Organotins: their analysis and assessment in the Elbe river system, Northern Germany

1994 ◽  
Vol 350 (1-2) ◽  
pp. 77-84 ◽  
Author(s):  
R. -D. Wilken ◽  
J. Kuballa ◽  
E. Jantzen
Keyword(s):  
River System ◽  
Northern Germany ◽  
Elbe River ◽  
The Elbe River

scholarly journals The effectiveness of polder systems on peak discharge capping of floods along the middle reaches of the Elbe River in Germany

2007 ◽  
Vol 4 (1) ◽  
pp. 211-241 ◽  
Author(s):  
S. Huang ◽  
J. Rauberg ◽  
H. Apel ◽  
K.-E. Lindenschmidt
Keyword(s):  
Spatial Differentiation ◽  
River System ◽  
Peak Discharge ◽  
Computational Time ◽  
Elbe River ◽  
Flood Peak ◽  
Monte Carlo Techniques ◽  
Main River ◽  
The Elbe River ◽  
Computational Resources

Abstract. In flood modelling, many one-dimensional (1-D) hydrodynamic models are too restricted in capturing the spatial differentiation of processes within a polder or system of polders and two-dimensional (2-D) models are very demanding in data requirements and computational resources. The latter is an important consideration when uncertainty analyses using the Monte Carlo techniques are to complement the modelling exercises. This paper describes the development of a quasi-2-D modeling approach, which still calculates the dynamic wave in 1-D but the discretisation of the computational units is in 2-D, allowing a better spatial representation of the flow in polders and avoiding large additional expenditure on data pre-processing and computational time. The model DYNHYD (1-D hydrodynamics) from the WASP5 modeling package was used as a basis for the simulations and extended to incorporate the quasi-2-D approach. A local sensitive analysis shows the sensitivity of parameters and boundary conditions on the filling volume of polders and capping of the peak discharge in the main river system. Two flood events on the Elbe River, Germany were used to calibrate and test the model. The results show a good capping effect on the flood peak by the proposed systems. The effect of capping reduces as the flood wave propagates downstream from the polders (up to 0.5 cm of capping is lost for each additional kilometer from the polders).

scholarly journals The effectiveness of polder systems on peak discharge capping of floods along the middle reaches of the Elbe River in Germany

2007 ◽  
Vol 11 (4) ◽  
pp. 1391-1401 ◽  
Author(s):  
S. Huang ◽  
J. Rauberg ◽  
H. Apel ◽  
M. Disse ◽  
K.-E. Lindenschmidt
Keyword(s):  
Spatial Differentiation ◽  
River System ◽  
Peak Discharge ◽  
Computational Time ◽  
Elbe River ◽  
Flood Peak ◽  
Monte Carlo Techniques ◽  
Main River ◽  
The Elbe River ◽  
Computational Resources

Abstract. In flood modelling, many one-dimensional (1-D) hydrodynamic models are too restricted in capturing the spatial differentiation of processes within a polder or system of polders and two-dimensional (2-D) models are very demanding in data requirements and computational resources. The latter is an important consideration when uncertainty analyses using the Monte Carlo techniques are to complement the modelling exercises. This paper describes the development of a quasi-2-D modeling approach, which still calculates the dynamic wave in 1-D but the discretisation of the computational units are in 2-D, allowing a better spatial representation of the flow in polders and avoiding large additional expenditure on data pre-processing and computational time. The model DYNHYD (1-D hydrodynamics) from the WASP5 modeling package was used as a basis for the simulations and extended to incorporate the quasi-2-D approach. A local sensitivity analysis shows the sensitivity of parameters and boundary conditions on the filling volume of polders and capping of the peak discharge in the main river system. Two flood events on the Elbe River, Germany were used to calibrate and test the model. The results show a good capping effect on the flood peak by the proposed systems. The effect of capping reduces as the flood wave propagates down stream from the polders (up to 0.5 cm of capping is decreased for each additional kilometer from the polder).

Morphological Variation in the Burhot (Lota lota) and Recognition of the Subspecies: A Review

1970 ◽  
Vol 27 (10) ◽  
pp. 1757-1765 ◽  
Author(s):  
Karel Pivnička
Keyword(s):  
New England ◽  
Western Europe ◽  
River System ◽  
The United States ◽  
Danube River ◽  
Elbe River ◽  
Caudal Peduncle ◽  
Volga River ◽  
Lota Lota ◽  
The Elbe River

