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Physical mechanism for Karenia brevis bloom initiation in Texas

Kristen Thyng
October 29, 2013

Physical mechanism for Karenia brevis bloom initiation in Texas

Presentation at the Harmful Algae 2013 conference in October 2013.

Kristen Thyng

October 29, 2013
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  1. Physical Mechanism for Karenia brevis Bloom Initiation
    in Texas
    Kristen M. Thyng
    Harmful Algae 2013
    Texas A&M University
    Robert D. Hetland, Xiaoqian Zhang, Lisa Campbell
    October 29, 2013
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 1 / 6

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  2. Mechanism for Aggregation
    Based on R.D. Hetland and L. Campbell, GRL, 2007.
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 2 / 6

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  3. Mechanism for Aggregation
    Based on R.D. Hetland and L. Campbell, GRL, 2007.
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 2 / 6

    View Slide

  4. Mechanism for Aggregation
    x
    x
    x
    Based on R.D. Hetland and L. Campbell, GRL, 2007.
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 2 / 6

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  5. Difference in Along-shore Winds in HAB Years
    1996 1998 2000 2002 2004 2006 2008 2010 2012
    −3.5
    −3.0
    −2.5
    −2.0
    −1.5
    −1.0
    −0.5
    0.0
    0.5
    Year
    Wind speed (m s-1)
    non-HAB years
    HAB years
    -1.65 m s-1
    Based on M.T. Ogle, Masters Thesis, Texas A&M University, 2012.
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 3 / 6

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  6. Backward Drifters from Port Aransas during HAB Times
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 4 / 6

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  7. Backward Drifters from Port Aransas during HAB Times
    Tracking drifters backward from Port Aransas from the autumn into
    summer helps indicate their origin
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 4 / 6

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  8. Forward Tracking from the South
    Limiting drifters to those near Port Aransas during fall shows that drifters
    in non-HAB years hit the coast or exit the domain before the critical time.
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 5 / 6

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  9. Proposed Mechanisms
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6

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  10. Proposed Mechanisms
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6

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  11. Proposed Mechanisms
    x
    x
    x
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6

    View Slide

  12. Proposed Mechanisms
    x
    x
    x
    Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6

    View Slide