caa a22 4500 469025883 CHVBK 20180323132729.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF00185102 doi (NATIONALLICENCE)springer-10.1007/BF00185102 Nesje Atle Department of Geography, University of Bergen, Breiviken 2, N-5035, Bergen-Sandviken, Norway aut Topographical effects on the equilibrium-line altitude on glaciers [Elektronische Daten] [Atle Nesje] The most common approaches used to calculate the equilibrium-line altitude (ELA) on former glaciers are: a) the maximum elevation of lateral moraines (MELM), b) the median elevation of glaciers (MEG), c) the toe-to-headwall altitude ratio (THAR), and d) the ratio of the accumulation area to the total area (AAR), of which the AAR method is considered to be the most accurate. A theoretical evaluation of the AAR approach, using changing slope angles and valley morphology on idealized glaciers at two different positions, shows that glaciers advancing into flat areas underestimate the ELA depression, while glaciers moving into areas of increasing slope angle, overestimate the ELA difference. Therefore, topographical and morphological effects on calculated ELA depressions on glaciers must be carefully evaluated. Kluwer Academic Publishers, 1992 GeoJournal Kluwer Academic Publishers 27/4(1992-08-01), 383-391 0343-2521 27:4<383 1992 27 10708 https://doi.org/10.1007/BF00185102 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00185102 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Nesje Atle Department of Geography, University of Bergen, Breiviken 2, N-5035, Bergen-Sandviken, Norway aut NATIONALLICENCE 773 0- GeoJournal Kluwer Academic Publishers 27/4(1992-08-01), 383-391 0343-2521 27:4<383 1992 27 10708 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer