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dc.contributor.authorLuckman, Adrian
dc.contributor.authorBenn, Doug
dc.contributor.authorCottier, Finlo
dc.contributor.authorBevan, Suzanne
dc.contributor.authorNilsen, Frank
dc.contributor.authorInall, Mark
dc.PublishedNature Communications 2015, 6:8566eng
dc.description.abstractRates of ice mass loss at the calving margins of tidewater glaciers (frontal ablation rates) are a key uncertainty in sea level rise projections. Measurements are difficult because mass lost is replaced by ice flow at variable rates, and frontal ablation incorporates sub-aerial calving, and submarine melt and calving. Here we derive frontal ablation rates for three dynamically contrasting glaciers in Svalbard from an unusually dense series of satellite images. We combine ocean data, ice-front position and terminus velocity to investigate controls on frontal ablation. We find that frontal ablation is not dependent on ice dynamics, nor reduced by glacier surface freeze-up, but varies strongly with sub-surface water temperature. We conclude that calving proceeds by melt undercutting and ice-front collapse, a process that may dominate frontal ablation where submarine melt can outpace ice flow. Our findings illustrate the potential for deriving simple models of tidewater glacier response to oceanographic forcing.en_US
dc.publisherNature Publishing Groupen_US
dc.rightsAttribution CC BY 4.0eng
dc.subjectEarth scienceseng
dc.subjectGeology and geophysicseng
dc.titleCalving rates at tidewater glaciers vary strongly with ocean temperatureen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2015 Rights Managed by Nature Publishing Groupen_US
dc.relation.projectNorges forskningsråd: 214271
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400en_US

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Attribution CC BY 4.0
Med mindre annet er angitt, så er denne innførselen lisensiert som Attribution CC BY 4.0