Abstract:
:From mid-May to August 2011, extreme runoff in the Columbia River ranged from 14,000 to over 17,000 m(3)/s, more than two standard deviations above the mean for this period. The extreme runoff was the direct result of both melting of anomalously high snowpack and rainfall associated with the 2010-2011 La Niña. The effects of this increased freshwater discharge were observed off Newport, Oregon, 180 km south of the Columbia River mouth. Salinity values as low as 22, nine standard deviations below the climatological value for this period, were registered at the mid-shelf. Using a network of ocean observing sensors and platforms, it was possible to capture the onshore advection of the Columbia River plume from the mid-shelf, 20 km offshore, to the coast and eventually into Yaquina Bay (Newport) during a sustained wind reversal event. Increased freshwater delivery can influence coastal ocean ecosystems and delivery of offshore, river-influenced water may influence estuarine biogeochemistry.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Mazzini PL,Risien CM,Barth JA,Pierce SD,Erofeev A,Dever EP,Kosro PM,Levine MD,Shearman RK,Vardaro MFdoi
10.1038/srep17145subject
Has Abstractpub_date
2015-11-26 00:00:00pages
17145issn
2045-2322pii
srep17145journal_volume
5pub_type
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