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Monday, July 13, 2020 | History

2 edition of Yellowknife seismological array. found in the catalog.

Yellowknife seismological array.

Geological Survey of Canada.

Yellowknife seismological array.

by Geological Survey of Canada.

  • 314 Want to read
  • 17 Currently reading

Published by Geological Survey of Canada in [Ottawa] .
Written in English

    Subjects:
  • Seismology -- Research -- Northwest Territories.,
  • Underground nuclear explosions -- Detection,
  • Arms control -- Verification

  • Edition Notes

    Other titlesL"Ensemble sismologique de Yellowknife.
    ContributionsCanada. Dept. of External Affairs., Canada. Arms Control and Disarmament Division., Canada. Energy, Mines and Resources Canada.
    Classifications
    LC ClassificationsQE535.2.C3 Y46 1989
    The Physical Object
    Pagination[14], [14] p. :
    Number of Pages14
    ID Numbers
    Open LibraryOL15399507M
    ISBN 100662568672

    A seismic array is a system of linked seismometers arranged in a regular geometric pattern (cross, circle, rectangular etc.) to increase sensitivity to earthquake and explosion detection. A seismic array differs from a local network of seismic stations mainly by the techniques used for data analysis. The data from a seismic array is obtained using special digital signal processing techniques. Administration File anomaly Archives of Canada Arctic array Bouguer anomaly breccia British Columbia Bulletin C.S. Beals Canada Canadian Journal Canadian Shield centre Committee Contributions crater crust crustal depth developed diameter distance Dominion Astrophysical Observatory Dominion Observatory Dominion Observatory Administration.

    Abstract. The arrival at the Yellowknife Array (YKA) of closely-spaced P-waves having slightly different values ofdT/dΔ, azimuth, and amplitude has been simulated using synthetic 1 Hz ve-processing determinations of apparent slowness and azimuth show a remarkable pattern of fluctuations with time for varying separations of the interfering pulses. Slowness (dT/d∆) and azimuth measurements for P and pP phases have been derived for 57 earthquakes at distances between 82° and ° recorded at the Yellowknife array to determine whether such data are capable of elucidating the structure of the lowest km of the mantle. To show that systematic errors in the azimuths of arrival and slight differences in dT/d∆ values from those.

      Data, Results, and Discussion. We found that this doublet also was well recorded on the short-period Yellowknife seismograph array (YK) in northern Canada, which is located in an optimal position for the study of mantle phases PP as well as both refracted (PKIKP) and postcritically reflected (PKiKP) core , these phases are emitted near the maximum in the lobe of the doublet's. Your Local Home Audio, Video, and Automation Experts For Over 35 Years! We're open for curbside delivery and storefront pickup!


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Yellowknife seismological array by Geological Survey of Canada. Download PDF EPUB FB2

Operation and maintenance of the Yellowknife seismological array, [E. Cooper, W. D., Manchee] on *FREE* shipping on qualifying : Manchee, E. Cooper, W. Yellowknife seismological array: a Canadian contibution to the verification of compliance Yellowknife seismological array.

book a nuclear test ban treaty. The Array; Introduction. The seismological array located near Yellowknife in the Northwest Territories was established inin cooperative agreement between the Department of Mines and Technical Surveys (now Natural Resources Canada) and the United Kingdom Atomic Energy Authority (UKAEA), to investigate the feasibility of teleseismic detection and identification of nuclear explosions using multiple seismometers in distributed arrays.

Get this from a library. Operation and maintenance of the Yellowknife seismological array, [E B Manchee; W D Cooper]. Buy The Yellowknife seismological array (Publications of the Dominion Observatory, Ottawa) by E. B Manchee (ISBN:) from Amazon's Book Store.

Everyday low prices and free delivery on eligible : E. B Manchee. History of the Yellowknife Seismological Array The first series of negotiations in Yellowknife seismological array.

book on a comprehensive ban on nuclear explosion testing among the then nuclear weapon states (U.S.S.R., U.K., and U.S.A.) began in the late s. Seismologists from a. Buy Operation and maintenance of the Yellowknife seismological array, (Seismological series of the Dominion Observatory) by E.