A review of the morphometric and meristic variations in 893 specimens of the burbot (Lota lota) from 18 freshwater areas representing the range of the species, showed that Lota lota lacustris (= maculosa), with a short, high caudal peduncle and low meristic values may be distinguished from Lota lota lota, with a long, low caudal peduncle and high meristic values. Lota l. lota occurs from the Volga River system through Siberia and Alaska to the Mackenzie River system in Canada. The populations from the Elbe River and the Danube River are on the periphery of this subspecies, to which it clearly belongs. Lota l. lacustris occurs in southernmost Canada, the United States, and western Europe. Both Lota l. leptura (Hubbs and Schultz, 1941) and Lota l. kamensis (Markun, 1936) are synonyms of Lota l. lota (Linnaeus, 1758).Clinal variations in the means for various characters of the species were found as follows. All meristic values and length of the caudal peduncle as a percentage of standard body length, in general, increased eastward from western Europe as far as 120°E and then decreased toward New England. Predorsal and preanal lengths generally increased eastward from western Europe to New England. The following generally decreased from western Europe eastward to 120°E and then increased toward New England: head length, interorbital width, postpectoral length, and depth of caudal peduncle as a percentage of standard length; depth of caudal peduncle as a percentage of its length; and postpectoral length as a percentage of predorsal length.

scholarly journals Geostatistical classification of dynamics of water quality changes in the Elbe river basin

Geografie ◽  
2005 ◽  
Vol 110 (1) ◽  
pp. 15-31
Author(s):  
Jakub Langhammer
Keyword(s):  
Water Quality ◽  
River Basin ◽  
River System ◽  
Quality Changes ◽  
Elbe River ◽  
Critical Areas ◽  
Emission Volume ◽  
Elbe River Basin ◽  
The Elbe River ◽  
And Control

With regard to the water quality changes, the area of the Czech part of the Elbe river basin is extraordinarily dynamic. In the 20th century it experienced an enormous increase of load of pollution. Since the beginning of the 1990's due to the political and economical changes, we have witnessed a particularly intensive decrease in the emission volume and a related increase in water quality of watercourses. However, positive changes in the pollution load balance have occurred mainly in the biggest watercourses and these changes have not been accompanied by similar development in the whole river system. Using a newly created classification methodology the basic models of dynamics of water quality changes in the Elbe river basin have been derived. Based on GIS geostatistical analysis, regions with analogous water quality development trends have been defined for selected parameters and critical areas have been identified. It has become apparent that the prevailing part of the Elbe river basin has been experiencing a gradual increase in pollution. In addition, after a previous decrease, a number of watercourses experienced a recurrence of the increase in load. These areas are priorities for further development and control of surface water protection against pollution.

Instream coliform gradients in the Holtemme, a small headwater stream in the Elbe River Basin, Northern Germany

2017 ◽  
Vol 11 (3) ◽  
pp. 544-553 ◽  
Author(s):  
Daniel Karthe ◽  
Pei-Ying Lin ◽  
Katja Westphal
Keyword(s):  
River Basin ◽  
Headwater Stream ◽  
Northern Germany ◽  
Elbe River ◽  
Elbe River Basin ◽  
The Elbe River

Age and growth of European eels (Anguilla anguilla) in the Elbe River system in Germany

2015 ◽  
Vol 164 ◽  
pp. 278-285 ◽  
Author(s):  
Janek Simon
Keyword(s):  
Anguilla Anguilla ◽  
River System ◽  
Age And Growth ◽  
Elbe River ◽  
The Elbe River

Environmental behavior and potential driving force of bisphenol A in the Elbe River: A long-term trend study

2020 ◽  
pp. 143251
Author(s):  
Zhenyu Huang ◽  
Pei Hua ◽  
Zhenyu Wang ◽  
Ruifei Li ◽  
Liang Dong ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Driving Force ◽  
Environmental Behavior ◽  
Elbe River ◽  
Trend Study ◽  
Term Trend ◽  
The Elbe River ◽  
Long Term Trend

scholarly journals Two temperature optima of methane production in a typical soil of the Elbe river marshland

2006 ◽  
Vol 22 (2) ◽  
pp. 145-153 ◽  
Author(s):  
Dirk Wagner ◽  
Eva-Maria Pfeiffer
Keyword(s):  
Methane Production ◽  
Elbe River ◽  
The Elbe River ◽  
Temperature Optima ◽  
Two Temperature ◽  
Typical Soil

The occurrence of xenoestrogens in the Elbe river and the North Sea

Chemosphere ◽  
2001 ◽  
Vol 45 (3) ◽  
pp. 245-259 ◽  
Author(s):  
O.P Heemken ◽  
H Reincke ◽  
B Stachel ◽  
N Theobald
Keyword(s):  
North Sea ◽  
Elbe River ◽  
The North ◽  
The North Sea ◽  
The Elbe River
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