Geomorphometry of Antarctic Periglacial Territories
- Authors: Florinsky I.V1
-
Affiliations:
- Institute of Mathematical Problems of Biology, Keldysh Institute of Applied Mathematics, Russian Academy of Sciences
- Issue: Vol 89, No 6 (2025)
- Pages: 884–898
- Section: Modern Quantitative and Process Geomorphology
- URL: https://bakhtiniada.ru/2587-5566/article/view/381951
- DOI: https://doi.org/10.7868/S2658697525060023
- ID: 381951
Cite item
Abstract
Currently, the rigor and reproducibility of topographic studies is ensured by geomorphometry. This discipline emerged at the intersection of photogrammetry, geoinformatics, and computational mathematics. It has a well-developed physical and mathematical theory, as well as a powerful computational apparatus. Geomorphometric methods are used to solve a wide range of multiscale problems within the field of geoscience. Geomorphometric modeling of Antarctic periglacial territories, such as oases, ice-free islands and mountains, is necessary to obtain new knowledge about quantitative characteristics of the topography of these unique territories as well as further use of morphometric information. This article considers three typical Antarctic periglacial territories: the Cape Burks Oasis (Marie Byrd Land), Haswell Island (Queen Mary Land), and Leningradsky Nunatak (Oates Land). Geomorphometric modelling and mapping of these territories were carried out for the first time. We used three fragments of the Reference Elevation Model of Antarctica (REMA) as input data, with grid spacings of 2 and 8 metres. We calculated digital models using three DEMs and presented a series of maps of the ten most important morphometric variables in fundamental and applied terms. The list of variables includes slope gradient, slope aspect, horizontal curvature, vertical curvature, minimal curvature, maximal curvature, wind exposition index, catchment area, topographic wetness index, and stream power index. Interpretations of the obtained maps are given and their possible use is described. The study was carried out within the framework of a project to create a physical-geographical thematic scientific reference geomorphometric atlas of ice-free territories of the Antarctic.
About the authors
I. V Florinsky
Institute of Mathematical Problems of Biology, Keldysh Institute of Applied Mathematics, Russian Academy of Sciences
Email: iflor@mail.ru
Pushchino, Russia
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