowledge on the drivers of sea ice changes in the Beaufort : Laura Marie Quirk. Weekly bore holes or hotwire thickness guage were used to mesure the thickness of specific locations on fast ice. This data collection contains ice thickness and snow depth measurements for sites going back as far as for the first stations established in the Canadian Arctic (Eureka and Resolute). Record length varies from station to station.


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Canadian Beaufort Sea 1984 repetitive mapping of ice scour by Environmental Studies Revolving Funds (Canada) Download PDF EPUB FB2

Get this from a library. Canadian Beaufort Sea repetitive mapping of ice scour. [Jim Shearer; Guy Fortin; Bernard Laroche; A Stirbys; Environmental Studies Revolving Funds (Canada)] -- During the summer ofan extensive survey of ice scour was carried out over much of the Canadian Beaufort continental shelf.

The survey used side-scan sonar and precision echo-sounding equipment. Read - Canadian Beaufort Canadian Beaufort Sea 1984 repetitive mapping of ice scour book repetitive mapping of ice scour: Shearer, Jim - desLibris.

Canadian Beaufort Sea repetitive mapping of ice scour SUPO $ / user X $ Add to cart. Share this book × Copy link. Seabed gouging by ice is a process that occurs when floating ice features (typically icebergs and sea ice ridges) drift into shallower areas and their keel comes into contact with the seabed.

As they keep drifting, they produce long, narrow furrows most often called gouges, or scours. This phenomenon is common in offshore environments where ice is known to exist. About ice scours were observed and analyzed over a distance of approximately km on the inner shelf of the southeastern Canadian Beaufort Sea.

Ice scours were divided into two types based on their morphology: multiple scours consisting of a series of parallel scours and ridges, and single by: About ice scours were observed and analyzed over a distance of approximately km on the inner shelf of the southeastern Canadian Beaufort Sea.

Ice scours were divided into two types based. Subsea pipelines are considered a means of bringing Beaufort Sea oil and gas resources to shore.

One of the most significant challenges facing these structures is gouging of the seabed by ice keels ().To protect the pipelines against this ice, the method of choice is to bury them to a safe but cost effective depth below the seabed (Barrette,King,Liferov et al.,Paulin et al Author: David McGonigal, Paul D.

Barrette. Ground ice, which forms a significant volumetric component of the near-surface soils, occurs as pore ice, wedge ice, pingo ice and as massive bodies of segregated ice of various ages.

Geotechnical problems in onshore areas include thaw settlement due to degradation of ground ice, creep of Author: P. Kurfurst, S. Dallimore. layering in the Canadian Beaufort Sea H.A. MACAULAY AND J.A. HUNTER Geological Survey of Canada, Booth St., Ottawa, Ontario, Canada KIA 0E8 The recent application of high-resolution, multi-channel, seismic reflection techniques in the Cana- dian Beaufort Sea has yielded better sources of data for refraction interpretation of ice-bonded sub.

The number of Quaternary ice advances across the Canadian Beaufort Sea margin varies markedly between the Mackenzie Trough (two) and the Amundsen Gulf Trough (at least nine).

The Mackenzie Trough was probably occupied by an ice stream during the Late Wisconsinan and either the Illinoian or Early Wisconsinan : Christine Louise Batchelor. The sea-ice cover of the Arctic Ocean is decreasing in areal extent and volume more rapidly than model predictions of its response to continued warming of earth’s lower atmosphere.

Reflecting this decrease is the spatial and temporal widening of the circumpolar flaw lead, a zone of open water and unconsolidated ice along the coastlines of the shallow seas that surround the deep Arctic Cited by: 3.

Polar Bears in the Southern Beaufort Sea I: Survival and Breeding in Relation to Sea Ice Conditions, By Eric V.

Regehr, Christine M. Hunter, Hal Caswell, Steven C. Amstrup, and Ian Stirling Abstract Climatic warming and associated declines in Arctic sea ice have raised concerns about the long-term conservation of polar bears (UrsusFile Size: KB.

The Beaufort Sea sub-region is strongly impacted by sea-ice changes within the sub-region as well as in the Alaska Beaufort Sea and Arctic Ocean, including changes extending along the northwest.

Ice Draft and Ice Velocity Data in the Beaufort Sea, View Catalog Page Entry ID G Summary This data set provides measurement of sea ice draft (m) and the movement of sea ice (cm/s) over the continental shelf of the Eastern Beaufort Sea. The data set spans April to September The data set was acquired to assist inFile Size: KB.

Analysis and Design of Buried Pipelines for Ice Gouging Hazard: A Probabilistic Approach Arash Nobahar, Arash Nobahar. Fugro-McClelland Marine Geosciences, Inc., Houston, TX Beaufort Sea Ice Scour Repetitive Mapping Program,” Environmental Studies Research Funds, Report No Kenny, Eighteenth Canadian Geotechnical Cited by:   The Canadian Ice Service has a cool NASA animated video showing the Beaufort Gyre in action – you can actually see the solid mass of ice crack and swirl west and north under the pressure of the massive corkscrew current – see original here (tips on getting yourself oriented in the video below the screencap) and view below, for Apri 4- May 3, Beaufort Sea - Minimum Ice Coverage.

Season Week Total Concentration; *:   Abstract. Active acoustics as a tool to detect and avoid Arctic marine mammals was assessed in the Canadian Beaufort Sea. The target strengths and shape of the echoes of whales and seals were characterized using a bi-frequency (38 and kHz) split-beam scientific echosounder in winter / and a scientific scanning sonar (20–30 kHz) in summer Cited by: 3.

S hearer, J., L a R oche, B. and F ortin, G. Canadian Beaufort Sea Repetitive Mapping of Ice Scour, Environmental Studies Revolving Fund report No. [A] CAN/CSA S, General requirements, design criteria, the environment, and loads, Canadian Standards Association, A STUDY OF SEVERAL PRESSURE RIDGES AND ICE ISLANDS IN THE CANADIAN BEAUFORT SEA* By].

HNATJUK, (Gulf Oil Canada, Ltd., P.O. BoxCalgary, Alberta T2P 2H7, Canada) A. Kov ACS and M. M ELLOR (U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, New HampshireD.S.A.) ABSTRACT.

Figure 5. Ice thickness in the Arctic, the spring of Top to bottom: March 3, Ma April 2, April 30 ().That bit of black you see in the tongue of multiyear ice (red and yellow) curling towards the shoreline of the Eastern Beaufort/Yukon (around “W” on the maps) is ice that is 5 m thick!. “They can be well over 10 metres thick and are considered the most severe type of sea ice.” It was one of these, in the Beaufort Sea in Aprilthat exerted the greatest pressure ever measured against an offshore exploration rig, as slowly advancing pack ice drove it into the structure with pulverizing force.ice ride-up and beach scour, melt-out, or nearshore ground-ing and wallow (Forbes and Taylor, ).

Because of the impact of sea ice on beach morphology, we hypothesize that in regions of isostatic uplift and falling relative sea level (RSL), a postglacial record of sea-ice conditions may be preserved in raised-beach sequences (Fig.

1). Arctic Ice Regime Shipping System Pictorial Guide - TP (PDF file, 2, KB) Download time ( kbps): 10 minutes and 57 seconds ; Ice Navigation in Canadian Waters (PDF file, 4,KB) Download time ( kbps): 20 minutes and 27 seconds ; IMO Guidelines On Voyage Planning For Passenger Ships Operating In Remote Areas (PDF file, KB).