FLAGSTAFF SITE INFORMATION

SITE INFORMATION

Site Number: 27
Current Site Name: FLAGSTAFF
Other Site Name:
Location: FLAGSTAFF, AZ
Geographic Region: NORTH AMERICA
Tectonic Plate: NORTH AMERICAN

Primary Scientific Purposes: MEASUREMENTS SUPPORTING THE DETERMINATION OF REGIONAL DEFORMATION.

Site Description: THE SITE IS LOCATED AT THE NORTH EDGE OF FLAGSTAFF, ARIZONA, ON THE GROUNDS OF THE UNITED STATES GEOLOGICAL SURVEY. THE SITE IS EQUIPPED WITH TWO MONUMENTS SET IN AN ASPHALT PARKING LOT. ONE MONUMENT IS COMPATIBLE FOR OCCUPATION BY MOBILE VLBI SYSTEMS. BECAUSE OF ITS PROXIMITY TO A BUILDING, THE SECOND MONUMENT IS COMPATIBLE FOR OCCUPATION BY TLRS-1 ONLY.

Site Topo Map: FLAGSTAFF WEST, ARIZONA. N3507.5-W11137.5/7.5, U.S.G.S., RESTON, VA 22092

GEOLOGICAL INFORMATION

Geological Province: COLORADO PLATEAU

Local Geology: VOLCANIC FLOWS AND TUFF

Comments: NONE

MONUMENT INFORMATION

Site Number: 27
Current Site Name: FLAGSTAFF
Location: FLAGSTAFF, AZ
Number of Observing Monuments: 2
Surveyed into National Network? YES

Monument Number: 7261
Type of Monument: NGS STATION DISK
Monument Inscription: FLAGSTAFF NCMN 1981
Systems Using Monument: TLRS AND MOBILE VLBI

Latitude: N 35 12' 52.88751"
Longitude: W 111 38' 05.04098"
Elevation: meters
Height Above Ellipsoid: 2143.910 meters
Survey Source/Date: BFEC HAVAGO ADJUSTMENT / 08-AUG-90
Datum/Ellipsoid: NAD-83 /GRS-80

Comments: THE MONUMENT IS LOCATED IN THE CENTER OF THE U.S.G.S. PARKING LOT.

Differential Coordinates FROM Observing Monument 7261 TO Reference Monuments and Other Observing Monuments

Data Source: BFEC

Differential Coordinates

 Mon.
Number         Monument Inscription              X           Y           Z

 7891   FLAGSTAFF RMT NO.  4 1981               16.0215    -16.9849    -14.5357
  --    CAL PIER A                             139.2950    -71.4172    -19.2233
  --    CAL PIER B                              15.1651    -75.6483    -93.4852
  --    FLAGSTAFF NCMN 1                        19.9584     -7.2788      1.0525
  --    FLAGSTAFF NCMN 2                       -24.2705     -5.2836    -22.2775
  --    FLAGSTAFF NCMN 3                       -16.4260     22.0892     18.8558
  --    NCMN N0.  1                             19.9584     -7.2788      1.0525
  --    NCMN NO.  2                            -24.2705     -5.2836    -22.2775
  --    NCMN NO.  3                            -16.4260     22.0892     18.8558
  --    NCMN NO.  4 (CDP 7891)                  16.0215    -16.9849    -14.5357

 Mon.
Number         Monument Inscription            North        East         Up

 7891   FLAGSTAFF RMT NO.  4 1981              -17.5739     21.1547     -0.3079
  --    CAL PIER A
  --    CAL PIER B
  --    FLAGSTAFF NCMN 1                         1.2012     21.2360      0.1232
  --    FLAGSTAFF NCMN 2                       -26.1925    -20.6130     -1.5224
  --    FLAGSTAFF NCMN 3                        23.7535    -23.4125     -0.9558
  --    NCMN N0.  1                              1.2012     21.2360      0.1232
  --    NCMN NO.  2                            -26.1925    -20.6130     -1.5224
  --    NCMN NO.  3                             23.7535    -23.4125     -0.9558
  --    NCMN NO.  4 (CDP 7891)                 -17.5739     21.1547     -0.3079

