North Greenland Ice Core Project

Delta-O-18 record from the NGRIP core
North Greenland Ice Core Project Oxygen Isotope Data
Calcium concentration and d18O isotope ratios from the Greenland NGRIP, GRIP, and GISP2 ice cores on the GICC05 time scale
Methane (CH4) record from the North Greenland Ice Sheet Project (NGRIP) ice core, Greenland

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 10.5 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.

See also

References

  1. ^ "Breaking through Greenland's ice cap". 23 July 2003.
  2. ^ "WorldChanging: Not-So-Abrupt Climate Change?". www.worldchanging.com. Archived from the original on 6 October 2008. Retrieved 12 January 2022.
  3. ^ "Archived copy". www.glaciology.gfy.ku.dk. Archived from the original on 5 October 2011. Retrieved 12 January 2022.{{cite web}}: CS1 maint: archived copy as title (link)

The original web page of the NGRIP project with field diaries and pictures.

The NGRIP project was run by an international consortium of scientists, and drilling and logistics were managed by what is now called Centre for Ice and Climate at the Niels Bohr Institute, University of Copenhagen, Denmark. This research centre maintains a web page about ice core research:

75°01′N 42°32′W / 75.017°N 42.533°W / 75.017; -42.533

Read other articles:

Agni-I (IAST: Agnī, yang berarti api; juga dewa api Veda dalam agama Hindu) adalah rudal balistik jarak pendek yang dikembangkan oleh DRDO India dalam Integrated Guided Missile Development Program. Ini adalah rudal satu-tahap yang dikembangkan setelah Perang Kargil untuk mengisi celah antara jarak 250 km (160 mil) dari rudal Prithvi-II dan jarak 2.500 km (1.600 mil) dari Agni-II.[1] Rudal ini pertama kali diluncurkan dari peluncur jalan di Integrated Test Range (ITR), Pulau...

 

 

Black NativityPoster rilis layar lebarSutradaraKasi LemmonsProduserWilliam HorbergT. D. JakesGalt NiederhofferCeline RattrayTrudie StylerSkenarioKasi LemmonsBerdasarkanBlack Nativityoleh Langston HughesPemeranForest WhitakerAngela BassettTyrese GibsonJennifer HudsonMary J. BligeVondie Curtis-HallNasJacob LatimoreSinematograferAnastas N. MichosPenyuntingTerilyn A. ShropshirePerusahaanproduksiMaven PicturesDistributorSearchlight PicturesTanggal rilis 27 November 2013 (2013-11-27) Durasi93 ...

 

 

Bulbophyllum cornutum Klasifikasi ilmiah Kerajaan: Plantae (tanpa takson): Angiospermae (tanpa takson): Monocots Ordo: Asparagales Famili: Orchidaceae Genus: Bulbophyllum Spesies: Bulbophyllum cornutum Nama binomial Bulbophyllum cornutum(Blume) Rchb.f. in W.G.Walpers 1861 Bulbophyllum cornutum adalah spesies tumbuhan yang tergolong ke dalam famili Orchidaceae. Spesies ini juga merupakan bagian dari ordo Asparagales. Spesies Bulbophyllum cornutum sendiri merupakan bagian dari genus Bulbophyll...

Budi Widjanarko Waketbidminwa STIK Lemdiklat Polri Informasi pribadiLahir27 September 1966 (umur 57)JakartaAlma materAkademi Kepolisian (1995)Karier militerPihak IndonesiaDinas/cabang Kepolisian Negara Republik IndonesiaMasa dinas1989–2024Pangkat Brigadir Jenderal PolisiNRP66090438SatuanReserseSunting kotak info • L • B Brigjen. Pol. Budi Widjanarko, S.H., M.H. (lahir 27 September 1966) adalah seorang perwira tinggi Polri yang sejak 7 Desember 2023 menjabat seba...

