Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx
Antarctic shelf systems play an important role in organic matter circulation on Earth; hence, identifying the characteristics of dissolved organic matter (DOM) can be a good indicator for understanding its origin, as well as climate change. In this study, to identify the characteristics of DOM in th...
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ftfrontimediafig:oai:figshare.com:article/12450026 2023-05-15T14:01:32+02:00 Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx Jiyi Jang Jiyeon Park Seohee Ahn Ki-Tae Park Sun-Yong Ha Jongkwan Park Kyung Hwa Cho 2020-06-09T04:22:52Z https://doi.org/10.3389/fmars.2020.00339.s001 https://figshare.com/articles/Data_Sheet_1_Molecular-Level_Chemical_Characterization_of_Dissolved_Organic_Matter_in_the_Ice_Shelf_Systems_of_King_George_Island_Antarctica_docx/12450026 unknown doi:10.3389/fmars.2020.00339.s001 https://figshare.com/articles/Data_Sheet_1_Molecular-Level_Chemical_Characterization_of_Dissolved_Organic_Matter_in_the_Ice_Shelf_Systems_of_King_George_Island_Antarctica_docx/12450026 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering dissolved organic matter terrestrial DOM glacier runoff ice shelf systems King George Island Orbitrap Dataset 2020 ftfrontimediafig https://doi.org/10.3389/fmars.2020.00339.s001 2020-06-10T22:54:24Z Antarctic shelf systems play an important role in organic matter circulation on Earth; hence, identifying the characteristics of dissolved organic matter (DOM) can be a good indicator for understanding its origin, as well as climate change. In this study, to identify the characteristics of DOM in the ice shelf systems, surface water was collected from the open sea (OS) and Marian cove (fjord, FJ). Although there were no differences in DOM characteristics between sampling sites in the quantitative analyses, the DOM in the surface water of each region seemed to be more affected by terrestrial than marine biological sources in optical and molecular properties. This finding indicates that the terrestrial DOM related to mosses based on the results of molecular properties: high levels of lipid-like (35–39%) and unsaturated hydrocarbon-like (UH; 27–34%) in both the OS and the FJ regions and significantly higher tannin-like substance and condensed aromatic structures in the FJ than in the OS region. When comparing the FJ transect samples, those nearest to a glacier (FJ1; 0.93 km from the glacier) showed relatively low salinity, high dissolved organic carbon, and high chromophoric DOM, indicating that terrestrial DOM (possibly produced by moss) inflow occurred with the runoff from the freshly melting land ice and glacier. However, no significant differences in molecular composition were detected, suggesting that terrestrial DOM is introduced into the ice shelf systems by melting land ice, and glacier runoff could be a major source of DOM-rich seawater during austral fall when low marine biological activity occurs. This study has a great significance as background data for DOM characteristics in the ice shelf systems due to the enhanced biological activity during the austral summer. Dataset Antarc* Antarctic Ice Shelf King George Island Frontiers: Figshare Antarctic Austral King George Island Marian ENVELOPE(-58.750,-58.750,-62.217,-62.217) Marian Cove ENVELOPE(-58.800,-58.800,-62.217,-62.217) |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering dissolved organic matter terrestrial DOM glacier runoff ice shelf systems King George Island Orbitrap |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering dissolved organic matter terrestrial DOM glacier runoff ice shelf systems King George Island Orbitrap Jiyi Jang Jiyeon Park Seohee Ahn Ki-Tae Park Sun-Yong Ha Jongkwan Park Kyung Hwa Cho Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering dissolved organic matter terrestrial DOM glacier runoff ice shelf systems King George Island Orbitrap |
description |
Antarctic shelf systems play an important role in organic matter circulation on Earth; hence, identifying the characteristics of dissolved organic matter (DOM) can be a good indicator for understanding its origin, as well as climate change. In this study, to identify the characteristics of DOM in the ice shelf systems, surface water was collected from the open sea (OS) and Marian cove (fjord, FJ). Although there were no differences in DOM characteristics between sampling sites in the quantitative analyses, the DOM in the surface water of each region seemed to be more affected by terrestrial than marine biological sources in optical and molecular properties. This finding indicates that the terrestrial DOM related to mosses based on the results of molecular properties: high levels of lipid-like (35–39%) and unsaturated hydrocarbon-like (UH; 27–34%) in both the OS and the FJ regions and significantly higher tannin-like substance and condensed aromatic structures in the FJ than in the OS region. When comparing the FJ transect samples, those nearest to a glacier (FJ1; 0.93 km from the glacier) showed relatively low salinity, high dissolved organic carbon, and high chromophoric DOM, indicating that terrestrial DOM (possibly produced by moss) inflow occurred with the runoff from the freshly melting land ice and glacier. However, no significant differences in molecular composition were detected, suggesting that terrestrial DOM is introduced into the ice shelf systems by melting land ice, and glacier runoff could be a major source of DOM-rich seawater during austral fall when low marine biological activity occurs. This study has a great significance as background data for DOM characteristics in the ice shelf systems due to the enhanced biological activity during the austral summer. |
format |
Dataset |
author |
Jiyi Jang Jiyeon Park Seohee Ahn Ki-Tae Park Sun-Yong Ha Jongkwan Park Kyung Hwa Cho |
author_facet |
Jiyi Jang Jiyeon Park Seohee Ahn Ki-Tae Park Sun-Yong Ha Jongkwan Park Kyung Hwa Cho |
author_sort |
Jiyi Jang |
title |
Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx |
title_short |
Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx |
title_full |
Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx |
title_fullStr |
Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx |
title_full_unstemmed |
Data_Sheet_1_Molecular-Level Chemical Characterization of Dissolved Organic Matter in the Ice Shelf Systems of King George Island, Antarctica.docx |
title_sort |
data_sheet_1_molecular-level chemical characterization of dissolved organic matter in the ice shelf systems of king george island, antarctica.docx |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.00339.s001 https://figshare.com/articles/Data_Sheet_1_Molecular-Level_Chemical_Characterization_of_Dissolved_Organic_Matter_in_the_Ice_Shelf_Systems_of_King_George_Island_Antarctica_docx/12450026 |
long_lat |
ENVELOPE(-58.750,-58.750,-62.217,-62.217) ENVELOPE(-58.800,-58.800,-62.217,-62.217) |
geographic |
Antarctic Austral King George Island Marian Marian Cove |
geographic_facet |
Antarctic Austral King George Island Marian Marian Cove |
genre |
Antarc* Antarctic Ice Shelf King George Island |
genre_facet |
Antarc* Antarctic Ice Shelf King George Island |
op_relation |
doi:10.3389/fmars.2020.00339.s001 https://figshare.com/articles/Data_Sheet_1_Molecular-Level_Chemical_Characterization_of_Dissolved_Organic_Matter_in_the_Ice_Shelf_Systems_of_King_George_Island_Antarctica_docx/12450026 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2020.00339.s001 |
_version_ |
1766271384645795840 |