New Way to measure the deoxygenation of the ocean

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​New technique offers clues to measure the deoxygenation of the ocean
Date: August 9, 2017
Source: Woods Hole Oceanographic Institution
Summary: The living, breathing ocean may be slowly starting to suffocate. More than two percent of the ocean's oxygen content has been depleted during the last half century, according to reports, and marine 'dead zones' continue to expand throughout the global ocean. This deoxygenation, triggered mainly by more fertilizers and wastewater flowing into the ocean, pose a serious threat to marine life and ecosystems.

The living, breathing ocean may be slowly starting to suffocate. More than two percent of the ocean's oxygen content has been depleted during the last half century, according to reports, and marine "dead zones" continue to expand throughout the global ocean. This deoxygenation, triggered mainly by more fertilizers and wastewater flowing into the ocean, pose a serious threat to marine life and ecosystems.

Yet despite the critical role of oxygen in the ocean, scientists haven't had a way to measure how fast deoxygenation occurs -- today, or in the past when so-called major "anoxic events" led to catastrophic extinction of marine life.
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Now, researchers at the Woods Hole Oceanographic Institution, Arizona State University, and Florida State University have, for the first time, developed a way to quantify how fast deoxygenation occurred in ancient oceans. The research was published Aug. 9, 2017, in the journal Science Advances.

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