Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation.
It has been demonstrated that nitrogen fixation is a source of hydrogen (H2) to the ocean and therefore measurements of H2 concentrations may be used as a possible indicator of nitrogen fixation (Moore, Punshon, Mahaffey, & Karl, 2009). However, the limited number and sparse distribution of meas...
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ftdalhouse:oai:DalSpace.library.dal.ca:10222/15667 2024-06-02T08:11:10+00:00 Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation. Fraser, Michael Department of Oceanography Master of Science Dr Maurice Levasseur Dr Daniel Kelley Dr John Cullen Dr Markus Kienast Dr Robert Moore Not Applicable 2012-10-30T12:58:05Z http://hdl.handle.net/10222/15667 en eng http://hdl.handle.net/10222/15667 North Atlantic South Atlantic hydrogen indicator trace gases nitrogen fixation 2012 ftdalhouse 2024-05-06T11:40:25Z It has been demonstrated that nitrogen fixation is a source of hydrogen (H2) to the ocean and therefore measurements of H2 concentrations may be used as a possible indicator of nitrogen fixation (Moore, Punshon, Mahaffey, & Karl, 2009). However, the limited number and sparse distribution of measurements of dissolved hydrogen and nitrogen fixation rates made in the open ocean in the past have made it difficult to quantify the relationship between them. Toward this end, a new method of equilibrating seawater samples for H2 measurement was employed along the 13,000 km Atlantic Meridional Transect (AMT20) from UK to Chile, allowing H¬2 to be measured from underway samples every 3.5 minutes and thereby considerably increasing the number and resolution of H2 measurements made in the open ocean.These high-resolution measurements reveal two regions with high H¬2 concentrations, one in the North Atlantic and one in the South Atlantic. Other/Unknown Material North Atlantic Dalhousie University: DalSpace Institutional Repository |
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Open Polar |
collection |
Dalhousie University: DalSpace Institutional Repository |
op_collection_id |
ftdalhouse |
language |
English |
topic |
North Atlantic South Atlantic hydrogen indicator trace gases nitrogen fixation |
spellingShingle |
North Atlantic South Atlantic hydrogen indicator trace gases nitrogen fixation Fraser, Michael Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation. |
topic_facet |
North Atlantic South Atlantic hydrogen indicator trace gases nitrogen fixation |
description |
It has been demonstrated that nitrogen fixation is a source of hydrogen (H2) to the ocean and therefore measurements of H2 concentrations may be used as a possible indicator of nitrogen fixation (Moore, Punshon, Mahaffey, & Karl, 2009). However, the limited number and sparse distribution of measurements of dissolved hydrogen and nitrogen fixation rates made in the open ocean in the past have made it difficult to quantify the relationship between them. Toward this end, a new method of equilibrating seawater samples for H2 measurement was employed along the 13,000 km Atlantic Meridional Transect (AMT20) from UK to Chile, allowing H¬2 to be measured from underway samples every 3.5 minutes and thereby considerably increasing the number and resolution of H2 measurements made in the open ocean.These high-resolution measurements reveal two regions with high H¬2 concentrations, one in the North Atlantic and one in the South Atlantic. |
author2 |
Department of Oceanography Master of Science Dr Maurice Levasseur Dr Daniel Kelley Dr John Cullen Dr Markus Kienast Dr Robert Moore Not Applicable |
author |
Fraser, Michael |
author_facet |
Fraser, Michael |
author_sort |
Fraser, Michael |
title |
Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation. |
title_short |
Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation. |
title_full |
Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation. |
title_fullStr |
Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation. |
title_full_unstemmed |
Hydrogen supersaturations in the North and South Atlantic - a possible indicator of nitrogen fixation. |
title_sort |
hydrogen supersaturations in the north and south atlantic - a possible indicator of nitrogen fixation. |
publishDate |
2012 |
url |
http://hdl.handle.net/10222/15667 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://hdl.handle.net/10222/15667 |
_version_ |
1800757219030990848 |