Summary
Contents
Subject index
Geomorphology is the study of the Earth's diverse physical land surface features and the dynamic processes that shape these features. Examining natural and anthropogenic processes, The SAGE Handbook of Geomorphology is a comprehensive exposition of the fundamentals of geomorphology that examines form, process, and history in the discipline. Organized into four sections, the Handbook is an overview of foundations and relevance, including the nature and scope of geomorphology, the origins and development of geomorphology, the role and character of theory in geomorphology, the significance of models and abstractions to geomorphology; techniques and approaches, including geomorphological mapping, field observations and experimental design, remote sensing in geomorphology, quantifying rates of erosion, measuring fluid flows and sediment fluxes, dating surfaces and sediment, GIS in geomorphology, and modelling landforms and processes; process and environment, including rock weathering, the evolution of regolith, hill slopes, riverine environments, glacial environments, periglacial environments, coastal environments, desert environments, karst landscapes, environmental change and anthropogenic activity; and environmental change, including geomorphology and environmental management, geomorphology and society, and planetary geomorphology.
Geomorphological Mapping
Geomorphological Mapping
Mapping of landforms is probably as old as the making of maps. Mountain ranges, volcanoes and plains all appear on early representations of land. Often the mountains were represented as hachures or ‘hairy caterpillars’, the depiction of which reached a high art form with the maps of Erwin J. Raisz (e.g. Raisz, 1951, see also Robinson, 1970) and A.K. Lobeck (e.g. 1957) (Plate 3a, page 589). These maps were compiled according to set standards, and specified symbols were used. Subsequently there have been several attempts to set standardized symbols and methods, especially by the International Geographical Union (IGU) (e.g. Leszczycki, 1963; International Geographical Union, 1968). This was driven, in part, by the complexity of information that can be presented on one or more of the following key topics: morphometry (shape/location), morphogenesis (evolution, including geological control), morphochronology (relative and absolute age) and morphodynamics (genesis and processes).
More recently there have been several developments related to geomorphic mapping using polygons rather than symbols (Plate 3b and c, page 589). Land systems mapping (Christian and Stewart, 1953) and regolith landform mapping (Pain et al., 2001) provide examples. However, over the past two or three decades geomorphic maps as such have not been a major part of the study of landforms (Gustavsson, 2006; Gustavsson et al., 2006), a circumstance underlined by the formation of the International Association for Geomorphology (IAG) Working Group on Applied Geomorphic Mapping (AppGeMa – Pain et al., 2008) and publication of a technical handbook on the topic (Smith et al., in press).
This chapter briefly reviews the development of geomorphic mapping, outlines its present status, considers the main issues and looks at likely future developments.
Retrospective
There is a considerable literature on geomorphic maps, and reviews can be found in Fairbridge (1968), Cooke and Doornkamp (1990), Mitchell (1991), Goudie (1981, 2004) and Verstappen (in press). We can make a very broad distinction between maps that (1) use symbols, shading and colours to depict landforms and (2) those that use polygons that represent specific types of landforms. The former were developed before geographic information systems (GIS) came into widespread use, and the maps of Raisz and Lobeck have already been mentioned. The latter were also developed before GIS, but are more amenable to GIS manipulation and therefore may have become more common over the past two or three decades. Certainly, in Australia, polygon maps of landforms and related phenomena are routinely converted into digital GIS coverages as part of the collection of legacy data for new projects (e.g. Fitzpatrick et al., 2004).
The IGU Subcommission on Geomorphological Mapping sponsored a series of conferences and publications in the 1960s and 1970s. These set out a recommended set of symbols and colours for mapping at mainly detailed scales. Examples of maps and mapping systems are Bondesan et al. (1989), Castiglioni et al. (1990), Gullentops (1964), Joly (1962), Tricart and Usselmann (1967) and van Zuidam (1982). Morphological mapping (Waters, 1958) played an important part during this period; Savigear (1965) was perhaps the best known example, with Rose and Smith (2008) providing historical context. Brunsden et al. (1975) provide several fine examples of the application of morphological maps to site investigations for highway construction. During this period geomorphic maps using symbols were a common feature of many papers, even where the main topic was not mapping but some other systematic aspect of geomorphology. For example, de Dapper et al. (1989) used a geomorphic map to illustrate a paper on using SPOT imagery to map land degradation.
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