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- Q9063437 subject Q6933189.
- Q9063437 subject Q8668359.
- Q9063437 abstract "The drilling site of the North Greenland Ice Core Project (NGRIP or NorthGRIP) is near the center of Greenland (75.1 N, 42.32 W, 2917 m, ice thickness 3085). Drilling began in 1999 and was completed at bedrock in 2003 [1]. The cores are cylinders of ice 11 centimeters in diameter that were brought to the surface in 3.5-meter lengths. The NGRIP site was chosen to extract a long and undisturbed record stretching into the last glacial, and it succeeded. The site was chosen for a flat basal topography to avoid the flow distortions that render the bottom of the GRIP and GISP cores unreliable. Unusually, there is melting at the bottom of the NGRIP core - believed to be due to a high geothermal heat flux locally. This has the advantage that the bottom layers are less compressed by thinning than they would otherwise be: NGRIP annual layers at 105 kyr age are 1.1 cm thick, twice the GRIP thicknesses at equal age.The NGRIP record helps to resolve a problem with the GRIP and GISP2 records - the unreliability of the Eemian Stage portion of the record. NGRIP covers 5 kyr of the Eemian, and shows that temperatures then were roughly as stable as the pre-industrial Holocene temperatures were. This is confirmed by sediment cores, in particular MD95-2042 [2].In 2003, NGRIP recovered what seem to be plant remnants nearly two miles below the surface, and they may be several million years old. [3] "Several of the pieces look very much like blades of grass or pine needles," said University of Colorado at Boulder geological sciences Professor James White, an NGRIP principal investigator. "If confirmed, this will be the first organic material ever recovered from a deep ice-core drilling project," he said.".
- Q9063437 thumbnail Ngrip-epica-do18.png?width=300.
- Q9063437 wikiPageExternalLink 3090279.stm.
- Q9063437 wikiPageExternalLink index_eng.htm.
- Q9063437 wikiPageExternalLink index_eng.htm.
- Q9063437 wikiPageExternalLink search_eemian.
- Q9063437 wikiPageExternalLink 001199.html.
- Q9063437 wikiPageWikiLink Q1273316.
- Q9063437 wikiPageWikiLink Q1295340.
- Q9063437 wikiPageWikiLink Q134435.
- Q9063437 wikiPageWikiLink Q1544733.
- Q9063437 wikiPageWikiLink Q180184.
- Q9063437 wikiPageWikiLink Q223.
- Q9063437 wikiPageWikiLink Q25445.
- Q9063437 wikiPageWikiLink Q258914.
- Q9063437 wikiPageWikiLink Q570309.
- Q9063437 wikiPageWikiLink Q602963.
- Q9063437 wikiPageWikiLink Q636340.
- Q9063437 wikiPageWikiLink Q6933189.
- Q9063437 wikiPageWikiLink Q8668359.
- Q9063437 point "75.01666666666667 -42.53333333333333".
- Q9063437 type SpatialThing.
- Q9063437 comment "The drilling site of the North Greenland Ice Core Project (NGRIP or NorthGRIP) is near the center of Greenland (75.1 N, 42.32 W, 2917 m, ice thickness 3085). Drilling began in 1999 and was completed at bedrock in 2003 [1]. The cores are cylinders of ice 11 centimeters in diameter that were brought to the surface in 3.5-meter lengths. The NGRIP site was chosen to extract a long and undisturbed record stretching into the last glacial, and it succeeded.".
- Q9063437 label "North Greenland Ice Core Project".
- Q9063437 lat "75.01666666666667".
- Q9063437 long "-42.53333333333333".
- Q9063437 depiction Ngrip-epica-do18.png.