{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:37:02Z","timestamp":1760236622033,"version":"build-2065373602"},"reference-count":14,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2021,12,8]],"date-time":"2021-12-08T00:00:00Z","timestamp":1638921600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>On 26 September 2019, a massive iceberg broke off the west side of the Amery Ice Shelf (AIS) in East Antarctica. Since 1973, the AIS calving front has steadily advanced at a rate of 1.0 km yr\u22121. However, the advancement rate of the central portion of the AIS increased dramatically during 2012\u20132015, which indicates a velocity increase prior to the calving event. Eight calving front locations from 1973 to 2018 were mapped to investigate the advancement rate of AIS over the entire observational period. Additionally, the propagation of rift A was observed unstable from 2012 to 2015. The westward propagation rate of rift A1 increased to 3.7 km yr\u22121 from 2015 to 2017, which was considerably faster than the other rifts near the AIS calving front. The increased advancement rate and the increasing propagation magnitude of at least one active rift appear to be precursors of this large calving event.<\/jats:p>","DOI":"10.3390\/rs13244983","type":"journal-article","created":{"date-parts":[[2021,12,8]],"date-time":"2021-12-08T23:30:00Z","timestamp":1639006200000},"page":"4983","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Understanding of an Iceberg Breaking Off Event Based on Ice-Front Motion Analysis of Amery Ice Shelf, Antarctica"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4842-9573","authenticated-orcid":false,"given":"Zhaohui","family":"Chi","sequence":"first","affiliation":[{"name":"Department of Geography, Texas A&M University, College Station, TX 77843-3147, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3804-8205","authenticated-orcid":false,"given":"Andrew","family":"Klein","sequence":"additional","affiliation":[{"name":"Department of Geography, Texas A&M University, College Station, TX 77843-3147, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"273","DOI":"10.3189\/S0022143000014799","article-title":"Ice shelves: A review","volume":"24","author":"Thomas","year":"1979","journal-title":"J. Glaciol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"3263","DOI":"10.1073\/pnas.1415137112","article-title":"Iceberg calving of Antarctic ice shelves","volume":"112","author":"Liu","year":"2015","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1239","DOI":"10.1126\/science.aaz5845","article-title":"Pervasive ice sheet mass loss reflects competing ocean and atmosphere processes","volume":"368","author":"Smith","year":"2020","journal-title":"Science"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1344","DOI":"10.1126\/science.1162543","article-title":"A simple law for ice-shelf calving","volume":"28","author":"Alley","year":"2008","journal-title":"Science"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"17","DOI":"10.3189\/002214308784409116","article-title":"An investigation into the forces that drive ice-shelf rift propagation on the Amery Ice Shelf, East Antarctica","volume":"54","author":"Bassis","year":"2008","journal-title":"J. Glaciol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"241","DOI":"10.3189\/172756402781817581","article-title":"Iceberg calving from the Amery Ice Shelf, East Antarctica","volume":"34","author":"Fricker","year":"2002","journal-title":"Annu. Glaciol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"243","DOI":"10.3189\/2015JoG14J151","article-title":"Observations of interannual and spatial variability in rift propagation in the Amery Ice Shelf, Antarctica, 2002\u20132014","volume":"61","author":"Walker","year":"2015","journal-title":"J. Glaciol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"255","DOI":"10.3189\/172756402781817653","article-title":"Motion of major ice-shelf fronts in Antarctica from slant-range analysis of radar altimeter data, 1978\u20131998","volume":"34","author":"Zwally","year":"2002","journal-title":"Ann. Glaciol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"335","DOI":"10.3189\/S0022143000019456","article-title":"The dynamics of the Amery Ice Shelf","volume":"6","author":"Budd","year":"1966","journal-title":"J. Glaciol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1799","DOI":"10.18520\/cs\/v115\/i9\/1799-1804","article-title":"Rift assessment and potential calving zone of Amery Ice Shelf, East Antarctica","volume":"115","author":"Darji","year":"2018","journal-title":"Curr. Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"L02502","DOI":"10.1029\/2004GL021036","article-title":"Multi-year monitoring of rift propagation on the Amery Ice Shelf, East Antarctica","volume":"32","author":"Fricker","year":"2005","journal-title":"Geophys. Res. Lett."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"592","DOI":"10.3189\/2013JoG12J225","article-title":"The slow-growing tooth of the Amery Ice Shelf from 2004 to 2012","volume":"59","author":"Zhao","year":"2013","journal-title":"J. Glaciol."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Baumhoer, C.A., Dietz, A.J., Dech, S., and Kuenzer, C. (2018). Remote sensing of Antarctic glacier and ice-shelf front dynamics\u2014A review. Remote Sens., 10.","DOI":"10.3390\/rs10091445"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"23199","DOI":"10.1029\/1999JB900224","article-title":"Development of an Antarctic digital elevation model by integrating cartographic and remotely sensed data: A geographic information system based approach","volume":"104","author":"Liu","year":"1999","journal-title":"J. Geophys. 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