Journal article
An equatorial Pacific rain event: Influence on the distribution of iron and hydrogen peroxide in surface waters
Marine Chemistry, Vol.75(1-2), pp.69-88
2001
Abstract
The wet deposition of iron and peroxides was monitored during an intense rain squall in the equatorial Pacific Ocean. Iron and hydrogen peroxide were determined at sea using adsorptive cathodic stripping voltammetry (ACSV) and an enzyme-catalyzed flourometric technique, respectively. The equatorial rainwater was enriched in ACSV reactive iron (average 2.7 nmol Fe kg-1) and hydrogen peroxide (average 8.5 μmol kg-1) relative to the concentrations found in surface seawater (0.05-0.07 nmol Fe kg-1; 40-70 nmol peroxides kg-1). Wet depositional fluxes during the squall varied from 70 to 105 nmol Fe m-2 h-1 and from 56 to 880 μmol peroxide m-2 h-1. The input of rainwater into the surface layer was documented by using hydrogen peroxide and iron signals as well as the depression in surface salinity as tracers. The squall created a patch of lower-salinity surface seawater that was relatively enriched in ACSV reactive iron (0.2-0.3 nmol Fe kg-1) and peroxides (200-300 nmol kg-1). The observed concentrations of iron and peroxides in rainwater, their wet-depositional fluxes, and their initial sea surface enrichments, were quantitatively consistent with independent predictions based on applicable iron aerosol and gas-phase peroxide scavenging models for the region.
Details
- Title
- An equatorial Pacific rain event: Influence on the distribution of iron and hydrogen peroxide in surface waters
- Authors
- A K Hanson (Author) - University of Rhode Island, United StatesNeil W Tindale (Author) - University of the Sunshine Coast - Faculty of Science, Health and EducationM A R Abdel-Moati (Author) - Qatar University, Qatar
- Publication details
- Marine Chemistry, Vol.75(1-2), pp.69-88
- Publisher
- Elsevier BV
- Date published
- 2001
- DOI
- 10.1016/S0304-4203(01)00027-5
- ISSN
- 0304-4203
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 99449653202621
- Output Type
- Journal article
Metrics
5 File views/ downloads
812 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Chemistry, Multidisciplinary
- Oceanography
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites