Blar i Department of Earth Science på forfatter "Mangerud, Jan"
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Atmosphere-driven ice sheet mass loss paced by topography: Insights from modelling the south-western Scandinavian Ice Sheet
Åkesson, Henning; Morlighem, Mathieu; Nisancioglu, Kerim Hestnes; Svendsen, John-Inge; Mangerud, Jan (Peer reviewed; Journal article, 2018-09)Marine-terminating glaciers and ice streams are important controls of ice sheet mass balance. However, understanding of their long-term response to external forcing is limited by relatively short observational records of ... -
Calendar year age estimates of Allerød - Younger Dryas sea-level oscillations at Os, western Norway
Lohne, Øystein S.; Bondevik, Stein; Mangerud, Jan; Schrader, Hans (Journal article, 2004)A detailed shoreline displacement curve documents the Younger Dryas transgression in western Norway. The relative sea-level rise was more than 9m in an area which subsequently experienced an emergence of almost 60 m. The ... -
Clitellate worms (Annelida) in late-glacial and Holocene sedimentary DNA records from the Polar Urals and northern Norway
Lammers, Youri; Clarke, Charlotte; Erséus, Christer; Brown, Antony Gavin; Edwards, Mary Elizabeth; Gielly, Ludovic; Haflidason, Haflidi; Mangerud, Jan; Rota, E; Svendsen, John-Inge; Alsos, Inger Greve (Peer reviewed; Journal article, 2018-11-26)While there are extensive macro‐ and microfossil records of a range of plants and animals from the Quaternary, earthworms and their close relatives amongst annelids are not preserved as fossils and therefore the knowledge ... -
Configuration of the Scandinavian Ice Sheet in southwestern Norway during the Younger Dryas
Briner, Jason P.; Svendsen, John Inge; Mangerud, Jan; Linge, Henriette; Gyllencreutz, Richard; Dahl, Svein Olaf; Fabel, Derek (Journal article; Peer reviewed, 2023)The extent of the Scandinavian Ice Sheet in southwestern Norway is precisely located during the well-characterized Younger Dryas re-advance. However, the thickness of the ice sheet is less well constrained inland from the ... -
Deglaciation of the Scandinavian Ice Sheet and a Younger Dryas ice cap in the outer Hardangerfjorden area, southwestern Norway
Regnéll, Carl; Briner, Jason P.; Haflidason, Haflidi; Mangerud, Jan; Svendsen, John Inge (Journal article; Peer reviewed, 2021)Understanding past responses of ice sheets to climate change provides an important long-term context for observations of present day, and projected future, ice-sheet change. In this work, we reconstruct the deglaciation ... -
Did the Eurasian ice sheets melt completely in early Marine Isotope Stage 3? New evidence from Norway and a synthesis for Eurasia
Mangerud, Jan; Alexanderson, Helena; Birks, Hilary H; Paus, Aage; Perić, Zoran M.; Svendsen, John Inge (Journal article; Peer reviewed, 2023)We describe glaci-lacustrine sediments buried under thick tills in Folldalen, south-east Norway, a site located close to the former centre of the Scandinavian Ice Sheet. Thus, the location implies that the ice sheet had ... -
The discovery of the Younger Dryas, and comments on the current meaning and usage of the term
Mangerud, Jan (Journal article; Peer reviewed, 2021)The Younger Dryas (YD) cold event was discovered in Denmark by Hartz and Mithers in 1904 and the term coined by Hartz in 1912. It was identified as a lacustrine clay bed containing plant macrofossils of an Arctic flora, ... -
Evidence for three North Sea tsunamis at the Shetland Islands between 8000 and 1500 years ago
Bondevik, Stein; Mangerud, Jan; Dawson, Sue; Dawson, Alastair; Lohne, Øystein S. (Journal article, 2005-08)Coastal fen- and lake deposits enclose sand layers that record at least three Holocene tsunamis at the Shetland Islands. The oldest is the well-known Storegga tsunami (ca 8100 cal yr BP), which at the Shetlands invaded ... -
Fana har Norges første og beste naturarkiv fra varmetiden før siste istid
Mangerud, Jan (Fana Historielag Årsskrift 2009, Chapter, 2009) -
Geomorfologiske og kvartærgeologiske studier i og omkring midtre Gudbrandsdal
Mangerud, Jan (Master thesis, 1962) -
High‐resolution chronology of 24 000‐year long cores from two lakes in the Polar Urals, Russia, correlated with palaeomagnetic inclination records with a distinct event about 20 000 years ago
Haflidason, Haflidi; Brendryen, Jo; Eldegard, Reidun Fagerheim; Mangerud, Jan; Ólafsdóttir, Sædis; Regnéll, Carl; Svendsen, John Inge (Journal article; Peer reviewed, 2021)Based on radiocarbon dating, a tephra horizon, varve counts and palaeomagnetism, detailed age models covering the last ~24 k cal a bp, have been developed for the stratigraphy in the lakes Bolshoye Shchuchye and Maloye ... -
Ice-flow patterns and precise timing of ice sheet retreat across a dissected fjord landscape in western Norway
