EVEREST DORIS site description form


0. Form

    Prepared by   : SIMB (DORIS installation and maintenance department)
    Date prepared : 15/01/2025
    Report type   : UPDATE


1. Site location information

    Site name              : EVEREST
    Site DOMES number      : 21501
    Host agency            : EV-K2-CNR Committee
    City                   : Near the Everest base camp
    State or province      : Koshi
    Country                : NEPAL
    Tectonic plate         : EURA
    Geological information : 

    Geographical coordinates (ITRF) : 
        North Latitude       :  27 deg 57' 30''
        East Longitude       :  86 deg 48' 48''
        Ellipsoid height     :  4966 m
        Approximate altitude :  4991 m


2. DORIS antenna and reference point information

2.1
    Four character ID        : EVEB
    Antenna model            : Starec 52290 type
    Antenna serial number    : 17
    IERS DOMES number        : 21501S001
    CNES/IGN number          : 215011
    DORIS SSALTO number      : 28
    Date installed (dd/mm/yy): 22/05/1992
    Date removed (dd/mm/yy)  : 25/10/2024
    Antenna support type     : 0.3 metre tower
    Installed on             : Rock
    Height above ground mark : 0.732 m
    Ground mark type         : Brass plate mark
    Ground mark DOMES number : 21501M001
    Notes                    : 

2.2
    Four character ID        : EVEC
    Antenna model            : Starec C type
    Antenna serial number    : 217
    IERS DOMES number        : 21501S002
    CNES/IGN number          : 215011
    DORIS SSALTO number      : 1028
    Date installed (dd/mm/yy): 28/10/2024
    Date removed (dd/mm/yy)  : 
    Antenna support type     : 1m high very rigid metal tower
    Installed on             : Rock
    Height above ground mark : 1.444 m
    Ground mark type         : Cylindrical brass mark
    Ground mark DOMES number : 21501M002
    Notes                    : 

3. DORIS beacons information

3.1
    Beacon serial number        : 8633028
    Beacon model                : 1.0
    USO serial number           : 1.511
    4 Char. ID of the REF point : EVEC
    Date installed (dd/mm/yy)   : 22/05/1992
    Date removed (dd/mm/yy)     : 10/06/1993

3.2
    Beacon serial number        : 8633048
    Beacon model                : 1.0
    USO serial number           : 1.647
    4 Char. ID of the REF point : EVEC
    Date installed (dd/mm/yy)   : 10/06/1993
    Date removed (dd/mm/yy)     : 01/06/2003

3.3
    Beacon serial number        : 9904129
    Beacon model                : 2.0
    USO serial number           : 
    4 Char. ID of the REF point : EVEC
    Date installed (dd/mm/yy)   : 07/06/2003
    Date removed (dd/mm/yy)     : 27/09/2006

3.4
    Beacon serial number        : 9904115
    Beacon model                : 2.0
    USO serial number           : 3.119
    4 Char. ID of the REF point : EVEC
    Date installed (dd/mm/yy)   : 27/09/2006
    Date removed (dd/mm/yy)     : 20/10/2007

3.5
    Beacon serial number        : 3690068
    Beacon model                : 3.0
    USO serial number           : 3.504
    4 Char. ID of the REF point : EVEC
    Date installed (dd/mm/yy)   : 04/02/2008
    Date removed (dd/mm/yy)     : 27/10/2024

3.6
    Beacon serial number        : 22154077I
    Beacon model                : 4.0
    USO serial number           : 4.P0072
    4 Char. ID of the REF point : EVEC
    Date installed (dd/mm/yy)   : 29/10/2024
    Date removed (dd/mm/yy)     : 


4. ITRF coordinates and velocities of the current DORIS ref. point (EVEC)

    Solution         : dpod2020_030
    Epoch            : 2000.0 

    X = 313649.704 m    Y = 5633552.132 m    Z = 2974748.942 m
    Sig X = 0.001 m    Sig Y = 0.002 m    Sig Z = 0.001 m

    VX = -0.03810 m/y    VY = -0.00525 m/y    VZ = 0.02198 m/y
    Sig VX =  m/y    Sig VY =  m/y    Sig VZ =  m/y


5. IERS colocation information


6. Tide Gauge colocation information


7. Local site ties

7.1
    Point description      : Mark under DORIS antenna
    DOMES number           : 21501M002
    Differential components from the current DORIS ref. point (EVEC)
    to the above point (in the ITRS) :
    dX (m)                 : -0.069
    dY (m)                 : -1.274
    dZ (m)                 : -0.676
    Accuracy (m)           : 0.001
    Date measured          : 27/10/2024
    Additional information : Survey by IGN-F

7.2
    Point description      : DORIS antenna reference point (EVEB)
    DOMES number           : 21501S001
    Differential components from the current DORIS ref. point (EVEC)
    to the above point (in the ITRS) :
    dX (m)                 : 16.710
    dY (m)                 : 0.508
    dZ (m)                 : -12.188
    Accuracy (m)           : 0.003
    Date measured          : 28/10/2024
    Additional information : Survey by IGN-F


8. Meteorological Instrumentation

8.1 Humidity sensor
    Model        : AM2315
    Manufacturer : AOSONG
    Accuracy     : +/- 2 percents
    Notes        : 

8.2 Pressure sensor
    Model        : BMP280
    Manufacturer : Bosch
    Accuracy     : +/- 0.12 hPa, equiv. to +/- 1 m
    Height       :  m below the current DORIS ref. point (EVEC)
    Notes        : Long term stability +/- 1 hPa per year

8.3 Temperature sensor
    Model        : AM2315
    Manufacturer : AOSONG
    Accuracy     : +/- 0.1 deg C
    Notes        : 


9. DORIS network contacts

    Primary contact:

    Name            : Jerome SAUNIER
    Agency          : IGN Institut Geographique National
    Mailing address : Service de Geodesie et de Metrologie
                    : 73 avenue de Paris
                    : 94165 SAINT-MANDE Cedex    FRANCE
    Telephone       : + 33 1 43 98 83 63
    Fax             :  
    E-mail          : jerome (.) saunier (@) ign.fr

    Secondary contact:

    Name            : Vincent GARCIA
    Agency          : CNES Centre National d'Etudes Spatiales
    Mailing address : CNES (DNO/TSA/IS)
                    : 18 Avenue Edouard Belin
                    : 31401 TOULOUSE Cedex    FRANCE
    Telephone       : + 33 5 61 27 37 75
    Fax             :  
    E-mail          : vincent (.) garcia (@) cnes.fr