- Information about Andy Turner's geomorphometrics research interests.
- Geomorphometrics are measures of the geometry, topography, shape or form of planetary physical horizons and their change over time.
- In other words, geomorphometrics are measures of the state and change in surface geometry of the physical horizons on planets.
- They are topographic measures that are useful in analysing shapes and surfaces and modelling how these might change over time.
- Fundamentally each geomorphometric is geographically variable, two examples are measures of slope and aspect: slope is the gradient and aspect is the way in which a slope is facing (i.e. the angle relative to some axis (usually the horizontal plane) over a given region).
- To help study erosion and land degradation I started to develop Java software for handling raster data and generating geomorphometrics in around 2003 as part of the DesertLinks project.
- In 2010 some of this software was used to attempt to classify different building roof types in an urban area dataset provided by Ordnance Survey as part of the UKBuildingGeometry project.
- Recently I have been encouraging some glaciologists to explore geomorphometrics for various parts of the world that they visit:
- I should link to some of the pretty pictures and provide more details of this in due course...
- I produced geomorphometrics using some elevation data for Mars thinking that it might help identify landscape processes and landforms, but I have sadly lost my way with that.
- In 2004 I began to draft an article about Developing and Using Geomorphometrics, but it remains a very sketchy draft:
- Currently, my best hope for writing this work up is with my glaciology collaborators.
References and Reading
- Geomorphometrics Wikipedia Article
- Albani M., Klinkenberg B., Andison D.W., Kimmins J.P. (2004)
The choice of window size in approximating topographic surfaces from Digital Elevation Models.
International Journal of Geographical Informaiton Science Vol. 18, No. 6, September,
pages 577-593. http://doi.org/10.1080/13658810410001701987
- - "Presents a general analytical method to estimate the propagation of elevation errors to
the principal derived topographic variables (slope, aspect and surface curvatures) as
calculated with the quadratic approximation method with variable evaluation window size of
Wood (1996). It expands the work of Florinsky (1998b) to incorporate evaluation windows of
sizes larger than 3x3, and considers spatially correlated elevation error." (Taken form
- Wood, J. D. (1996) The geomorphological characterisation of Digital Elevation Models.
PhD thesis, University of Leicester. (Bibliography)
- Aguilar J.A.P, Perez J.M.R., GIS (Idrisi) Analysis of Digital Elevation Models for the Extraction of Drainage Basin Geomorphometric Properties.
- Donker, N. H. W., 1992: Automatic extraction of catchment hydrologic properties from digital elevation data. ITC Journal 3, 257-265.
- Gardner, T. W., Connors Sasowshy, K. and Day, R. L., 1990: Automated extraction of geomorphometric properties from digital elevation data. Z. Geomorph. N. F. 80, 57-68.
- Garg, P.K. and Harrison, A. R., 1990: Quantitative representation of land-surface morphology from digital elevation models. In: Proceedings of the 4th international symposium on spatial data handling. Vol. 1, Zurich, 273-282.
- Evans I.S. (1972) General Geomorphometry, derivatives of altitude, and descriptive statistics. In Chorley R.J. (ed.) Spatial Analysis in Geomorphology. Mathuen & co ltd 17-92.
- Frauenfelder R., Schneider B. (2002) Geomorphometric modelling of rock Glaciers, an extended abstract
- Kokkas N.A., Miliaresis G.Ch. (2004) Geomorphometric mapping of Grand Canyon from the 1-degree USGS DEMs
- Korup O. (2003) Geomorphometric Characteristics of New Zealand landslide dams. Engineering Geology 73.1 May 2004 pp13-35
- Korup O. (2004) Geomorphic Hazard Assessmen of landslide dams in South Westland New Zealand: Fundamental Problems and approaches. Geomorphology 66.2 March 2005 pp167-188
- Horsch B. (2003) Modelling the spatial distribution of montane and subalpine forests in the central alps using digital elevation models. Ecological modelling 168.3 October 2003 pp267-282.
- Mark D. (1975) Geomorphometric parameters, a review and evaluation. Geographiska Annaler 57A 1461-1467.
- Pike R. (1995) Geomorphometry-process, practice and prospects. Zeitschrift. Geomorphologie N.F. Suppl. Bd 101:221-238
- Pike R.J. (1998) Web Resources Compiled For Terrain Modeling (https://web.archive.org/web/20090305134249/http://www.agu.org/eos_elec/97260e.html).
- Pike R.J. (2002) A Bibliography of Terrain Modelling (Geomorphometry), the Quantitative Representation of Topography Supplement 4.0 USGS Open File Report 02-465. (http://geopubs.wr.usgs.gov/open-file/of02-465/of02-465.pdf)
- Strahler, A. N., 1954: Quantitative geomorphology of erosional landscapes. 19th Intern. Geol. Cong., Algiers, 341-354.
- Fortey, R. (2004) The Earth: An Intimate History. Knopf/Random House. ISBN: 0375406263
- Thank you to all my collaborators that have worked with me on this over the years, particularly Steve Carver, Brian Irvine, Jianhui Jin, Sadhvi Selveraj, Scott Watson, Owen King, Mark Smith, Duncan Quincey and Jonathan Carrivick.