Suspended sediment in a high-Arctic river: An appraisal of flux estimation methods

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Standard

Suspended sediment in a high-Arctic river : An appraisal of flux estimation methods. / Ladegaard-Pedersen, Pernille; Sigsgaard, Charlotte; Kroon, Aart; Abermann, Jakob; Skov, Kirstine; Elberling, Bo.

I: Science of the Total Environment, Bind 580, 15.02.2017, s. 582-592.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Ladegaard-Pedersen, P, Sigsgaard, C, Kroon, A, Abermann, J, Skov, K & Elberling, B 2017, 'Suspended sediment in a high-Arctic river: An appraisal of flux estimation methods', Science of the Total Environment, bind 580, s. 582-592. https://doi.org/10.1016/j.scitotenv.2016.12.006

APA

Ladegaard-Pedersen, P., Sigsgaard, C., Kroon, A., Abermann, J., Skov, K., & Elberling, B. (2017). Suspended sediment in a high-Arctic river: An appraisal of flux estimation methods. Science of the Total Environment, 580, 582-592. https://doi.org/10.1016/j.scitotenv.2016.12.006

CBE

Ladegaard-Pedersen P, Sigsgaard C, Kroon A, Abermann J, Skov K, Elberling B. 2017. Suspended sediment in a high-Arctic river: An appraisal of flux estimation methods. Science of the Total Environment. 580:582-592. https://doi.org/10.1016/j.scitotenv.2016.12.006

MLA

Ladegaard-Pedersen, Pernille o.a.. "Suspended sediment in a high-Arctic river: An appraisal of flux estimation methods". Science of the Total Environment. 2017, 580. 582-592. https://doi.org/10.1016/j.scitotenv.2016.12.006

Vancouver

Ladegaard-Pedersen P, Sigsgaard C, Kroon A, Abermann J, Skov K, Elberling B. Suspended sediment in a high-Arctic river: An appraisal of flux estimation methods. Science of the Total Environment. 2017 feb 15;580:582-592. https://doi.org/10.1016/j.scitotenv.2016.12.006

Author

Ladegaard-Pedersen, Pernille ; Sigsgaard, Charlotte ; Kroon, Aart ; Abermann, Jakob ; Skov, Kirstine ; Elberling, Bo. / Suspended sediment in a high-Arctic river : An appraisal of flux estimation methods. I: Science of the Total Environment. 2017 ; Bind 580. s. 582-592.

Bibtex

@article{a813c4679b6d4783b57c6f9f3511abba,
title = "Suspended sediment in a high-Arctic river: An appraisal of flux estimation methods",
abstract = "Quantifying fluxes of water, sediment and dissolved compounds through Arctic rivers is important for linking the glacial, terrestrial and marine ecosystems and to quantify the impact of a warming climate. The quantification of fluxes is not trivial. This study uses a 8-years data set (2005-2012) of daily measurements from the high-Artic Zackenberg River in Northeast Greenland to estimate annual suspended sediment fluxes based on four commonly used methods: M1) is the discharge weighted mean and uses direct measurements, while M2-M4) are one uncorrected and two bias corrected rating curves extrapolating a continuous concentration trace from measured values. All methods are tested on complete and reduced datasets. The average annual runoff in the period 2005-2012 was 190 +/- 25 mio center dot m(3) y(-1). The different estimation methods gave a range of average annual suspended sediment fluxes between 43,000 10,000 t y(-1) and 61,000 16,000 t y(-1). Extreme events with high discharges had a mean duration of 1 day. The average suspended sediment flux during extreme events was 17,000 +/- 5000 t y(-1), which constitutes a year-to-year variation of 20-37{\%} of the total annual flux. The most accurate sampling strategy was bi-daily sampling together with a sampling frequency of 2 h during extreme events. The most consistent estimation method was an uncorrected rating curve of bi-daily measurements (M2), combined with a linear interpolation of extreme event fluxes. Sampling can be reduced to every fourth day, with both method-agreements and accuracies",
keywords = "Arctic river discharge, Annual suspended sediment flux, Q/h relation, Estimation methods, Extreme events, DISSOLVED ORGANIC-CARBON, TRACE-ELEMENT, METHODOLOGICAL CONSIDERATIONS, NORTHEAST GREENLAND, SAMPLING FREQUENCY, WATER DISCHARGE, NUTRIENT FLUXES, RATING CURVES, TRANSPORT, PERMAFROST",
author = "Pernille Ladegaard-Pedersen and Charlotte Sigsgaard and Aart Kroon and Jakob Abermann and Kirstine Skov and Bo Elberling",
year = "2017",
month = "2",
day = "15",
doi = "10.1016/j.scitotenv.2016.12.006",
language = "English",
volume = "580",
pages = "582--592",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Suspended sediment in a high-Arctic river

