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Solar Physics

, Volume 152, Issue 2, pp 351–379 | Cite as

The global oscillation network group site survey

II.Results
  • Frank Hill
  • George Fischer
  • Suzanne Forgach
  • Jennifer Grier
  • John W. Leibacher
  • Harrison P. Jones
  • Patricia B. Jones
  • Renate Kupke
  • Robin T. Stebbins
  • Donald W. Clay
  • Robert E. L. Ingram
  • Kenneth G. Libbrecht
  • Harold Zirin
  • Roger K. Ulrichi
  • Lawrence Websteri
  • Lester S. Hieda
  • Barry J. Labonte
  • Wayne M. T. Lu
  • Edwin M. Sousa
  • Charles J. Garcia
  • Eric A. Yasukawa
  • John A. Kennewell
  • David G. Cole
  • Huang Zhen
  • Xiao Su-Min
  • Arvind Bhatnagar
  • Aashok Ambastha
  • Abdulrahman Sa'Ad Al-Khashlan
  • Muhammad-Saleh Abdul-Samad
  • Zouhair Benkhaldoun
  • Samir Kadiri
  • Francisco Sánchez
  • Pere L. Pallé
  • Oscar Duhalde
  • Hernan Solis
  • Oscar Saá
  • Ricardo González
Article

Abstract

The Global Oscillation Network Group (GONG) Project will place a network of instruments around the world to observe solar oscillations as continuously as possible for three years. The Project has now chosen the six network sites based on analysis of survey data from fifteen sites around the world. The chosen sites are: Big Bear Solar Observatory, California; Mauna Loa Solar Observatory, Hawaii; Learmonth Solar Observatory, Australia; Udaipur Solar Observatory, India; Observatorio del Teide, Tenerife; and Cerro Tololo Interamerican Observatory, Chile.

Total solar intensity at each site yields information on local cloud cover, extinction coefficient, and transparency fluctuations. In addition, the performance of 192 reasonable components analysis. An accompanying paper describes the analysis methods in detail; here we present the results of both the network and individual site analyses.

The selected network has a duty cycle of 93.3%, in good agreement with numerical simulations. The power spectrum of the network observing window shows a first diurnal sidelobe height of 3 × 10−4 with respect to the central component, an improvement of a factor of 1300 over a single site. The background level of the network spectrum is lower by a factor of 50 compared to a single-site spectrum.

Keywords

Power Spectrum Duty Cycle Cloud Cover Network Site Individual Site 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • Frank Hill
    • 1
  • George Fischer
    • 1
    • 2
  • Suzanne Forgach
    • 1
  • Jennifer Grier
    • 1
    • 3
  • John W. Leibacher
    • 1
  • Harrison P. Jones
    • 4
  • Patricia B. Jones
    • 5
  • Renate Kupke
    • 1
    • 6
  • Robin T. Stebbins
    • 7
  • Donald W. Clay
    • 8
  • Robert E. L. Ingram
    • 8
  • Kenneth G. Libbrecht
    • 9
  • Harold Zirin
    • 9
  • Roger K. Ulrichi
    • 10
  • Lawrence Websteri
    • 10
  • Lester S. Hieda
    • 6
  • Barry J. Labonte
    • 6
  • Wayne M. T. Lu
    • 6
  • Edwin M. Sousa
    • 6
  • Charles J. Garcia
    • 11
  • Eric A. Yasukawa
    • 11
  • John A. Kennewell
    • 12
  • David G. Cole
    • 12
  • Huang Zhen
    • 13
  • Xiao Su-Min
    • 13
  • Arvind Bhatnagar
    • 14
  • Aashok Ambastha
    • 14
  • Abdulrahman Sa'Ad Al-Khashlan
    • 15
  • Muhammad-Saleh Abdul-Samad
    • 15
  • Zouhair Benkhaldoun
    • 16
  • Samir Kadiri
    • 16
  • Francisco Sánchez
    • 17
  • Pere L. Pallé
    • 17
  • Oscar Duhalde
    • 18
  • Hernan Solis
    • 18
  • Oscar Saá
    • 19
  • Ricardo González
    • 19
  1. 1.National Solar ObservatoryNational Optical Astronomy ObservatoriesTucsonUSA
  2. 2.Mathematics DepartmentUniversity of UtahSalt Lake CityUSA
  3. 3.Lunar and Planetary LaboratoryUniversity of ArizonaTucsonUSA
  4. 4.NASA/GSFC, Southwest StationNOAOTucsonUSA
  5. 5.Center for Computing and Information TechnologyUniversity of ArizonaTucsonUSA
  6. 6.Institute for AstronomyUniversity of HawaiiHonoluluUSA
  7. 7.Joint Institute for Laboratory AstrophysicsUniversity of ColoradoBoulderUSA
  8. 8.Arizona Western CollegeYumaUSA
  9. 9.Big Bear Solar ObservatoryCalifornia Institute of TechnologyPasadenaUSA
  10. 10.Mt. Wilson ObservatoryUniversity of CaliforniaLos AngelesUSA
  11. 11.Mauna Loa Solar ObservatoryHigh Altitude ObservatoryBoulderUSA
  12. 12.Learmonth Solar ObservatoryIPS Radio and Space ServicesWest Chatswood, New South WalesAustralia
  13. 13.Urumqi Astronomical StationAcademia Sinica XinjiangUrumqiChina
  14. 14.Udaipur Solar ObservatoryPhysical Research LaboratoryUdaipurIndia
  15. 15.King Abdul Aziz City for Science and TechnologyRiyadhSaudi Arabia
  16. 16.Centre National de Coordination et de Planification de la Recherche Scientifique et TechniqueRabatMorocco
  17. 17.Observatorio del TeideInstituto Astrofisica de CanariasTenerifeSpain
  18. 18.Las Campanas ObservatoryThe Observatories of the Carnegie Institution of WashingtonPasadenaUSA
  19. 19.Cerro Tololo Interamerican ObservatoryNational Optical Astronomy ObservatoriesTucsonUSA

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