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North Greenland Eemian Ice Drilling

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Journal Article
Journal: Geophysics
Published: 04 January 2016
Geophysics (2016) 81 (1): WA111–WA118.
...José A. Vélez; Georgios P. Tsoflias; Ross A. Black; Cornelis J. Van der Veen; Sridhar Anandakrishnan ABSTRACT Preferred crystal orientation fabrics (COFs) within an ice sheet or glacier are typically found from ice cores. We conducted experiments at the North Greenland Eemian Ice Drilling (NEEM...
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Map of Greenland, where gray shows ocean bathymetry, and colors show modern bed elevation beneath the Greenland ice sheet (GrIS). Red and purple outlines indicate extent of proglacial lakes in Figure 3. Ice-core and Ocean Drilling Program (ODP) sites are labeled, along with other features, including major glaciers (Bjørk et al., 2015). Orange line shows estimate of Last Glacial Maximum (LGM) ice-sheet extent (Funder et al., 2011). Black box indicates extent of maps in Figure 3. Blue and orange arrows indicate paths of (cold) East Greenland Current (EGC) and (warm) Irminger Current (IC), respectively (Straneo et al., 2012). Coordinate system is Polar Stereographic (EPSG 3413). CC—Camp Century; GRIP—Greenland Ice Core Project; EGRIP—East Greenland Ice Core Project; NEGIS—Northeast Greenland Ice Stream; NEEM—North Greenland Eemian Ice Drilling; NGRIP—North Greenland Ice Core Project.
Published: 29 April 2020
Current (IC), respectively ( Straneo et al., 2012 ). Coordinate system is Polar Stereographic (EPSG 3413). CC—Camp Century; GRIP—Greenland Ice Core Project; EGRIP—East Greenland Ice Core Project; NEGIS—Northeast Greenland Ice Stream; NEEM—North Greenland Eemian Ice Drilling; NGRIP—North Greenland Ice Core
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Site map showing locations of samples that were reanalyzed (stars), and several other previously published locales (circles): Crawfish Inlet (Alaska; Addison et al., 2010), Nordan’s Pond Bog (Newfoundland; Pyne-O’Donnell et al., 2012), and sites S1 and S2, two examples of a more comprehensive list of sites in Europe from Lawson et al. (2012). Est.—estimate; NGRIP—North Greenland Ice Core Project; NEEM—North Greenland Eemian Ice Drilling; QUB—Queen’s University Belfast; JAM—Jardelunder Moor; DOM—Dosenmoor. The lack of sites between proximal samples and eastern Canada reflects the absence of cryptotephra studies in this region.
Published: 01 October 2014
comprehensive list of sites in Europe from Lawson et al. (2012) . Est.—estimate; NGRIP—North Greenland Ice Core Project; NEEM—North Greenland Eemian Ice Drilling; QUB—Queen’s University Belfast; JAM—Jardelunder Moor; DOM—Dosenmoor. The lack of sites between proximal samples and eastern Canada reflects
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Sulfur abundance in annual (North Greenland Ice Core Project [NGRIP], and North Greenland Eemian Ice Drilling [NEEM] NEEM-2011-S1) and biannual (Greenland Ice Sheet Project 2 [GISP2]) Greenland ice core records (Zielinski et al., 1994; Sigl et al., 2015). Stars indicate positions of previously located glass shards from the White River Ash in NGRIP and NEEM-2011-S1, and the Iceland Settlement tephra in GISP2 (Coulter et al., 2012; Jensen et al., 2014). Two glass shards (lab sample numbers QUB-1835 and QUB-1841) located in the newly sampled NEEM-2011-S1 section and dated to 815 CE and 822 CE, respectively, are indicated within pink vertical bars. Sulfur time series refers to new NS1-2011 chronology (Sigl et al., 2015).
