Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Nicolai B. Mortensen"'
Autor:
Jay A. Johnson, Nicolai B. Mortensen, Chris J. Gibson, Alexander J. Shturmakov, Tanner W. Kuhl
Publikováno v:
Annals of Glaciology. 55:27-33
Many of the ice-coring objectives in the Ice Drilling Program Office (IDPO) Long Range Science Plan, such as those in the International Partnerships in Ice Core Sciences (IPICS) 2k array and 40k network, are attainable in many locations with an inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1773be99e343a43155a3da87c202f65f
https://doi.org/10.3189/2014aog68a011
https://doi.org/10.3189/2014aog68a011
Autor:
Chris J. Gibson, Alexander J. Shturmakov, Nicolai B. Mortensen, Jay A. Johnson, Joshua J. Goetz
Publikováno v:
Annals of Glaciology. 55:331-338
Drilling the WDC06A borehole at the West Antarctic Ice Sheet (WAIS) Divide with the Deep Ice Sheet Coring (DISC) drill began in December 2007 and was successfully completed in December 2011 to a depth of 3405 m. The design and construction of a repli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36e20f722c8c5c7ab3b2e876f174b97f
https://doi.org/10.3189/2014aog68a034
https://doi.org/10.3189/2014aog68a034
Autor:
Joshua J. Goetz, Alexander J. Shturmakov, Chris J. Gibson, Nicolai B. Mortensen, Jay A. Johnson
Publikováno v:
Annals of Glaciology. 55:165-172
The replicate ice-coring system was developed by Ice Drilling Design and Operations (IDDO) for the US National Science Foundation. The design of the system leverages the existing infrastructure of the deep ice-sheet coring (DISC) drill to create a st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd24fc4c196c2513c9dd4aba272f188b
https://doi.org/10.3189/2014aog68a019
https://doi.org/10.3189/2014aog68a019
Autor:
Chris J. Gibson, Nicolai B. Mortensen, Jay A. Johnson, Alexander J. Shturmakov, Joshua J. Goetz
Publikováno v:
Annals of Glaciology. 55:156-164
The drilling of a deep borehole in ice is an undertaking that spans several seasons. Over recent decades such drilling has become widespread in both polar regions. Owing to the remoteness of the drill sites, considerable cost is associated with the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1705907d3f7d86476541479c982694a
https://doi.org/10.3189/2014aog68a014
https://doi.org/10.3189/2014aog68a014
Autor:
Joshua J. Goetz, Nicolai B. Mortensen, Chris J. Gibson, Donald A. Lebar, Anthony W. Wendricks, Alexander J. Shturmakov, Kristina Slawny, Jay A. Johnson
Publikováno v:
Annals of Glaciology. 55:147-155
The deep ice-sheet coring (DISC) drill was used for production ice-core drilling at WAIS Divide in Antarctica for six field seasons between 2007 and 2013. Continuous ice-core samples were obtained between the snow surface and 3405 m depth. During the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b326892229c6739e39821d0cec31b2f
https://doi.org/10.3189/2014aog68a018
https://doi.org/10.3189/2014aog68a018
Publikováno v:
Annals of Glaciology. 55:99-104
In deep ice-coring, as in many other disciplines, a winching system is involved in the overall operation of the drilling activities. The need to efficiently store the cable on the winch drum is well recognized, and the ‘orthocyclically wound’ app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f46d8e07ea05de8499a6c2f1a23fce5
https://doi.org/10.3189/2014aog68a013
https://doi.org/10.3189/2014aog68a013
Autor:
Bruce H. Vaughn, Xianfeng Wang, David G. Ferris, Bradley R. Markle, Edward J. Brook, Kendrick C. Taylor, Howard Conway, Anais Orsi, Nicolai B. Mortensen, Edwin D. Waddington, Joseph R. McConnell, Kenneth C. McGwire, Peter Neff, William P. Mason, James E. Lee, Qinghua Ding, Eric J. Steig, G. J. Wong, Tyler J. Fudge, Geoffrey M. Hargreaves, Michael Sigl, Jeffrey P. Severinghaus, Joan J. Fitzpatrick, Todd Sowers, Logan Mitchell, Olivia J. Maselli, Gary D. Clow, J. S. Edwards, John M. Fegyveresi, Richard B. Alley, Jay A. Johnson, Trevor Popp, Donald E. Voigt, Jihong Cole-Dai, M. K. Spencer, Hai Cheng, James W. C. White, Kurt M. Cuffey, R. Lawrence Edwards, Ross Edwards, Spruce W. Schoenemann, Andrew J. Schauer
