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ISS014-E-07258 (4 Nov. 2006) --- Galveston, Texas is featured in this image photographed by an Expedition 14 crewmember on the International Space Station (ISS). Mexico established a port of entry (known as Galveston) in 1825, and following the Texas Revolution it was the capital of the Republic of Texas during 1836. The modern-day city of Galveston was incorporated in 1839, and became the major trading seaport of Texas during the latter half of the 19th century. The city was largely destroyed in early September of 1900 by a powerful hurricane; this, coupled with construction of the Houston Ship Channel and discovery of oil in eastern Texas shifted the center of trade northwest to Houston. Many human footprints are easily observed from the vantage point of low Earth orbit. The eastern half of Galveston Island is dominated by the city of Galveston (gray-white region at center). A large seawall along the Gulf of Mexico (southern coastline of Galveston Island) protects most of the city. To the west of Galveston, coastal wetlands are largely submerged by regional subsidence--a result of ground water withdrawal by the petrochemical industry of Houston and Texas City. The entrance to Galveston Bay and the Houston Ship Channel is located between Galveston Island and the Bolivar Peninsula (upper right). Numerous ship wakes are visible along the Houston Ship Channel. Other visible features of the entrance to Galveston Bay include the five-mile long Texas City Dike, a structure that protects the Texas City channel and includes a fishing pier that extends 600 feet beyond the end of the Dike. Extensive petroleum processing facilities are located to the west of the Dike in Texas City. The Intracoastal Waterway runs through western Galveston Bay; new subdivisions built on dredge spoils are visible along the northern boundary of the Waterway. Geologists studying the ISS collection of downlinked still imagery observe that complex estuarine sediment patterns are visible in this image. Dark brown to tan waters adjacent to the Bolivar Peninsula and Texas City Dike reflect increased sediment loads following heavy rains in mid-to-late October, coupled with northerly winds moving Bay water southwards. Turbidity currents to both the northwest and southeast of Galveston Island produce a more chaotic pattern of sediment-laden (light green to tan) and relatively sediment-free (dark green) water leading into the dark green Gulf of Mexico (lower right).
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