7/24/2019 Principles of Mapping Scale for Landslide
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MAPPING SCALE[APPLICABILTY OF MAPS]
GEO-INFO FOR SPATIAL PLANNING AND DISASTER RISK MANAGEMENT Page
1By: Rini Meiarti (Pompon Watershed Team) [email protected]
PRINCIPLE OF MAPPING SCALE PARTICULARLY FOR LANDSLIDE
INTRODUCTION:
Determining of base map particularly for landslide
susceptibility, hazard,
vulnerability, and risk assessment; morpho conservation; and
geology
geomorphology depends on scale of analysis. Scale of analysis on
the output of
mapping scale. Furthermore, mapping scale emphasizes area of
research location
(m2).
1. Determining the smallest polygon area by Sutanto, 1996:
The formula could be defined by as follow below:
Table 1shows the smallest polygon area in each mapping
scale.
Table 1. Principle of determining smallest polygon
area in each mapping scale
No ScaleSmallest polygon area
ha m2
1 1:5,000 0.125 1,250
2 1:10,000 0.25 2,500
3 1:15,000 0.375 3,750
4 1:25,000 0.625 6,250
5 1:50,000 1.25 12,500
6 1:100,000 2.5 25,000
7 1:150,000 3.75 37,500
8 1:200,000 5 50,000
9 1:250,000 6.25 62,500Source: Principle of Remote Sensing by
Sutanto year 1996,
modified
Table 2shows the range area between levels mapping scale.
Table 2. Applicability of mapping scale principle related
methods of landslide
No Scale class ScaleRange of smallest
polygon area (m2)
1 Large > 1:10,000 > 2,500
2 Medium 25,000 - 50,000 6,250 - 12,500
3 Regional > 1:100,000 > 25,000
Source: Multi - hazards risk assessment by van Westen year 2011,
modified
0,5 x 0,5 x denominator of mapping scale
7/24/2019 Principles of Mapping Scale for Landslide
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MAPPING SCALE[APPLICABILTY OF MAPS]
GEO-INFO FOR SPATIAL PLANNING AND DISASTER RISK MANAGEMENT Page
2By: Rini Meiarti (Pompon Watershed Team) [email protected]
2. Correspondence of Mapping Scale by Tobler, 1959:
Map Scale = Spatial Resolution (in meter) * 2 * 1,000
= 1 x 2 x 1,000
= 2,000 or 1:2,000
Table 3shows the establishment of relation between spatial
resolution and
mapping scale.
Table 3. Correspondence between mapping scale and spatial
resolution
No Mappingscale
Inmeter
Spatial
resolution/Pixel value(m)
Related satellite imagery
Type P/M
1 1:1,000 1 0.5 QuickBird P = 0.6
Worldview-1 P = 0.5
GeoEye-1 P = 0.4
2 1:2,000 2 1 Ikonos P = 1
GeoEye M = 1.65
Worldview-2 M = 1.8
3 1:5,000 5 2.5 QuickBird M = 2.4 and 2.8
SPOT-5 P = 2.5 - 5
Formosat-2 P = 2
ALOS P = 2.5
4 1:10,000 10 5 SPOT-5 P = 2.5 - 5
Ikonos M = 4
Aerial
Photograph
(result of UAV) P = 25
5 1:15,000 15 7.5 Formosat-2 M = 8
6 1:25,000 25 12.5 SPOT-5 M = 10
Landsat TM P = 15
ALOS M = 10
ASTER VNIR = 15
7 1:50,000 50 25 Landsat TM M = 30
Aster SVVIR = 30
8 1:100,000 100 50 Landsat TM M = 30
Source: Automation and Cartography by W. R. Tobler year 1959
REFERENCES:
Sutanto. 1996. Penginderaan Jauh Dasar. Yogyakarta: Gadjah Mada
University
Press.
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MAPPING SCALE[APPLICABILTY OF MAPS]
GEO-INFO FOR SPATIAL PLANNING AND DISASTER RISK MANAGEMENT Page
3By: Rini Meiarti (Pompon Watershed Team) [email protected]
Tobler, W. R. 1959. Automation and Cartography. California:
Pamphlet.
van Westen, C. J., D. Alkema, M. C. J. Damen, N. Kerle, and N.
C. Kingma.2011. Guide book: Multi hazards risk assessment. Enschede
Netherland:
ITC. p: 71 72.
