10.5285/5AF9E5CF-657D-4640-8FF3-DD3EC2F43367
Ng, Hong Chin
Hong Chin
Ng
0000-0002-2707-8372
University of Bristol
Hawkings, Jon R.
Jon R.
Hawkings
0000-0003-4813-8474
University of Pennsylvania
Wadham, Jemma L.
Jemma L.
Wadham
0000-0002-5251-7162
University of Bristol
Hendry, Katharine R.
Katharine R.
Hendry
0000-0002-0790-5895
British Antarctic Survey
Conway, Tim M.
Tim M.
Conway
0000-0002-3069-9786
University of South Florida
Bertrand, Sebastien
Sebastien
Bertrand
0000-0003-0374-4040
Ghent University
Sieber, Matthias
Matthias
Sieber
0000-0001-5510-6126
University of South Florida
Summers, Brent A.
Brent A.
Summers
0000-0001-9542-7231
University of South Florida
Freitas, Felipe S.
Felipe S.
Freitas
0000-0001-8279-5772
University of Bristol
Ward, James P.J.
James P.J.
Ward
0000-0001-5179-1664
University of Bristol
Pryer, Helena V.
Helena V.
Pryer
0000-0001-8427-1358
University of Cambridge
Arndt, Sandra
Sandra
Arndt
0000-0002-0235-8124
Universite Libre de Bruxelles
Observational data and model output for sediment nutrient cycling at Patagonian fjords
NERC EDS UK Polar Data Centre
2022
"EARTH SCIENCE","OCEANS","COASTAL PROCESSES","FJORDS"
"EARTH SCIENCE","OCEANS","OCEAN CHEMISTRY","NUTRIENTS"
"EARTH SCIENCE","OCEANS","OCEAN CHEMISTRY","STABLE ISOTOPES"
reaction transport model
early diagenesis
fjord
nutrient cycling
stable isotopes
Ng, Hong Chin
Hong Chin
Ng
0000-0002-2707-8372
University of Bristol
Ng, Hong Chin
Hong Chin
Ng
0000-0002-2707-8372
University of Bristol
Hawkings, Jon R.
Jon R.
Hawkings
0000-0003-4813-8474
University of Pennsylvania
Wadham, Jemma L.
Jemma L.
Wadham
0000-0002-5251-7162
University of Bristol
Hendry, Katharine R.
Katharine R.
Hendry
0000-0002-0790-5895
British Antarctic Survey
Conway, Tim M.
Tim M.
Conway
0000-0002-3069-9786
University of South Florida
Bertrand, Sebastien
Sebastien
Bertrand
0000-0003-0374-4040
Ghent University
Sieber, Matthias
Matthias
Sieber
0000-0001-5510-6126
University of South Florida
Summers, Brent A.
Brent A.
Summers
0000-0001-9542-7231
University of South Florida
Freitas, Felipe S.
Felipe S.
Freitas
0000-0001-8279-5772
University of Bristol
Ward, James P.J.
James P.J.
Ward
0000-0001-5179-1664
University of Bristol
Pryer, Helena V.
Helena V.
Pryer
0000-0001-8427-1358
University of Cambridge
Arndt, Sandra
Sandra
Arndt
0000-0002-0235-8124
Universite Libre de Bruxelles
UK Polar Data Centre
Natural Environment Research Council
UK Polar Data Centre
Natural Environment Research Council
UK Polar Data Centre
Natural Environment Research Council
2018-01-18/2020-11-28
2022-03-02/2022-05-20
2022-06-27
2022-06-27
2022-06-16
2022-06-27
en
Dataset
https://github.com/CoderHCN/Patagonian-fjord-silicon-model-BRNS-code-and-output
4 files
25 kB
text/plain
text/csv
1.0
Open Government Licence V3.0
Glacier meltwater supplies a significant amount of silicon (Si) and iron (Fe) sourced from weathered bedrock to downstream ecosystems. However, the extent to which these essential nutrients reach the ocean is regulated by the nature of the benthic cycling of dissolved Si and Fe within fjord systems, given the rapid deposition of reactive particulate fractions at fjord heads. The dataset is used to examine the benthic cycling of the two nutrients at Patagonian fjord heads through geochemical analyses of sediment pore waters and reaction-transport modeling for Si. The dataset contains: (i) pore water redox-sensitive nitrate (NO3-) and dissolved manganese (dMn) concentration data, nutrient dissolved silicon (DSi) and iron (dFe) concentration and isotope data (delta30 Si, delta56 Fe); (ii) mild alkaline leachable (Si-Alk) and acid leachable (Si-HCl) sediment silica content and isotope data; and (iii) reaction transport model output for the benthic cycling of Si. The pore water and sediment samples were collected from four sites: SJ (48.228o S, 73.502o W, 106 m depth), SH (47.679 S, 73.715 W, 203 m depth), SP (48.179 S, 73.347 W, 248 m depth) and SB (47.787 S, 73.610 W, 151 m depth) in the Baker-Martinez Fjord Complex on the research vessel Sur-Austral in February 2017.
Funded by NERC-CONICYT grant NE/P003133/1-PII20150106.
Silicon and nitrate concentrations were measured with spectrophotometry. Dissolved iron concentration, manganese concentration, iron isotopes and silicon isotopes were measured with inductively coupled plasma-mass spectrometry.
The reaction transport model employed is the Biogeochemical Reaction Network Simulator. The model was run under steady state assumption.
Pore water data depth resolution: 5 cm - 15 cm
Sediment data depth resolution: 10 cm - 50 cm
Model data depth resolution: 0.1 cm - 1 cm
(1) Thermo Scientific X-Series 2 quadrupole inductively coupled plasma-mass spectrometer (dissolved iron and manganese concentration measurements)
(2) Thermo-Finnigan Neptune multicollector-inductively coupled plasma-mass spectrometer (silicon and iron isotope measurements)
(3) Maple computing environment version 2016.0 (compile inputs for reaction transport modeling)
The accuracies of the pore water elemental concentration and isotope analyses were assessed with measurements of standard solutions. Errors associated with sediment and pore water analyses were assessed with replicate measurements of samples and standards. Analytical errors for: (i) NO3- concentration is about 0.5% (ii) dMn concentration and dFe concentration are 0.7% - 8.9%; (iii) DSi concentration is about 2.5%; (iv) Si-Alk content is 25%; (v) Si-HCl content is 15%; (vi) delta30 Si is 0.08‰ - 0.34‰, and (vii) delta56 Fe is 0.04‰ - 0.08‰. Model's best fit with observational data was determined by minimizing the root-mean-square error.
Patagonia, Baker-Martinez Fjord Complex Chile
-73.715
-73.347
-48.228
-47.679
Natural Environment Research Council
https://ror.org/02b5d8509
NE/P003133/1
PISCES: Patagonian Ice field Shrinkage impacts on Coastal and fjord EcosystemS