File:Epica-vostok-grip-140kyr.png
Original file (1,169 × 373 pixels, file size: 12 KB, MIME type: image/png)
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Summary
[edit]DescriptionEpica-vostok-grip-140kyr.png |
English: From the Vostok and EPICA (Antarctica) and NGRIP (Greenland) ice cores: d-o-18, last 140kyr.
d-O-18 is a proxy for temperature: more negative is colder; the period from 20 to 10 kyr shows the rise in temperature at the end of the last ice age. Note the Dansgaard-Oeschger events visible in the NGRIP core but barely, if at all, in the Antarctic cores. The period around 120 kyr is the previous interglacial; before that (140 kyr) is the previous glacial. Horizontal axis: years before present (before 1950?). Vertical axis: delta-O-18. See en:Image:Epica-vostok-grip-ngrip-o18.png for inclusion of both GRIP and NGRIP data. Note that the image is mislabelled/misnamed, the red graph shows NGRIP, not GRIP data (the red graph in this image corresponds to the green graph in File:Epica-vostok-grip-ngrip-o18.png).Suomi: Viime jääkauden lämpötilaa kuvaava happi-isotooppipitoisuuskäyrä Grönlannissa: punainen ja Antarktiksella kahdesta kohtaa: musta ja sininen. |
Date | (original upload 26 June 2005) |
Source |
Updated version of en:Image:Epica-vostok-40kyr.png including GRIP. Matlab plot of the following source data: NGRIP: North Greenland Ice Core Project Oxygen Isotope Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2004-059. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/isotopes/ngrip-d18o-50yr.txt (ss09sea timescale) EPICA: Jouzel, J., et al. 2004. EPICA Dome C Ice Cores Deuterium Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2004-038. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/epica_domec/edc_dd.txt (EDC2 timescale) Vostok: Petit, J.R., et al., 2001, Vostok Ice Core Data for 420,000 Years, IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2001-076. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/deutnat.txt (GT4 timescale) |
Author | Vostok Ice Core Data (Petit, J.R., et al., 2001); North Greenland Ice Core Project members (2004); EPICA community members (2004); this image file: William M. Connolley (2005). |
Other versions | File:Epica-vostok-grip-ngrip-o18.png File:Epica-vostok-40kyr.png |
Licensing
[edit]This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Subject to disclaimers. | ||
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. Subject to disclaimers.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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William M. Connolley at the English-language Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
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Code:
a=readfromfile('edc_dd1.txt',col=6,ign=1) b=readfromfile('vostok_deutnat1.txt',ign=1,col=4) c=readfromfile('grip.txt',ign=10,col=2) !p.multi=[0,1,2] ep=reform(a(5,*)) vo=reform(b(2,*)) gr=reform(c(1,*))*10 plot,a(4,*),ep,title='delta-o18 vs age',/xs,xr=[0,120000.],ymarg=[2,5],yr=makerange([ep,vo,gr]),th=1 oplot,col=3,b(1,*),vo,th=1 oplot,col=2,c(0,*),gr,th=1 oplot,a(4,*),ep,th=1 add_key,/rig,['EPICA (Antarctic)','Vostok (Antarctic)','GRIP (Greenland)'],[!p.color,3,2],th=3,/top
}}
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current | 21:37, 5 May 2006 | 1,169 × 373 (12 KB) | Hautala (talk | contribs) | {{PD-user-en|William M. Connolley}} * {{fi|Viime jääkauden lämpötilaa kuvaava happi-isotooppipitoisuuskäyrä Grönlannissa: punainen ja Antarktiksella kahdesta kohtaa: musta ja sininen.}} * {{en|From the Vostok and EPICA (Antarctica) and NGRIP (Gree |
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