Page 77 - Kennemerland VOC ship, 1664 - Published Reports

K. MUCKELROY: HISTORIC WRECK SITES
I 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 20 A 5 13 3 17 4 14 I1 12 7 10 2 18 16 20 I 8 19 9 15 6 I I1 10 4 13 I 8 12 14 18 15 3 19 9 20 2 17 5 6 7 16 2 3 7 8 10 I 5 2 14 12 9 4 13 I1 16 17 15 I8 19 20 6
3 8 6 10 12 5 4 2 13 3 19 I 7 17 9 18 14 15 16 20 II 4 14 15 I2 8 I 13 20 7 19 3 17 5 10 6 2 18 16 I1 9 4 5 12 10 7 19 18 6 14 15 I 16 4 9 5 17 20 2 II 3 13 8 6 2 6 15 10 13 7 18 16 I 19 9 17 8 12 20 3 5 4 14 II 7 14 9 II 15 16 7 19 18 I 17 6 12 5 13 20 2 4 3 10 8 8 10 13 8 4 20 18 17 12 3 15 2 16 14 19 I 9 6 7 5 II 9 6 I1 3 18 4 14 16 12 5 7 2 17 9 20 I 8 19 15 13 10 10 9 15 4 13 5 12 16 19 6 7 2 17 8 18 I 3 20 14 II 10 I1 5 15 3 18 6 14 9 10 20 12 I 16 8 17 2 4 19 II 13 7
Figure 2. The matrix in which the archaeological survival characteristics (row A) and the 11 environmental site attributes (rows 1 to 11) are ranked across the 20 sites located in Fig. 1. The descriptions of the 11 attributes are given in Section 3.
finest possible discrimination in the considera- tion of essentially qualitative attributes, such as the nature of the sea-bed, whilst minimizing the loss of information within those attributes for which ratio scales are available, for example, fetch or depth. The values of tau produced for each of the 11 correlations are given in Fig. 3, along with the 5%and 0.1% significancelevels.
The 11 environmental attributes are defined as follows:
1. Maximum offshore fetch, within 30' of the perpendicular to the coast.
2. Sea horizon from the site; i.e. sector within which there is more than 10km of open water.
3. Percentage of hours during which there are winds of Force 7 or more from directions within the sea horizon.
9. Underwater topography; the proportion of the site in which the sea-bed consists of geologically recent sedimentary deposits.
10. Nature of coarsest material within these sedimentary deposits.
11. Nature of finest material within these sedimentary deposits. In ordering sites of this attribute, and on attribute number 10, they have been ranked initially accord- ing to broad categories of material (e.g. large boulders, sand, silt, etc.), and then according to the relative importance of these deposits on the different sites.
An attempt was made to include considera- tion of the possible importance of algae cover on a site, but this factor has had to be omitted since ranking has proved impossible; it is either present on a site, or it isn't. In every case, the extent of a site has been defined as the area
4. Maximum speed of tidal streams across enclosing every single object which can reason-
site.
5. Minimum depth of site.
6. Maximumdepthofsite.
7. Depth of principal deposit on site.
8. Average slope of the sea-bed over the
whole site.
ably be identified as coming from the vessel concerned; in other words, the maximum possible area has been taken.
4. Assessment of the environmental factors
The most outstanding characteristic of Fig. 3 is
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