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Topic: Stadial


In the News (Wed 23 Dec 09)

  
  Younger Dryas - Wikipedia, the free encyclopedia
An Older Dryas stadial had preceded the Allerod, approximately 1000 years before the Younger Dryas; it lasted 300 years [2].
The Younger Dryas saw a rapid return to glacial conditions in the higher latitudes of the Northern Hemisphere between 12,900 – 11,500 years before present (BP)[2] in sharp contrast to the warming of the preceding interstadial deglaciation.
Sissons, J.B. (1979), The Loch Lomond stadial in the British Isles.
en.wikipedia.org /wiki/Younger_Dryas   (769 words)

  
 Cultural evolution - Encyclopedia.WorldSearch   (Site not responding. Last check: 2007-09-05)
The focus of research for evolutionary anthropologists is therefore on both the mechanisms of cultural transmission and the selective pressures that influence cultural change.
This version of cultural evolution shares little in common with the stadial evolutionary models of the early and mid-20th century.
Prior to the 18th century, Europeans predominantly believed that societies on Earth were in a state of decline.
encyclopedia.worldsearch.com /cultural_evolution.htm   (2197 words)

  
 Cromohs 1999 - Francesconi - William Robertson on Historical Causation and Unintended Consequences
When, for want of a better word, I refer to a stadial history or a stadial conception of history, it should be understood that I mean less a sequential reconstruction of the history of society than a very powerful set of allusions to a certain mechanics of social and historical change (8).
The Achilles’ heel of O’Brien’s interpretation is that her distinction between narrative and stadial history seems to be a little too rigid (at least as far as Robertson is concerned).
Firstly, by so doing one would be in danger of collapsing the distinction between a stadial conception of society (often characterised by the progress from hunting to shepherding, from farming to commerce) and the principle of the unintended consequences in which that stadial process could be expressed.
www.cromohs.unifi.it /4_99/francesconi.html   (10916 words)

  
 Science and Society: OVERVIEW PAGE
Thus Laibman develops a stadial model in which capitalism is explained as evolving through alternating periods of diffusion and accumulation, with transitions spurred by crisis and by sometimes halting long-term cycles of advance and retreat.
He proposes that we may currently be finding ourselves in a stalled transition to a global diffusion of capitalism and a potential global world state with the political potential of becoming socialist.
The underlying contradiction between a relatively stagnant real economy and a debt-driven investment pyramid, which she likens to a Ponzi scheme, is "a deep-seated flaw of capitalism." She notes that dollar-denominated debt is greatest among the wealthiest nations, but those in the developing world suffer the greatest risks in times of crisis.
www.scienceandsociety.com /editorial.html   (1833 words)

  
 Figure 4 | Decline of the marine ecosystem caused by a reduction in the Atlantic overturning circulation : Nature   (Site not responding. Last check: 2007-09-05)
Decline of the marine ecosystem caused by a reduction in the Atlantic overturning circulation
Colour contours give the model ensemble mean ratio of export production during the early stadial stage (a; yr 500) and the late stadial stage (b; yr 1,200) with respect to interstadial (model year 0) values.
Blue coloured circles denote lower productivity during stadials, and orange coloured circles denote increased productivity as inferred from the proxy records discussed in the main text.
www.nature.com /nature/journal/v434/n7033/fig_tab/nature03476_F4.html   (237 words)

  
 Stomatal evidence for a decline in atmospheric CO2 concentration during the Younger Dryas stadial: A comparison with ...   (Site not responding. Last check: 2007-09-05)
Stomatal evidence for a decline in atmospheric CO concentration during the Younger Dryas stadial: A comparison with Antarctic ice core records.
Furthermore, the trends recorded in the most accurate high-resolution ice core record of CO, from Dome Concordia (Monnin et al., 2001), can be reproduced from our stomatal-based CO records, when time averaged by the mean age distribution of air contained within Dome C ice (200 to 550 years).
If correct, our results indicate an abrupt drawdown of atmospheric CO within two centuries at the onset of GS-1, suggesting some re-evaluation of the behaviour of atmospheric CO sinks and sources during times of rapid climatic change such as the Lateglacial may be required.
ehleringer.net /Snowbirdsymposium/abstracts/Mcelwain.html   (326 words)

