Dendritic network models: Improving isoscapes and quantifying influence of landscape and in‐stream processes on strontium isotopes in rivers
| Autor: | Daniel E. Schindler, Carrie K. Jensen, Diego P. Fernandez, Jeff P. Hollenbeck, Sean R. Brennan, Christian E. Torgersen |
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| Rok vydání: | 2016 |
| Předmět: |
Hydrology
Provenance 010504 meteorology & atmospheric sciences Isoscapes Earth science Biogeochemistry Geostatistics 010502 geochemistry & geophysics 01 natural sciences Field (geography) Isotopes of strontium Geophysics General Earth and Planetary Sciences Geology 0105 earth and related environmental sciences Network model |
| Zdroj: | Geophysical Research Letters. 43:5043-5051 |
| ISSN: | 1944-8007 0094-8276 |
| Popis: | A critical challenge for the Earth sciences is to trace the transport and flux of matter within and among aquatic, terrestrial, and atmospheric systems. Robust descriptions of isotopic patterns across space and time, called “isoscapes,” form the basis of a rapidly growing and wide-ranging body of research aimed at quantifying connectivity within and among Earth's systems. However, isoscapes of rivers have been limited by conventional Euclidean approaches in geostatistics and the lack of a quantitative framework to apportion the influence of processes driven by landscape features versus in-stream phenomena. Here we demonstrate how dendritic network models substantially improve the accuracy of isoscapes of strontium isotopes and partition the influence of hydrologic transport versus local geologic features on strontium isotope ratios in a large Alaska river. This work illustrates the analytical power of dendritic network models for the field of isotope biogeochemistry, particularly for provenance studies of modern and ancient animals. |
| Databáze: | OpenAIRE |
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