Local Release

This page has been reformatted to list the LP Spectrometer data for different portions of the LP mission as shown in the table below:

High1 Dataset High2 Dataset Low Dataset

Dates Jan. 16, 1998 to
Oct. 5, 1998 Oct. 7, 1998
to Dec. 19, 1998 Dec. 19, 1998 to
July 31, 1999

Type high-altitude,
spin axis north high-altitude,
spin axis south low-altitude,
spin axis south

Mean altitude 100 km 100 km 30 km

As before, the files included here have the following formats: Common Data Format (CDF), Interactive Data Language (IDL), PDF, MS Word, and ASCII text format. Use your browser's "SAVE LINK AS ..." function to download the data files (this function is often found when you right click on a link).

General Description of Data and/or Documentation

GRS Level 1 Count Rates

The GRS Level 1 data contains count rate data for the thorium (2.61 MeV), potassium (1.46 MeV) gamma-ray lines and averaged GRS spectra. The count rates are binned in equal area pixels that have a size of 5x5 degrees at the lunar equator.

GRS Absolute Thorium

The GRS thorium data contains absolute thorium abundances for both the high- and low-altitude data as described by [Lawrence et al., GRL, Vol. 26, 2681, 1999 and Lawrence et al., JGR, Vol. 105, #E8, 20307, 2000]. These data are binned in equal area pixels that have a size of 2x2 degrees at the lunar equator.

NS Level 1

The NS Level 1 data contains count rate data for the epithermal and thermal neutrons. The count rates are binned in equal area pixels that have a size of 5x5 degrees at the lunar equator.

APS Level 1

The APS Level 1 data contains time series data of APS count rates for the entire mission.

Inferred Samarium Abundances

Inferred samarium abundances from an analysis of LP NS, GRS, and Clementine spectral reflectance data as described by Elphic et al., J. Geophys. Res.,, Vol. 105, #E8, 20333, 2000.

Documentation and Programs

The documentation and programs contain information which describe how the data were processed and IDL routines which can be used to read the data.

NOTE: Technology, Data, Software and Publications are Publicly Available