Published: 29 June 2017
Figure 3. Sulfur abundance in annual (North Greenland Ice Core Project [NGRIP], and North Greenland Eemian Ice Drilling [NEEM] NEEM-2011-S1) and biannual (Greenland Ice Sheet Project 2 [GISP2]) Greenland ice core records ( Zielinski et al., 1994 ; Sigl et al., 2015 ). Stars indicate positions
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Particulate, Cl, and S data from the North Greenland Ice Core Project (NGRIP) and North Greenland Eemian Ice Drilling sample NEEM-2011-S1. A: White River Ash east (WRAe)/AD860B form a distinct peak in the particulate data from NGRIP, showing that continuous flow particle counting can assist in pinpointing the location of tephra within an ice core. The largest diameter measured was 9.5 μm, which corresponds to the highest peak, differentiating it from nonvolcanic dust deposited on the Greenland Ice Sheet that rarely has a mean diameter of >2 μm (e.g., Ruth et al., 2003). B: HCl dominates the acidity loading. C: Volcanic H2SO4 deposition was low and limited to the NEEM-2011-S1 site (nss—non-sea salt). The rise in H2SO4 is slightly delayed compared to Cl, although both peak at similar times. All data are presented on the Greenland Ice Core Chronology 2005 (GICC05) time scale (Vinther et al., 2006).
Published: 01 October 2014
Figure 3. Particulate, Cl, and S data from the North Greenland Ice Core Project (NGRIP) and North Greenland Eemian Ice Drilling sample NEEM-2011-S1. A: White River Ash east (WRAe)/AD860B form a distinct peak in the particulate data from NGRIP, showing that continuous flow particle counting can
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Harker diagrams illustrating the glass major element geochemistry of Icelandic and Wrangell (Alaska) tephra, and new “AD860B” and White River Ash east (WRAe) glass data (normalized). A, B: Initial examination of published AD860B data (www.Tephrabase.org, and references therein; Pilcher et al., 1995; van den Bogaard and Schmincke, 2002) plotted with Icelandic and Wrangell tephra shows the clear affinity of AD860B with Wrangell tephra. C–E: New analyses of UA 1119 (WRAe reference sample) plotted with reanalyzed AD860B samples, Petite Bog (Nova Scotia), and North Greenland Eemian Ice Drilling core NEEM-2011-S1 (sample QUB-1830), show that all samples plot within the geochemical range of WRAe. Samples also tend to cluster between ∼73 and 74.5 SiO2 wt%, the most abundant population within WRAe. Cl values are similar for all samples, an important result because WRAe glass has higher concentrations of Cl relative to glass in Icelandic tephra. Additional diagrams are available in Figure DR3 (see footnote 1).
Published: 01 October 2014
Eemian Ice Drilling core NEEM-2011-S1 (sample QUB-1830), show that all samples plot within the geochemical range of WRAe. Samples also tend to cluster between ∼73 and 74.5 SiO 2 wt%, the most abundant population within WRAe. Cl values are similar for all samples, an important result because WRAe glass
Journal Article
Journal: Geology
Published: 01 October 2014
Geology (2014) 42 (10): 875–878.
... comprehensive list of sites in Europe from Lawson et al. (2012) . Est.—estimate; NGRIP—North Greenland Ice Core Project; NEEM—North Greenland Eemian Ice Drilling; QUB—Queen’s University Belfast; JAM—Jardelunder Moor; DOM—Dosenmoor. The lack of sites between proximal samples and eastern Canada reflects...
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Journal Article
Journal: Geology
Published: 29 June 2017
Geology (2017) 45 (9): 783–786.
...Figure 3. Sulfur abundance in annual (North Greenland Ice Core Project [NGRIP], and North Greenland Eemian Ice Drilling [NEEM] NEEM-2011-S1) and biannual (Greenland Ice Sheet Project 2 [GISP2]) Greenland ice core records ( Zielinski et al., 1994 ; Sigl et al., 2015 ). Stars indicate positions...
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Journal Article
Journal: Geology
Published: 01 January 2017
Geology (2017) 45 (1): 23–26.
... Bispingen/Luhe : Geologisches Jahrb A , v. 21 , p. 149 – 169 . NEEM (North Greenland Eemian Ice Drilling) Community Members , 2013 , Eemian interglacial reconstructed from a Greenland folded ice core : Nature , v. 493 , p. 489 – 494 , doi:10.1038/nature11789. Otto-Bliesner , B.L...
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Journal Article
Journal: Geophysics
Published: 03 February 2016
Geophysics (2016) 81 (1): WAi–WAii.
... Greenland Eemian Ice Drilling site, a no-flow location, and from the fast-flowing Jakobhsavn Isbræ glacier. Merz et al. present a joint interpretation of helicopter-borne GPR, seismic, geoelectric, and crosshole GPR data acquired over an alpine rock glacier. By combining these methods, inherent...