B Manchee (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : E. B Manchee. The Yellowknife Seismic Array (YKA) was commissioned in by the United Kingdom Atomic Energy Association in cooperation with the Canadian Defense Research Board and Dept.

of Mines and Technical Surveys (now Natural Resources Canada) as one of four experimental seismological arrays built to investigate the capabilities of such sensor arrays to detect and characterise underground.

Mini Arrays [] The first seismological arrays built in the late s and the early s were very small circular arrays with apertures of just a few kilometers (e.g., Blue Mountain array, Uinto Basin array, Tonto Forest array, and Cumberland Plateau array [Romney, ]) built within the Vela Uniform Program (United States).

The. When Willmore () published his Manual of Seismological Observatory Practice, only a small number of seismic arrays were in operation. The whole section on array seismology in that issue of the.

Arrival times, slownesses and azimuths for coherent signals arriving between P and 60 secafter PP have been measured for 12 earthquakes recorded at the Yellowknife array at distances between 90° and °.

The slowness (dT/dΔ) and azimuth values for P indicate that corrections to dT/dΔ for local structure beneath the array are small and can be neglected. Buy Correlogram discrimination parameters from Yellowknife seismic array data (Ottawa. Dominion Observatory. Seismological series) on FREE SHIPPING on qualified orders.

The Earth Physics Branch of the Department of Energy, Mines and Resources operates a variety of seismological installations throughout Canada including nineteen Standard and fourteen Regional Stations. At Yellowknife there is an element short-period medium-aperture array with on-site processing which produces a daily detection bulletin.

Authors: Somers, H; Manchee, E B Publication Date: Sat Jan 01 EST Research Org.: Dominion Observatory, Ottawa Sponsoring Org.: USDOE OSTI Identifier. Overview of the National Earthquake Database.

The National Earthquake DataBase (NEDB) comprises a number of separate databases that together act as the national repository for all raw seismograph data, measurements, and derived parameters arising from the Canadian National Seismograph Network (CNSN), the Yellowknife Seismological Array (YKA), previous regional telemetered networks in.

[8] Most array methods assume a plane wave arriving at the array. This is a good approximation for wave fronts from teleseismic events but is a restriction for the study of near-receiver structures. The propagation direc-tion of elastic waves traveling in a spherical Earth and arriving at a seismological array can be described by two.

For 30 years, the array station at Yellowknife, Northwest Territories, has demonstrated some of the best capabilities in the world for detecting seismological events and, through Canadian research programmes, has contributed significantly to the development of seismological verification techniques.

search input Search input auto suggest. search filter. The Earth Physics Branch of the Department of Energy, Mines and Resources operates a variety of seismological installations throughout Canada including nineteen Standard and fourteen Regional Stations.

At Yellowknife there is an element short-period medium-aperture array with on-site processing which produces a daily detection bulletin.

At Ottawa and Victoria, regional telemetered. YKA Yellowknife Array Beam Reference Point Network: OTTR Status: Open Northwest Territories, Canada opened Also sent to NEIS by BKN. ykaney (Local code. See International code JYK.) YKB0 Yellowknife Array Site B0 Network: OTTR. The Yellowknife Seismological Array; Publications of the Dominion Observatory, v.p.

69– Burch, R., An Examination of Cluster Recordings from EKA and YKA Relative to a Single Seismometer; Atomic Weapons Establishment Blacknest Note AG/84, 11 p.

The fine scale structure of the core mantle boundary (CMB) region beneath southern Alaska is studied using core reflected P-waves (PcP) recorded at the Canadian Yellowknife c studies of the lowermost mantle have detected a multitude of structures at this contact zone between iron alloy liquid of the core and the silicates of the mantle.Seismological arrays and networks can be used to increase the signal-to-noise ratio of seismic arrivals.

By stacking seismic traces that are recorded at an array, the coherent part of the seismic wave field can be enhanced while suppressing incoherent noise. One array processing method often used is .