|
Below is a false color image of Garden City-Surfside Beach, where the colors on the image represent the data values — in this case, elevation. The term "false color" simply means that the image is not a photograph, and that you should use the color bar on the image to interpret what the colors mean. The LIDAR sensor will map any structure on or around the beach. Note the protruding fishing pier, a common feature along the South Carolina coast. You can make a similar image using the BeachMapper software application provided on the second volume of this CD-ROM set. For more information about the BeachMapper Application, click here.
|
|
Portable Document Format (PDF) maps have been created to show LIDAR data for South Carolina's beaches and islands. PDF maps will allow you to zoom in on the data and print the maps at better resolution. However, because of the intense density of the data, the PDF files will not draw properly from your browser. If you have Adobe Acrobat Reader® software installed on your computer, you can view the maps by navigating to the pdf/islands directory on this CD-ROM and double click on a file. A directory of maps is available in the readme.txt file. Adobe Acrobat Reader software has been provided on this CD-ROM.
To learn more about PDF documents and installing the software need to view them, click here.
The northernmost segment of the South Carolina coast consists of an arcuate strand or beach referred to as the Grand Strand. With the exception of Waites Island, the Grand Strand is nearly 50 miles of continuous beach broken by only a few inlets. This region is bounded to the north by Cape Fear, North Carolina and to the south by Cape Romaine, South Carolina. The crescent shaped shoreline is one of three major arcuate strands found along the Atlantic coast. The Grand Strand is not an island; rather, the beach is an extension of the mainland. The tidal range is less than 6 feet, so this section is classified as a microtidal coast. Microtidal shoreline characteristics are primarily determined by wind-driven waves. Wave direction follows a seasonal pattern; thus, the resulting longshore current drives sediment downcoast during the winter and upcoast during the summer. Alternating current direction gives rise to the arc shape of the shoreline.
Garden City is the southernmost coastal community in Horry County. This section of shoreline begins at Murrells Inlet and extends northward to the southern limit of the Town of Surfside Beach. Here the shoreline is in transition between mainland shore and barrier island and possesses such characteristics as spits backed by salt marsh. The southern half of Garden City is lacking in shore-protection structures while the northern half, between stations 4960 and 5030, is predominated by bulkheads and seawalls.
The town of Surfside Beach is a residential development dating back to the 1950s. The section of the Grand Strand from station 5100 to 5195 is unarmored and the average erosion rate is less than 1 foot per year. The city established its own setback ordinance before the state implemented its regulation. The setback may have reduced the impact of Hurricane Hugo to development in this area. However, the storm did erode the beach by 28 feet and emergency nourishment efforts were undertaken to renovate 1.3 miles of beach with 70,000 cubic yards of sand.
Beach profile surveys are conducted in the spring and fall at approximately 400 monitoring stations throughout the State of South Carolina. Various agencies participate in the beach profile collection, including The South Carolina Department of Health and Environmental Control (SCDHEC) Office of Ocean and Coastal Resource Management (OCRM), Coastal Carolina University, and the College of Charleston. The results of the surveys provide a snapshot of the beach face. Over time, these surveys can be compiled to determine if and how the profile of the beach is changing. Below is a map of the stations and a sample of the profiles that can be extracted from the data. The beach profile data compiled by OCRM is provided on the second volume of this CD-ROM set.
|
| *South Carolina Department of
Health and Environmental Control Office of Ocean and Coastal Resource Management |
 |
 |
For more information about South Carolina beach profiles see: South
Carolina's Annual State of the Beaches Report, April 1998,
SCDHEC OCRM, 1362 McMillian Ave. Suite 400, Charleston, SC 29405.
![[up arrow]](images/uparrow.gif){kind=small}