  
 Rull, Valenti - 1998   (Site not responding. Last check: 2007-09-05)
A stadial, called El Caballo, is reported at 16.5 ka B.P. The estimated average temperature was around 7° C lower than today, and coincides with the Colombian Fuquene stadial and the global oxygen-isotopic Stage 2.
To explain this it is necessary to take into account the decreasing age of sediments with increasing altitude, because of the removing of older sediments by glaciers during the LGM, combined with the sequential filling of rock cavities upwards during the deglaciation.
The maximum occurred in the last centuries, after the Little Ice Age (Piedras Blancas cold phase), and the minimum after the Miranda warm phase, around 2.5 ka B.P. Negative retreat values or readvance coincide with the La Culata cold phase.
www.pdvsa.com /lexico/bibgeol/bg3219.htm   (277 words)

  
 AN EXTENT AND AGE OF THE LAST GLACIATION IN LITHUANIA   (Site not responding. Last check: 2007-09-05)
The new geomorphologic image of Lithuanian surface obtained from aerial photos, does not confirm the traditional model of the Last Glaciation in which within the Late Nemunas Gruda, Ziogeliai and Baltija stadials were distinguished.
The Late Nemunas ice advance is considered to comprise two stages, the older Gruda stadial and the Baltija stadial.
The Baltija stadial is correllated with Pomeranian Stage.
gsa.confex.com /gsa/inqu/finalprogram/abstract_55269.htm   (376 words)

  
 ABSTRACT: Cordilleran Ice Sheet lobal interactions and glaciotectonic superposition through stadial maxima along a ...   (Site not responding. Last check: 2007-09-05)
ABSTRACT: Cordilleran Ice Sheet lobal interactions and glaciotectonic superposition through stadial maxima along a mountain front in southwestern British Columbia, Canada.
Valley glaciers appear to have shifted flow directions during phases 1 and 3.
During stadial maxima (phase 2), Fraser Lowland piedmont ice may have been part of an outlet glacier-ice stream complex that terminated in salt water over the continental shelf.
cgrg.geog.uvic.ca /abstracts/HicockCordilleranGlaciotectonic1999.html   (157 words)

  
 Rapid Climate Oscillations of the Last Glacial Cycle in the Western North Atlantic   (Site not responding. Last check: 2007-09-05)
Stage 3 maxima are close to the d18-O of the last glacial maximum (LGM) on the BR.
Although 14C dating of % CaCO3 maxima suggests a constant sedimentation rate of ~20 cm/ka, each stadial event is marked by low bulk density.
This suggests high clay flux and very high sedimentation rates, as occurred during the LGM and the Little Ice Age (the most recent millennial-scale climate event).
www.ncdc.noaa.gov /paleo/chapconf/keigwin_abs.html   (400 words)

  
 Atlas: Lateglacial Glaciers and Climate in the Silvretta Mountains, Western Austria by Andreas Hertl
The type locality of the Kromer Stadial (Kromer valley)[3] is situated within the research area.
The Egesen Stadial was clearly three-phased (E I - III).
In contrast, during the Kromer Stadial, the ELA depression was spatially homogeneous.
atlas-conferences.com /cgi-bin/abstract/cagc-44   (544 words)

  
 STADIAL-SCALE DRIFT STRATIGRAPHY FOR THE WEST ANTARCTIC ICE-SHEET   (Site not responding. Last check: 2007-09-05)
Older RS drift sheets are considered to date to Marine Isotope Stage 6 or older, consistent with a small number of exposure-age and U/Th dates.
Assuming significant sea-level control of WAIS extent, we reexamined selected Wisconsin-age RS drift complexes with ground-penetrating radar (GPR) and cosmogenic dating techniques in search of stadial events.
We focus on a RS lateral moraine sequence at 300 m elevation on Hjorth Hill, a coastal headland adjacent to Taylor Valley, where moraine boulders have 3He exposure ages between 40 and 106 Ka.
gsa.confex.com /gsa/2001AM/finalprogram/abstract_28111.htm   (521 words)

  
 [No title]   (Site not responding. Last check: 2007-09-05)
The Younger Dryas stadial event is documented in lacustrine and marine proxy climate records in Northwest Europe and the Nordic Seas as a cold period at the end of the last glacial stage.
Several marine cores from the Kangerlussuaq Trough, East Greenland contain sediment records that extend from deglaciation (c.
These comparisons and spatial differences suggest that the Atlantic Intermediate Water influx in the Kangerlussuaq Trough in the deglaciation was carried onto the East Greenland shelf in the Irminger Current, as occurs today.
www.colorado.edu /INSTAAR/ArcticWS/data/abstr/86.html   (345 words)

