ERRATA Notification
U.S. Antarctic Program - Conferences, Committees, & Workshops Section United States Antarctic Program United States Antarctic Program Logo National Science Foundation Logo
 

Subsequent to this workshop more accurate, updated information became available for Table 4 NSF Forecasts of Science Communication Requirements at South Pole Station FY 1999-2003 and Table 5 South Pole Scientist Communication Requirements. This information is now presented in this errata of the proceedings.

November 22, 1999


 

Table 4 Forecasts of Communication Requirements/Planned Capacity at South Pole Station FY 1999-2003

Fiscal Year Required Bandwidth Forecast (GB/day) Planned Capacity (GB/day) 1*
1999 8.0 6.2 2*
2000 11.0 22.6 3*
2001 14.0 22.6  
2002 17.0 22.6  
2003 22.0 22.6  

  1. Planned capacity represents an ideal, theoretical maximum value, based on satellite link transmission bandwidth and daily visibility of satellites.  Actual throughput achieved should be de-rated from values presented to allow for IP network protocol delays, network overhead, satellite signal fades, and other inefficiencies.  An empirical de-rating factor on the order of 0.85 should be applied to estimate actual throughput.
  2. FY99 planned capacity represents:
     

    Satellite   Rate (Kbps)
    LES-9   38.4
    GOES   128/256 *
    TDRS IP   1,024
    TDRS K   2,000

    * Service variable between 128 and 256 due to earth station limitations.

  3. FY2000-2003 planned capacity represents:

    Satellite   Rate (Kbps)  
    LES-9   38.4  
    GOES   256/512 (512 uplink from Pole after 2/1/00)
    TDRS IP   1,024  
    TDRS K   2,000 (until 2/1/00)
        7,500 (2/1/00 on)
    MARISAT   1,544 (after 2/1/01)

Table 5 South Pole Scientist Communication Requirements

Project Current Bandwidth
Required (FY2000)
Forecasted Bandwidth Required
IRIS Seismic Station 25 MB/d 48 MB/d (high resolution; real-time continuous transmission)
Deep Ice STC 25 Station Seismic Array (proposed)1   500 MB/d
AMANDA II Neutrino Detector 5.0 GB/d  
AMANDA ICECUBE (proposed 1 km3 Neutrino Detector)   20-30 GB/d (2005-2007)
NOAA 14.3 MB/d
(100 MB/wk)
14.3 MB/d (100 MB/wk)
AST/RO 30 MB/d 200-300 MB/d (10 meter Telescope) (After January 2002)
CARA IR Telescope - SPIREX 3 GB/d  
CARA IR Telescope - 2.5 meter (proposed)   2-3 GB/d (After January 2002)
CARA CMBR Telescope - VIPER 800 MB/d (1999-2000) and telephone calls every 3 days 3 GB/d when ACBAR instrument installed
Degree Angular Scale Interferometer (DASI) 285.7 MB/d 285.7 MB/d (diagnostic peaks at 1300 MB/d)
CUSP (cooperating space physics projects) 15-20 MB/d Space Weather Forecasting, Modeling, and Data Archiving 20-50 MB/d (By 2005)
PAPEN LIDAR 180 MB/d 180 MB/d
HERNANDEZ 1.0 MB/d 1.0 MB/d
Educational Outreach 10% of Total Bandwidth (0.9 GB/d) 10% of Total Bandwidth (3.7 GB/d)
TOTAL 10.3 GB/d 41.1 GB/d

Note: Not a comprehensive list of requirements. Figures are approximate estimates of workshop participants and selected scientists not participating, which reflect the majority of current South Pole Station science projects.

  1. Changes in forecast:  Deep Ice STC was not selected as a finalist for the 1999 STC competition. Deep Ice seismic requirements in the long range forecast are subject to revision.
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