K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean
Progress Code: completed Statement: No problems with analysis, but there were a lot of problems with GO-FLO bottles during sampling, i.e. bottles either not closing or leaking on arrival on deck. As a result, there is a large number of missing samples (NaN), and we also took some salinity samples fo...
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ftands:oai:ands.org.au::2820429 2023-10-09T21:45:50+02:00 K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean Spatial: westlimit=70; southlimit=-66; eastlimit=95; northlimit=-57 Temporal: From 2017-01-10 to 2018-02-28 https://researchdata.edu.au/k-axis-dissolved-southern-ocean/2820429 unknown Australian Ocean Data Network https://researchdata.edu.au/k-axis-dissolved-southern-ocean/2820429 AAS_4344_dFe Dataset DOI AU/AADC > Australian Antarctic Data Centre, Australia oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS TRACE ELEMENTS GO-FLO BOTTLES SHIPS R/V AA > R/V Aurora Australis R/V UM > R/V UMITAKA MARU ACE/CRC AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > Banzare Bank INDIAN OCEAN > KERGUELEN ISLANDS dataset ftands 2023-09-18T22:47:06Z Progress Code: completed Statement: No problems with analysis, but there were a lot of problems with GO-FLO bottles during sampling, i.e. bottles either not closing or leaking on arrival on deck. As a result, there is a large number of missing samples (NaN), and we also took some salinity samples for additional data quality control as follows: A subset of salinity samples (n=124) was taken from GO-FLO bottles to check whether bottles had closed at the expected depths and/or whether there were problems with leaking. Salinity samples were compared to CTD salinities, and samples where measured salinity did not match the respective CTD salinity (n=9) were flagged as suspect and are not included in the data sheet. Note that salinity checks were predominantly performed on GO-FLO bottles that were suspicious (e.g. leaking), so they do not represent a random set of samples. Purpose Supply dissolved iron data for the K-axis region. Complimentary to other K-axis data. Sampling was conducted according to GEOTRACES protocols. Samples for trace element analyses, including dissolved iron (dFe), were filtered through acid-cleaned 0.2 um cartridge filters (Pall Acropak) under constant airflow from several ISO class 5 HEPA units. All plastic ware was acid-cleaned prior to use, following GEOTRACES protocols. Samples were collected into low-density polyethylene (LDPE) bottles, acidified immediately to pH 1.7 with Seastar Baseline hydrochloric acid (HCl), double-bagged and stored at room temperature until analysis on shore. Samples for dFe analysis were pre-concentrated offline (factor 40) on a SeaFAST S2 pico (ESI, Elemental Scientific, USA) flow injection system with a Nobias Chelate-PA1 column. Samples were eluted from the column in 10% distilled nitric acid (HNO3), with calibration based on the method of standard additions in seawater (made using multi-element standards in a 10% HNO3 matrix, rather than an HCl matrix). Pre-concentrated samples were analysed using Sector Field Inductively Coupled Plasma Mass Spectrometry ... Dataset Antarc* Antarctica aurora australis Kerguelen Islands Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean Kerguelen Kerguelen Islands Indian Banzare Bank ENVELOPE(77.733,77.733,-58.833,-58.833) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS TRACE ELEMENTS GO-FLO BOTTLES SHIPS R/V AA > R/V Aurora Australis R/V UM > R/V UMITAKA MARU ACE/CRC AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > Banzare Bank INDIAN OCEAN > KERGUELEN ISLANDS |
spellingShingle |
oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS TRACE ELEMENTS GO-FLO BOTTLES SHIPS R/V AA > R/V Aurora Australis R/V UM > R/V UMITAKA MARU ACE/CRC AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > Banzare Bank INDIAN OCEAN > KERGUELEN ISLANDS K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean |
topic_facet |
oceans EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS TRACE ELEMENTS GO-FLO BOTTLES SHIPS R/V AA > R/V Aurora Australis R/V UM > R/V UMITAKA MARU ACE/CRC AMD/AU AMD CEOS GEOGRAPHIC REGION > POLAR CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > Banzare Bank INDIAN OCEAN > KERGUELEN ISLANDS |
description |
Progress Code: completed Statement: No problems with analysis, but there were a lot of problems with GO-FLO bottles during sampling, i.e. bottles either not closing or leaking on arrival on deck. As a result, there is a large number of missing samples (NaN), and we also took some salinity samples for additional data quality control as follows: A subset of salinity samples (n=124) was taken from GO-FLO bottles to check whether bottles had closed at the expected depths and/or whether there were problems with leaking. Salinity samples were compared to CTD salinities, and samples where measured salinity did not match the respective CTD salinity (n=9) were flagged as suspect and are not included in the data sheet. Note that salinity checks were predominantly performed on GO-FLO bottles that were suspicious (e.g. leaking), so they do not represent a random set of samples. Purpose Supply dissolved iron data for the K-axis region. Complimentary to other K-axis data. Sampling was conducted according to GEOTRACES protocols. Samples for trace element analyses, including dissolved iron (dFe), were filtered through acid-cleaned 0.2 um cartridge filters (Pall Acropak) under constant airflow from several ISO class 5 HEPA units. All plastic ware was acid-cleaned prior to use, following GEOTRACES protocols. Samples were collected into low-density polyethylene (LDPE) bottles, acidified immediately to pH 1.7 with Seastar Baseline hydrochloric acid (HCl), double-bagged and stored at room temperature until analysis on shore. Samples for dFe analysis were pre-concentrated offline (factor 40) on a SeaFAST S2 pico (ESI, Elemental Scientific, USA) flow injection system with a Nobias Chelate-PA1 column. Samples were eluted from the column in 10% distilled nitric acid (HNO3), with calibration based on the method of standard additions in seawater (made using multi-element standards in a 10% HNO3 matrix, rather than an HCl matrix). Pre-concentrated samples were analysed using Sector Field Inductively Coupled Plasma Mass Spectrometry ... |
format |
Dataset |
title |
K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean |
title_short |
K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean |
title_full |
K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean |
title_fullStr |
K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean |
title_full_unstemmed |
K-axis dissolved iron (dFe) data from the Kerguelen-Axis region of the Southern Ocean |
title_sort |
k-axis dissolved iron (dfe) data from the kerguelen-axis region of the southern ocean |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/k-axis-dissolved-southern-ocean/2820429 |
op_coverage |
Spatial: westlimit=70; southlimit=-66; eastlimit=95; northlimit=-57 Temporal: From 2017-01-10 to 2018-02-28 |
long_lat |
ENVELOPE(77.733,77.733,-58.833,-58.833) |
geographic |
Southern Ocean Kerguelen Kerguelen Islands Indian Banzare Bank |
geographic_facet |
Southern Ocean Kerguelen Kerguelen Islands Indian Banzare Bank |
genre |
Antarc* Antarctica aurora australis Kerguelen Islands Southern Ocean |
genre_facet |
Antarc* Antarctica aurora australis Kerguelen Islands Southern Ocean |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/k-axis-dissolved-southern-ocean/2820429 AAS_4344_dFe Dataset DOI |
_version_ |
1779321481671475200 |