This paper examines the recent emergence of integrated coastal zone management as an application for the gathering, management and distribution of geospatial data. The requirements of a geospatial database of the coastal zone are outlined and the contribution of digital photogrammetry is examined. A saltmarsh monitoring project, which uses digital photogrammetry and was initiated by the authors, is described.
The role of photo‐interpretation in topographic map production is examined in an attempt to show how this phase of the work influences the total procedure. The advantages of a separate photo‐interpretation phase are explained.
An examination of the need for map revision and the methods currently used allows the identification of problems specific to this operation. It is suggested that many instruments, old and new, suitable for new map production do not solve the problems associated with map revision. The main characteristics of instruments designed for map revision in the future are outlined, with the suggestion that the time has now come for instruments to be designed specifically for the map revision task, rather than practitioners having to devise revision procedures to suit existing equipment.
FROM time to time, rounded, mammillated, and egg-shaped stones have been dredged from the bottom of Wick Harbour, many of which are remarkably symmetrical in form. They vary in diameter from four or five inches to about a foot and a half. These stones have attracted the attention of many persons in Wick interested in natural science, and were brought to my notice by Bailie D. R. Simpson, of Wick, who has a large collection of them in his garden (Plate XII.).Bailie Simpson has suggested that their occurrence in the boulder-clay in the bottom of the harbour is due to transporta tion eastwards by the pr'eglacial Wick River. He attributes their peculiar shape to grinding in potholes in the preglacial river bed. He also notes that the sandstone of which they are composed is not seen in situ near Wick, so that they must have been brought from a distance.After a close inspection of the stones in Bailie Simpson's garden, I have come to a different conclusion for the following reasons. First-all the stones without exception are composed of the same rock, a yellowish or greyish micaceous sandstone. If they had been a collection of pothole stones carried by a river from a distance, we would have expected some variation in their composition. Secondly-though some are egg-shaped and smooth, others are not so, but show peculiar projections in dicating that their form cannot have been acquired by grinding in potholes. One specimen in particular shows a number of concentric sunken lines, and one at least is mammillated in the fashion often seen in calcareous sandstones.These facts in my opinion indicate that their outward form is due rather to concretionary action than to grinding in potholes.These stones are composed of a light greyish or yellow sand stone, unlike any of the Old Red Sandstone rocks seen in situ in the neighbourhood, or in the very perfect coast sections north and south of Wick; but it does resemble a sandstone containing Jurassic fossils found in the boulder-clay all over the east coast of Caithness. Attention to the glacial phenomena of the district shows clearly that these Jurassic rocks have been July 16, 2015 at West Virginia University on http://trned.lyellcollection.org/ Downloaded from
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