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Estimating local surface glacier mass balance from migration of the 1918 Katla eruption tephra layer on Sléttjökull, southern Iceland
We use the apparent horizontal shift of an englacial tephra layer outcrop to calculate local glacier mass balance on Sléttjökull, a lobe of Mýrdalsjökull in Southern Iceland. For this approach, the dipping angle of the englacial tephra layer in the glacier upstream of the outcrop and the flow veloci...
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| Published in: | Annals of glaciology 2023-09, Vol.64 (92), p.147-155 |
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| container_end_page | 155 |
| container_issue | 92 |
| container_start_page | 147 |
| container_title | Annals of glaciology |
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| creator | Hagg, Wilfried Mayer, Christoph Münzer, Ulrich Barbosa, Natalie Schuler, Hans-Martin Staudacher, Matthias |
| description | We use the apparent horizontal shift of an englacial tephra layer outcrop to calculate local glacier mass balance on Sléttjökull, a lobe of Mýrdalsjökull in Southern Iceland. For this approach, the dipping angle of the englacial tephra layer in the glacier upstream of the outcrop and the flow velocity of the ice need to be known. An earlier investigation was expanded by the application of ground-penetrating radar, detecting the depth of the tephra along tracks with a total length of 10 km. Interpolation between the tracks enables us to derive the dipping angle of the layer along several flow lines. Together with glacier surface velocities, determined from feature tracking, we are able to estimate the local surface mass balance from the horizontal displacement of the tephra outcrop using freely available satellite imagery without additional fieldwork. The earlier local balance series was extended to the period 2014/15 to 2019/20. Although the results for the individual profiles differ slightly from each other, they show the same temporal pattern and clear variations from year to year. The results are compared to traditional mass-balance data from Hofsjökull. The two series show a good agreement in their interannual variability. |
| doi_str_mv | 10.1017/aog.2022.1 |
| format | article |
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For this approach, the dipping angle of the englacial tephra layer in the glacier upstream of the outcrop and the flow velocity of the ice need to be known. An earlier investigation was expanded by the application of ground-penetrating radar, detecting the depth of the tephra along tracks with a total length of 10 km. Interpolation between the tracks enables us to derive the dipping angle of the layer along several flow lines. Together with glacier surface velocities, determined from feature tracking, we are able to estimate the local surface mass balance from the horizontal displacement of the tephra outcrop using freely available satellite imagery without additional fieldwork. The earlier local balance series was extended to the period 2014/15 to 2019/20. Although the results for the individual profiles differ slightly from each other, they show the same temporal pattern and clear variations from year to year. The results are compared to traditional mass-balance data from Hofsjökull. The two series show a good agreement in their interannual variability.</description><identifier>ISSN: 0260-3055</identifier><identifier>EISSN: 1727-5644</identifier><identifier>DOI: 10.1017/aog.2022.1</identifier><language>eng</language><publisher>Cambridge, UK: Cambridge University Press</publisher><subject>Ablation ; Dipping ; Fieldwork ; Flow velocity ; Glacier flow ; Glacier mass balance ; Glacier monitoring ; Glacier velocities ; Glaciers ; Ground penetrating radar ; ice cap ; Interannual variability ; Interpolation ; Mass balance ; Mass balance of glaciers ; mass-balance reconstruction ; Outcrops ; Radar ; radio-echo sounding ; Satellite imagery ; Satellite tracking ; Surface velocity ; Tephra</subject><ispartof>Annals of glaciology, 2023-09, Vol.64 (92), p.147-155</ispartof><rights>Copyright © The Author(s), 2023. Published by Cambridge University Press</rights><rights>Copyright © The Author(s), 2023. Published by Cambridge University Press. This work is licensed under the Creative Commons Attribution License This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited. (the “License”). 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Glaciol</addtitle><description>We use the apparent horizontal shift of an englacial tephra layer outcrop to calculate local glacier mass balance on Sléttjökull, a lobe of Mýrdalsjökull in Southern Iceland. For this approach, the dipping angle of the englacial tephra layer in the glacier upstream of the outcrop and the flow velocity of the ice need to be known. An earlier investigation was expanded by the application of ground-penetrating radar, detecting the depth of the tephra along tracks with a total length of 10 km. Interpolation between the tracks enables us to derive the dipping angle of the layer along several flow lines. Together with glacier surface velocities, determined from feature tracking, we are able to estimate the local surface mass balance from the horizontal displacement of the tephra outcrop using freely available satellite imagery without additional fieldwork. The earlier local balance series was extended to the period 2014/15 to 2019/20. 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The two series show a good agreement in their interannual variability.