Náttúrufræðingurinn - 2012, Qupperneq 145

145
Tímarit Hins íslenska náttúrufræðifélags
22. Dansgaard, W., Clausen, H.B., Gundestrup, N., Hammer, C.U., Sigfús J.
Johnsen, Pálína M. Kristinsdóttir & Reeh, N. 1982. A new Greenland
deep ice core. Science 218. 1273–1277.
23. Dansgaard, W., Sigfús J. Johnsen, Clausen, H.B., Dahl-Jensen, D., Gunde-
strup, N.S., Hammer, C.U., Hvidberg, C.S., Steffensen, J.P., Árný E. Svein-
björnsdóttir, Jouzel, J. & Bond, G. 1993. Evidence for general instability of
past climate from a 250-kyr ice-core record. Nature 364. 218–220.
24. Greenland Ice-Core Project (GRIP) Members 1993. Climate instability
during the last interglacial period recorded in the GRIP ice core. Nature
364. 203–207.
25. Stuiver, M. & Grootes, P.M. 2000. GISP2 oxygen-isotope ratios. Quater-
nary Research 53. 277–284.
26. Grootes, P.M., Stuiver, M., White, J.W.C., Sigfús J. Johnsen & Jouzel, J.
1993. Comparison of oxygen isotope records from the GISP2 and GRIP
Greenland ice cores. Nature 366. 552–554.
27. Andersen, K.K., Svensson, A., Sigfús J. Johnsen, Rasmussen, S.O., Bigler,
M., Röthlisberger, R., Ruth, U., Siggaard-Andersen, M.-L., Steffensen,
J.P., Dahl-Jensen, D, Vinther, B.M. & Clausen H.B. 2006. The Green-
land Ice Core Chronology 2005, 15-42 kyr. Part 1: constructing the time
scale. Quaternary Science Reviews 25 (23–24). 3246–3257.
28. Svensson, A., Andersen, K.K. Bigler, M., Clausen, H.B., Dahl-Jensen, D.,
Davies, S.M., Sigfús J. Johnsen, Muscheler, R., Rasmussen, S.O., Röthlis-
berger, R., Steffensen, J.P. & Vinther, B.M. 2006. The Greenland ice core
chronology 2005, 15-42 ka. Part 2: comparison to other records. Quater-
nary Science Reviews 25 (23–24). 3258–3267.
29. Rasmussen, S.O., Andersen, K.K., Svensson, A.M., Steffensen, J.P.,
Vinther, B.M., Clausen, H.B., Siggaard-Andersen, M.-L., Sigfús J. Johnsen,
Larsen, L.B., Dahl-Jensen, D., Bigler, M., Röthlisberger, R., Fischer, H.,
Goto-Azuma, K., Hansson, M. E. & Ruth, U. 2006. A new Greenland ice
core chronology for the last glacial termination. Journal of Geophysical
Research 111. D06102, doi:06110.01029/02005JD006079.
30. Dansgaard, W., Sigfús J. Johnsen, Clausen, H.B. & Gundestrup, N. 1973.
Stable isotope glaciology. Meddelelser om Grønland 197, Nr. 2. 53 bls.
31. Sigfús J. Johnsen, Clausen, H.B., Cuffey, K.M., Hoffmann, G., Schwan-
der, J. & Creyts, T. 2000. Diffusion of stable isotopes in polar firn and ice:
the isotope effect in firn diffusion. Bls. 121–140 í: Physics of Ice Core
Records (ritstj. Hondoh, T.). Hokkaido University Press, Sapporo.
32. Dahl-Jensen, D., Mosegaard, K., Gundestrup, N., Clow, G.D., Sigfús J.
Johnsen, Hansen, A.W. & Balling, N. 1998. Past temperatures directly
from the Greenland Ice Sheet. Science 282. 268–271.
33. Stouffer, R.J., Yin, J., Gregory, J.M., Dixon, K.W., Spelman, M.J., Hurlin,
W., Weaver, A.J., Eby, M., Flato, G.M., Hasumi, H., Hu, A., Jungclaus,
J.H., Kamenkovich, I.V., Levermann, A., Montoya, M., Murakami, S.,
Nawrath, S., Oka, A., Peltier, W.R., Robitaille, D.Y., Sokolov, A., Vet-
toretti, G. & Weber, S.L. 2006. Investigating the causes of the response
of the Thermohaline Circulation to past and future climate changes.
Journal of Climate 19. 1365–1387.
34. McManus, J.F., Francois, R., Gherardi, J.-M., Keigwin, L.D. & Brown-
Leger. S. 2004. Collapse and rapid resumption of Atlantic meridional
circulation linked to deglacial climate changes. Nature 428. 834–837.
35. Seager, R. & Battisti, D.S. 2005. Challenges to our understanding of the
general circulation: abrupt climate change. Paleo “circ” 3, chapter 2. 46 bls.
