KAGUYA (SELENE) LMAG Derived Data

Lunar Magnetometer Derived Data

SELENE Data Archive: PDS Source Information

PDS3 Datasets: SLN-L-LMAG-5-MA-GRID-V1.0, SLN-L-LMAG-5-MA-GRID-OPTION-V1.0,SLN-L-LMAG-5-MA-MAP-V1.0, SLN-L-LMAG-5-MA-MAP-OPTION-V1.0,SLN-L-LMAG-5-1D-SIGMA-ECS-V1.0

KAGUYA PDS3 to PDS4 Migration Status: N/A

For more information about LMAG derived products, see the KAGUYA (SELENE) Product Format Description - Lunar Magnetometer (LMAG).

LMAG derived products include magnetic anomaly map, magnetic anomaly grid data, and 1D electrical conductivity structure data.

Magnetic anomaly map is a map of magnetic anomaly components and related quantities. Grid spacing is 1 degree in each direction. The files contain north-south, west-east, vertical components of the magnetic anomaly, their standard errors, and number of data used for the calculations of the magnetic anomaly components (9 components in total). Altitude is 100 km for MA_MAP data. Magnetic field data of nominal observation are used. Altitude is 30 km for MA_MAPOP data (Tsunakawa et al. 2014). Magnetic field data of optional observation are used.

Magnetic anomaly grid data are grid data of magnetic anomaly components and related quantities. Grid spacing is 1 degree in each direction. The files contain north-south, west-east, vertical components of the magnetic anomaly, their standard errors, and number of data used for the calculations of the magnetic anomaly components (9 components in total). Altitude is 100 km for MA_GD data. Magnetic field data of nominal observation are used. Altitude is 30 km for MA_GDOP data (Tsunakawa et al. 2014). Magnetic field data of optional observation are used.

1D electrical conductivity structure data are one dimensional structure of electrical conductivity. Depth and conductivity values are recorded. Magnetic field data of nominal observation are used.

LMAG derived products have the following file names:

AAAAAAAA_NNN.ext (with detached PDS label)

where:

AAAAAAA: Product ID

MA_MAP: Magnetic Anomaly Map

MA_MAPOP: Magnetic Anomaly Map (Option)

MA_GD: Magnetic Anomaly Grid Data

MA_GDOP: Magnetic Anomaly Grid Data (Option)

1DSigma: 1D Electrical Conductivity Structure

1DSigmaOP: 1D Electrical Conductivity Structure (Option)

NNN: Version Number (three digits)

ext: File Extension

lbl: Label File

img: Data File for MA_MAP and MA_MAPOP

dat: Data File for MA_GD, MA_GDOP, 1DSigma, and 1DSigmaOP

ctg: Catalog Information File

sl2: L2 Data Set (tar archive)

In ODE, LMAG derived products have the following product IDs:

AAAAAAAA_00N

Tsunakawa, H., Takahashi, F., Shimizu, H., Shibuya, H., & Matsushima, M. (2014). Regional mapping of the lunar magnetic anomalies at the surface: Method and its application to strong and weak magnetic anomaly regions. Icarus, 228, 35-53. https://doi.org/10.1016/j.icarus.2013.09.026