Inwentaryzacja obiektów krenologicznych dorzecza Odry
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Date
2009
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Wydawnictwo Poznańskiego Towarzystwa Przyjaciół Nauk
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Abstract
On the basis of analysis of hydrographie maps at a scale of 1 : 50 000 an inventory of crenological objects
located in the Odra River basin has been made. Altogether 393 map sheets cover the whole area. The studies objects
were found on 159 sheets. The obtained data originate from field works or mappings carried out in the years
1998-2005. In total 2611 objects were recorded; most of them are perennial springs (1309), then seepage areas
(568), bog-springs (336), intaked perennial springs (129), groups of springs (111), periodical springs (87), mineral
springs (66) and observed springs (5). Basing on the output of individual objects the total discharge has been
estimated at 1.645 cubic meters per second, that is comparable with the mean annual discharge of such rivers as
Lutynia, Mogilnica and Ołobok. Moreover, two maps have been compiled: the first one presents the number of
crenological objects on respective sheets, while the other illustrates the summed up output on these sheets. From
the point of view of the number of the objects a clear difference between the mountain areas and lowlands can bee
seen, however, the difference is smaller if consider the output of the objects. The most abundant springs reach an
output of about 50 dm3 • s"1, while only a dozen exceeds 20 dm3 • s '. The sum of 10 most abundant springs makes as
many as 23% of the total output of all studied objects. It has to be noticed that as many as 76% of all objects have
very low output, that means less than 0.5 dm3 • s-1. Realized inventory of springs seems to be useful, since it makes
possible to record future changes in the number and output of crenological objects on a large area.
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Citation
Badania Fizjograficzne, Seria A, Tom 60, 2009, s. 95-106
Seria
Seria A - Geografia Fizyczna TOM 60;
ISBN
978-83-7654-057-3
ISSN
0067-2807