USGS Pluto Relief
Usage
You access the global New Horizon relief grid by specifying the special name
@pluto_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
71 KB
1 arc degree Pluto relief (NH @ 59 km)
30m
720 x 360
g,p
220 KB
30 arc minute Pluto relief (NH @ 29 km)
20m
1080 x 540
g,p
452 KB
20 arc minute Pluto relief (NH @ 20 km)
15m
1440 x 720
g,p
774 KB
15 arc minute Pluto relief (NH @ 15 km)
10m
2160 x 1080
g,p
1.6 MB
10 arc minute Pluto relief (NH @ 9.8 km)
06m
3600 x 1800
g,p
4.2 MB
6 arc minute Pluto relief (NH @ 5.9 km)
05m
4320 x 2160
g,p
6.0 MB
5 arc minute Pluto relief (NH @ 4.9 km)
04m
5400 x 2700
g,p
9.0 MB
4 arc minute Pluto relief (NH @ 3.3 km)
03m
7200 x 3600
g,p
15 MB
3 arc minute Pluto relief (NH @ 2.9 km)
02m
10800 x 5400
g,p
33 MB
2 arc minute Pluto relief (NH @ 2.0 km)
01m
21600 x 10800
g,p
122 MB
1 arc minute Pluto relief (NH @ 1.0 km)
52s
24888 x 12444
p
124 MB
52.07… arc second Pluto relief (NH 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 pluto_relief files being placed in an pluto/pluto_relief sub-directory. If you
do not specify a CPT then the default CPT for this dataset (the GMT master @pluto_relief CPT) will be used.
Technical Information
As you see, the 01m and lower resolutions are all derivatives of USGS’ 52.0732883317 arc-second Pluto_NewHorizons_Global_DEM_300m_Jul2017_16bit.tif (Moore_et_al., 2016). We have downsampled it via Cartesian Gaussian filtering to prevent aliasing while preserving the latitude-dependent resolution in the original 52.0732883317 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 52.0732883317 arc-seconds resolution (here called @pluto_relief_52s). Data resolution is 0.25 meter.