|
|
|
|
|
|
|
|
|
|
|
|
1097 |
Sherbrooke-Lewiston '80 |
USGS |
11/80 |
0.5 mi. |
N-S |
300 AG |
2174 |
IGRF80 |
OF85-501 |
|
1107A |
Sherbrooke-Lewis. Lines E. |
USGS |
09/81 |
0.5 mi. |
N-S |
300 AG |
360 |
IGRF80 |
OF85-501 |
|
1107B |
Sherbrooke-Lewis. Lines W. |
USGS |
09/81 |
0.5 mi. |
N-S |
300 AG |
900 |
IGRF80 |
OF85-501 |
|
4117 |
Maine Profiles |
QEB |
10/82 |
0.5 mi. |
N-S |
500 AG |
1121 |
IGRF80 |
OF85-501 |
|
4118 |
Sherbrooke-Lewiston '82 |
QEB |
10/82 |
0.5 mi. |
E-W |
500 AG |
4444 |
IGRF80 |
OF85-501 |
Description of Table
No.: Internal USGS identification
number
Name: Internal project name (not always the name used in
publication title)
Flown By: Company or government agency who flew the original
survey
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
LnMi.: Approximate total of line miles flown for this survey
Datum: Indicates if a regional field was removed and, if
it could be determined, the base value removed. Total field = no regional
was removed. Arb. (arbitrary) datum = the base value removed was not stated
on the map or in survey reports.
Publication: Brief publication reference*. USGS publications are listed as: Open-File reports
= OFxx-yyyy where xx is the publication year, Bulletins and Professional
Papers = B-yyyy or P-yyyy, Geophysical Maps = GP-yyyy, Miscellaneous Field
Studies Maps = MF-yyyy, Miscellaneous Investigations Maps = I-yyyy.
*For a full reference for USGS publications see: http://library.usgs.gov/