36. Huber, C., Leuenberger, M., Spahni, R., Flukiger, J., Schwander, J.,
Stocker, T.F., Johnsen, S.J., Landais, A. & Jouzel, J. 2006. Earth and
Planetary Sci. Letters 243. 504–519.
37. Landais, A., Chapellaz, J., Delmotte, M., Jouzel, J., Blunier, T., Bourg, C,
Caillon, N., Cherrier, S., Malaizé, B., Masson-Delmotte, V., Raynaud, D.,
Schwander, J. & Steffensen, J.P. 2003. A tentative reconstruction of the last
interglacial and glacial inception in Greenland based on new gas meas-
urements in the Greenland Ice Core Project (GRIP) ice core. Journal
Geophysical Research 108. doi:10.1029/2002JD0003147.
38. Steffensen, J.P., Andersen, K.K., Bigler, M., Clausen, H.B., Dahl-Jensen, D.,
Fisher, H., Goto-Azuma, K., Hansson, M., Sigfús J. Johnsen, Jouzel, J.,
Masson-Delmotte, V., Popp, T., Rasmussen, S.O., Röthlisberger, R., Ruth,
U., Stauffer, B., Siggaard-Andersen, M.-L., Árný E. Sveinbjörnsdóttir, Sven-
sson, A. & White, J.W.C. 2008. High-Resolution Greenland Ice Core Data
show abrupt climate change happens in few years. Science 321. 680–684.
39. Andersen, K.K., Armengaud, A. & Genthon, C. 1998. Atmospheric dust
under glacial and interglacial conditions. Geophysical Research Letters
25 (13). 2281–2284.
40. Svensson, A., Biscaye, P.E. & Grousset, F.E. 2000. Characterization of
late glacial continental dust in the Greenland Ice Core Project ice core.
Journal of Geophysical Research 105(D4). 4637–4656.
41. Bory, A.J.-M., Biscaye, P.E., Svensson, A. & Grousset, F.E. 2002. Seasonal
variability in the origin of recent atmospheric mineral dust at North-
GRIP, Greenland. Earth and Planetary Science Letters 196. 123–134.
42. Vinther, B.M., Buchardt, S.L., Clausen, H.B., Dahl-Jensen, D., Sigfús J.
Johnsen, Fisher, D.A., Koerner, R.M., Raynaud, D., Lipenkov, V.,
Andersen, K.K., Blunier, T., Rasmussen, S.O., Steffensen, J.P. & Svensson,
A.M. 2009. Holocene thinning of the Greenland ice sheet. Nature 461.
385–388.
43. Jouzel, J., Masson-Delmotte, V., Cattani, O., Dreyfus, G., Falourd, S.,
Hoffmann, G., Minster, B., Nouet, J., Barnola, J.M., Chappellaz, J.,
Fischer, H., Gallet, J.C., Sigfús J. Johnsen, Leuenberger, M., Loulergue,
L., Luethi, D., Oerter, H., Parrenin, F., Raisbeck, G., Raynaud, D., Schilt,
A., Schwander, J., Selmo, E., Souchez, R., Spahni, R., Stauffer, B., Stef-
fensen, J.P., Stenni, B., Stocker, T.F., Tison, J.L., Werner, M. & Wolff, E.W.
2007. Orbital and millennial antarctic climate variability over the Past
800,000 years. Science 317. 793–796.
44. EPICA community members 2006. One-to-one coupling of glacial
climate variability in Greenland and Antarctica. Nature 444. 195–198.
Um höfundana
Árný Erla Sveinbjörnsdóttir (f. 1953) lauk BS-prófi í
jarðfræði frá Háskóla Íslands 1978 og doktorsprófi í
jarðefnafræði frá University of East Anglia í Norwich,
Englandi 1983. Hún starfaði við jarðhitarannsóknir hjá
Orkustofnun (nú Isor) á árunum 1984–1985 og hefur
starfað hjá Raunvísindastofnun Háskólans frá 1986,
einkum við rannsóknir á samsætum súrefnis og vetnis
í vatni og við aldursgreiningar með 14C-aðferð.
Sigfús Jóhann Johnsen (f. 1940) lauk cand.scient.-prófi
í eðlisfræði frá Kaupmannahafnarháskóla 1966. Hann
starfaði í Kaupmannahöfn til 1989 og síðan jafnframt
við Háskóla Íslands. Árið 2010 var Sigfús gerður að
heiðursdoktor við Jarðvísindadeild Háskóla Íslands.
Hann hefur einkum stundað rannsóknir á fornveður-
fari út frá ískjörnum úr Grænlandsjökli og hefur hann-
að ísborana sem þar hafa dugað best.
Póst- og netföng höfunda/Authors’ addresses
Árný Erla Sveinbjörnsdóttir
Jarðvísindastofnun Háskólans
Öskju, Sturlugötu 7
IS-101 Reykjavík
arny@hi.is
Sigfús Jóhann Johnsen
Ice and Climate, Niels Bohr Institute
University of Copenhagen
Juliane Maries Vej 30
DK-2100 Copenhagen
Denmark
sigfus@gfy.ku.dk