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BRRR- Brazos River Rapid Response

Workshop 21 September 2007

Texas AM University at Galveston Mitchell Campus, Sea Aggies Center Room 601


Workshop Agenda
  • Morning Session 10:30 - Noon
    • Introduction
    • Data Collection
    • Preliminary findings
  • Lunch: Sea Aggie Center, Noon - 1:00
  • Afternoon Session: 1:00 - 3:00
    • Paper writing
    • Data sharing
    • Small boat operations
    • Future response to ocean threats
  • Acknowledgements
  • Support for this project was provided by :
    • Texas SeaGrant (Rapid Response Grant)
    • NOAA CSCOR (Analysis)
    • TAMUG - MARS (Ship ops)
    • TAMU - Galveston (ship ops)
    • TAMUUG - MARB (Workshop/Lunch)
    Workshop Goals
    • To discuss preliminary findings of BRRR cruise
    • To establish collaborations and
    • To exchange informations on data availability and analyses status
    • To discusss lessons learned and future responses to coastal threats
    Texas Hypoxia
    • Historical context
      • Harper et al. 1981
        • Hypoxia found off Freeport Texas, 1979
        • Coincides with Brazos River flooding event
          • May-July
        • Benthic organisms
          • Number and diversity decreased
        • Linkage with Mississippi River not excluded
        • July storm ended event
          • Numbers and diversity returned to normal early 1980
    • Sporadic reporting of low dissolved oxygen concentrations along Texas coast
    • No targeted sampling plan for Texas hypoxia ( despite large effort off coastal Louisiana)

    Brazos River
    • Only Texas river that empties directly into the Gulf
    • Unprecedented July/August discharge due to heavy rainflall in Texas June/July 2007

  • Bottom DO
  • Bottom DO : 2007

     

    Bottom DO : 2006

     

    Bottom DO : 2005

     

    Bottom DO : 2004

     

    Bottom DO : 2003

     

    Bottom DO : 2002


  • Texas Coastal Observations
  • Dr. Tim Dellapenna, TAMUG
    • Sediment/grain size
    • River hydrographs
    • CTD transects
  • Dr. David Shormann, Dive into Math
    • Temprature/salinity
    • Dissolved oxygen concentrations
    • Brazos River mouth observations
  • Lance Robinson, texas Parks and Wild Life
Cruise Information

Objectives

  • To perform an assessment of spatial extent and sverity of hypoix area associated with discharge of Brazos River near Freeport, Texas
  • Four vessels
  • Nine cross-shelf lines
    • Four stations per line (36 stations total)
    • Depth ranges are roughly 10m to 20m

Plan

  • Nine Cross shelf Lines
  • 36 Stations
  • Four Vessels

TABS Buoys


Investigators

  • Lead PI
    • Steven F. DiMarco (TAMU)
  • Co-Principal Investigators
    • Tim Dellapenna (TAMUG)
    • Matt Howard (TAMU)
    • David Shorman (Dive into Math)
  • Contributing Investigators
    • Tom Bianchi
    • Ethan Grossman (TAMU)
    • Norman Guinasso (TAMU)
    • Antonietta Quigg (TAMUG)
    • Gil Rowe (TAMUG)
    • Dan Thornton (TAMU)

Vessels

  • R/V Roamin Empire
    • Capt. Robert Webster
  • R/V Cavalla
    • Dr. Tim Dellapenna
  • R/V Guld Coast
    • Dr. David Shormann
  • TPWD Boston Whaler

Personnel

  • Roamin' Empire
    • Webster, Dimarco, Fielder, Cole, Mullins, Navatta, Nunnally, Visser, Weaver, Dancer
  • Cavalla
    • Dellapenna, Clark, Pearce, Steichen, herbort
  • Gulf Coast
    • Shormann, Howard, Nathan, Scott, Josh
  • TPWD
    • Neyland and ?

22 total (15 students)

Actuals

20 Stations completed

  • All stations on Lines 2,3,4,5
  • Two Stations each on Lines 1,6,9
  • 22 CTD/DO/xmiss casts
  • ~300 water samples
    • Chlorophyll, nutrients, DO, salinity, N2O, DOC, TSS, Pigments, Isotopes (carbon/oxygen)
  • Sediments samples
  • Macrofauna
NOAA SEAMAP Cruises
  • Low near bottom DO concentations on inner shelf in summer 2002-2005, 2007
  • Associated with freswater discharge ocations
    • Including Galveston, Freeport, Matagorda
  • Low DO near shelf break likely associated with offshore water masses
Biogeochemical Findings
  • Dellapenna/Noll: Grain size data, July CTD transects and core data, River Hydrographs
  • Quigg/Alvarez: chlorophyll
  • Grossman/Staruss: Isotopes
  • Bianchi/Smith: DOC/lignin
  • Campbell: phytoplankton
  • Thornton/Viser: N2O
Afternoon Session
  • Ocean Sciences 2008 abstract planning (Dimarco lead)
    • 2 October 2007: short fuse
    • Who is planning on submitting
    • Tentative titles
  • Other publications
    • Note to nature?
  • Future readiness for response to coastal threats
  • Striking while iron is hot
  • Raising awareness of costal problems
  • Coordination with Texas State Agencies
  • Other State Academic institution
  • (Larger?) Ship options
Data sharing/availability
  • Who has data?
  • Where is it stored?
  • How can I get it?
Next steps
  • Planning/timelines for abstracts/paper
  • Future opportunities/collaboration
Stations competed


Humberto



Subpages (1): Preliminary Findings