Publikováno v:
Nature. 500:440-444
The cause of warming in the Southern Hemisphere during the most recent deglaciation remains a matter of debate. Hypotheses for a Northern Hemisphere trigger, through oceanic redistributions of heat, are based in part on the abrupt onset of warming se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7deea5724d70c879ca6fa2fe9097d403
https://doi.org/10.1038/nature12376
https://doi.org/10.1038/nature12376
Publikováno v:
Annals of Glaciology. 47:41-50
The deep ice-sheet coring (DISC) drill developed by Ice Coring and Drilling Services under contract to the US National Science Foundation is an electromechanical drill designed to take 122 mm ice cores to depths of 4000 m. Electronic, electrical and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b19da916640d158ab6e780d556e93ca
https://doi.org/10.3189/172756407786857668
https://doi.org/10.3189/172756407786857668
Autor:
Alexander J. Shturmakov, Paul J. Sendelbach, Scott T. Haman, Kristina R. Dahnert, L. Augustin, Nicolai B. Mortensen, William P. Mason, Jay A. Johnson
Publikováno v:
Annals of Glaciology. 47:54-60
The Deep Ice Sheet Coring (DISC) drill developed by Ice Coring and Drilling Services under contract with the US National Science Foundation is an electromechanical ice-drill system designed to take 122mm ice cores to depths of 4000 m. The new drill s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b7cb868840077bb84844b79e259d538
https://doi.org/10.3189/172756407786857730
https://doi.org/10.3189/172756407786857730
Autor:
Peter Neff, Thomas E. Woodruff, Nelia W. Dunbar, Shaun A. Marcott, Eric J. Steig, Joel B Pedro, Chris J. Gibson, Kristina Slawny, R. C. Bay, Edward J. Brook, Howard Conway, B. G. Koffman, Daniel Baggenstos, Joan J. Fitzpatrick, Joseph M. Souney, Nicolai B. Mortensen, Andrew J. Schauer, Stephanie Gregory, Erin C. Pettit, Richard B. Alley, Spruce W. Schoenemann, Richard M. Nunn, Bruce H. Vaughn, Tyler R. Jones, Michael Sigl, Alexander J. Shturmakov, John M. Fegyveresi, Mai Winstrup, Mark S. Twickler, Todd Sowers, Nels Iverson, Karl J. Kreutz, James W. C. White, Kunihiko Nishiizumi, Kurt M. Cuffey, Geoffrey M. Hargreaves, T. K. Bauska, Edwin D. Waddington, Jinho Ahn, Matthew J. Kippenhan, Bradley R. Markle, P. Buford Price, Vasileios Gkinis, Tanner W. Kuhl, Nathan Chellman, J. S. Edwards, Logan Mitchell, G. J. Wong, Anthony W. Wendricks, Joshua J. Goetz, Kees C. Welten, Rachael H. Rhodes, Olivia J. Maselli, Tyler J. Fudge, Gary D. Clow, Jihong Cole-Dai, Jeffrey P. Severinghaus, Brian B. Bencivengo, Joseph R. McConnell, Charles R. Bentley, Julia Rosen, Kenneth C. McGwire, Eric D. Cravens, Betty Adrian, Mary R. Albert, D. G. Ferris, John C. Priscu, M. K. Spencer, Daniel R. Pasteris, M. Kalk, Donald A. Lebar, Anais Orsi, James E. Lee, Jay A. Johnson, Paul J. Sendelbach, Donald E. Voigt, Christo Buizert, Kendrick C. Taylor
Publikováno v:
Nature
Nature, Nature Publishing Group, 2015, 520 (7549), pp.661-665. ⟨10.1038/nature14401⟩
Nature, 2015, 520 (7549), pp.661-665. ⟨10.1038/nature14401⟩
Nature, Nature Publishing Group, 2015, 520 (7549), pp.661-665. ⟨10.1038/nature14401⟩
Nature, 2015, 520 (7549), pp.661-665. ⟨10.1038/nature14401⟩
The last glacial period exhibited abrupt Dansgaard-Oeschger climatic oscillations, evidence of which is preserved in a variety of Northern Hemisphere palaeoclimate archives. Ice cores show that Antarctica cooled during the warm phases of the Greenlan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba2df0dd3ebb4e5c246b09f4abc6d200
https://pubmed.ncbi.nlm.nih.gov/25925474
https://pubmed.ncbi.nlm.nih.gov/25925474