 

 

Hans SöhnkerHans Leibelt dan Hans SöhnkerLahir(1903-10-11)11 Oktober 1903Kiel, JermanMeninggal20 April 1981(1981-04-20) (umur 77)Berlin, JermanPekerjaanPemernaTahun aktif1933–1980 Hans Söhnker (11 Oktober 1903 – 20 April 1981) adalah seorang pemeran film Jerman. Ia tampil dalam 105 film antara 1933 dan 1980. Ia lahir di Kiel, Jerman dan wafat di Berlin, Jerman.[1] Referensi ^ Hans Söhnker. Film Portal. Diarsipkan dari versi asli tanggal 2023-03-28. Dia...

 

 

Kementerian Pertanian, Pangan, dan Pedesaan Republik Korea농림축산식품부Nongnim Chucksan Sikpum-buInformasi lembagaDibentuk17 Juli 1948Nomenklatur lembaga sebelumnyaKementerian Pangan, Pertanian, Kehutanan, dan PerikananWilayah hukum Republik KoreaKantor pusatKota Sejong, Korea SelatanMenteriKim Young-rok, Menteri Pertanian, Pangan, dan PedesaanKim Hyeon-su, Wakil MenteriLembaga bawahanAdministrasi Pengembangan Wilayah Pedesaan, Badan Kehutanan KoreaSitus webOfficial English Site ...

v · mGouvernement Jean-Marc Ayrault II (18 juin 2012 – 31 mars 2014) Sous la présidence de François Hollande Affaires étrangères Laurent Fabius Ministre chargé des Affaires européennes : Bernard Cazeneuve puis Thierry Repentin (1) Ministre chargé du Développement : Pascal Canfin Ministre chargée de la Francophonie : Yamina Benguigui Ministre chargée des Français de l'étranger : Hélène Conway-Mouret Jean-Marc AyraultPremier ministre Éducation na...

 

 

يفتقر محتوى هذه المقالة إلى الاستشهاد بمصادر. فضلاً، ساهم في تطوير هذه المقالة من خلال إضافة مصادر موثوق بها. أي معلومات غير موثقة يمكن التشكيك بها وإزالتها. (يوليو 2016) ميلان-سان ريمو 1999 السلسلة كأس العالم لسباق الدراجات على الطريق 1999  [لغات أخرى]‏  التاريخ مارس 20 ع...

 

 

Traditional bagpipe of Galicia and northern Portugal This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Galician gaita – news · newspapers · books · scholar · JSTOR (January 2023) (Learn how and when to remove this message) Galician gaiteiros (bagpipers) The Galician gaita (Galician: Gaita galega, Portuguese: Gaita galega, Spani...

Voce principale: Ravenna Football Club 1913. Unione Sportiva Ravenna 1994-1995Stagione 1994-1995Sport calcio Squadra Ravenna Allenatore Alberto Cavasin poi Adriano Buffoni Presidente Daniele Corvetta Serie C14º nel girone A Coppa ItaliaPrimo turno Coppa Italia Serie CSedicesimi Maggiori presenzeCampionato: Doardo (33) Miglior marcatoreCampionato: Tacchi (7) StadioStadio Bruno Benelli 1993-1994 1995-1996 Si invita a seguire il modello di voce Questa pagina raccoglie le informazioni rigu...

 

 

Частина серії проФілософіяLeft to right: Plato, Kant, Nietzsche, Buddha, Confucius, AverroesПлатонКантНіцшеБуддаКонфуційАверроес Філософи Епістемологи Естетики Етики Логіки Метафізики Соціально-політичні філософи Традиції Аналітична Арістотелівська Африканська Близькосхідна іранська Буддій�...

 

 

Ruined capital city of Urartu For the modern district in the Van Province, see Tuşba. TushpaThe citadel of Van and the ruins of Tushpa belowShown within TurkeyLocationTurkeyRegionVan ProvinceCoordinates38°30′00″N 43°20′33″E / 38.50000°N 43.34250°E / 38.50000; 43.34250 Tushpa (Armenian: Տոսպ, Տուշպա֊Վան Tosp, Tushpa-Van, Akkadian: Turuspa, from Urartian tur-, to destroy i.e. victorious) was the 9th-century BC capital of Urartu, later becoming ...