MONUMENT INFORMATION

(Continued)

Site Number: 27
Current Site Name: FLAGSTAFF
Location: FLAGSTAFF, AZ

Monument Number: 7891
Type of Monument: NGS STATION DISK
Monument Inscription: FLAGSTAFF RMT NO. 4 1981
Systems Using Monument: TLRS

Latitude: N 35 12' 52.31746"
Longitude: W 111 38' 04.20482"
Elevation: meters
Height Above Ellipsoid: 2143.601 meters
Survey Source/Date: BFEC HAVAGO ADJUSTMENT / 09-AUG-90
Datum/Ellipsoid: NAD-83/ GRS-80

Comments: THE MONUMENT IS ADJACENT TO A BUILDING AND NOT SUITABLE FOR MV SYSTEMS. THE DISK REPLACES THE NAIL IN THE PAVEMENT.

Differential Coordinates FROM Observing Monument 7891 TO Reference Monuments and Other Observing Monuments

Data Source: NGS HAVAGO ADJUSTMENT 86-09-05

Differential Coordinates

 Mon.
Number         Monument Inscription              X           Y           Z

 7261   FLAGSTAFF NCMN                         -16.0215     16.9849     14.5357
 7261   FLAGSTAFF NCMN 1981                    -16.0215     16.9849     14.5357
  --    CAL PIER A                             123.2735    -54.4234     -4.6877
  --    CAL PIER B                              -0.8564    -58.6635    -78.9496
  --    FLAGSTAFF NCMN 1                         3.9369      9.7061     15.5882
  --    FLAGSTAFF NCMN 2                       -40.2920     11.7012     -7.7418
  --    FLAGSTAFF NCMN 3                       -32.4474     39.0741     33.3915
  --    NCMN NO.  1                              3.9369      9.7061     15.5882
  --    NCMN NO.  2                            -40.2920     11.7012     -7.7418
  --    NCMN NO.  3                            -32.4474     39.0741     33.3915

 Mon.
Number         Monument Inscription            North        East         Up

 7261   FLAGSTAFF NCMN                          17.5739    -21.1547      0.3079
 7261   FLAGSTAFF NCMN 1981                     17.5739    -21.1547      0.3079
  --    CAL PIER A
  --    CAL PIER B                             -96.1287     20.8311     -0.7125
  --    FLAGSTAFF NCMN 1                        18.7751      0.0813      0.4311
  --    FLAGSTAFF NCMN 2                        -8.6185    -41.7677     -1.2146
  --    FLAGSTAFF NCMN 3                        41.3275    -44.5671     -0.6481
  --    NCMN NO.  1                             18.7751      0.0813      0.4311
  --    NCMN NO.  2                             -8.6185    -41.7677     -1.2146
  --    NCMN NO.  3                             41.3275    -44.5671     -0.6481

FLAGSTAFF SITE SKETCH

PREVIOUS OCCUPATION INFORMATION

Site Number: 27
Current Site Name: FLAGSTAFF
Location: FLAGSTAFF, AZ

SLR OCCUPATIONS

Monument    Occupying    Occupation    Starting      Ending
 Number       System     Designator      Date         Date

  7261        TLRS-1      72611101     01-MAY-91    15-AUG-91
  7891        TLRS-1      78911101     20-JUN-81    06-AUG-81

VLBI OCCUPATIONS

Monument    Occupying    Occupation    Starting      Ending
 Number       System     Designator      Date         Date

  7261         MV-3       72615301     17-APR-84    18-APR-84
  7261         MV-3       72615302     02-MAY-85    03-MAY-85
  7261         MV-2       72615203     26-MAR-86    27-MAR-86
  7261         MV-2       72615204     06-MAY-87    07-MAY-87
  7261         MV-3       72615305     24-APR-88    26-APR-88
  7261         MV-2       72615206     14-OCT-88    16-OCT-88
  7261         MV-2       72615207     03-NOV-90    05-NOV-90