372
K. A. Jenner et al.
discussed the application of dynamic segmentation to the coastal zone and McCall
(1995) and Sherin and Edwardson (1997) demonstrated the application of dynamic
segmentation for County Cork, Eire and the Atlantic Provinces of Canada respectively.
Dynamic segmentation was implemented for coastal zone data storage at the
GSC Atlantic, in the summer of 1994, with the development of the ArcInfo -based CIS
(Sherin and Edwardson, 1994; Sherin and Edwardson, 1997). Using dynamic
segmentation, the coast is modelled as a single, linear spatial object with a distance
referencing system. The purpose of this chapter is to further explore the use of dynamic
segmentation in the query of binary and tertiary adjacency relationships between
coastal geomorphologic features from the southeastern coast of Newfoundland,
Canada. Three queries are presented. The first explores binary and tertiary sequencing
between geomorphologically dissimilar sections of coast. The second explores binary
relationships within three bays with a similar coastal geomorphology including coarse
clastic bayhead barrier beaches. In addition, the OVERLAYEVENTS command is
used to search for coastal form and material within two specified linear extents from
the coastal form 'barrier.'
Mapping
The coastal classification developed at the GSC Atlantic builds largely upon the
existing classifications of Howes et al. (1994) and Owens (1994). Coastal units are
categorized by 'form' and 'material' and are subdivided into 'solid' and 'unconsolidated'
supertypes. These supertypes are further subdivided into types and each type may
contain one or more subtypes and one or more features, in addition to a height class
designation.
Line and point data for the nearshore, foreshore and backshore are interpreted
from oblique aerial video surveys of the coastline. Where available, vertical aerial
photographs, 35 mm photographs and groundtruth data are used to supplement video
survey interpretation. These data are then entered into the database using a 'heads-up'
digitizing method which was developed at the GSC Atlantic (Sherin and Edwardson,
1994).
Study Area
The study area is located along the southeast corner of the Avalon Peninsula,
Newfoundland, Canada (Fig. 1). It encompasses the coastline of nine, 1:50 000
National Topographic System (NTS) map sheets and spans 913 km along the
mainland. The study area is characterized by two geomorphologically distinct regions.
The east coast is dominated by steep, high (> 10 m) bedrock cliffs and irregular
bedrock outcrops with
K. A. Jenner et al.
discussed the application of dynamic segmentation to the coastal zone and McCall
(1995) and Sherin and Edwardson (1997) demonstrated the application of dynamic
segmentation for County Cork, Eire and the Atlantic Provinces of Canada respectively.
Dynamic segmentation was implemented for coastal zone data storage at the
GSC Atlantic, in the summer of 1994, with the development of the ArcInfo -based CIS
(Sherin and Edwardson, 1994; Sherin and Edwardson, 1997). Using dynamic
segmentation, the coast is modelled as a single, linear spatial object with a distance
referencing system. The purpose of this chapter is to further explore the use of dynamic
segmentation in the query of binary and tertiary adjacency relationships between
coastal geomorphologic features from the southeastern coast of Newfoundland,
Canada. Three queries are presented. The first explores binary and tertiary sequencing
between geomorphologically dissimilar sections of coast. The second explores binary
relationships within three bays with a similar coastal geomorphology including coarse
clastic bayhead barrier beaches. In addition, the OVERLAYEVENTS command is
used to search for coastal form and material within two specified linear extents from
the coastal form 'barrier.'
Mapping
The coastal classification developed at the GSC Atlantic builds largely upon the
existing classifications of Howes et al. (1994) and Owens (1994). Coastal units are
categorized by 'form' and 'material' and are subdivided into 'solid' and 'unconsolidated'
supertypes. These supertypes are further subdivided into types and each type may
contain one or more subtypes and one or more features, in addition to a height class
designation.
Line and point data for the nearshore, foreshore and backshore are interpreted
from oblique aerial video surveys of the coastline. Where available, vertical aerial
photographs, 35 mm photographs and groundtruth data are used to supplement video
survey interpretation. These data are then entered into the database using a 'heads-up'
digitizing method which was developed at the GSC Atlantic (Sherin and Edwardson,
1994).
Study Area
The study area is located along the southeast corner of the Avalon Peninsula,
Newfoundland, Canada (Fig. 1). It encompasses the coastline of nine, 1:50 000
National Topographic System (NTS) map sheets and spans 913 km along the
mainland. The study area is characterized by two geomorphologically distinct regions.
The east coast is dominated by steep, high (> 10 m) bedrock cliffs and irregular
bedrock outcrops with