Author
Lorenz Hurni
Other affiliations: École Polytechnique Fédérale de Lausanne
Bio: Lorenz Hurni is an academic researcher from ETH Zurich. The author has contributed to research in topics: Terrain & Geospatial analysis. The author has an hindex of 22, co-authored 153 publications receiving 2224 citations. Previous affiliations of Lorenz Hurni include École Polytechnique Fédérale de Lausanne.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the use of remote sensing data in landslides studies during the 1980s, 1990s and 2000s, including a discussion of its potential and research challenges as result of new operational and forthcoming technologies.
480 citations
TL;DR: A method based on a series of geometric transformations is presented, which transforms control points of a modern reference map to the coordinate system of an old map, which helps to assess the geometric accuracy of historical geographical information before using the data for geo-historical studies.
128 citations
111 citations
01 Jan 2009
TL;DR: In this paper, the authors deal with two main questions: Firstly, how to map narratives and their complex spatial structure? Secondly, what do we achieve by mapping literature? By searching for some (provisional) answers, the horizon of a promising interdisciplinary research field (a future literary geography) becomes visible.
Abstract: Modern cartography has the ability to map almost any phenomenon for which spatial relationships are of primary relevance. While existing cartographic products cover already an enormous variety of topics, the visualisation of ‘other’ geographies gains more and more attention. These other geographies may not accord to the ‘normal’ spaces usually mapped, hence cartography is both challenged and forced to find uncommon solutions. Literature and its fictional spaces might serve as a fi ne example (but one could also think of soundscapes or emotions). Doubtlessly, the realm of fiction is defined by different ‘rules’ to the geography that cartography customarily addresses. This paper deals with two main questions: Firstly, how to map narratives and their complex spatial structure? Secondly, what do we achieve by mapping literature? By searching for some (provisional) answers, the horizon of a promising interdisciplinary research field – a future literary geography – becomes visible.
88 citations
TL;DR: In this article, the main aim was the orthorectification of a 1-m resolution pan-sharpened IKONOS Geo image of Nisyros island in Greece.
Abstract: Georeferenced high-resolution satellite images can be used for acquisition of topographic information, navigation and visualisation for various environmental studies. The present study is part of the multidisciplinary EU project GEOWARN related to monitoring, warning and emergency planning for volcanic hazards in the island of Nisyros, Greece. Here, the main aim was the orthorectification of a 1-m resolution pan-sharpened IKONOS Geo image of Nisyros island. For the orthorectification, a digital elevation model (DEM) with a cell size of 2 m and an RMS accuracy of ca. 3.5 m was used, as well as 38 selected ground control points (GCPs) measured with differential GPS. An object-to-pixel space transformation using the ground control points was computed using two different models, a relief-corrected affine transformation and the polynomial mapping functions of Kratky. These transformations were used for orthorectification and the orthophoto accuracy was evaluated using GCPs as check points. Postprocessing for radiometric improvement of the orthophotos was applied. The orthophoto and the DEM served as basic tools for subsequent base mapping and visualisation. D 2002 Elsevier Science B.V. All rights reserved.
82 citations
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TL;DR: In this article, the authors outline the principles for landslide mapping, and review the conventional methods for the preparation of landslide maps, including geomorphological, event, seasonal, and multi-temporal inventories.
1,290 citations
TL;DR: In this article, a review of the trends in collecting spatial information on environmental factors with a focus on Digital Elevation Models, geology and soils, geomorphology, land use and elements at risk is given.
986 citations
01 Jan 2011
TL;DR: The GMTED2010 layer extents (minimum and maximum latitude and longitude) are a result of the coordinate system inherited from the 1-arcsecond SRTM.
Abstract: For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1–888–ASK–USGS. For an overview of USGS information products, including maps, imagery, and publications, Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. 10. Diagram showing the GMTED2010 layer extents (minimum and maximum latitude and longitude) are a result of the coordinate system inherited from the 1-arc-second SRTM
802 citations
Polytechnic University of Catalonia1, University of Twente2, University of Milan3, University of Salerno4, Centre national de la recherche scientifique5, Aristotle University of Thessaloniki6, University of Florence7, Transport Research Laboratory8, Technical University of Madrid9, Golder Associates10
TL;DR: In this article, the authors present recommended methodologies for the quantitative analysis of landslide hazard, vulnerability and risk at different spatial scales (site-specific, local, regional and national), as well as for the verification and validation of the results.
Abstract: This paper presents recommended methodologies for the quantitative analysis of landslide hazard, vulnerability and risk at different spatial scales (site-specific, local, regional and national), as well as for the verification and validation of the results. The methodologies described focus on the evaluation of the probabilities of occurrence of different landslide types with certain characteristics. Methods used to determine the spatial distribution of landslide intensity, the characterisation of the elements at risk, the assessment of the potential degree of damage and the quantification of the vulnerability of the elements at risk, and those used to perform the quantitative risk analysis are also described. The paper is intended for use by scientists and practising engineers, geologists and other landslide experts.
776 citations