</description><subject>Ablation</subject><subject>Dipping</subject><subject>Fieldwork</subject><subject>Flow velocity</subject><subject>Glacier flow</subject><subject>Glacier mass balance</subject><subject>Glacier monitoring</subject><subject>Glacier velocities</subject><subject>Glaciers</subject><subject>Ground penetrating radar</subject><subject>ice cap</subject><subject>Interannual variability</subject><subject>Interpolation</subject><subject>Mass balance</subject><subject>Mass balance of glaciers</subject><subject>mass-balance reconstruction</subject><subject>Outcrops</subject><subject>Radar</subject><subject>radio-echo sounding</subject><subject>Satellite imagery</subject><subject>Satellite tracking</subject><subject>Surface velocity</subject><subject>Tephra</subject><issn>0260-3055</issn><issn>1727-5644</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>PIMPY</sourceid><sourceid>DOA</sourceid><recordid>eNptkcFu1DAQhiMEEkvhwhNY4oaaZcZO4uSIqkJXVOIAnK2JY6dZnHixnUOfoM_CC_ACfbF6uxVcOI3m9z_fePQXxVuELQLKD-THLQfOt_is2KDksqybqnpebIA3UAqo65fFqxj3AAIAmk1xdxnTNFOalpE5r8mxuAZL2rDRkZ5MYDPFyHpytGTRBj-zeRpDnvAL85alG8Oww5Z9oeSImbAeHp-SOdwEYo5uMyP339z975T2939-rs6ds-jXPBkWttMmo4fXxQtLLpo3T_Ws-PHp8vvFVXn99fPu4uN1qXkrU2kl9MJQ3RMKqNAgStlKktJaLQfKBw_YGTD6qLe2hr7Tg65NI2RFHEicFbsTd_C0V4eQbw-3ytOkHgUfRkUhTdoZBR3ggK2xjekrSdRzjaYeatn1HIeGZ9a7E-sQ_K_VxKT2fg1L_r4SKATKWlRVdr0_uXTwMQZj_25FUMfQVA5NHUNTmM3nT2aa-zANo_nH_I_9AWqtmwo</recordid><startdate>202309</startdate><enddate>202309</enddate><creator>Hagg, Wilfried</creator><creator>Mayer, Christoph</creator><creator>Münzer, Ulrich</creator><creator>Barbosa, Natalie</creator><creator>Schuler, Hans-Martin</creator><creator>Staudacher, Matthias</creator><general>Cambridge University Press</general><scope>IKXGN</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7TG</scope><scope>7UA</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>PCBAR</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-4226-4608</orcidid><orcidid>https://orcid.org/0000-0002-0554-1936</orcidid></search><sort><creationdate>202309</creationdate><title>Estimating local surface glacier mass balance from migration of the 1918 Katla eruption tephra layer on Sléttjökull, southern Iceland</title><author>Hagg, Wilfried ; Mayer, Christoph ; Münzer, Ulrich ; Barbosa, Natalie ; Schuler, Hans-Martin ; Staudacher, Matthias</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c287t-f70b3ea5ba13041e117787a77ffc7da727d19e0ec17788f50b9cdc5e6374a20a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Ablation</topic><topic>Dipping</topic><topic>Fieldwork</topic><topic>Flow velocity</topic><topic>Glacier flow</topic><topic>Glacier mass balance</topic><topic>Glacier monitoring</topic><topic>Glacier velocities</topic><topic>Glaciers</topic><topic>Ground penetrating radar</topic><topic>ice cap</topic><topic>Interannual variability</topic><topic>Interpolation</topic><topic>Mass balance</topic><topic>Mass balance of glaciers</topic><topic>mass-balance reconstruction</topic><topic>Outcrops</topic><topic>Radar</topic><topic>radio-echo sounding</topic><topic>Satellite imagery</topic><topic>Satellite tracking</topic><topic>Surface velocity</topic><topic>Tephra</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hagg, Wilfried</creatorcontrib><creatorcontrib>Mayer, Christoph</creatorcontrib><creatorcontrib>Münzer, Ulrich</creatorcontrib><creatorcontrib>Barbosa, Natalie</creatorcontrib><creatorcontrib>Schuler, Hans-Martin</creatorcontrib><creatorcontrib>Staudacher, Matthias</creatorcontrib><collection>Cambridge University Press:Open Access Journals</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Annals of glaciology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hagg, Wilfried</au><au>Mayer, Christoph</au><au>Münzer, Ulrich</au><au>Barbosa, Natalie</au><au>Schuler, Hans-Martin</au><au>Staudacher, Matthias</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Estimating local surface glacier mass balance from migration of the 1918 Katla eruption tephra layer on Sléttjökull, southern Iceland</atitle><jtitle>Annals of glaciology</jtitle><addtitle>Ann. Glaciol</addtitle><date>2023-09</date><risdate>2023</risdate><volume>64</volume><issue>92</issue><spage>147</spage><epage>155</epage><pages>147-155</pages><issn>0260-3055</issn><eissn>1727-5644</eissn><abstract>We use the apparent horizontal shift of an englacial tephra layer outcrop to calculate local glacier mass balance on Sléttjökull, a lobe of Mýrdalsjökull in Southern Iceland. For this approach, the dipping angle of the englacial tephra layer in the glacier upstream of the outcrop and the flow velocity of the ice need to be known. An earlier investigation was expanded by the application of ground-penetrating radar, detecting the depth of the tephra along tracks with a total length of 10 km. Interpolation between the tracks enables us to derive the dipping angle of the layer along several flow lines. Together with glacier surface velocities, determined from feature tracking, we are able to estimate the local surface mass balance from the horizontal displacement of the tephra outcrop using freely available satellite imagery without additional fieldwork. The earlier local balance series was extended to the period 2014/15 to 2019/20. Although the results for the individual profiles differ slightly from each other, they show the same temporal pattern and clear variations from year to year. The results are compared to traditional mass-balance data from Hofsjökull. The two series show a good agreement in their interannual variability.</abstract><cop>Cambridge, UK</cop><pub>Cambridge University Press</pub><doi>10.1017/aog.2022.1</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-4226-4608</orcidid><orcidid>https://orcid.org/0000-0002-0554-1936</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | Annals of glaciology, 2023-09, Vol.64 (92), p.147-155 |
| issn | 0260-3055 1727-5644 |
| language | eng |
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| source | Publicly Available Content Database; Cambridge University Press |
| subjects | Ablation Dipping Fieldwork Flow velocity Glacier flow Glacier mass balance Glacier monitoring Glacier velocities Glaciers Ground penetrating radar ice cap Interannual variability Interpolation Mass balance Mass balance of glaciers mass-balance reconstruction Outcrops Radar radio-echo sounding Satellite imagery Satellite tracking Surface velocity Tephra |
| title | Estimating local surface glacier mass balance from migration of the 1918 Katla eruption tephra layer on Sléttjökull, southern Iceland |
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