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Spring: velocity (m/s)
Summer: velocity (m/s)
Spring: k1 (1/s)
Summer: k1 (1/s)
1
0.1
0.01
0.001
0.0001
2
3
4
6 7
Site number
9 0 1 4
Fig. 5 Velocity and exchange coefficient for each site at both summer and early spring conditions
6 Conclusions
We have performed a stream transport characterisation of several streams within a
unique watershed in Iceland as part of a larger stream metabolism study. Results
have indicated that: (1) intrinsic exchange rate between main stream and transient
storage zones scales with flow velocity; (2) the fractional transient storage volume
scales inversely with flow rate; (3) stream transient storage volume can change
significantly over the growing season, especially if submerged vascular plants are
present and (4) retention time within the transient storage zone can increase by up to
100% over the growing season.
References
Arnason B, Theodorsson P, Bjornsson S, Saemundsson K (1969) Hengill, a high temperature
thermal area in Iceland. Bull Volcanol 33:245-259
Einarsson MA (1984) World survey of climatology. In: van Loon H (ed) Climate of the oceans,
vol 15. Elsevier, Amsterdam, pp 673-697
Ensign SH, Doyle MW (2005) In-channel transient storage and associated nutrient retention:
evidence from experimental manipulations. Limnol Oceanogr 50:1740-1751
Franzson H et al (2005) In: Proceedings world geothermal congress, Antalya, Turkey, pp 1-7
Friberg N, Dybkjaer JB, Olafsson JS, Gislason GM, Larsen SE, Lauridsen TL (2009) Relationships
between structure and function in streams contrasting in temperature. Freshw Biol
54:2051-2068
Hoffman JD (1992) Numerical methods for engineers and scientists. McGraw-Hill, New York
Lagarias JC, Reeds JA, Wright MH, Wright PE (1998) Convergence properties of the Nelder-
Mead simplex method in low dimensions. SIAM J Optim 9(1):112-147
Manson JR, Wallis SG (1995) An accurate numerical algorithm for advective transport. Commun
Numer Methods Eng 11:1039-1045
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