At-sea high-resolution chemical mapping: extreme barium depletion in North Pacific surface water |
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| Institution: | 1. Department of Mathematical Analysis, Faculty of Mathematics, Complutense University of Madrid, 28040 Madrid, Spain;2. Institute for Interdisciplinary Mathematics, Department of Mathematical Analysis, Faculty of Mathematics, Complutense University of Madrid, 28040 Madrid, Spain;1. Department of Engineering Ecology, Sochi State University, 354000 Sochi, Russian Federation;1. Department of Mathematics, University of California, Santa Barbara, CA, USA;2. Faculdade de Economia do Porto, Rua Dr. Roberto Frias, 4200-464 Porto, Portugal;1. GEOMAR – Helmholtz Centre for Ocean Research Kiel, Wischhofstr. 1-3, 24148 Kiel, Germany;2. University of Ottawa, FSS Hall, 120 University, Ottawa, ON K1N 6N5, Canada;3. Woods Hole Oceanographic Institution, 266 Woods Hole Road, Woods Hole, MA 02543-1050, USA;4. Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada;5. University of Washington and NOAA/PMEL, 7600 Sand Point Way NE, Seattle, WA 98115, USA;1. Bolyai Institute, University of Szeged, H-6720 Szeged, Aradi vértanúk tere 1, Hungary;2. MTA-DE “Lendület” Functional Analysis Research Group, Institute of Mathematics, University of Debrecen, H-4010 Debrecen, P.O. Box 12, Hungary |
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| Abstract: | We have modified an inductively coupled plasma mass spectrometer (ICPMS) for use at sea, which permits mapping of dissolved Ba at high temporal and spatial resolution. While evaluating this system off the Pacific coast of Baja California, we discovered Ba depletion greater than 60% in surface waters over tens of kilometers. Observed Ba abundance is among the lowest reported in any ocean water. No corresponding depletion was seen in Sr, which strongly suggests that acantharians are not the primary source of biogenic Ba in these surface waters. |
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