Improvements in 3D digital mapping for geomorphological and Quaternary geological cartography

Ambrosi, Christian and Scapozza, Cristian (2015) Improvements in 3D digital mapping for geomorphological and Quaternary geological cartography. Geographica Helvetica, 70. pp. 121-133. (In Press)

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Abstract

In recent decades, GIS tools have been directly applied to photo-interpretative geomorphological and geological mapping. Although these tools are powerful and effective tools in the creation of digital maps, it is often very difficult to obtain a correct recognition of the nature and boundaries of geomorphological landforms using two-dimensional images. In addition, the output typically requires some improvements, usually by means of field verifications or using oblique field photographs. The aim of this paper is to present the ArcGDS™ tool, which allows the direct exploitation, visualization and digitization of stereoscopic digital linear scanned images(e.g. digital image strips,©swisstopo). Through two case studies, we show how 3-D digital mapping makes it possible to produce Quaternary geological and geomorphological maps with a limited complementary fieldwork approach and to provide a quantitative assessment of surface deformations through the acquisition of precise elevation coordinates. Combined with high-resolution digital elevation models, ArcGDS™ is a powerful tool, particularly over large areas, as well as under forest cover and on very steep slopes.

Item Type:	Scientific journal article, Newspaper article or Magazine article
Subjects:	Physical sciences > Geology > Earth science > Quaternary studies Physical sciences > Geology > Geohazards Physical sciences > Physical geographical sciences > Physical geography > Remote sensing
Department/unit:	Dipartimento ambiente costruzioni e design > Istituto scienze della Terra
Depositing User:	Cristian Scapozza
Date Deposited:	17 Apr 2015 11:40
Last Modified:	23 May 2016 08:30
URI:	http://repository.supsi.ch/id/eprint/5750

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