Table 1 COLLECTING SITES ASSOCIATED WITH NRL IN THE STUDY OF AIRBORNE
FISSION PRODUCTS ALONG THE 80TH MERIDIAN
Station
Elevation,
Cooperating
Longitude
Thule,
76°35’ N
68°35 W
259
Apr. 1958 to
U, $8. Air Force
Coral Harbour,
64°12'N
83°22) W
59
Mar. 1958 to
Meteorological Branch,
Moosonee,
Ontario,
Canada
Bedord,
Mass,
Washington,
D,¢,*
Columbia,
91°16'N
B0°3F W
10
Nov. 1957 to
Dec, 1962*
Meteorological Branch.
Department of Transport. Canada
42°27°N
71°22’W
80
USAF Cambridge Research Center
38°SY N
TT 29 W
82
32°S7'N
81°07 W
69
Jan. 1958 to
Dec, 1959
May 1956 to
Dec, 1962*
Jan. 1958 to
25°49 N
80°17 W
4
U.S. Weather Bureau
18°26’ N
66°00’ W
10
8°00 N
79°35 W
10
June 1957 to
Dec. 1962*
June 1957 to
Dec. 1962*
June 1956 to
Dec, 1962*
4°37 N
74°04" W
2640
July 1957 to
Dec. 1959
Instituto Geofisico de los Andes
Colombianos
Quito,
Ecuador
0°08’°S
Ta°26° W
2818
Guayaquil,
Ecuador
2°10S
79°52’ W
7
Apr. 1957 to
Dec. 1959
Observatorio Astronomico
de Quito
Iquitos,
Peru
Lima,
Peru
Huarcayo,
Peru
Chacaltaya,
Bolivia
3°45'S
73°11 W
117
12°01V’S
TT°OTW
30
12°07'S
75°20 W
3353
1710'S
68°15 W
5220
23°37'S
70°16’ W
519
30°02’S
51°L3’ W
24
33°27°S
70°42? W
520
41°27'S
72°ST W
5
53°08’S
70° 53° Ww
3
Greenland
NWT, Canada
5. ¢,
Miami,
Fla.
San Juan,
Puerto Rico
Miraflores,
Panama
Canal Zone
Bogota,
Colombia
Antofagasta,
Chile
Porto Alegre,
Brazil
Santiago,
Chile
Puerto Montt,
Chile
Punta Arenas,
Chile
m
Period of
Latitude
operation
Dec, 1962*
Dec, 1959
Oct. 1959
May 1956 to
Dec. 1962*
Oct. 1957 to
Dec, 1959
May 1956 to
Dec, 1962*
Oct. 1957 to
Dec, 1959
Sept, 1957 to.
Dec. 1962*
Nov, 1957 to
Dec. 1962*
Dec, 1957 to
Oct, 1959
July 1956 to
Dec. 1962*
Dec. 1957 to
Dec. 1962*
Oct. 1956 to
Dec. 1962
organizations
Department of Transport, Canada
U.S. Weather Bureau
U.S, Weather Bureau
U.S. Weather Bureau
U, 8. Naval Research Laboratory,
Canal Zone Corrosion Laboratory
Meteorological Office
Direccion General
de Aviacion Civil
Corporacion Peruana de Aeropuertos
y Aviacion Comercial (CORPAC)
Corporacion Peruana de Aeropuertos
y Aviacion Comercial (CORPAC)
Instituto Geofisico de Huancayo
Universidad Mayor de San Andres,
Laboratorio de Fisica
Cosmica de Chacaltaya
NASA Satellite
Tracking Station
Servico de Meteorologia
(Brasil)
Oficina Meteorclogica de Chile
Oficina Meteorologica de Chile
Oficina Meteorologica de Chile
,
«Operation continuing as part of HASL 80th meridian network.
asbestos paper) at a constant rate (approximately 1200 m?/day) with
filter changes daily, thrice weekly, or weekly as the situation war-
ranted. Air flow was not measured at the collecting site but was calculated from blower performance as a function of station altitude and
pump-rotation rate.
samples, with pertinent data attached, were returned to NRL via
air transportation and measured for gross beta activity two weeks
following the end of the collection period. Prior to measurement the
samples were ashed at 650°C and compressed to disks of 1 sq in. area,
each weighing about 1 g. The radioactivity standard was RaDE (7!°Pp210Ri) (1.17 Mev beta) mounted with a similar quantity of ash. The ac-
tivity was determined on conventional beta-counting equipment equipped
for automatic sample changing. The time to reacha preset total of 2000