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Estuarine Spatial and Temporal Variability in Physical and Biological Properties

Explore the spatial and temporal variations in estuarine physical, biological, and chemical properties, including factors influencing temperature, salinity, dissolved oxygen, and pCO2. Analyze the driving forces behind these variations and investigate the role of coastal ocean dynamics in estuarine dissolved oxygen changes. Investigate the impact of environmental factors on dissolved oxygen fluctuations and determine if observed changes are driven by biological or physical processes. Generate and analyze plots of TCO2, alkalinity, nutrients, pCO2, pH, and omega against salinity to identify deviations from conservative mixing predictions.

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Estuarine Spatial and Temporal Variability in Physical and Biological Properties

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  1. Questions: • What is the along-estuary spatial variability in physical, biological and chemical properties (temperature, salinity, dissolved oxygen, pCO2) and what are the driving forces that create these variations? • Describe the time dependence in physical properties (temperature, salinity, dissolved oxygen) and explain what forces these.

  2. R/V Elakhaunderway flow-through Conductivity-Temperature (C-T)

  3. Group3

  4. Cast 15, raw downcast

  5. Mooring:

  6. Oregon Shelf Conditions 17 – 20 Aug 2013 cold, salty, low oxygen water over the shelf high chlorophyll, high backscatter near coast

  7. Questions: • What is the along-estuary spatial variability in physical, biological and chemical properties (temperature, salinity, dissolved oxygen, pCO2) and what are the driving forces that create these variations? • Describe the time dependence in physical properties (temperature, salinity, dissolved oxygen) and explain what forces these. • Ecosystem-related questions • What role does the coastal ocean play in estuarine DO dynamics? • What environmental factors are contributing to DO changes? • Are the observed changes at the two stations being driven by biology or physical processes? • Generate plots of TCO2, alkalinity, nutrients, pCO2, pH, omega versus salinity and discuss departures from conservative mixing predictions

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