SLDEM2015 SLOPE DATASET

The LOLA team has prepared higherlevel map products describing the lunar
surface slopes, based on the SLDEM2015 shape data. Two parameters are available
globally: maximum slope (in degrees) and slope azimuth (in degrees).
The maximum slope is the angle between the surface normal vector and the radial
direction.
The slope azimuth is the angle between the horizontallyprojected surface
normal vector and the unit vector pointing to the North Pole. It is defined
as increasing clockwise over the range [180,180] degrees.
These slope and azimuth maps are made available at various resolutions: 64
pixels per degree (ppd; ~500m at the equator), 128 ppd (~250m at the equator),
256 ppd (~120m at the equator), and 512 ppd (~60m at the equator). LOLA
topographic maps are also available at these resolutions.
Except for the highest resolution of 512 ppd, these global maps are available
as single products. The 256 ppd and 512 ppd maps are available as tiled
products, with 12 and 48 tiles respectively. Each map is archived in two
formats: a FLOAT_IMG version (single precision binary tables) and a
GeoJPEG2000 version (for its smaller filesize and ease of import in GIS
programs).
DIRECTORY STRUCTURE
Slope and slope azimuth map products can be found in the following directory
stucture. There is a onetoone correspondence between the FLOAT_IMG and JP2
directories. Each data file is accompanied by a PDS compliant data label
SLDEM2015

SLOPE


 
GLOBAL TILES
 
 
   
FLOAT_IMG JP2 FLOAT_IMG JP2