Little Ice Age glacial geomorphology and sedimentology of Portage Glacier, South-Central Alaska
نویسندگان
چکیده
منابع مشابه
Rapid viscoelastic uplift in southeast Alaska caused by post-Little Ice Age glacial retreat
Our observations show that extreme uplift in southeast Alaska began about 1770 AD, with relative sea level (RSL) change to 5.7 m and current uplift rates to 32 mm/yr. This region experienced widespread glacial melting following the Little Ice Age (LIA), with the collapse of the Glacier Bay Icefield alone equivalent to 8 mm of global sea level rise. Geodynamic modelling links the uplift to post-...
متن کاملAge vs depth of glacial ice at South Pole
Knowledge of age as a function of depth in glacial ice is important for both glaciology and paleoclimatology. For sites near a ridge or dome, an ice flow model together with information on accumulation rate provides a first approximation. If the accumulation rate is high enough, annual layering of isotopes and dust measured in a solid core can provide a precise age vs depth relationship. For So...
متن کاملLittle Ice Age
Volume 1, The Earth system: physical and chemical dimensions of global environmental change, pp 504–509
متن کاملIce elevations and surface change on the Malaspina Glacier, Alaska
[1] Here we use Ice, Cloud and land Elevation Satellite (ICESat)-derived elevations and surface characteristics to investigate the Malaspina Glacier of southern Alaska. Although there is significant elevation variability between ICESat tracks on this glacier, we were able to discern general patterns in surface elevation change by using a regional digital elevation model (DEM) as a reference sur...
متن کاملClimatic warming, glacier recession and runoff from Alpine basins after the Little Ice Age maximum
Records of discharge of rivers draining Alpine basins with between 0 and 70% ice cover, in the upper Aare and Rhône catchments, Switzerland, for the period 1894–2006 have been examined together with climatic data for 1866–2006, with a view to assessing the effects on runoff from glacierized basins of climatic warming coupled with glacier recession following the Little Ice Age maximum. Annual ru...
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ژورنال
عنوان ژورنال: Finisterra
سال: 2012
ISSN: 0430-5027
DOI: 10.18055/finis1380