Journal Article
Published: 01 July 2003
Russ. Geol. Geophys. (2003) 44 (7): 623–637.
... correlated with events in the high-resolution records of North Atlantic ice cores and European continental pollen sequences. The correlation of the mid-Eemian cooling about 122 kyr BP and the cold Montaigu event about 103 kyr BP with low production signals in the Baikal cores evidence for a climatic...
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Journal Article
Journal: Geology
Published: 01 October 2014
Geology (2014) 42 (10): 899–902.
... the early Eemian interglacial (128 to 126 ka), exceeding modern SSTs by ∼2 °C. The further North Pacific climate evolution is marked by pronounced oscillations in SST and sea-ice extent on millennial time scales, which correspond remarkably well to short-term temperature oscillations known from Greenland...
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Journal Article
Published: 01 February 2014
Journal of Sedimentary Research (2014) 84 (2): 88–96.
.... Fig. 6.— Comparison of Miaodao section records with other paleoclimatic records during the Eemian period. A) Insolation at 65° N for July ( Berger 1978 ); B) NorthGRIP δ 18 O records ( North Greenland Ice Core Project Members 2004 ); C) grain < 63 µm fraction (%) of the MDS5 segment; D...
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Journal Article
Journal: Geology
Published: 22 March 2021
Geology (2021) 49 (7): 799–803.
... for methane release during the penultimate (Eemian, ca. 125 ka) interglacial, a period with less glacial sea ice and higher temperatures than today, is currently absent. Here, we argue that based on foraminiferal isotope studies on drill holes from offshore Svalbard, Norway, methane leakage occurred upon...
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Journal Article
Journal: Geology
Published: 01 January 2007
Geology (2007) 35 (1): 77–80.
... of the Eemian interglacial forest phase in western Europe. The new age data will also allow fine tuning of the timing and duration of Greenland stadial 24 (equivalent to C23) in the North Greenland Ice Core Project ice core and, via a common gasage chronology, tuning of the Vostok and EPICA (European Project...
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Journal Article
Journal: Geology
Published: 24 June 2021
Geology (2021) 49 (10): 1220–1224.
... T Jan decrease of up to 10°C over the LIG ( Figs. 2D and 2F ). The muted modeled temperature changes could be the result of missing feedbacks due to the fixed vegetation and the fixed ice sheets in Greenland and Antarctica. Moreover, the preindustrial control run of the CCSM3 model shows a cold...
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Journal Article
Journal: Geology
Published: 01 July 2012
Geology (2012) 40 (7): 627–630.
... Program. Dashed arrows indicate North Atlantic Drift. Figure 2. Paleoclimatic data for western Europe and offshore over interval 141–100 ka compared with Greenland Ice Sheet (GIS) melt changes. A: Core MD99–2227: Fe and Ti concentration curves ( Carlson et al., 2008 ). B–F: Multiproxy study...
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Journal Article
Journal: Geology
Published: 29 April 2020
Geology (2020) 48 (7): 737–741.
... Current (IC), respectively ( Straneo et al., 2012 ). Coordinate system is Polar Stereographic (EPSG 3413). CC—Camp Century; GRIP—Greenland Ice Core Project; EGRIP—East Greenland Ice Core Project; NEGIS—Northeast Greenland Ice Stream; NEEM—North Greenland Eemian Ice Drilling; NGRIP—North Greenland Ice Core...
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Journal Article
Journal: Geology
Published: 01 December 2004
Geology (2004) 32 (12): 1009–1012.
...— Beaulieu and Reille (1984) ; 14— Wijmstra (1969) ; 15— Tzedakis (2000) . Reworked pollen grains are excluded. Figure 2. North Atlantic Current (NAC), East Greenland Current (EGC), and European vegetation. A: During Eemian (late marine isotope stage [MIS] 5e) North Atlantic Current penetrated...
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Journal Article
Journal: Geology
Published: 01 September 2000
Geology (2000) 28 (9): 807–810.
... glacial period : Nature , v. v. 394 pp. 739 ߝ 743 . Bond , G.C. , Broecker , W. , Johnsen , S. , McManus , J. , Labeyrie , L. , Jouzel , J. , and Bonani , G. , 1993 , Correlations between climate records from North Atlantic sediments and Greenland ice : Nature , v...
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