Physical mechanism for Karenia brevis bloom initiation in Texas

Presentation at the Harmful Algae 2013 conference in October 2013.

Transcript

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
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
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
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
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
6. Backward Drifters from Port Aransas during HAB Times Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 4 / 6
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
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
9. Proposed Mechanisms Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6
10. Proposed Mechanisms Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6
11. Proposed Mechanisms x x x Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6
12. Proposed Mechanisms x x x Kristen M. Thyng (Texas A&M) Harmful Algae 2013 October 29, 2013 6 / 6