Health & Environment

Texas A&M Oceanographers To Study Harvey’s Effects, Thanks To NSF Funding

September 28, 2017

In this NASA handout image, Hurricane Harvey is photographed aboard the International Space Station as it intensified on its way toward the Texas coast on August 25, 2017. (Photo by NASA via Getty Images)

By Vance Nygard, Texas A&M University College of Geosciences

The first major hurricane to make landfall on the United States mainland since 2005, Hurricane Harvey was a disaster: killing more than 80, displacing millions and causing billions of dollars in property damage. Such fast, severe environmental alterations also leave behind conditions that need to be studied.

Harvey’s quick escalation gave Texans little time to prepare. At 10 a.m. on Aug. 23, the weather system had “no sustained winds of Tropical Storm Force;” 48 hours later, Harvey was a Category 2 hurricane and strengthening, and that night Harvey made landfall as a Category 4 storm.

Four technicians with the Texas A&M Department of Oceanography affiliated Geochemical and Environmental Research Group (GERG) were caught out on the Gulf of Mexico repairing buoys that provide oceanographic data.

Now, the department hopes to learn from the hurricane, thanks to recent funding from the federal government.

The National Science Foundation requested proposals Sept. 1 “focusing on projects with severe urgency” to “address the challenges related to this storm.” Numerous professors in the Department of Oceanography responded, three proposals were funded and the work has already begun.

The lead investigators of the three projects have coordinated ship time on the RV Point Sur from Sept. 22 to Oct. 1 and are currently out in the coastal waters of Texas conducting this research.

Dr. Tony KnapDr. Steve DiMarcoDr. Henry PotterDr. Kathryn Shamberger and Dr. Piers Chapman were awarded a grant for their proposal “The impact of increased fresh water input from Hurricane Harvey to the water quality and stratification of coastal and offshore waters of Texas.”

Galveston Bay chart
The freshwater plume from Galveston Bay. Black lines depict the shipping channel. Top data are wind and tide data. Image credit: Dr. Kristen Thyng.

The team will take two research cruises to study the extent of the freshwater plume coming out of Galveston Bay, Corpus Christi Bay and rivers such as the Brazos, taking real-time data onboard the ship as well as water samples for further lab analysis. They will be keeping a close eye out for hypoxia, which is caused by too little oxygen dissolved in the water, a common late-summer phenomenon in the area that may be exacerbated by the surface freshwater’s inability to mix with deeper water.

Dr. Kristen Thyng and Dr. Scott Socolofsky were awarded funding for their proposal “Measuring freshwater exports from Galveston Bay after Hurricane Harvey.” With GERG postdoctoral researcher Dr. Kerri Whilden, they will be sampling the freshwater plume coming out of Galveston Bay to better understand the complex and previously unstudied dynamics when such a huge pulse of freshwater enters the bay and then the shelf.

They will also be collaborating with Dr. Rob Hetland and the University of Texas at Austin’s Dr. Ben Hodges. The team has extensive experience modeling, and hopes that their findings calibrate and validate current and future models. According to the proposal, they are excited to study Galveston Bay as it recovers from Harvey’s extreme freshwater input and returns to its normal semi-salty state.

The Campbell Lab, led by Dr. Lisa Campbell, has been awarded a grant for their proposal “Hurricane Impact on Phytoplankton Community Dynamics and Metabolic Response.” The lab already has an Imaging FlowCytobot that collects automated continuous time series data of phytoplankton abundance at Surfside Beach on the Texas Coast. This data will be combined with metatransciptomics, or molecular information on the genes that have been expressed, to provide insights on the environmental factors and metabolic responses structuring the phytoplanktonic community during the aftermath of the hurricane. The researchers said that while it is feared that the frequency of extreme storms will increase with future climate change, experts hope that the responses identified by this research will be valuable in predicting how such events will affect primary production – the basis of most food webs in the ocean.

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Media contacts: Robyn Blackmon, Communications Manager, College of Geosciences, (979) 845-6324, robynblackmon@tamu.edu; Leslie Lee, Communications Coordinator, College of Geosciences, (979) 845-0910, leslielee@tamu.edu.

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