The Role of Anomalous Transport in Long-Term, Stream Water Chemistry Variability

Marco Dentz; James W. Kirchner; Erwin Zehe; Brian Berkowitz

doi:10.1029/2023GL104207

The Role of Anomalous Transport in Long-Term, Stream Water Chemistry Variability

Marco Dentz, James W. Kirchner, Erwin Zehe, Brian Berkowitz

Department of Earth and Planetary Sciences

Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the occurrence of anomalous (non-Fickian) transport in an hydrological catchment system at kilometer scales and over a 36-year period. Using spectral analysis, we examine the fluctuation scaling of long-term time series measurements of a natural passive tracer (chloride), for rainfall and runoff. The scaling behavior can be described by a continuous time random walk (CTRW) based on a power-law distribution of transition times, which indicates two distinct power-law regimes in the distribution of overall travel times in the catchment. The CTRW provides a framework for assessing anomalous transport in catchments and its implications for water quality fluctuations.

Original language	English
Article number	e2023GL104207
Number of pages	8
Journal	Geophysical Research Letters
Volume	50
Issue number	14
Early online date	17 Jul 2023
DOIs	https://doi.org/10.1029/2023GL104207
State	Published - 28 Jul 2023

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

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10.1029/2023GL104207License: CC BY

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abstract = "We investigate the occurrence of anomalous (non-Fickian) transport in an hydrological catchment system at kilometer scales and over a 36-year period. Using spectral analysis, we examine the fluctuation scaling of long-term time series measurements of a natural passive tracer (chloride), for rainfall and runoff. The scaling behavior can be described by a continuous time random walk (CTRW) based on a power-law distribution of transition times, which indicates two distinct power-law regimes in the distribution of overall travel times in the catchment. The CTRW provides a framework for assessing anomalous transport in catchments and its implications for water quality fluctuations.",

author = "Marco Dentz and Kirchner, {James W.} and Erwin Zehe and Brian Berkowitz",

note = "MD and BB gratefully acknowledge support by, respectively, the Spanish Ministry of Science and Innovation through the project HydroPore (PID2019-106887GB-C31) and the Israel Science Foundation (Grant 1008/20). EZ and BB gratefully acknowledge support through ViTamins project, funded by the Volkswagen Foundation (AZ 9B192).",

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AU - Dentz, Marco

AU - Kirchner, James W.

AU - Zehe, Erwin

AU - Berkowitz, Brian

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Y1 - 2023/7/28

N2 - We investigate the occurrence of anomalous (non-Fickian) transport in an hydrological catchment system at kilometer scales and over a 36-year period. Using spectral analysis, we examine the fluctuation scaling of long-term time series measurements of a natural passive tracer (chloride), for rainfall and runoff. The scaling behavior can be described by a continuous time random walk (CTRW) based on a power-law distribution of transition times, which indicates two distinct power-law regimes in the distribution of overall travel times in the catchment. The CTRW provides a framework for assessing anomalous transport in catchments and its implications for water quality fluctuations.

AB - We investigate the occurrence of anomalous (non-Fickian) transport in an hydrological catchment system at kilometer scales and over a 36-year period. Using spectral analysis, we examine the fluctuation scaling of long-term time series measurements of a natural passive tracer (chloride), for rainfall and runoff. The scaling behavior can be described by a continuous time random walk (CTRW) based on a power-law distribution of transition times, which indicates two distinct power-law regimes in the distribution of overall travel times in the catchment. The CTRW provides a framework for assessing anomalous transport in catchments and its implications for water quality fluctuations.

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U2 - 10.1029/2023GL104207

DO - 10.1029/2023GL104207

M3 - مقالة

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JO - Geophysical Research Letters

JF - Geophysical Research Letters

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The Role of Anomalous Transport in Long-Term, Stream Water Chemistry Variability

Abstract

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