ORCID Profile
0000-0001-9078-0394
Current Organisation
CSIRO Hobart
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Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/8P8N-7570
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/PSZR-DF56
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/5GV3-G731
Publisher: MDPI AG
Date: 17-06-2014
DOI: 10.3390/W6061840
Publisher: Australian Ocean Data Network
Date: 2020
DOI: 10.26198/6H8J-7358
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/KEGZ-WY08
Publisher: American Geophysical Union (AGU)
Date: 09-2022
DOI: 10.1029/2022GB007391
Abstract: Mineral dust is a key source of essential micronutrients, particularly iron (Fe), for phytoplankton in the Southern Ocean. However, observations of dust deposition over the Southern Ocean are sparse, hindering assessments of its influence on marine biogeochemistry. We present a time series (2010–2019) of lithogenic particle flux estimates using sediment trap s les collected at 1,000 m depth at the subantarctic Southern Ocean Time Series (SOTS) site. Lithogenic flux was estimated using in idual Fe, aluminium (Al), titanium, and thorium concentrations in sediment trap particles less than 1 mm in size. These tracers showed good agreement with one another, and their average was investigated as a proxy for mineral dust deposition. This multi‐tracer average lithogenic flux exhibited strong seasonality, peaking in late spring and summer. No significant Fe enrichment was observed compared to the average upper continental crust, indicating that lithogenic material dominates particulate Fe flux at SOTS. Similar Fe:Al ratios in our s les compared to those reported in marine aerosols off southern Australia, coupled with particle trajectory analysis, suggested Australian dust constitutes the primary lithogenic source to SOTS sinking particles. Lead enrichment in our s les also highlighted an anthropogenic contribution to sinking particles, which might represent an additional aeolian source of more bio‐available Fe to subantarctic waters. This study contributes a new long‐term estimate of lithogenic particle fluxes and aeolian deposition over the subantarctic Southern Ocean. These estimates may enhance model representation of trace metal contribution to biogeochemical processes in the Southern Ocean.
Publisher: Australian Ocean Data Network
Date: 2019
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/HGHF-F937
Publisher: Australian Ocean Data Network
Date: 2020
DOI: 10.26198/ZA70-XJ69
Publisher: The Oceanography Society
Date: 12-2021
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/2VEZ-ET47
Publisher: MDPI AG
Date: 17-06-2014
DOI: 10.3390/W6061860
Publisher: Australian Ocean Data Network
Date: 2022
DOI: 10.26198/WSF3-9R77
Publisher: Australian Ocean Data Network
Date: 2019
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/GY1G-2M65
Publisher: Australian Ocean Data Network
Date: 2020
DOI: 10.26198/MBF0-RY85
Publisher: Australian Ocean Data Network
Date: 2020
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/T90C-A971
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/MC02-MX96
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/7AMG-YZ34
Publisher: Australian Ocean Data Network
Date: 2020
DOI: 10.26198/R9NY-R549
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/SVW8-MY05
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/ZVAM-XM74
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/1EXN-HH19
Publisher: Australian Ocean Data Network
Date: 2020
DOI: 10.26198/V7KC-GT27
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/6504-SE58
Publisher: Frontiers Media SA
Date: 06-08-2020
Publisher: Australian Ocean Data Network
Date: 2021
DOI: 10.26198/VJ5X-0940
Publisher: Authorea, Inc.
Date: 30-09-2023
No related grants have been discovered for Cathryn Wynn-Edwards.