Water column nitrate+nitrite d15N and d18O and total dissolved nitrogen d15N measurements from R/V Ka`imikai-O-Kanaloa cruise KOK1806 (HOT LAVA) in July 2018

Alternative Title
Date Created
2019-06-18
Location
Southwest Pacific Ocean between New Caledonia and Tahiti along ~18 deg S
westlimit: -154.829; southlimit: 19.373; eastlimit: -154.71; northlimit: 19.45
DOI
10.1575/1912/bco-dmo.770818.1
Replaced By
Keywords
Nitrate
Nitrate isotopes
Dissolved organic nitrogen
Dissolved organic nitrogen isotopes
Abstract
This data set includes water column nitrate+nitrite and total dissolved nitrogen d15N measurements. These measurements were used to address the source of nitrate+nitrite in surface waters observed after the 2018 Kilauea eruption entered the ocean, leading to enhanced surface ocean chlorophyll. The results are consistent with an upwelling source of nitrate+nitrite from ~400 m driven by hot lava entering the ocean, leading to increased buoyancy of waters, driving "roils" (see F. J. Sansone, and J. A. Resing, 1995, J. Geophys. Res. Oceans). These data are also used as evidence that biological nitrogen fixation did not contribute to the nitrate+nitrite observed in surface waters. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/770818
Description
Dataset: HOT LAVA Nitrogen
Embargo Date
Citation
Knapp, A. N. (2019). Water column nitrate+nitrite d15N and d18O and total dissolved nitrogen d15N measurements from R/V Ka`imikai-O-Kanaloa cruise KOK1806 (HOT LAVA) in July 2018. Biological and Chemical Oceanography Data Management Office. https://doi.org/10.1575/1912/bco-dmo.770818.1
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Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0