Copyright © 2002, IIASA & RAS
All Rights Reserved
Source
Koronkevitch,
N.I., Land Resources of Russia CD-ROM
Technical Description
All of
the hydrology coverages were created by digitizing from paper maps taken
from: The World Atlas of Snow and Ice Resources, 1997. Institute of Geography,
Russian Academy of Sciences, Moscow, Russia. The scale of these source
maps ranges from 1:20 million to 1:40 million. Polygons were then assigned
attributes based on the classes used in the legends from the paper maps.
The Map Dates
of Snow Destruction was updated by IPF
at TU Wien, to correct some mistakes in the previous version and
improve the overall spatial accuracy.
Coverage Definitions
| Coverage | Data Type | Items | Item Description |
| Total Runoff | Poly |
min |
Minimum total
runoff (mm) |
| Runoff Variation | Poly |
min |
Minimum Variation Maximum Variation Midpoint Mean (used for mapping) |
| Underground Runoff | Poly | min-max, mean |
Minimum-Maximum
Range (mm) Mean value (mm ) |
|
Snow |
Poly | mean_dates exact |
Average
dates Exact date for mapping |
| Snow Destruction | Poly |
mean_dates |
Average
dates Exact date for mapping |
| Snow Storage | Poly | max_we_of_ exact |
Maximum
Snow Storage (mm) Exact value for mapping |
| Temporal Variability | Poly |
var_coeff_ |
Variability
coefficient Exact value for mapping |
| Snow Redistribution | Poly | max_vol_of exact |
m3
per 1m length Exact value for mapping |
| Snow Melt Runoff | Poly | melt_runof exact |
Mean
values (%) Exact value for mapping |
| Freezing Potential | Poly |
max_pos_fr |
g/cm2 Exact value for mapping |
Attribute Definitions
For detailed descriptions of each of these coverages, please refer to
the description for hydrology.
