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The volume and mean...
The volume and mean depth of Earth's lakes
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Cael, B. B. (author)
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Heathcote, A. J. (author)
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- Seekell, David (author)
- Umeå universitet,Arktiskt centrum vid Umeå universitet (Arcum),Institutionen för ekologi, miljö och geovetenskap,Climate Impacts Research Centre, Umeå University, Abisko, Sweden,Arcum
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(creator_code:org_t)
- 2017
- 2017
- English.
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In: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 44:1, s. 209-218
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Global lake volume estimates are scarce, highly variable, and poorly documented. We developed a rigorous method for estimating global lake depth and volume based on the Hurst coefficient of Earth's surface, which provides a mechanistic connection between lake area and volume. Volume-area scaling based on the Hurst coefficient is accurate and consistent when applied to lake data sets spanning diverse regions. We applied these relationships to a global lake area census to estimate global lake volume and depth. The volume of Earth's lakes is 199,000km(3) (95% confidence interval 196,000-202,000km(3)). This volume is in the range of historical estimates (166,000-280,000km(3)), but the overall mean depth of 41.8m (95% CI 41.2-42.4m) is significantly lower than previous estimates (62-151m). These results highlight and constrain the relative scarcity of lake waters in the hydrosphere and have implications for the role of lakes in global biogeochemical cycles.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- limnology
- topograhy
- scaling
- volume
- mean depth
Publication and Content Type
- ref (subject category)
- art (subject category)
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