Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea

Conrad, Sarah; Ingri, Johan; Gelting, Johan; Nordblad, Fredrik; Engström, Emma; Rodushkin, Ilia; Andersson, Per S.; Porcelli, Don; Gustafsson, Örjan; Semiletov, Igor; Öhlander, Björn

doi:https://doi.org/10.5194/bg-16-1305-2019

Articles | Volume 16, issue 6

https://doi.org/10.5194/bg-16-1305-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-16-1305-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 6

Research article

|

28 Mar 2019

Research article |

| 28 Mar 2019

Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea

Sarah Conrad, Johan Ingri, Johan Gelting, Fredrik Nordblad, Emma Engström, Ilia Rodushkin, Per S. Andersson, Don Porcelli, Örjan Gustafsson, Igor Semiletov, and Björn Öhlander

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Final revised paper (published on 28 Mar 2019)
Supplement to the final revised paper
Preprint (discussion started on 26 Apr 2018)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Review of the manuscript bg-2018-181 “Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea” Conrad et al. (2018).', Anonymous Referee #1, 03 Jul 2018
- AC1: 'Answer to reviewer #1', Sarah Conrad, 31 Jul 2018
RC2: 'Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea', Anonymous Referee #2, 12 Jul 2018
- AC2: 'Answer to reviewer #2', Sarah Conrad, 31 Jul 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (06 Oct 2018) by Aninda Mazumdar

ED: Reconsider after major revisions (11 Oct 2018) by Aninda Mazumdar

AR by Sarah Conrad on behalf of the Authors (24 Oct 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (25 Oct 2018) by Aninda Mazumdar

RR by Anonymous Referee #2 (28 Jan 2019)

ED: Publish subject to minor revisions (review by editor) (26 Feb 2019) by Aninda Mazumdar

AR by Sarah Conrad on behalf of the Authors (27 Feb 2019) Author's response Manuscript

ED: Publish as is (12 Mar 2019) by Aninda Mazumdar

AR by Sarah Conrad on behalf of the Authors (13 Mar 2019) Manuscript

Post-review adjustments

AA: Author's adjustment | EA: Editor approval

AA by Sarah Conrad on behalf of the Authors (22 Mar 2019) Author's adjustment Manuscript

EA: Adjustments approved (27 Mar 2019) by Aninda Mazumdar

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Short summary

Iron analysis of the particulate, colloidal, and truly dissolved fractions along the Lena River freshwater plume showed that the particulate iron dominates close to the coast. Over 99 % particulate and about 90 % colloidal iron were lost, while the truly dissolved phase was almost constant. Iron isotopes suggest that the shelf acts as a sink for particles and colloids with negative iron isotope values, while colloids with positive iron isotope values travel further out into the Arctic Ocean.