This bundle includes three collections: data, browse and document.

The data collection consists of two ASCII data files (Bm_output_0E360E.tab and 
dipoles_0E360E.tab).  The file Bm_output_0E360E.tab is the actual map of the 
vector field components at a constant altitude of 40 km extending from 35N to 
75N latitude and covering all longitudes.  The file dipoles_0E360E.tab describes 
an array of vertically oriented magnetic dipoles at 1 degree resolution in 
latitude and 2 degrees resolution in longitude located at a depth of 20 km 
below the mean Mercury surface. The dipoles can be used by any suitably 
experienced person to calculate the field at any constant altitude. 

The browse collection consists of two PDF files (fig_MLA_btot2_90-270E_neumann.pdf 
and fig_MLA_btot2_270-90E_neumann.pdf).  These are PDF images of the 40 km 
altitude map, superposed onto a map of Mercury's topography derived from MESSENGER 
Laser Altimeter data (furnished by Greg Neumann). 

For the field map (Bm_output_0E360E.dat), column 1 is longitude in degrees, 
column 2 is latitude, column 3 is the field magnitude in nT, column 4 is the 
radial field component in nT, column 5 is the east component in nT, column 6 
is the north component in nT, and column 7 is the altitude in km (40 km). 
Zero values (mainly found along the map edges) indicate no useful data. The 
resolution of the map is 1 degree in longitude and 0.5 degrees in latitude. 

For the dipole array (dipoles_0E360E.dat), column 1 is longitude in degrees, 
column 2 is latitude, and column 3 is the dipole moment in units of G-km^3. 
Positive moments indicate outward directed dipole moments; negative moments 
indicate inward directed moments.

The document collection includes the following papers: 

Hood, L. L. (2015), Initial mapping of mercury's crustal magnetic field: 
Relationship to the Caloris impact basin, Geophys. Res. Lett., 42, 10,565-10,572, 
doi:10.1002/2015GL066451

Hood, L. L. (2016), Magnetic anomalies concentrated near and within Mercury's 
impact basins: Early mapping and interpretation, J. Geophys. res. planets, 121, 1016-1025, 
doi:10.1002/2016JE005048.

Hood, L. L.; Oliveria, J. S.: Galluzzi, V.; Rothery, D. A., (2018), Investigating Sources 
of Mercury's crustal Magnetic Field: Further mapping of MESSENGER Magnetometer Data, 
Journal of Geophysical Research: Planets, 123, 2647-2666, 
doi:10.1029/2018JE005683

Hood, L. L.; Oliveira, J. S.; Spudis, P. D.; Galluzzi, V., Further Mapping of Mercury's 
Crustal Magnetic Field Using MESSENGER Magnetometer Data, 2018. This paper was originally 
published in  Mercury: Current and Future Science of the Innermost Planet, 
Proceedings of the conference held 1-3 May, 2018 in Columbia, Maryland. 
LPI Contribution No. 2047, 2018, id.6079.