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 Province: CASCADE RANGES
Local Geology: PLEISTOCENE VOLCANICS
Comments: NONE
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
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
Site Number: 714
Current Site Name: HAT CREEK
Location: HAT CREEK RADIO ASTRO. OBS., CASSEL, CA
Monument Occupying Occupation Starting Ending Number System Designator Date DateNo Previous Occupations
Monument Occupying Occupation Starting Ending Number System Designator Date Date 7218 26-METER 72186501 06-JUN-83 31-DEC-99