T2 - An appraisal of flux estimation methods

AU - Ladegaard-Pedersen, Pernille

AU - Sigsgaard, Charlotte

AU - Kroon, Aart

AU - Abermann, Jakob

AU - Skov, Kirstine

AU - Elberling, Bo

PY - 2017/2/15

Y1 - 2017/2/15

N2 - Quantifying fluxes of water, sediment and dissolved compounds through Arctic rivers is important for linking the glacial, terrestrial and marine ecosystems and to quantify the impact of a warming climate. The quantification of fluxes is not trivial. This study uses a 8-years data set (2005-2012) of daily measurements from the high-Artic Zackenberg River in Northeast Greenland to estimate annual suspended sediment fluxes based on four commonly used methods: M1) is the discharge weighted mean and uses direct measurements, while M2-M4) are one uncorrected and two bias corrected rating curves extrapolating a continuous concentration trace from measured values. All methods are tested on complete and reduced datasets. The average annual runoff in the period 2005-2012 was 190 +/- 25 mio center dot m(3) y(-1). The different estimation methods gave a range of average annual suspended sediment fluxes between 43,000 10,000 t y(-1) and 61,000 16,000 t y(-1). Extreme events with high discharges had a mean duration of 1 day. The average suspended sediment flux during extreme events was 17,000 +/- 5000 t y(-1), which constitutes a year-to-year variation of 20-37% of the total annual flux. The most accurate sampling strategy was bi-daily sampling together with a sampling frequency of 2 h during extreme events. The most consistent estimation method was an uncorrected rating curve of bi-daily measurements (M2), combined with a linear interpolation of extreme event fluxes. Sampling can be reduced to every fourth day, with both method-agreements and accuracies

AB - Quantifying fluxes of water, sediment and dissolved compounds through Arctic rivers is important for linking the glacial, terrestrial and marine ecosystems and to quantify the impact of a warming climate. The quantification of fluxes is not trivial. This study uses a 8-years data set (2005-2012) of daily measurements from the high-Artic Zackenberg River in Northeast Greenland to estimate annual suspended sediment fluxes based on four commonly used methods: M1) is the discharge weighted mean and uses direct measurements, while M2-M4) are one uncorrected and two bias corrected rating curves extrapolating a continuous concentration trace from measured values. All methods are tested on complete and reduced datasets. The average annual runoff in the period 2005-2012 was 190 +/- 25 mio center dot m(3) y(-1). The different estimation methods gave a range of average annual suspended sediment fluxes between 43,000 10,000 t y(-1) and 61,000 16,000 t y(-1). Extreme events with high discharges had a mean duration of 1 day. The average suspended sediment flux during extreme events was 17,000 +/- 5000 t y(-1), which constitutes a year-to-year variation of 20-37% of the total annual flux. The most accurate sampling strategy was bi-daily sampling together with a sampling frequency of 2 h during extreme events. The most consistent estimation method was an uncorrected rating curve of bi-daily measurements (M2), combined with a linear interpolation of extreme event fluxes. Sampling can be reduced to every fourth day, with both method-agreements and accuracies

KW - Arctic river discharge

KW - Annual suspended sediment flux

KW - Q/h relation

KW - Estimation methods

KW - Extreme events

KW - DISSOLVED ORGANIC-CARBON

KW - TRACE-ELEMENT

KW - METHODOLOGICAL CONSIDERATIONS

KW - NORTHEAST GREENLAND

KW - SAMPLING FREQUENCY

KW - WATER DISCHARGE

KW - NUTRIENT FLUXES

KW - RATING CURVES

KW - TRANSPORT

KW - PERMAFROST

U2 - 10.1016/j.scitotenv.2016.12.006

DO - 10.1016/j.scitotenv.2016.12.006

M3 - Journal article

VL - 580

SP - 582

EP - 592

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

ER -