Mangerud, Jan; Hughes, Anna L.C.; Sæle, Tone Herfindal; Svendsen, John-Inge (Peer reviewed; Journal article, 2019-06)We reconstruct patterns of ice flow and retreat of the southwestern Scandinavian Ice Sheet, from 2900 field observations of glacial striae and elevation measurements of 60 ice-marginal-deltas from a high-resolution LiDAR ... -
Lake stratigraphy implies an 80 000 yr delayed melting of buried dead ice in northern Russia
Henriksen, Mona; Mangerud, Jan; Matiouchkov, Alexei; Paus, Aage; Svendsen, John-Inge (Peer reviewed; Journal article, 2003)Sediment cores from lakes Kormovoye and Oshkoty in the glaciated region of the Pechora Lowland, northern Russia, reveal sediment gravity flow deposits overlain by lacustrine mud and gyttja. The sediments were deposited ... -
The last Eurasian Ice Sheets - a chronological database and time-slice reconstruction
Hughes, Anna L.C.; Gyllencreutz, Richard; Lohne, Øystein Strand; Mangerud, Jan; Svendsen, John-Inge (Peer reviewed; Journal article, 2016-10-09)We present a new time-slice reconstruction of the Eurasian ice sheets (British–Irish, Svalbard–Barents–Kara Seas and Scandinavian) documenting the spatial evolution of these interconnected ice sheets every 1000 years from ... -
Last interglacial sea-level proxies in the glaciated Northern Hemisphere
Dalton, A.S.; Gowan, Evan J.; Mangerud, Jan; Möller, Per; Lunkka, J.P.; Astakhov, Valery i. (Journal article; Peer reviewed, 2022)Because global sea level during the last interglacial (LIG; 130–115 ka) was higher than today, the LIG is a useful approximate analogue for improving predictions of future sea-level rise. Here, we synthesize sea-level ... -
Late Quaternary dynamics of Arctic biota from ancient environmental genomics
Wang, Yucheng; Pedersen, Mikkel W.; Alsos, Inger Greve; De Sanctis, Bianca; Racimo, Fernando; Prohaska, Ana; Coissac, Eric; Owens, Hannah L.; Merkel, Marie Føreid; Fernandez-Guerra, Antonio; Rouillard, Alexandra; Lammers, Youri; Alberti, Adriana; Denoeud, France; Money, Daniel; Ruter, Anthony H.; McColl, Hugh; Larsen, Nicolaj K.; Cherezova, Anna A.; Edwards, Mary E.; Fedorov, Grigory B.; Haile, James; Orlando, Ludovic; Vinner, Lasse; Korneliussen, Thorfinn S.; Beilman, David W.; Bjørk, Anders A.; Cao, Jialu; Dockter, Christoph; Esdale, Julie; Gusarova, Galina; Kjeldsen, Kristian K.; Mangerud, Jan; Rasic, Jeffrey T.; Skadhauge, Birgitte; Svendsen, John Inge; Tikhonov, Alexei N.; Wincker, Patrick; Xing, Yingchun; Zhang, Yubin; Froese, Duane G.; Rahbek, Carsten; Nogues, David B; Holden, Philip B.; Edwards, Neil R.; Durbin, Richard; Meltzer, David J.; Kjær, Kurt H.; Moller, Per; Willerslev, Eske (Journal article; Peer reviewed, 2021)During the last glacial–interglacial cycle, Arctic biotas experienced substantial climatic changes, yet the nature, extent and rate of their responses are not fully understood1,2,3,4,5,6,7,8. Here we report a large-scale ... -
A new global ice sheet reconstruction for the past 80 000 years
Gowan, Evan J.; Zhang, Xu; Khosravi, Sara; Rovere, Alessio; Stocchi, Paolo; Hughes, Anna L.C.; Gyllencreutz, Richard; Mangerud, Jan; Svendsen, John Inge; Lohmann, Gerrit (Journal article; Peer reviewed, 2021)The evolution of past global ice sheets is highly uncertain. One example is the missing ice problem during the Last Glacial Maximum (LGM, 26 000-19 000 years before present) – an apparent 8-28 m discrepancy between far-field ... -
Northward shifts in the polar front preceded Bølling and Holocene warming in southwestern Scandinavia
Cowling, Owen C.; Thomas, Elizabeth K.; Svendsen, John-Inge; Mangerud, Jan; Vasskog, Kristian; Haflidason, Haflidi (Journal article; Peer reviewed, 2020)The last deglaciation in northern Europe provides an opportunity to study the hydrologic component of abrupt climate shifts in a region with complex interactions between ice sheets and oceanic and atmospheric circulation. ... -
Persistence of arctic-alpine flora during 24,000 years of environmental change in the Polar Urals
Clarke, Charlotte, L.; Edwards, Mary, E.; Gielly, L; Ehrich, Dorothee; Hughes, P.D.M.; Morozova, L.M.; Haflidason, Haflidi; Mangerud, Jan; Svendsen, John-Inge; Alsos, Inger Greve (Peer reviewed; Journal article, 2019-12-23)Plants adapted to extreme conditions can be at high risk from climate change; arctic-alpine plants, in particular, could “run out of space” as they are out-competed by expansion of woody vegetation. Mountain regions could ... -
Rapid retreat of a Scandinavian marine outlet glacier in response to warming at the last glacial termination
Åkesson, Henning; Gyllencreutz, Richard; Mangerud, Jan; Svendsen, John-Inge; Nick, Faezeh M.; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2020)Marine outlet glaciers on Greenland are retreating, yet it is unclear if the recent fast retreat will persist, and how atmosphere and ocean warming will impact future retreat. We show how a marine outlet glacier in ...