  
 What happens in the atmosphere during stadial-interstadial transitions
In the North Atlantic region, the glacial climate was characterized by rapid and abrupt climate swings between cold stadial conditions and relatively warm interstadial conditions
In BØLLING, on the other hand, the surface pressure distribution is similar to today with a strong Icelandic Low and a steep pressure gradient over the North Atlantic.
Over NW Europe, however, the pressure gradient is steeper in LATE-PLENI than in BØLLING due to the more easterly position of the Icelandic Low under stadial conditions, producing stronger winds over the continent between 50 and 55°N in LATE-PLENI.
www.geo.vu.nl /users/renh/14700trans.htm   (1121 words)

  
 Samizdat Magazine
I think the book’s title plays some riffs about ways we might be well advised to read it.
oasis, the act of poetry being itself a stadial or oasis condition in the nomad life, by its very lingering in language emphasizing the nomadic quality—the poem as a provisional pause, an overnighting.
Veiled in the title too is the phrase ‘as is’—which of course translates the French tel quel, title of the review and hence the school of thought through which Post-structuralism was famously articulated.
www.samizdateditions.com /issue7/review-poasis.html   (1370 words)

  
 Search Results   (Site not responding. Last check: 2007-09-05)
Vistulian - Stadial VS3 - zone ZR II 15
Vistulian - Stadial VS2 - zone ZR II 13
Vistulian - Stadial VS1 - zone ZR II 10
bobas.ib-pan.krakow.pl /cgi/foxweb.exe/SCRIPTS/plkod2?16-E   (1118 words)

  
 Atlas: The Early-Weichselian in northern central Europe — N-S and E-W transects of pollen records and their ...   (Site not responding. Last check: 2007-09-05)
Above all comparison of Early Weichselian occurences and other representative sedimentary sequences from The Netherlands, Denmark, Poland and Belarus as well as from northwestern, midwestern and southern Germany shows up not only the differences in vegetational development and palaeoclimate but also migration paths and refuge areas of different trees.
After the end of the Eemian interglacial (MIS 5e) in northern Europe, a decline in July average temperature to <10°C is signalled by the pollen, macrofossil and beetle evidence.
For this, the usually thin deposits of the Herning do not necessarily indicate that this stadial was of short duration.
atlas-conferences.com /c/a/g/c/08.htm   (496 words)

  
 Figure 3 | Rapid changes of glacial climate simulated in a coupled climate model : Nature   (Site not responding. Last check: 2007-09-05)
Rapid changes of glacial climate simulated in a coupled climate model
b, Warmest phase of a Dansgaard−Oeschger cycle minus stadial phase, 750 years apart (see Fig.
The full time evolution of surface temperature can be viewed as a movie (see Supplementary Information).
www.nature.com /nature/journal/v409/n6817/fig_tab/409153a0_F3.html   (101 words)

  
 Edmund Burke
Burke, like Smith again, wrote ‘philosophical’ history, that is to say gave a view of the key agencies that had shaped human destiny over the long run of human society.
Indeed, he casually implied a four-stage theory of socio-economic history at a time when Scottish stadial history, except that in Dalrymple's Feudal Property (1757), was either unwritten or unpublished.
But his attention, primarily, lay elsewhere, as appears in An Account of the European Settlements.
plato.stanford.edu /entries/burke   (10646 words)

  
 ABSTRACT: Trend surface analysis of major late-Wisconsin till sheets, Brantford-Woodstock area, southern Ontario   (Site not responding. Last check: 2007-09-05)
Title : Trend surface analysis of major late-Wisconsin till sheets, Brantford-Woodstock area, southern Ontario
Linear and quadratic trend surfaces were computed for textural, carbonate, clast and heavy mineral properties of the Catfish Creek (Nissouri Stadial), Port Stanley (Port Bruce Stadial), Tavistock (Port Bruce Stadial), and Wentworth (Port Huron Stadial) tills.
Catfish Creek Till pebble grade material provided trend surfaces reflecting the underlying bedrock.
cgrg.geog.uvic.ca /abstracts/CowanTrendLinear1978.html   (239 words)

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