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| Data Series 135: Iowa Aeromagnetic Compilation Index |
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Survey No. |
Survey Type |
Survey Name |
Flown By |
Date Flown |
Spacing |
Dir. |
Altitude |
Datum |
Publication |
|
0059 |
M-Dz |
Manson (Blanden) |
USGS |
09/53 |
1-2 mi |
E-W |
1000 AG |
Tot.field, Arb.datum |
GP-476 |
|
0468 |
M-Dz |
Iowa Coop '61 |
USGS |
09/61-10/61 |
1 mi |
E-W |
1000 AG |
Tot.field, Arb.datum |
GP-476 |
|
0501A |
M-Dz |
Iowa Coop '62 |
USGS |
05/62-08/62 |
1 mi |
E-W |
1000 AG |
Tot.field, Arb.datum |
GP-476 |
|
0501B |
M-Dz |
Iowa Coop North '62 |
USGS |
05/62-08/62 |
1 mi |
E-W |
1000 AG |
Tot.field, Arb.datum |
GP-476 |
|
IA01 |
M-Dz |
Northwest Iowa |
Aero |
?/64 |
1 mi |
E-W |
1000 AG |
? |
GP-910 |
|
IA02 |
M-Dz |
Northeast Iowa |
Aero |
?/66 |
1 mi |
E-W |
1000 AG |
? |
GP-910 |
|
IA03 |
M-Dz |
East-central Iowa |
Aero |
?/68 |
1 mi |
E-W |
1000 AG |
? |
GP-910 |
|
IA04 |
M-Dz |
Southeast Iowa |
Aero |
?/70 |
1 mi |
E-W |
1000 AG |
? |
GP-910 |
|
IA05 |
M-Dz |
Southern Iowa |
LKB |
?/72 |
1 mi |
E-W |
2000 B |
? |
GP-910 |
Survey No.: Internal USGS identification number.
Survey Type: M = magnetics; Dz = digitized data.
Survey Name: Internal project name (not always the name used in publication title).
Flown By: Company or government agency who flew the original survey; Aero = Aero Services; LKB = Lockwood, Kessler, and Bartlett.
Date Flown: Month indicated by query where uncertain.
Spacing and Dir.: Primary flight-line spacing and primary flight-line direction.
Altitude: Primary flight altitude in feet; B = barometric elevation; AG = above ground draped over topography.
Datum: Indicates if a regional field was removed and, if it could be determined, the base value removed. Tot. (total) field = no regional field was removed. Arb. (arbitrary) datum = the base value removed was not stated on the map; ? = unknown.
Publication: Brief publication reference. USGS publications are listed as: Geophysical Maps = GP-xxx.
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