Match!
Roy M. Koerner
Geological Survey of Canada
70Publications
30H-index
2,839Citations
Publications 70
Newest
#1Sarah BoonH-Index: 15
#2David O. BurgessH-Index: 18
Last.Martin SharpH-Index: 33
view all 4 authors...
The Devon Island ice cap has been the subject of scientific study for almost half a century, beginning with the first mass balance measurements in 1961. Research on the ice cap was the first to investigate (1) the role of meltwater in seasonal ice-velocity variations on a polythermal Arctic ice cap, (2) the use of air temperature rather than net radiation as a proxy for the energy driving surface melt, and (3) the influence of the changing frequency of specific synoptic weather configurations on...
#1Bo M Vinther (UCPH: University of Copenhagen)H-Index: 35
#2S. L. Buchardt (UCPH: University of Copenhagen)H-Index: 11
Last.Katrine K Andersen (UCPH: University of Copenhagen)H-Index: 25
view all 10 authors...
The response of the Greenland ice sheet (GIS) to changes in climate remains uncertain. During the Holocene climatic optimum — an unusually warm period from about 9,000 to 6,000 years ago — changes in Greenland appear inconsistent with the rest of the Northern Hemisphere. Here, the Greenland Holocene temperature history and the evolution of GIS surface elevation are extracted from four GIS locations; the results may resolve this disparity.
#1Alex S. GardnerH-Index: 20
#2Martin SharpH-Index: 43
Last.David LewisH-Index: 1
view all 8 authors...
Distributed glacier surface melt models are often forced using air temperature fields that are either downscaled from climate models or reanalysis, or extrapolated from station measurements. Typically, the downscaling and/or extrapolation are performed using a constanttemperaturelapserate, which is often taken to be the free-air moist adiabatic lapse rate (MALR: 68‐78 Ck m 21 ). To explore the validity of this approach, the authors examined altitudinal gradients in daily mean air temperature alo...
#1Bo M VintherH-Index: 35
#2S. L. BuchardtH-Index: 11
Last.Klaus Kaae AndersenH-Index: 1
view all 10 authors...
#1Bo M Vinther (UCPH: University of Copenhagen)H-Index: 35
#2S. L. Buchardt (UCPH: University of Copenhagen)H-Index: 11
Last.Klaus Kaae Andersen (UCPH: University of Copenhagen)H-Index: 1
view all 10 authors...
#1Christophe Kinnard (U of O: University of Ottawa)H-Index: 18
#2Roy M. Koerner (Geological Survey of Canada)H-Index: 30
Last.Bernard Lauriol (U of O: University of Ottawa)H-Index: 19
view all 8 authors...
[1] High-resolution (1 mm) stratigraphic information was derived from digital image analysis of an ice core from the Prince of Wales (POW) Icefield, Central Ellesmere Island, Canada. Following careful image processing, a profile of ice core transmitted light was derived from the greyscale images and used to reconstruct high-resolution density variations for the unfractured sections of the core. Images were further classified into infiltration and glacier ice using an automatic thresholding proce...
#1David A. Fisher (Geological Survey of Canada)H-Index: 39
#2Erich C. Osterberg (UMaine: University of Maine)H-Index: 13
Last.Cameron P. Wake (UNH: University of New Hampshire)H-Index: 33
view all 10 authors...
The ice core recovered from Prospector Russell Col on Mt Logan (5.4 km a.s.l.), in the Yukon spans over 20 000 years. This unique record offers a Pacific view of the stable isotope and chemical record from the Lateglacial to the present. The timescale is based on seasonal counted years, the largest known volcanic acid signatures and the major shift in stable isotopes and chemistry at the end of the Younger Dryas. There are large and sustained changes in the stable isotopic record that are anti-c...
#1B. M. Vinther (UEA: University of East Anglia)H-Index: 2
#2Henrik B. Clausen (Niels Bohr Institute)H-Index: 4
Last.Anders Svensson (Niels Bohr Institute)H-Index: 37
view all 10 authors...
[1] Four ice cores from the Agassiz ice cap in the Canadian high arctic and one ice core from the Renland ice cap in eastern Greenland have been synchronized to the Greenland Ice Core Chronology 2005 (GICC05) which is based on annual layer counts in the DYE-3, GRIP and NGRIP ice cores. Volcanic reference horizons, seen in electrical conductivity measurements (ECM) have been used to carry out the synchronization throughout the Holocene. The Agassiz ice cores have been matched to the NGRIP ice cor...
#1Christophe Kinnard (U of O: University of Ottawa)H-Index: 18
#2Christian Zdanowicz (Geological Survey of Canada)H-Index: 21
Last.David A. Fisher (Geological Survey of Canada)H-Index: 39
view all 4 authors...
[1] Changes in the extent of seasonal ice were investigated using historical and satellite observations for the period 1870–2003. The seasonal ice zone (SIZ) has been gradually expanding since 1870, with a marked acceleration over the past three decades, and has migrated north to encompass all peripheral Arctic seas. The expansion of the SIZ may be increasing the salinity of the upper Arctic Ocean, consistent with recent observations. The migration of the SIZ over continental shelves may also be...
#1David A. Fisher (Geological Survey of Canada)H-Index: 39
#2Erich C. Osterberg (UMaine: University of Maine)H-Index: 13
Last.Cameron P. Wake (UNH: University of New Hampshire)H-Index: 33
view all 10 authors...
A method of conveying textile material in recipients from a machine delivering textile material to a machine receiving textile material by means of a self-propelled conveying carriage (F) whose movements are controlled by a central control unit (Z). A disadvantage of the known systems is that despite the use of a self-propelled carriage for the between-machines transfer of the cans, fully automatic operation without manual intervention is impossible-i.e., some manual intervention is required at ...
12345678