By Hurricane Ike Field Assessment Team
Typhoon Ike Coastal impression overview: box Observations from October 3-6, 2008 describes the environmental and infrastructure affects of storm Ike at the top Texas coast. most crucial, the record identifies components that looked as if it would offer defense from hurricane harm and offers a few coverage implications. After a basic advent to the realm, its geology, old hurricane occasions and rehabilitation, and coastal strategies, the booklet describes typhoon Ike, together with water degrees, hurricane surge measurements, and comparisons with different storms. It portrays the actual affects of the hurricane, equivalent to geomorphic adjustments, erosion premiums, coastline place, and effect of winds on engineered constructions. harm to and survival of coastline constructions piers, seawalls, geotextile tubes, groins, and inlet jetties also are mentioned. next chapters tackle structural harm to structures, lifelines and infrastructure, and marinas from wind, flooding, waves, and erosion. ultimately, the booklet increases coverage matters and summarizes classes discovered. Civil engineers engaged in tasks concerning coasts, oceans, ports, and rivers, specially in hurricane-prone parts; amenities managers in coastal components; govt officers from organizations that perform coastal region administration or deal with emergency preparedness will locate the observations and conclusions of this publication necessary.
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Extra resources for Hurricane Ike Field Assessment Team: Field Observations on October 3-6, 2008
Table 5-1 summarizes the original length of each pier when it first appeared on the historic shoreline data, the pier length measured from the 2006 pre-storm photography, and the post-storm length measured from the 2008 aerial images. Most of the piers were shorter than originally constructed. The shortening was most likely due to past storm activity. The length lost during Hurricane Ike was measured from the 2008 post-storm photography. The two active fishing piers on Bolivar Peninsula were completely destroyed by the storm and only the pilings were left.
These historic shoreline change studies indicate where the chronic hot spots (areas of higher erosion than surrounding trends) exist. The impacts of Hurricane Ike were felt all along the coast but were more severe in the hot spots. Causes for this erosion include the lack of sand in the system, downdrift impacts due to shoreline protection structures, and shoreline orientation changes. See Stauble and Gravens (2004) for more details on causes of erosion hot spots. Shoreline Position Change To evaluate the shoreline changes from Hurricane Ike, the shoreline was digitized from the 2006 pre-storm aerial photos using GIS.
West of the seawall, the beaches of West Beach are narrow (30- to 50-m-wide) with low dunes. An example of the West Beach is shown in Figure 4-9a at Pirates Beach. The shorelines show a steady landward movement since 1930. A sand-filled geotextile tube was constructed at this location and was buried below a dune feature, which is about 20 m in front of the first row of homes. Figure 4-9b shows the post-storm conditions. Overwash sand penetration occurred between 100 and 150 m landward of the 2006 shoreline.