# Presentation: 353469

## Slide 1

## Slide 2

## Slide 3

## Rationale For Restoring Data

- Avoid Repeating Experiments
- Aid in Design of New Experiments
- Use New Data Analysis Techniques and Hardware
- Explore Environmental Hazards
- Help Define Safe Landing Sites

## Soil Mechanics

## Slide 6

## X-Ray Spectrometer

- Apollos 15 and 16
- Orbital observations of  flourescent X-ray emissions from the Moon's surface used to map lunar composition
- Counts from 32 channels online at nssdcftp

## Solar Wind Spectrometer

- Apollos 12 and 15
- Measured direction and intensities of electron and positive ion components of the solar wind and magnetotail plasma at the surface of the Moon
- Density and velocity data online on CDAWeb

## Cold Cathode Ion Gage (CCIG)

- Apollos 14 and 15
- Determine amount of
- gas present at lunar
- surface to constrain
- source and loss
- mechanisms
- Temperature and
- particle density data
- online at nssdc ftp

## Slide 10

## Lunar Dust DetectorDust, Thermal, and Radiation Engineering Measurements Package

- Apollos 14 and 15
- Assessed long-term effects
- of lunar environment (dust,
- temperature, radiation) on
- solar cells.
- Solar cell output data
- currently being scanned
- and OCRed

## Slide 12

## Charged Particle Lunar Environment

- Apollo 14
- Measured energy spectra of low energy charged particles striking the lunar surface - plasma from the sun and the Earth's magnetotail
- Electron and ion count data in 18 energy windows

## Suprathermal Ion Detector Experiment

- Apollos 14 and 15
- Measured positive ions
- reaching the lunar
- surface from solar wind,
- magnetosphere and
- surface and atmosphere
- interactions
- Energy and mass
- spectra over time

## Earth Based Radar

- Goldstone 70-cm radar map of the lunar south pole

## PDS Lunar Data Node

- Active Seismic (14, 16, 17)

- Heat Flow (15, 17)

- Far UV Spectrometer (17)

- Lunar Particles and Boundary Layer (15, 16)

## PDS Lunar Data Node

- Gamma-Ray Spectrometer (15, 16)

- Mass Spectrometer (15, 16)

- Alpha Particle Spectrometer (15, 16)

## Surface Magnetometer

- Apollos 12, 15 and 16
- Measured Moon's surface
- magnetic field over time,
- information on electrical
- diffusivity, core, local
- magnetic anomalies
- Magnetic vector data
- with time

## LACE

- Apollo 17
- Mass spectrometer studied composition of tenuous lunar surface atmosphere
- Mass spectra of gas species for 12 peak amplitudes

- Lunar Atmospheric Composition Experiment

## Passive Seismic

- Apollos 12, 14, 15, and 16
- Measured seismic vibrations at each of the landing sites to study moonquakes, meteoroid impacts, and the lunar interior
- Continuous seismic data records

## Surface Electrical Properties

- Apollo 17
- Data on electromagnetic properties of the lunar surface and near-surface
- Electrostatic dust charging and levitation
- Received signal strength at 5 transmitted frequencies

## Bistatic Radar

- Apollos 14, 15, and 16
- Radio signals sent from Command Module, reflected off lunar surface and received at Earth to study surface properties
- Reduced short-time averages of electromagnetic wave (116 cm) spectra

## Subsatellite Magnetometer

- Apollos 15 and 16
- Physical and electrical properties of the Moon and interactions with solar plasma
- 24-second averaged magnetic field data transverse and parallel to the spin axis

## Surface Magnetometer

- Lunar Atmospheric Composition Experiment
- Passive Seismic Experiment
- Surface Electrical Properties
- Bistatic Radar
- Subsatellite Magnetometer
- http://nssdc.gsfc.nasa.gov/planetary/lunar/lunar_data/