Inverting magnetic meridian data using nonlinear optimization

Earth, Planets and Space

Table 2 Site names and locations for inversion results

Place	Code	Geomagnetic longitude	Geomagnetic latitude	Magnetic longitude	Magnetic latitude	Inverse weight	Notes
Cape Dorset	CDRT	283.4	64.2	1.9	73.4	1	MACCS station
Ivujivik	HUB7	282.09	62.42	359.61	71.86	1	Denoted Inujivik in data files
Akulivik	HUB8	281.81	60.81	358.97	70.37	1	AUTUMNX AKUL
Inukjuak	HUB9	281.88	58.45	358.86	68.15	1	AUTUMNX INUK
Sanikiluaq	SNK	280.8	56.6	357.1	66.5	1	NRCan observatory
Wemendji	WEMQ	282.03	53.05	358.69	62.99	0.3
Matagami	HUB6	282.36	49.76	358.94	59.79	0.3
Val d’Or	VLDR	282.22	48.10	358.61	58.20	1 (X)	AUTUMNX VLDR
Val d’Or	VLDR	282.22	48.10	358.61	58.20	0.3 (Z)	AUTUMNX VLDR

Ottawa is also shown on the map but was not used in inversion. Val d’Or was weighted less in the X than the Z component since electrojet effects extend further south in Z. Magnetic coordinates given are corrected geomagnetic (CGM) for 2007 as calculated at http://omniweb.gsfc.nasa.gov