Attribute: Nature of surface


Acronym: NATSUR

Code: 113

Attribute Type: L

ENC Condition:

# For SBDARE objects, at least one of attributes NATQUA or NATSUR must be encoded.

Expected input:

ID Meaning INT 1 M-4
1 mud IJ 2,20
      
2 clay IJ 3
      
3 silt IJ 4
      
4 sand IC 6, IJ 1,20 312.2;
5 stone IC 7, IJ 5,20 312.2; 425.5-6;
6 gravel IJ 6,20
      
7 pebbles IJ 7
      
8 cobbles IJ 8
      
9 rock IJ 9,21 426.2
10 marsh
      
      
11 lava
      
      
12 snow
      
      
13 ice
      
      
14 coral IJ 10,22 425.5; 426.3;
15 swamp
      
      
16 bog/moor
      
      
17 shells IJ 11 425.5-6;
18 boulder
      
      

Remarks: The attribute ‘nature of surface’ encodes the general nature of the material of which the land surface or the sea bed is composed.
Mixed bottom: where the seabed comprises a mixture of material, the main constituent is given first e.g. fine sand with mud and shells would be indicated as 4,1,17.
Mud, sand, stone, rock are terms used for the general description.
Clay, silt, gravel, pebbles, cobbles are more specific terms related to particle size.

Object Classes that use NATSUR