380
K. A. Jenner et al.
and u/u/u relationships seem to occur more frequently along the south coast. These
data tend to support the observations for binary relationships presented above.
Binary sequence relationships were tabulated for three bays containing coarse
clastic barriers to determine whether specific relationships of coastal form 'type' and
material 'supertype' characterized the bays. These data are presented in Fig. 5. Within
the three bays no specific coastal form 'type' and material 'supertype' relationship
predominates; however, two binary relationship trends are prevalent. The solid
cliff/solid outcrop (csos) relationship identified in Fig. 3 also occurs most frequently in
Holyrood and Biscay Bays. In Mall Bay this relationship represents the third most
frequently occurring relationship; unconsolidated beach/solid cliff (bucs) is the most
frequently occurring relationship and reflects the higher number of pocket beaches
along this section of coast. The second most frequently occurring relationships in all
three areas are those containing unconsolidated cliffs. In Holyrood Bay, unconsolidated
beach/unconsolidated cliff (bucu) and unconsolidated cliff/unconsolidated slope (culu)
account for about 17 and 14 percent of the binary relationships respectively, whereas in
Biscay Bay unconsolidated cliff/solid outcrop (cuos) accounts for 14 percent of the
binary relationships. In Mall Bay unconsolidated beach/unconsolidated cliff (bucu)
represents roughly 15 percent of all binary relationships. The higher percentages of
binary relationships containing unconsolidated cliffs suggest that these cliffs may be
potential sources for the clastic barriers.
A further example of using adjacency relationships was explored with the
OVERLAYEVENTS command. This command was used to identify coastal units and
selected attributes within a 10 km and 4 km along-shore extent from coastal units with
the form 'barrier.' Two new database or event tables were created by selecting only the
Précédent

- 387/596

Suivant