dc.date.accessioned | 2024-03-02T16:51:07Z | |
dc.date.available | 2024-03-02T16:51:07Z | |
dc.date.created | 2023-07-27T10:36:24Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Kääb, Andreas Bazilova, Varvara Leclercq, Paul Holmlund, Erik Schytt Strozzi, Tazio . Global clustering of recent glacier surges from radar backscatter data, 2017-2022. Journal of Glaciology. 2023, 69(277), 1515-1523 | |
dc.identifier.uri | http://hdl.handle.net/10852/108935 | |
dc.description.abstract | Abstract Using global Sentinel-1 radar backscatter data, we systematically map the locations of glaciers with surge-type activity during 2017–22. Patterns of pronounced increases or decreases in the strongest backscatter between two winter seasons often indicate large changes in glacier crevassing, which we treat here as a sign of surge-type activity. Validations against velocity time series, terminus advances and crevassing found in optical satellite images confirm the robustness of this approach. We find 115 surge-type events globally between 2017 and 2022, around 100 of which on glaciers already know as surge-type. Our data reveal a pronounced spatial clustering in three regions, (i) Karakoram, Pamirs and Western Kunlun Shan (~50 surges), (ii) Svalbard (~25) and (iii) Yukon/Alaska (~9), with only a few other scattered surges elsewhere. This spatial clustering is significantly more pronounced than the overall global clustering of known surge-type glaciers. The 2017–22 clustering may point to climatic forcing of surge initiation. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | Global clustering of recent glacier surges from radar backscatter data, 2017-2022 | |
dc.title.alternative | ENEngelskEnglishGlobal clustering of recent glacier surges from radar backscatter data, 2017-2022 | |
dc.type | Journal article | |
dc.creator.author | Kääb, Andreas | |
dc.creator.author | Bazilova, Varvara | |
dc.creator.author | Leclercq, Paul | |
dc.creator.author | Holmlund, Erik Schytt | |
dc.creator.author | Strozzi, Tazio | |
cristin.unitcode | 185,15,22,0 | |
cristin.unitname | Institutt for geofag | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 2163744 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Glaciology&rft.volume=69&rft.spage=1515&rft.date=2023 | |
dc.identifier.jtitle | Journal of Glaciology | |
dc.identifier.volume | 69 | |
dc.identifier.issue | 277 | |
dc.identifier.startpage | 1515 | |
dc.identifier.endpage | 1523 | |
dc.identifier.doi | https://doi.org/10.1017/jog.2023.35 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0022-1430 | |
dc.type.version | PublishedVersion | |