Results 31 to 40 of about 160,902 (289)

Anatomy of a Dansgaard-Oeschger warming transition: High-resolution analysis of the North Greenland Ice Core Project ice core [PDF]

, 2008
Large and abrupt temperature oscillations during the last glacial period, known as Dansgaard‐Oeschger (DO) events, are clearly observed in the Greenland ice core record.
Elizabeth R. Thomas, Eric W. Wolff, Robert Mulvaney, Sigfus J. Johnsen, Jorgen P. Steffensen, Carol Arrowsmith, Altabet, Andersen, Bard, Behl, Biscaye, Blunier, Bond, Bory, Broecker, Broecker, Broecker, Bromwich, Brook, Brown, Burns, Cortijo, Cuffey, Curry, Dansgaard, Dansgaard, De Angelis, Denton, EPICA Community Members, Flückiger, Fuhrer, Gherardi, Grootes, Heinrich, Hendy, Hendy, Huber, Hughen, Johnsen, Johnsen, Jouzel, Jouzel, Jouzel, Keigwin, Knorr, Knutti, Lang, Legrand, Masson‐Delmotte, Masson‐Delmotte, Mayewski, Mayewski, Mogensen, North Greenland Ice Core Project Members (NGRIP Members), Orvik, Peterson, Petit, Rasmussen, Rousseau, Ruth, Schmidt, Schulz, Severinghaus, Severinghaus, Shackleton, Steffensen, Stocker, Stott, Svensson, Taylor, Thomas, Thomas, Thorpe, Vidal, Voelker, Wang   +75 more
core   +1 more source

Atmospheric methane variability: Centennial‐scale signals in the Last Glacial Period [PDF]

Global Biogeochemical Cycles, 2017
AbstractIn order to understand atmospheric methane (CH4) biogeochemistry now and in the future, we must apprehend its natural variability, without anthropogenic influence. Samples of ancient air trapped within ice cores provide the means to do this. Here we analyze the ultrahigh‐resolution CH4 record of the West Antarctic Ice Sheet Divide ice core 67.2–
Rachael H. Rhodes, Edward J. Brook, Joseph R. McConnell, Thomas Blunier, Louise C. Sime, Xavier Faïn, Robert Mulvaney   +6 more
openaire   +6 more sources

Tri-dimensional Model of the Radovna Glacier from the Last Glacial Period

Geologija, 2016
The Radovna River Valley is located in the northwest of Slovenia, in the Julian Alps, and bounded by two plateaus – Pokljuka in the south and Mežakla in the north.
Luka Serianz
doaj   +1 more source

Persistence of full glacial conditions in the central Pacific until 15,000 years ago [PDF]

, 2007
The magnitude of atmospheric cooling during the Last Glacial Maximum and the timing of the transition into the current interglacial period remain poorly constrained in tropical regions, partly because of a lack of suitable climate records.
Blard, P.-H., Bourlès, D., Lavé, J., Pik, R., Wagnon, P.   +4 more
core   +3 more sources

Geology of Tindfjallajökull volcano, Iceland [PDF]

, 2018
The geology of Tindfjallajökull volcano, southern Iceland, is presented as a 1:50,000 scale map. Field mapping was carried out with a focus on indicators of past environments.
Dave McGarvie, John A. Stevenson, Jonathan D. Moles, Jóhannesson H., Larsen G., Rittman A., Sarah C. Sherlock, Sigurdsson H., Sæmundsson K., Thórarinsson S., USA Defence Mapping Agency   +10 more
core   +3 more sources

Grain Size Constraints on Glacial Circulation in the Southwest Atlantic [PDF]

, 2018
Knowledge of past deep-ocean current speeds has the potential to inform our understanding of changes in the climate system on glacial-interglacial timescales, because they may be used to help constrain changes in deep-ocean circulation rates and pathways.
Ellis, P, Spooner, PT, Thornalley, DJR
core   +1 more source

Hydrological processes affecting the subtropical NE Atlantic (34-38° N) over the last 30 ka: Evidence from phyto- and zooplankton assemblages [PDF]

, 2011
International audienceNew dinocyst analyses were conducted on core MD99-2339 retrieved from the central Gulf of Cadiz. Dinocyst and foraminiferal assemblages from this core are combined with existing data off SW Portugal and NW Morocco to investigate ...
Blamart, D., Eynaud, F., Marret, F., Mulder, T., Pénaud, Aurélie, Rossignol, L., Turon, J. L., Voelker, A.   +7 more
core   +3 more sources

Varied Response of Western Pacific Hydrology to Climate Forcings over the Last Glacial Period [PDF]

, 2013
Atmospheric deep convection in the west Pacific plays a key role in the global heat and moisture budgets, yet its response to orbital and abrupt climate change events is poorly resolved.
Adkins, Jess F., Carolin, Stacy A., Clark, Brian, Cobb, Kim M., Conroy, Jessica L., Lejau, Syria, Malang, Jenny, Tuen, Andrew A.   +7 more
core   +1 more source

Yield responses of wild C3 and C4 crop progenitors to sub-ambient CO2 : A test for the role of CO2 limitation in the origin of agriculture. [PDF]

, 2016
Limitation of plant productivity by the low partial pressure of atmospheric CO2 (Ca ) experienced during the last glacial period is hypothesised to have been an important constraint on the origins of agriculture.
Abbo, Abbo, Abbo, Ainsworth, Ainsworth, Ainsworth, Allen, Andalo, Anderson, Arp, Baker, Barnes, Bender, Bettinger, Bezemer, Blumler, Byrne, Caemmerer, Campbell, Cohen, Cohen, Colledge, Conley, Cowling, Crawley, Cunniff, Cunniff, Darwin, Dippery, Duzen, Edwards, Evans, Farquhar, Fuller, Fuller, Garcia, Gerhart, Gesch, Gifford, Granados, Grünzweig, Hampton, Harlan, Hatch, Hodell, Huxman, Ivandic, Jablonski, Johnson, Jouzel, Kimball, Kimball, Kirschbaum, Larson, Leakey, Leakey, Leakey, Long, Maherali, Manderscheid, Maroco, Mayeux, Meyer, Osborne, Osborne, Ottman, Owensby, Petit, Pinheiro, Pinto, Piperno, Piperno, Piperno, Piperno, Piperno, Polley, Polley, Polley, Purugganan, Purugganan, Richerson, Rindos, Ripley, Robinson, Sage, Sage, Sage, Sage, Samarakoon, Sionit, Steinger, Tissue, Vu, Wall, Wall, Wand, Wang, Ward, Ward, Ward, Ward, Weiss, Willcox, Willcox, Yung, Ziska, Ziska, Zohary   +107 more
core   +1 more source

Geochemical evidence for the origin of late Quaternary loess, Seward Peninsula, Alaska

Arctic, Antarctic, and Alpine Research
Loess is the most widespread surficial deposit in the state of Alaska. Although loess of last glacial age is common in mid-continental North America, records of last glacial loess in Alaska have been elusive. Here we report a record of last glacial loess
Daniel R. Muhs, Jeffrey S. Pigati
doaj   +1 more source