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Table 1 – Aeromagnetic Surveys in Michigan
Survey No. Data Type Survey Name Flown By Date Flown Flight Spacing Flight Dir. Flight Altitude (ft) Datum Data Source
0071 A Michigan A (Iron) USGS 07/1947 0.25 mi N-S 500 AG Tot.field, Arb.datum GP-599-609, USGS Analog
0072 A Michigan C USGS 06/1948 0.33 mi N-S 500 AG Tot.field, Arb.datum GP-610-611, USGS Analog
0073 A Michigan F USGS 05/1950-06/1950 0.25 mi N-S 500 AG Tot.field, Arb.datum GP-467, USGS Analog
0075A A Michigan B (Keweenaw) USGS 06/1948 0.25-1.0 mi N-S 500 AG Tot.field, Arb.datum GP-313-324, USGS Analog
0075C A Michigan B ('50) USGS 06/1950 0.5 mi N-S 500 AG Tot.field, Arb.datum GP-829, USGS Analog
0458A A Michigan E North USGS 07/1949-08/1949 0.25 mi E-W 500 AG Tot.field, Arb.datum GP-607,609,611, USGS Analog
0500 A Michigan Coop '62 USGS 09/1962 0.25 mi N-S 500 AG Tot.field, Arb.datum GP-828, USGS Analog
0518A A Michigan Coop South '63 USGS 08/1963 0.25 mi N-S 500 AG Tot.field, Arb.datum GP-831,834, USGS Analog
0548 A Michigan Coop West '65 USGS 05/1965 0.5 mi N-S 500 AG Tot.field, Arb.datum GP-578,579, USGS Analog
0573 A Menominee USGS 06/1966 0.5 mi N-S 500 AG Tot.field, Arb.datum GP-711, USGS Analog
0607 A Delta USGS 06/1967 0.5 mi N-S 500 AG Tot.field, Arb.datum GP-833, USGS Analog
MI-03 A Great Lakes MSU 06/1964-08/1964 6 mi NE-SW 3000 B Tot.field, Arb.datum O'Hara (1981)
3143A D Upper Michigan East LKB 09/1978-11/1978 1 mi N-S 500 AG DIGRF OFR 79-833,  USGS digital
3143B D Upper Michigan West LKB 09/1978-11/1978 2 mi E-W 500 AG DIGRF OFR 79-833,  USGS digital
3176A D Michigan Peninsula East GeoData 05/1979-07/1979 1-2 mi N-S 500 AG DIGRF OFR 80-830,  USGS digital
3176B D Michigan Peninsula West GeoData 05/1979-07/1979 1 mi N-S 500 AG DIGRF OFR 80-830,  USGS digital
4221 D S and NE Wisconsin High Sense 11/1998-02/1999 0.5 mi N-S 1000 AG DIGRF OFR 99-527,  USGS digital
6136 D Upper Michigan GeoMet 09/1979 6 mi E-W 400 AG DIGRF Geometrics (1980a)
6195 D Indiana area GeoMet 10/1980-12/1980 6 mi E-W 400 AG DIGRF Geometrics (1980b, 1981a)
6196 D Central Ohio GeoMet 11/1980-05/1981 6 mi E-W 400 AG DIGRF Geometrics (1981f)
6198 D Michigan Area GeoMet 05/1981-06-1981 6 mi E-W 400 AG DIGRF Geometrics (1981b,c,d,e,g)
C-122 D Lake Erie Canada 09/1984-08/1985 1.2 mi E-W 1000 AG DIGRF Geol  Survey of Canada
C-129 D Lake Huron Canada 07/1986-09/1986 1.2 mi E-W 1000 AG DIGRF Geol  Survey of Canada
C-151 D Lake St. Clair Canada 07/1986 0.6 mi E-W 1000 AG DIGRF Geol  Survey of Canada
C-153 D Lake Superior Canada 07/1987-09/1987 1.2 mi N-S 1000 AG DIGRF Geol  Survey of Canada

Description of Table:

Survey No.: Internal USGS identification number.
Data Type: A=Analog; D=digital.
Survey Name: Internal project name (not always the name used in publication title).
Flown By: Company or government agency who flew the original survey: GeoMet=EG&G Geometrics; LKB = Lockwood, Kessler, and Bartlett; MSU=Michigan State University.
Date Flown: Month and year of flight.
Flight Spacing and Dir.: Primary flight-line spacing and primary flight-line direction.
Flight 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.
Data Source: Brief publication references are for analog USGS publications. These are listed as: Geophysical Maps (GP-xxx), or Open File Reports (OFR xx-xxxx); Links are to online digital USGS files, online digitized USGS Analog files, or to online Geological Survey of Canada aeromagnetic survey files. More complete USGS references are given in Hill (1991).
Revised March 7, 2018

Posted March 2009

For more information about this report contact: Steve Snyder.