Austrian Paralympic swimmer Andreas OneaOnea in 2023Personal informationFull nameAndreas Daniel OneaBorn9 July 1992 (1992-07-09) (age 31)Zwettl, AustriaSportCountryAustriaSportParalympic swimming Medal record Men's para swimming Representing  Austria Paralympic Games 2016 Rio de Janeiro 100 m breaststroke SB8 World Championships 2022 Madeira 100 m breaststroke SB8 European Championships 2016 Funchal 100 m breaststroke SB8 2016 Funchal 200 m individual medley SB8 2018 Dubli...

 

 

River in New York, United StatesBreakneck BrookBreakneck Valley BrookCascade on brook at Undercliff Trail bridgeEtymologyFrom nearby mountainLocationCountryUnited StatesStateNew YorkRegionHudson ValleyCountyPutnamTownPhilipstownPhysical characteristicsSourceSurprise Lake • locationPhilipstown • coordinates41°27′23″N 73°57′17″W / 41.45639°N 73.95472°W / 41.45639; -73.95472 • elevation711 ft (217 ...

 

 

Medieval East Slavic state For the predecessor state, see Kievan Rus'. This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (April 2022) (Learn how and when to remove this message) Inner Principality of KievКиевское кънѧжьство (Old East Slavic)1132–1471      Left: Coin issued by Prince Vladimir Olgerdovich of Kiev (1388�...

  هذه المقالة عن محافظة الطوال. للمدينة ومركز المحافظة، طالع الطوال. للمواضيع الأخرى، طالع الطوال (توضيح). 16°31′46″N 42°58′03″E / 16.52944°N 42.96750°E / 16.52944; 42.96750 محافظة الطوال الطوال محافظة علم محافظة الطوالعلمOfficial seal of محافظة الطوالشعار الاسم الرسمي الطوال[1]...

 

 

British politician and peer (born 1959) This article is about the former MP for Basildon. For the former MP for Penistone and Stockbridge, see Angela Smith (South Yorkshire politician). For other uses, see Angela Smith (disambiguation). The Right HonourableThe Baroness Smith of BasildonPCOfficial portrait, 2024Leader of the House of LordsLord Keeper of the Privy SealIncumbentAssumed office 5 July 2024Prime MinisterKeir StarmerPreceded byThe Lord TrueLeader of the Opposition in the LordsSh...

 

 

American racing driver (1924–1998) This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (June 2015) (Learn how and when to remove this message) NASCAR driver Tim FlockBornJulius Timothy Flock(1924-05-11)May 11, 1924Fort Payne, Alabama, U.S.DiedMarch 31, 1998(1998-03-31) (aged 73)Charlotte, North Carolina, U.S.Cause of deathLiver and throat cancerAchievements...

The 1st Mini AlbumAlbum mini karya Crayon Pop – Strawberry MilkDirilis15 Oktober 2014 (2014-10-15)DirekamAugust–September 2014GenreK-popDurasi29:44BahasaKoreanLabel Chrome Entertainment Sony Music Singel dalam album The 1st Mini Album OKDirilis: 15 Oktober 2014 The 1st Mini Album adalah album mini debut dari sub-ubit Crayon Pop, Strawberry Milk, terdiri dari kembar identik Choa dan Way. Album ini dirilis pada tanggal 15 Oktober 2014 oleh Chrome Entertainment dan Sony Music. ...

 

 

Stefano Passigli Sottosegretario di Stato al Ministero dell'Industria, commercio e artigianatoDurata mandato27 aprile 2000 –11 giugno 2001 Capo del governoGiuliano Amato PredecessoreLanfranco Turci SuccessoreGiuseppe Galati Sottosegretario di Stato alla Presidenza del Consiglio dei ministricon delega all'Innovazione tecnologicaDurata mandato22 dicembre 1999 –26 aprile 2000 Capo del governoMassimo D'Alema Segretario del Senato della RepubblicaDurata mandato...