Glacier inventory and recent variations of Santa Inés Icefield, Southern Patagonia
The study of glaciers in remote regions improves our understanding of global glacier change. With an area of 149.31 ± 1.84 km2, the Santa Inés Icefield constitutes one of the largest and least studied and explored glaciated areas of Southern Patagonia. We study the extent and glacier variations of t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Arctic, Antarctic, and Alpine Research |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/15230430.2022.2071793 |
| _version_ | 1817979547605270528 |
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| author | Isaac Gurdiel Camilo Rada Philipp Malz Matthias Braun Gino Casassa |
| author_facet | Isaac Gurdiel Camilo Rada Philipp Malz Matthias Braun Gino Casassa |
| author_sort | Isaac Gurdiel |
| collection | DOAJ |
| description | The study of glaciers in remote regions improves our understanding of global glacier change. With an area of 149.31 ± 1.84 km2, the Santa Inés Icefield constitutes one of the largest and least studied and explored glaciated areas of Southern Patagonia. We study the extent and glacier variations of the Santa Inés Icefield over the last 75 years, and we generate the most detailed glacier inventory to date of its 24 constituting glaciers. We estimate surface elevation changes between 2000 and 2014 using Shuttle Radar Topography Mission (SRTM) and TanDEM-X digital elevation models. Our results show a generalized trend of retreat, with a glacier area loss of −9.78 ± 1.52 km2 between 1998 and 2020, with annual rate increase from −0.15 ± 0.01 km2 a−1 (1998–2005) to −0.58 ± 0.10 km2 a−1 (2005–2020), and an average thinning of 0.60 ± 0.26 m a−1 (2σ) between 2000 and 2014. No clear correlation was found between retreat or thinning rates and Accumulation Area Ratio (AAR), terminus slope, aspect, or glacier type. While ERA5 reanalysis data shows no significant climatic trends in temperature or precipitation, a small warming trend below our detection record is the most likely cause of the observed retreat and thinning of the Santa Inés Icefield. |
| first_indexed | 2024-04-13T22:44:07Z |
| format | Article |
| id | doaj.art-d34a7916bf814ccca81a98b03e127b47 |
| institution | Directory Open Access Journal |
| issn | 1523-0430 1938-4246 |
| language | English |
| last_indexed | 2024-04-13T22:44:07Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Arctic, Antarctic, and Alpine Research |
| spelling | doaj.art-d34a7916bf814ccca81a98b03e127b472022-12-22T02:26:29ZengTaylor & Francis GroupArctic, Antarctic, and Alpine Research1523-04301938-42462022-12-0154120222010.1080/15230430.2022.2071793Glacier inventory and recent variations of Santa Inés Icefield, Southern PatagoniaIsaac Gurdiel0Camilo Rada1Philipp Malz2Matthias Braun3Gino Casassa4Centro de Investigación Gaia Antártica, Universidad de Magallanes, Punta Arenas, ChileCentro de Investigación Gaia Antártica, Universidad de Magallanes, Punta Arenas, ChileFriedrich-Alexander-Universität Erlangen-Nürnberg, Institut für Geographie, Erlangen, GermanyFriedrich-Alexander-Universität Erlangen-Nürnberg, Institut für Geographie, Erlangen, GermanyCentro de Investigación Gaia Antártica, Universidad de Magallanes, Punta Arenas, ChileThe study of glaciers in remote regions improves our understanding of global glacier change. With an area of 149.31 ± 1.84 km2, the Santa Inés Icefield constitutes one of the largest and least studied and explored glaciated areas of Southern Patagonia. We study the extent and glacier variations of the Santa Inés Icefield over the last 75 years, and we generate the most detailed glacier inventory to date of its 24 constituting glaciers. We estimate surface elevation changes between 2000 and 2014 using Shuttle Radar Topography Mission (SRTM) and TanDEM-X digital elevation models. Our results show a generalized trend of retreat, with a glacier area loss of −9.78 ± 1.52 km2 between 1998 and 2020, with annual rate increase from −0.15 ± 0.01 km2 a−1 (1998–2005) to −0.58 ± 0.10 km2 a−1 (2005–2020), and an average thinning of 0.60 ± 0.26 m a−1 (2σ) between 2000 and 2014. No clear correlation was found between retreat or thinning rates and Accumulation Area Ratio (AAR), terminus slope, aspect, or glacier type. While ERA5 reanalysis data shows no significant climatic trends in temperature or precipitation, a small warming trend below our detection record is the most likely cause of the observed retreat and thinning of the Santa Inés Icefield.https://www.tandfonline.com/doi/10.1080/15230430.2022.2071793Glacier inventoryrecent variationsPatagonia |
| spellingShingle | Isaac Gurdiel Camilo Rada Philipp Malz Matthias Braun Gino Casassa Glacier inventory and recent variations of Santa Inés Icefield, Southern Patagonia Arctic, Antarctic, and Alpine Research Glacier inventory recent variations Patagonia |
| title | Glacier inventory and recent variations of Santa Inés Icefield, Southern Patagonia |
| title_full | Glacier inventory and recent variations of Santa Inés Icefield, Southern Patagonia |
| title_fullStr | Glacier inventory and recent variations of Santa Inés Icefield, Southern Patagonia |
| title_full_unstemmed | Glacier inventory and recent variations of Santa Inés Icefield, Southern Patagonia |
| title_short | Glacier inventory and recent variations of Santa Inés Icefield, Southern Patagonia |
| title_sort | glacier inventory and recent variations of santa ines icefield southern patagonia |
| topic | Glacier inventory recent variations Patagonia |
| url | https://www.tandfonline.com/doi/10.1080/15230430.2022.2071793 |
| work_keys_str_mv | AT isaacgurdiel glacierinventoryandrecentvariationsofsantainesicefieldsouthernpatagonia AT camilorada glacierinventoryandrecentvariationsofsantainesicefieldsouthernpatagonia AT philippmalz glacierinventoryandrecentvariationsofsantainesicefieldsouthernpatagonia AT matthiasbraun glacierinventoryandrecentvariationsofsantainesicefieldsouthernpatagonia AT ginocasassa glacierinventoryandrecentvariationsofsantainesicefieldsouthernpatagonia |