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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
STUDENT POSTER SESSION COMPETITION
Abstract: Monitoring Changes in a Sediment-Starved
Texas Beach Following the Removal of
an Erosion-Prevention Structure
By
The Texas Open Beaches Act prohibits the construction
of any erosion-prevention structures on Texas beaches.
The recent forced removal of such a structure just south of
Sabine Pass, Texas provides the opportunity to study the
redistribution of trapped sediments by the longshore
current. Locally the coastline has undergone considerable
erosion clue to subsidence, sea level rise and trapping of
sediment from the Sabine River before it is distributed by
the longshore currents of the Gulf of Mexico. The shore to
the west of the jetty location has retreated substantially due
to sediment starvation caused by the jetty in addition to the
other factors listed above. The beach on either side of the
former jetty position is being monitored to determine if the
removal of the jetty will significantly alter the rate of
shoreline erosion. An initial topographic
map
of the heavily
eroded shore immediately west of the jetty is being surveyed
using plane table and alidade. Additional preliminary surveys
have been made of the areas adjacent to the topographic
map
area. These surveys will be used to establish a
base
map
on which subsequent sediment movement can be
shown. Aerial photographs and historical papers will be
utilized to further document sediment movement.
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