Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model

dc.creatorLange, H.
dc.creatorCasassa, G.
dc.creatorIvins, E. R.
dc.creatorSchröder, L.
dc.creatorFritsche, M.
dc.creatorRichter, Andreas Jorg
dc.creatorGroh, A.
dc.creatorDietrich, R.
dc.date2014-02
dc.date2020-08-18T18:58:22Z
dc.date.accessioned2023-07-14T19:47:41Z
dc.date.available2023-07-14T19:47:41Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/102564
dc.identifierhttps://ri.conicet.gov.ar/11336/31153
dc.identifierhttp://onlinelibrary.wiley.com/doi/10.1002/2013GL058419/abstract
dc.identifierissn:0094-8276
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7436714
dc.descriptionThirty‒one GPS geodetic measurements of crustal uplift in southernmost South America determined extraordinarily high trend rates (> 35 mm/yr) in the north‒central part of the Southern Patagonian Icefield. These trends have a coherent pattern, motivating a refined viscoelastic glacial isostatic adjustment model to explain the observations. Two end‒member models provide good fits: both require a lithospheric thickness of 36.5 ± 5.3 km. However, one end‒member has a mantle viscosity near η =1.6 ×10<sup>18</sup> Pa s and an ice collapse rate from the Little Ice Age (LIA) maximum comparable to a lowest recent estimate of 1995–2012 ice loss at about −11 Gt/yr. In contrast, the other end‒member has much larger viscosity: η = 8.0 ×10<sup>18</sup> Pa s, half the post–LIA collapse rate, and a steadily rising loss rate in the twentieth century after AD 1943, reaching −25.9 Gt/yr during 1995–2012.
dc.descriptionFacultad de Ciencias Astronómicas y Geofísicas
dc.formatapplication/pdf
dc.format805-812
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectAstronomía
dc.subjectCrustal uplift
dc.subjectEarth model
dc.subjectGlacial isostatic adjustment
dc.subjectSouthern patagonian icefield
dc.subjectGNSS Geodesy
dc.subjectice loss
dc.titleObserved crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth model
dc.typeArticulo
dc.typeArticulo


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