Title: Beachfront Development at Jamaica Beach, Galveston Bay
1Beachfront Development at Jamaica Beach,
Galveston Bay
- Haiyan Yang
- CE394K
- GIS in Water Resources
2Introduction Hurricanes Love Galveston
- 19002000 more than 60 recorded hurricanes hit
Galveston - 1900 Hurricane killed over 8000 people
- 1961 Hurricane Carla brought storm surge 10
miles inland - 1983 Hurricane Alicia most expensive
3Purpose
- Tradeoff
- Beachfront view Awesome
- Beachfront disaster Horrible
- How did disasters affect beaches?
Development pattern Past Future
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7Data Sources
Methods
- Raster Data Processing
- Scan at 800 dpi
- Georeference to UTM 15
- Vector Data Creating
- Digitizing
8Scanned Photograph
Aug 22, 1983 4 days after Hurricane Alicia
9Reduced Images
(Left) May 5, 1958
(Below) Sep 14, 1961 (4 days after Hurricane
Carla)
10Georeferencing in ArcMap
Shift
Rotate
11Add Control Points
Magnifier Window Amazing!
12Linked Ground Control Points
13RMS Error
Experience Good to have RMS Error less than 15
14Georeferenced Beach
May 5, 58 2 buildings
Sep 14, 61 gt 25 buildings
15Beach after Hurricane Alicia Aug 22, 1983
More buildings!
16Digitizing Shoreline and Washover
Shoreline Erosion Approximate 80m
17Conclusions
- Beachfront area
- In the past
- Erosion occurred
- Buildings constructed
-
- In the future
- Erosion continues
- Development? ? ?
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18Advice
- Beach is disaster-prone
- Move away!