HAT CREEK SITE INFORMATION

SITE INFORMATION

Site Number: 714
Current Site Name: HAT CREEK
Other Site Name:
Location: HAT CREEK RADIO ASTRO. OBS., CASSEL, CA
Geographic Region: CALIFORNIA
Tectonic Plate: NORTH AMERICAN

Primary Scientific Purposes: MEASUREMENTS SUPPORTING THE DETERMINATION OF PLATE STABILITY, INTERNAL PLATE DEFORMATION, AND REGIONAL DEFORMATION.

Site Description: THE SITE IS LOCATED IN NORTHERN CALIFORNIA AT THE HAT CREEK RADIO OBSERVATORY WHICH IS OWNED BY THE UNIVERSITY OF CALIFORNIA AT BERKELEY. ONE FIXED 26-METER RADIO TELESCOPE WAS USED FOR VLBI MEASUREMENTS. THE ANTENNA WAS DESTROYED BY HIGH WINDS IN JANUARY 1993.

Site Topo Map: BURNEY, CALIFORNIA. 1957, U.S.G.S., RESTON, VA 22092

GEOLOGICAL INFORMATION

Geological Province: CASCADE RANGES

Local Geology: PLEISTOCENE VOLCANICS

Comments: NONE

MONUMENT INFORMATION

Site Number: 714
Current Site Name: HAT CREEK
Location: HAT CREEK RADIO ASTRO. OBS., CASSEL, CA
Number of Observing Monuments: 1
Surveyed into National Network? YES

Monument Number: 7218
Type of Monument: INTERSECTION OF AXIS OF THE ANTENNA
Monument Inscription: NONE
Systems Using Monument: 26-METER (85-FOOT) FIXED RADIO TELESCOPE

Latitude: N 40 49' 02.43370"
Longitude: W 121 28' 13.84265"
Elevation: meters
Height Above Ellipsoid: 1009.259 meters
Survey Source/Date: BFEC / 14-MAY-92
Datum/Ellipsoid: NAD83/GRS-80

Comments: ORIGINAL ANTENNA SURVEY BY NGS IN 1987. NAD83 POSITION FROM NGS DATABASE. THE ANTENNA WAS DESTROYED IN JANUARY 1993.

Differential Coordinates FROM Observing Monument 7218 TO Reference Monuments and Other Observing Monuments

Data Source: NGS HAVAGO ADJUSTMENT 87-03-16

Differential Coordinates

 Mon.
Number         Monument Inscription              X           Y           Z

  --    BRIDGE 1948                            -861.907   -6997.155   -7220.464
  --    DOYLE 1948                            -4191.987    7745.539    5016.219
  --    HAT CREEK NCMN A                       130.6037     21.6264     77.6422
  --    HAT CREEK NCMN B                        97.9746    -73.5856    -33.4897
  --    HAT CREEK NCMN C                       -67.7086     -3.3723    -66.9130
  --    HAT CREEK NCMN D                       -39.5433     61.0460     18.1055
  --    HAT CREEK NCMN E
  --    RIM 1948                               3471.340   -3323.450    -378.242
  --    SOUTH ALIGNMENT PIER                    -6.0041     -9.8512    -33.6312

 Mon.
Number         Monument Inscription            North        East         Up

  --    BRIDGE 1948
  --    DOYLE 1948
  --    HAT CREEK NCMN A
  --    HAT CREEK NCMN B
  --    HAT CREEK NCMN C                       -75.6248    -55.9887     -14.810
  --    HAT CREEK NCMN D                        34.2416    -65.5965    -11.9459
  --    HAT CREEK NCMN E                         0.0000      0.0000    -14.9420
  --    RIM 1948
  --    SOUTH ALIGNMENT PIER                   -32.9930      0.0220    -13.2521

HAT CREEK SITE SKETCH

PREVIOUS OCCUPATION INFORMATION

Site Number: 714
Current Site Name: HAT CREEK
Location: HAT CREEK RADIO ASTRO. OBS., CASSEL, CA

SLR OCCUPATIONS

Monument    Occupying    Occupation    Starting      Ending
 Number       System     Designator      Date         Date

No Previous Occupations

VLBI OCCUPATIONS

Monument    Occupying    Occupation    Starting      Ending
 Number       System     Designator      Date         Date

  7218       26-METER     72186501     06-JUN-83    31-DEC-99