USGS Moon Relief
Usage
You access the Moon LOLA relief grid by specifying the special name
@moon_relief[_rru[_reg]]
This grid contains observed relief measured via altimetry. The following codes for the optional rru and reg are supported (dimensions are listed for pixel-registered grids; gridline-registered grids increment dimensions by one):
Code
Dimensions
Reg
Size
Description
01d
360 x 180
g,p
122 KB
1 arc degree Moon relief (LOLA @ 168 km)
30m
720 x 360
g,p
423 KB
30 arc minute Moon relief (LOLA @ 84 km)
20m
1080 x 540
g,p
897 KB
20 arc minute Moon relief (LOLA @ 56 km)
15m
1440 x 720
g,p
1.5 MB
15 arc minute Moon relief (LOLA @ 42 km)
10m
2160 x 1080
g,p
3.3 MB
10 arc minute Moon relief (LOLA @ 28 km)
06m
3600 x 1800
g,p
8.5 MB
6 arc minute Moon relief (LOLA @ 17 km)
05m
4320 x 2160
g,p
12 MB
5 arc minute Moon relief (LOLA @ 16 km)
04m
5400 x 2700
g,p
18 MB
4 arc minute Moon relief (LOLA @ 11 km)
03m
7200 x 3600
g,p
31 MB
3 arc minute Moon relief (LOLA @ 8.4 km)
02m
10800 x 5400
g,p
68 MB
2 arc minute Moon relief (LOLA @ 5.6 km)
01m
21600 x 10800
g,p
253 MB
1 arc minute Moon relief (LOLA @ 2.8 km)
30s
43200 x 21600
g,p
937 MB
30 arc second Moon relief (LOLA @ 1.4 km)
15s
86400 x 43200
g,p
3.3 GB
15 arc second Moon relief (LOLA @ 0.7 km)
14s
106694 x 53347
p
3.9 GB
14.06… arc second Moon relief (LOLA original)
Note that resolutions 05m and higher are tiled. See Remote Data Sets for more information.
See GMT remote dataset usage for when resolution codes are optional or required.
All of these data will, when downloaded, be placed in your ~/.gmt/server directory, with
the moon_relief files being placed in an moon/moon_relief sub-directory. If you
do not specify a CPT then the default CPT for this dataset (the GMT master @moon_relief CPT) will be used.
Technical Information
As you see, the 15s and lower resolutions are all derivatives of USGS’ 14.0625 arc-second Lunar_LRO_LOLA_Global_LDEM_118m_Mar2014.tif (Mazarico_et_al., 2013). We have downsampled it via Cartesian Gaussian filtering to prevent aliasing while preserving the latitude-dependent resolution in the original 14.0625 arc sec grid. The full (6 sigma) filter-widths are indicated in parenthesis. Almost all grids are available in both gridline- and pixel-registered formats except the original pixel-registered grid at 14.0625 arc-seconds resolution (here called @moon_relief_14s). Data resolution is 0.5 meter.