CETN IV-21
December 1999
EXAMPLE APPLICATION: This example illustrates the steps taken to assign tidal
constituents to an ocean boundary on an ADCIRC grid within the SMS. A grid has been
developed and requires specification of the ocean boundary and the tidal constituents. The steps
are described in the following paragraphs.
1. Define a Nodestring for the Ocean Boundary. To set up a nodestring for the ocean
boundary, click on the "Create Nodestring Tool" icon located on the left side of the screen in the
ADCIRC module, as shown in Figure 1. Click the mouse on a boundary node that is located at
the interface between land and ocean, as shown in Figure 1. Depress the Control key and double-
click on the opposite land-water interface boundary node. SMS proceeds from the first boundary
node counterclockwise around the grid boundary to the second and will display the newly
created nodestring. If the ocean boundary is clockwise from the first boundary node, depress the
Shift key as well as the Control key.
Land-Ocean Interface Node
Create Nodestring Tool
Land-Ocean
Interface Node
Figure 1. Graphical information for creating a nodestring on the ocean boundary
2. Specify Nodestring as an Ocean Boundary. Assigning the nodestring as an ocean
boundary requires selecting the nodestring and specifying the boundary type. To select the
nodestring, click on the "Select Nodestring Tool" (Figure 2). Boxes that represent each
nodestring will appear on the grid, as shown in Figure 2. To select the ocean boundary
nodestring, click on its box.
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