Gunnar Nützmann
Humboldt University of Berlin
30 Papers
91 Citations
Gunnar Nützmann is an academic researcher from Humboldt University of Berlin. The author has contributed to research in topics: Groundwater & Groundwater flow. The author has an hindex of 9, co-authored 30 publications. Previous affiliations of Gunnar Nützmann include Leibniz Institute for Neurobiology & Leibniz Association.
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Papers
A 3D analysis algorithm to improve interpretation of heat pulse sensor results for the determination of small-scale flow directions and velocities in the hyporheic zone
Lisa Angermann,Lisa Angermann,Lisa Angermann,Jörg Lewandowski,Jan H. Fleckenstein,Jan H. Fleckenstein,Gunnar Nützmann,Gunnar Nützmann +7 more
TL;DR: In this paper, a short heat pulse is injected into the sediment by a point source and its propagation is detected by up to 24 temperature sensors arranged cylindrically around the heater.
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Coupled groundwater flow and heat transport simulation for estimating transient aquifer-stream exchange at the lowland River Spree (Germany)
TL;DR: In this article, a 2D flow and heat transport model was used along a transect of 12 piezometers to estimate mass fluxes across the aquifer-surface water interfaces.
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Investigating Groundwater-Lake Interactions by Hydraulic Heads and a Water Balance
TL;DR: In this article, the authors used both spatially variable hydraulic-head data and meteorological data to estimate groundwater input by lacustrine groundwater discharge, and lake water output through infiltration.
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Inconsistent hydrological trends do not necessarily imply spatially heterogeneous drivers
Gunnar Lischeid,Ralf Dannowski,Knut Kaiser,Gunnar Nützmann,Gunnar Nützmann,Jörg Steidl,Peter Stüve +6 more
TL;DR: In this paper, local effects were subtracted from time series of lake water level and groundwater head covering a 28-year period in Northeast Germany, and the apparent inconsistent behavior could be ascribed to different degrees of low-pass filtering of the groundwater recharge signal.
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Fate of pharmaceutical micro-pollutants in Lake Tegel (Berlin, Germany): the impact of lake-specific mechanisms
Sebastian Schimmelpfennig,Georgiy Kirillin,Christof Engelhardt,Uwe Dünnbier,Gunnar Nützmann,Gunnar Nützmann +5 more
TL;DR: In this paper, the spatial horizontal and vertical distribution and elimination of these three pharmaceuticals are quantified with the help of high-resolution sampling in Lake Tegel and its entire major in and outflows monthly mass balances are modelled and substance-specific zero-order elimination rates are derived Diclofenac showed the strongest elimination and revealed a significant seasonality with 50% elimination in winter, and 95% in summer Elimination of carbamazepine was about 40%; sulfamethoxazole did not degrade at determinable rates.
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