Theses and Dissertations

Date of Award


Document Type


Degree Name

Master of Science (MS)


Ocean, Coastal, and Earth Sciences

First Advisor

Dr. Richard Kline

Second Advisor

Dr. Abdullah Rahman

Third Advisor

Dr. Juan González


The deployment of 2,611 concrete pyramids in Texas gulf waters represents a significant undertaking. In collaboration with Texas Parks and Wildlife, bathymetric sidescan data was collected at three reefs hit by Hurricane Harvey from 2017 to 2019. All reefs lost significant pyramid height between 2017 and 2019. The pyramids demonstrated greater subsidence in the year when Harvey occurred and minimal subsidence the following year. Pyramids that moved outside the reefs were due to hurricane forces and shrimp trawl activity. Pyramids that remained inside the reef remained at their deployment location for two reefs. The pyramids remaining in the third reef moved into dense clusters due to Hurricane Harvey. The evidence suggests that the pyramids are most affected by extreme weather and trawling activity and otherwise maintain their positions and stabilize their height.


Copyright 2018 Cameron J. Moody. All Rights Reserved.